Tax Policy

The Research Tax Credit's Design and Administration Can Be Improved Gao ID: GAO-10-136 November 6, 2009

The tax credit for qualified research expenses provides significant subsidies to encourage business investment in research intended to foster innovation and promote long-term economic growth. Generally the credit provides a subsidy for research spending in excess of a base amount but concerns have been raised about its design and administrability. Government Accountability Office (GAO) was asked to describe the credit's use, determine whether it could be redesigned to improve the incentive to do new research, and assess whether recordkeeping and other compliance costs could be reduced. GAO analyzed alternative credit designs using a panel of corporate tax returns and assessed administrability by interviewing Internal Revenue Service (IRS) and taxpayer representatives.

Large corporations have dominated the use of the research credit, with 549 corporations with receipts of $1 billion or more claiming over half of the $6 billion of net credit in 2005 (the latest year available). In 2005, the credit reduced the after-tax price of additional qualified research by an estimated 6.4 to 7.3 percent. This percentage measures the incentive intended to stimulate additional research. The incentive to do new research (the marginal incentive) provided by the credit could be improved. Based on analysis of historical data and simulations using the corporate panel, GAO identified significant disparities in the incentives provided to different taxpayers with some taxpayers receiving no credit and others eligible for credits up to 13 percent of their incremental spending. Further, a substantial portion of credit dollars is a windfall for taxpayers, earned for spending they would have done anyway, instead of being used to support potentially beneficial new research. An important cause of this problem is that the base for the regular version of the credit is determined by research spending dating back to the 1980s. Taxpayers now have an "alternative simplified credit" option, but it provides larger windfalls to some taxpayers and lower incentives for new research. Problems with the credit's design could be reduced by eliminating the regular credit and modifying the base of the alternative simplified credit to reduce windfalls. Credit claims have been contentious, with disputes between IRS and taxpayers over what qualifies as research expenses and how to document expenses. Insufficient guidance has led to disputes over the definitions of internal use software, depreciable property, indirect supervision, and the start of commercial production. Also disputed is the documentation needed to support a claim, especially in cases affected by changes in the law years after expenses were recorded. Such disputes leave taxpayers uncertain about the amount of credit to be received, reducing the incentive.

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GAO-10-136, Tax Policy: The Research Tax Credit's Design and Administration Can Be Improved This is the accessible text file for GAO report number GAO-10-136 entitled 'Tax Policy: The Research Tax Credit's Design and Administration Can Be Improved' which was released on December 8, 2009. This text file was formatted by the U.S. Government Accountability Office (GAO) to be accessible to users with visual impairments, as part of a longer term project to improve GAO products' accessibility. Every attempt has been made to maintain the structural and data integrity of the original printed product. Accessibility features, such as text descriptions of tables, consecutively numbered footnotes placed at the end of the file, and the text of agency comment letters, are provided but may not exactly duplicate the presentation or format of the printed version. The portable document format (PDF) file is an exact electronic replica of the printed version. We welcome your feedback. Please E-mail your comments regarding the contents or accessibility features of this document to Webmaster@gao.gov. This is a work of the U.S. government and is not subject to copyright protection in the United States. It may be reproduced and distributed in its entirety without further permission from GAO. Because this work may contain copyrighted images or other material, permission from the copyright holder may be necessary if you wish to reproduce this material separately. Report to the Committee on Finance, U.S. Senate: United States Government Accountability Office: GAO: November 2009: Tax Policy: The Research Tax Credit's Design and Administration Can Be Improved: GAO-10-136: GAO Highlights: Highlights of GAO-10-136, a report to Committee on Finance, U.S. Senate. Why GAO Did This Study: The tax credit for qualified research expenses provides significant subsidies to encourage business investment in research intended to foster innovation and promote long-term economic growth. Generally the credit provides a subsidy for research spending in excess of a base amount but concerns have been raised about its design and administrability. GAO was asked to describe the credit‘s use, determine whether it could be redesigned to improve the incentive to do new research, and assess whether recordkeeping and other compliance costs could be reduced. GAO analyzed alternative credit designs using a panel of corporate tax returns and assessed administrability by interviewing IRS and taxpayer representatives. What GAO Found: Large corporations have dominated the use of the research credit, with 549 corporations with receipts of $1 billion or more claiming over half of the $6 billion of net credit in 2005 (the latest year available). In 2005, the credit reduced the after-tax price of additional qualified research by an estimated 6.4 to 7.3 percent. This percentage measures the incentive intended to stimulate additional research. The incentive to do new research (the marginal incentive) provided by the credit could be improved. Based on analysis of historical data and simulations using the corporate panel, GAO identified significant disparities in the incentives provided to different taxpayers with some taxpayers receiving no credit and others eligible for credits up to 13 percent of their incremental spending. Further, a substantial portion of credit dollars is a windfall for taxpayers, earned for spending they would have done anyway, instead of being used to support potentially beneficial new research. An important cause of this problem is that the base for the regular version of the credit is determined by research spending dating back to the 1980s. Taxpayers now have an ’alternative simplified credit“ option, but it provides larger windfalls to some taxpayers and lower incentives for new research. Problems with the credit‘s design could be reduced by eliminating the regular credit and modifying the base of the alternative simplified credit to reduce windfalls. Credit claims have been contentious, with disputes between IRS and taxpayers over what qualifies as research expenses and how to document expenses. Insufficient guidance has led to disputes over the definitions of internal use software, depreciable property, indirect supervision, and the start of commercial production. Also disputed is the documentation needed to support a claim, especially in cases affected by changes in the law years after expenses were recorded. Such disputes leave taxpayers uncertain about the amount of credit to be received, reducing the incentive. Figure: An Illustration of How Base Design Affects Windfall Credits: [Refer to PDF for image: illustration] A 20% flat credit (with no base): Marginal incentive (20% of $100): $20; Marginal incentive (20% of $1000): $200; Revenue cost: $220. An incremental 20% credit with a $1,000 base: Marginal incentive (20% of $100): $20; Windfall credit: 0; Revenue cost: $20. Qualified research spending: $100: Taxpayer‘s marginal spending; $1,000: Spending on research that taxpayer would have done anyway. Source: GAO. [End of figure] What GAO Recommends: Congress should consider eliminating the regular credit option and adding a minimum base to the alternative simplified credit. GAO recommends that the Secretary of the Treasury clarify the definition of qualified research expenses and organize a working group to develop standards for documentation. Treasury agreed with our recommendation and plans to provide additional guidance in the next few months. View [hyperlink, http://www.gao.gov/products/GAO-10-136] or key components. For more information, contact James White at (202) 512-9110 or whitej@gao.gov. [End of section] Contents: Letter: Background: Large Corporations Have Dominated the Use of the Research Credit, Which Provided an Average Marginal Incentive of About 7 Percent in 2003 through 2005: Important Trade-Offs Exist in the Choice of Research Credit Designs: Issues of Contention between Taxpayers and IRS Relating to the Research Credit Are Both Extensive and Acute: Conclusions: Matters for Congressional Consideration: Recommendations for Executive Action: Agency Comments: Appendix I: Scope and Methodology: Appendix II: Data Relating to the Use of the Research Tax Credit by Corporations: Appendix III: Examples of How the Base of the Credit Affects Marginal Incentives and Windfall Credits: Appendix IV: Issues Relating to the Definition of Qualified Research Expenses: Appendix V: Issues Relating to the Definition of Gross Receipts for a Controlled Group of Corporations: Appendix VI: Issues Relating to Recordkeeping and Substantiation: Appendix VII: Issues Relating to the Computation Rules for the Group Credit: Appendix VIII: Comments from the U.S. Department of Treasury: Appendix IX: GAO Contact and Staff Acknowledgements: Tables: Table 1: Maximum MERs and Average Effective Rates of Credit for Different Categories of Credit Claimants, 2005: Table 2: Summary Comparison of Leading Design Options: Table 3: Total Claimants, Qualified Research Expenses, and Net Credits, 2003 to 2005: Table 4: Marginal Effective Rates, Discounted Revenue Costs, and Bangs- per-Buck of the Research Credit, 2003 to 2005: Table 5: Comparison of Initial and Amended Claims of the Research Credit by Panel Corporations: Table 6: Comparison of Initial and Amended Claims of the Research Credit by Those Corporations That Made a Change: Table 7: Changes in the Basic Elements of the Research Credit Computation between Initial and Amended Claims: Table 8: Changes in the Basic Elements of the Research Credit Computation between Initial and Amended Claims for Those Corporations That Made a Change: Table 9: Comparison of Final Taxpayer Pre-Exam Credit Claim to Latest Available IRS Position: Table 10: Comparison of Final Taxpayer Pre-Exam Credit Claim to Latest Available IRS Position for Those Cases in Which IRS Made a Change: Table 11: Changes in the Basic Elements of the Research Credit Computation between Final Taxpayer Pre-Exam Credit Claim to Latest Available IRS Position: Table 12: Changes in the Basic Elements of the Research Credit Computation between Final Taxpayer Pre-Exam Credit Claim to Latest Available IRS Position for Those Cases in Which IRS Made a Change: Table 13: Distribution of QREs and Revenues Cost by Type of Credit User Prior to and After the Introduction of the ASC (Panel Corporations Only): Table 14: Weighted Average Marginal Incentives and Revenue Costs for the Panel Population Before and after the Introduction of the ASC: Table 15: Percentage Changes in Marginal Incentives and Revenue Costs Relative to 2009 Rules If the ASC Is the Only Credit Allowed: Table 16: Percentage Changes in Marginal Incentives and Revenue Costs Relative to 2009 Rules If a Choice Is Allowed between the ASC and the Regular Credit with an Updated Base: Table 17: Percentage Revenue Savings from Adding a Minimum Base Constraint to the ASC If the ASC Is the Only Credit Allowed: Table 18: Percentage Reductions in Marginal Incentives and Revenue Costs If Only the ASC Is Allowed, Rather than Both the ASC and the Regular Credit, When Both Credits Have a 50% Minimum Base: Table 19: Percentage Reductions in Marginal Incentives and Revenue Costs If Only the ASC Is Allowed, Rather than Both the ASC and the Regular Credit, When Both Credits Have a 75% Minimum Base: Table 20: A Comparison of Two Methods for Allocating Group Credits in Selected Situations: Figures: Figure 1: A Comparison of an Incremental Credit to Flat and Capped Credits: Figure 2: Information Needed to Estimate the Bang-per-Buck of the Credit: Figure 3: Illustration of How Current Spending Increases Reduce Future Credits Under the ASC: Figure 4: Distribution of Claimants, Qualified Research Expenses, and Net Credits, by Size of Taxpayer, 2003 to 2005: Figure 5: Shares of Claimants, QREs and Research Credits, by Taxpayer's Credit Status, 2005: Figure 6: Percentage of Credit Claimants Subject to Tax Liability Constraints, 2003 to 2005: Figure 7: Illustration of How Inaccuracies in the Base of the Credit Result in Disparities in Incentives Across Taxpayers: AER: Average Effective Rate: AIRC: Alternative Incremental Research Credit: ASC: Alternative Simplified Credit: ATG: Audit Technique Guides: EIN: Employer Identification Number: FBP: Fixed Base Percentage: IDR: Information Document Request: IRC: Internal Revenue Code: IRS: Internal Revenue Service: IUS: Internal-Use Software: LMSB: Large and Mid-Size Business: MER: Marginal Effective Rate: PFA: Prefiling Agreement: QRE: Qualified Research Expense: RCRA: Research Credit Recordkeeping Agreements: SME: Subject Matter Experts: SOI: Statistics of Income: [End of section] United States Government Accountability Office: Washington, DC 20548: November 6, 2009: The Honorable Max Baucus: Chairman: The Honorable Charles E. Grassley: Ranking Minority Member: Committee on Finance: United States Senate: Since 1981, the tax credit for qualified research expenses has provided significant subsidies (an estimated $5.6 billion for fiscal year 2009) to encourage business investment in research and development. This type of investment can have a profound effect on long-term growth if it fosters innovation. Economists widely agree that some government subsidy for research is justified because the social returns from research exceed the private returns that investors receive. In the absence of a subsidy, the amount invested in research would be less than optimal from society's standpoint. Despite the widespread support for the concept of a credit for increasing research activities, concerns have been raised about the cost-effectiveness of the design of the current credit and its administrative and compliance costs. Very generally, the research credit provides a subsidy for spending in excess of a base amount. One design issue is how the base is determined and how well it achieves its objective of targeting benefits only to research spending that would not have been done without the credit. To help inform congressional deliberations on the credit, you asked us to (1) describe how taxpayers are currently using the credit; (2) identify what, if any, changes to the credit's design may be able to increase the incentive to do additional research with social benefits; and (3) identify specific and significant problems, if any, that exist in the administration of the credit and options to address them. To provide information on the use of the research credit we analyzed Internal Revenue Service (IRS) taxpayer data from the Statistics of Income (SOI) Division's annual samples of corporate tax returns for the most recent years available (2003 through 2006) supplemented by data collected by IRS examiners. We determined that the data were sufficiently reliable for our purpose of describing the general characteristics of R&E Credit claimants; the amount and type of R&E Credit claimed by taxpayers; the average rate of credit for claimants; and the types of research spending for which taxpayers are claiming the credit (i.e., basic vs. applied research, as defined by tax rules). However, we do discuss certain limitations of the data and how those may affect selected statistics. To identify what, if any, problems exist with the design of the credit, we examined its performance, relative to alternative designs, in terms of three criteria. Our first criterion was the amount of revenue the government must forgo under each of the alternative credit designs in order to provide a given level of incentive.[Footnote 1] Our second criterion was the extent to which each design minimizes unintended variations in the rates of incentives across taxpayers. Our final criterion was the extent to which each design of the credit helps to minimize the administrative and compliance burdens on IRS and taxpayers. We compared alternative designs of the credit by using a panel of SOI taxpayer data to simulate the sizes of the incentives and revenue costs of different credit designs under different scenarios, as well as by interviewing research credit experts. We performed a sensitivity analysis that allowed certain data and parameters of our simulation model to vary. For example, one aspect of our sensitivity analysis involved running the simulations using data collected at different stages of the tax filing process, including data from the original returns as well as from amended or audited returns, where applicable.[Footnote 2] Our panel database included most of the largest credit claimants in 2003 and 2004, which accounted for about half of the total credits claimed and 54 percent to 55 percent of total qualified research expenses in each of those years. These corporations are not representative of all research credit claimants; however, the data available to us do not suggest that the remainder of the credit claimant population is so different from our panel population in key respects that we would have reached different conclusions and recommendations had we been able to run our simulations for the full population.[Footnote 3] To identify what, if any, specific problems exist with the IRS's administration of the credit or with taxpayers' ability to comply with credit rules, we interviewed IRS and Department of the Treasury officials, tax practitioners, and industry representatives about their principal concerns and how these concerns might best be addressed. In addition, we reviewed public comments made to Treasury about research credit regulations, as well as Treasury's responses to the comments. Finally, we analyzed data collected by IRS examiners relating to amended credit claims and audit adjustments to credit claims to identify which key line items in the credit computation are most subject to change after an initial claim has been filed. We conducted this performance audit from January 2007 through August 2009 in accordance with generally accepted government auditing standards. Those standards require that we plan and perform the audit to obtain sufficient, appropriate evidence to provide a reasonable basis for our findings and conclusions based on our audit objectives. We believe that the evidence obtained provides a reasonable basis for our findings and conclusions based on our audit objectives. Background: History and Overview of Credits for Different Types of Research: Congress created the research tax credit in 1981 to encourage businesses to do more research.[Footnote 4] The credit has never been a permanent part of the Internal Revenue Code (IRC). Since its enactment on a temporary basis in 1981, the credit had been extended 13 times, often retroactively. There was only a 1-year period (between June 30, 1995, and July 1, 1996) during which the credit was allowed to lapse with no retroactive provision upon reinstatement. Most recently, the credit was extended through December 31, 2009. The basic design of the credit has been modified or supplemented several times since its inception. For tax years ending after December 31, 2006, through December 31, 2008, IRC Section 41 allowed for five different credits. Three of the credits, the regular research credit, the alternative incremental research credit (AIRC), and the alternative simplified credit (ASC), rewarded the same types of qualified research and are simply alternative computational options available to taxpayers. Each taxpayer could claim no more than one of these credits. (For purposes of this report we use the term research credit when referring collectively to these options.) The AIRC option was repealed beginning January 1, 2009, while the ASC and regular research credit are available through the end of 2009. The other two separate credits, the university basic research credit and the energy research credit are targeted to more specific types of research and taxpayers that qualified could claim them in addition to the research credit. This report does not address those separate credits. How the Research Credit Is Targeted: Both the definition of research expenses that qualify for the credit and the incremental nature of the credit's design are important in targeting the subsidy to increase the social benefit per dollar of revenue cost. In order to earn the research credit a taxpayer has to have qualified research expenses (QREs) in a given year and those expenses have to exceed a threshold or base amount of spending. Qualified Research Expenses: The IRC defines credit eligibility in terms of both qualifying research activities and types of expenses. It specifies the following four criteria that a research activity must meet in order to qualify for purposes of the credit: * The activity has to qualify as research under IRC section 174 (which provides a separate expensing allowance for research), which requires that an activity be research in the "experimental or laboratory sense and aimed at the development of a new product." * The research has to be undertaken for the purpose of discovering information that is technological in nature. * The objective of discovering the information has to be for use in the development of a new or improved business component of the taxpayer. * Substantially all of the research activities have to constitute elements of a process of experimentation for a qualified purpose. The IRC also specifies that only the following types of expenses for in- house research or contract research would qualify: * wages paid or incurred to employees for qualified services; * amounts paid or incurred for supplies used in the conduct of qualified research; * amounts paid or incurred to another person for the right to use computers in the conduct of qualified research; and: * in the case of contract research, 65 percent of amounts paid or incurred by the taxpayer to any person, other than an employee, for qualified research. Spending for structures, equipment, and overhead do not qualify. In addition, the IRC identifies certain types of activities for which the credit cannot be claimed, including research that is: * conducted outside of the United States, Puerto Rico, or any other U.S. possession; * conducted after the beginning of commercial production of a business component; * related to the adaptation of an existing business component to a particular customer's requirements; * related to the duplication of an existing business component; * related to certain efficiency surveys, management functions, or market research; * in the social sciences, arts, or humanities; or: * funded by another entity. As will be discussed in a section below, the practical application of the various criteria and restrictions specified in the IRC has been the source of considerable controversy between IRS and taxpayers. The Rationale behind an Incremental Design for the Credit: The research credit has always been an incremental subsidy, meaning that taxpayers earn the credit only for qualified spending that exceeds a defined base amount of spending. The purpose of this design is to reduce the cost of providing a given amount of incentive. Figure 1 illustrates the difference between an incremental credit and two common alternative designs for a subsidy--a flat credit and a capped flat credit. In the case of the flat credit a taxpayer would earn a fixed rate of credit, 20 percent in this example, for every dollar of qualified spending. The taxpayer's total qualified spending consists of the amount that it would have spent even if there were no subsidy, plus the additional or "marginal" amount that it spends only because the credit subsidy is available. The subsidy encourages additional spending by reducing the after-tax cost of a qualified research project and, thereby, increasing the project's expected profitability sufficiently to change the taxpayer's investment decision from no to yes. The subsidy provided for the marginal spending is the only portion of the credit that affects the taxpayer's research spending behavior. The remainder of the credit is a windfall to the taxpayer for doing something that it was going to do anyway. In the case of a capped credit, the taxpayer earns a fixed rate of credit on each dollar of qualified spending up to a specified limit. If, as in the example shown in figure 1, the credit's limit is less than the amount that the taxpayer would have spent anyway, all of the credit paid is a windfall and no additional spending is stimulated because no incentive is provided at the margin. In contrast, the objective of an incremental credit is to focus as much of the credit on marginal spending while keeping the amount provided as a windfall to a minimum. The last example in figure 1 shows the case of an ideal incremental credit--one for which the base of the credit (the amount of spending that a taxpayer must exceed before it can begin earning any credit) perfectly measures the amount of spending that the taxpayer would have done anyway. This credit maintains an incentive for marginal spending but eliminates windfall credits, substantially reducing the credit's revenue cost. Alternatively, the savings from the elimination of windfalls could be used to increase the rate of credit on marginal spending. Figure 1: A Comparison of an Incremental Credit to Flat and Capped Credits: [Refer to PDF for image: illustration] A 20% flat credit (with no base): Marginal incentive (20% of $100): $20; Marginal incentive (20% of $1000): $200; Revenue cost: $220. A 20% flat credit capped at $80: Marginal incentive: (No marginal incentive so taxpayer decides not to do the marginal spending); Windfall credit (20% flat credit with $80 cap applied): $80; Revenue cost: $80. An incremental credit with an ideal base: Marginal incentive (20% of $100): $20; Windfall credit: 0; Revenue cost: $20. Qualified research spending: $100: Taxpayer‘s marginal spending; $1,000: Spending on research that taxpayer would have done anyway. Source: GAO. [End of figure] Computation of the Research Credit: The primary differences across the research credit computation options are in (1) how the base spending is defined and (2) the rate of credit that is then applied to the difference between current-year QREs and the base amounts. The box below shows the detailed computation rules for each option. Alternative Computation Options for the Research Tax Credit (Before Restrictions) Regular Credit Option: Credit = 20% × [current-year QREs - base QREs], where base QREs equal the greater of: [the sum of QREs for 1984 to 1988/the sum of gross receipts for 1984 to 1988] × average gross receipts for the 4 tax years immediately preceding the current one, or: 50% × current-year QREs. [This is known as the minimum base amount.] The ratio of QREs to gross receipts during the historical base period is known as the fixed base percentage (FBP). A maximum value for the FBP is set at 16 percent. Also, special "start-up" rules exist for taxpayers whose first tax year with both gross receipts and QREs occurred after 1983, or that had fewer than 3 tax years from 1984 to 1988 with both gross receipts and QREs. The FBP for a start-up firm is set at 3% for a firm's first 5 tax years after 1993 in which it has both gross receipts and QREs. This percentage is gradually adjusted so that by the 11th tax year it reflects the firm's actual experience during its 5th through 10th tax years. ASC Option: Credit = 14% × [current-year QREs - 50% × average QREs in the 3 preceding tax years] If a taxpayer has no QREs in any of its 3 preceding tax years, then the credit is equal to 6% of its QREs in the current tax year. AIRC Option: (discontinued as of January 1, 2009): Credit = 3% of QREs that are above 1% but not greater than 1.5% of average annual gross receipts in the 4 preceding tax years: + 4% of QREs that are above 1.5% but not greater than 2% of average annual gross receipts in the 4 preceding tax years: + 5% of QREs that are above 2% of average annual gross receipts in the 4 preceding tax years: Restrictions on the Credit's Use: The IRC requires that taxpayers reduce the amount of their deductions for research expenses under section 174 by the amount of research credit that they claim. Alternatively, the taxpayer can elect to claim a reduced credit, equal to 65 percent of the credit that it otherwise would have been able to claim. The research credit is a component of the general business credit and, therefore, is subject to the limitations that apply to the latter credit. Specifically, the general business credit is generally nonrefundable, except for the provisions of section 168(k)(4), so if the taxpayer does not have a sufficient precredit tax liability against which to use the credit in the current tax year, the taxpayer must either carry back some or all of the credit to the preceding tax year (if had a tax liability that year), or carry the credit forward for use in a future tax year. Unused general business credits may be carried forward up to 20 years. Group Aggregation Rules: When Congress originally enacted the research credit in 1981, it included rules "intended to prevent artificial increases in research expenditures by shifting expenditures among commonly controlled or otherwise related persons."[Footnote 5] Without such rules, a corporate group might shift current research expenditures away from members that would not be able to earn the credit due to their high base expenditures to members with lower base expenditures. A group could, thereby, increase the amount of credit it earned without actually increasing its research spending in the aggregate. Under the IRC, for purposes of determining the amount of the research credit, the qualified expenses of the same controlled groups of corporations are aggregated together. The language of the relevant subsection specifically states that: 1. All members of the same controlled group of corporations shall be treated as a single taxpayer,[Footnote 6] and: 2. The credit (if any) allowable under this section to each such member shall be its proportionate share of the qualified research expenses and basic research payments giving rise to the credit. Congress directed that Treasury regulations drafted to implement these aggregation rules be consistent with these stated principles. As discussed in a later section, some tax practitioners say that Treasury's regulations on this issue are unnecessarily burdensome. The Marginal Incentive Provided by the Research Tax Credit: One of the key measures that we will use to compare credit designs is the marginal effective rate (MER) of the credit, which quantifies the incentive that a credit provides to marginal spending and which can be simply stated as: MER = change in the credit benefit/marginal qualified research expenses (QREs): The MER is the same as the marginal rate of incentive that we presented in figure 1. It measures the reduction in the after-tax price of marginal research due to the credit. In the example of a flat credit with a 20-percent statutory rate shown in that figure, the taxpayer received $20 when it increased its spending by $100, giving it an MER of 20 percent (the credit reduces the price of marginal research by 20 percent).[Footnote 7] However, factors other than just the statutory rate of a tax credit can also be important in determining its marginal incentive. Measures that take those other factors into account are commonly known as "effective rates." In a later section we explain how various features of the credit's design can affect the MER; however, one factor that reduces the MER for all credit earners, regardless of the design, is the offset of the credit against the section 174 deduction for research spending (or the alternative election of the reduced credit amount) mentioned earlier. For corporations subject to the top corporate income tax rate of 35 percent, this offset effectively reduces the regular credit's MER from 20 percent to 13 percent and the ASC's MER from 14 percent to 9.1 percent.[Footnote 8] Another factor that reduces the MER of many taxpayers is the fact that they do not have sufficient tax liabilities to use all of the credits they earn in the current year. When a taxpayer cannot use the credit until sometime in the future, the present value of the credit decreases according to the taxpayer's discount rate. For example, if the taxpayer has a discount rate of 5 percent and must delay the use of $1 million of credit for three years, the present value of that credit is reduced to approximately $864,000.[Footnote 9] Such a delay, therefore, would reduce the regular credit's MER from 13 percent to about 11.2 percent. This delay in the use of the credit also reduces the present value of the revenue cost to the government. In the remainder of this report we make a distinction between the amount of net credit (after the section 174 offset) that taxpayers earn for a given tax year and the credit's discounted revenue cost, which reflects delays in the use of credits. Unless otherwise specified, we use the term revenue cost to refer to the discounted revenue cost. Estimating the Credit's Stimulative Effect: Three pieces of information are needed to estimate the amount of spending stimulated by the research credit. Then, to determine how much spending is stimulated per dollar of revenue cost (colloquially known as the "bang-per-buck" of the credit), the tax revenue cost of the credit is also needed. The steps in this estimation process are illustrated in figure 2. The shaded boxes identify the information required. The first step is to multiply the weighted average MER provided by the credit times a measure of the responsiveness of total research spending to the price reduction.[Footnote 10] This responsiveness measure is called the price elasticity of research spending and is defined as the percentage change in total QREs divided by the percentage change in the price of a unit of research. If the average MER were 5 percent and the price elasticity were -1, then the credit would increase total QREs by 5 percent. The next step in the computation is to apply the percentage increase to the amount of aggregate qualified spending that would have been done without the credit in order to determine the total amount of spending stimulated by the credit. Finally, the bang-per-buck can be estimated by dividing the total amount stimulated by the credit's revenue cost. Figure 2: Information Needed to Estimate the Bang-per-Buck of the Credit: [Refer to PDF for image: illustration] Percentage increase in qualified research spending due to the credit: Equals: Percentage reduction in the after-tax price of a unit of qualified research: Marginal effective rate (MER) of the credit. Times: Percentage by which spending increases for each 1% reduction in the price: Price elasticity of research spending. Dollar increase in qualified research spending due to the credit: Equals: Percentage increase in qualified research spending due to the credit: Times: Aggregate qualified research spending. Dollar increase in qualified research spending due to the credit: Divided by: Revenue Cost; Equals: Bang-per-buck of the credit (Amount of spending stimulated for each dollar of revenue forgone). Source: GAO. [End of figure] In this study, we provide some estimates of the credit's weighted average MER and revenue cost, as well as estimates of the aggregate amount of qualified research spending. We have not estimated the price elasticity of research spending and the available estimates from past empirical research leave considerable uncertainty regarding the size of that elasticity.[Footnote 11] Nevertheless, as can be seen in figure 2, for any value of the price elasticity, a credit design that provides the same weighted average MER as another design, but at a lower revenue cost, should provide a higher bang-per-buck than that other credit. Therefore, comparing different designs on the basis of their MER and revenue cost should be equivalent to comparing them on the basis of their bang-per-buck. To fully assess the research credit's value to society, more than just the amount of spending stimulated per dollar of revenue cost would have to be examined. A comparison would have to be made between (1) the total benefits gained by society from the research stimulated by the credit and (2) the estimated costs to society resulting from the collection of taxes required to fund the credit. The social benefits of the research conducted by individual businesses include any new products, productivity increases, or cost reductions that benefit other businesses and consumers throughout the economy. Although most economists agree that research spending can generate social benefits, the effects of the research on other businesses and consumers are difficult to measure. We are not aware of any studies that have empirically estimated the credit's net benefit to society. Large Corporations Have Dominated the Use of the Research Credit, Which Provided an Average Marginal Incentive of About 7 Percent in 2003 through 2005: Although more than 15,000 corporate taxpayers claimed research credits each year from 2003 through 2005, a significantly smaller population of large corporations (those with business receipts of $1 billion or more) claimed most of the credit during this period. In 2005, 549 such corporations accounted for about 65 percent of the $6 billion of net credit claimed that year (see figure 4 and table 3 in appendix II). [Footnote 12] Even within the population of large corporations credit use is concentrated among the largest users. The 101 corporations in our panel database in 2004 accounted for about 50 percent of the net credit claimed that year. Corporations with business receipts of $1 billion or more accounted for an even larger share--about 70 percent-- of the $131 billion of total QREs reported by credit claimants for 2005.[Footnote 13] In 2005 approximately 69 percent of QREs were for wages paid to employees engaged in qualified research activities. Almost all of the remaining QREs were for supplies used in research processes (about 16 percent) and for contract research (about 15 percent).[Footnote 14] Prior to the introduction of the ASC in 2006, taxpayers that used the regular credit accounted for the majority of QREs and an even larger majority of the research credit claimed.[Footnote 15] In 2005, regular credit users reported about 75 percent of all QREs and claimed about 90 percent of total research credits.[Footnote 16] (See figure 5 in appendix II.) Their share of total credits was larger than their share of total QREs because the regular credit rules were more generous than those of the AIRC for taxpayers who could qualify for the former. Most of the regular credit users were subject to the 50-percent minimum base, which, as we will explain in a later section, had a significant effect on the MER they received from the credit. The lack of current tax liabilities was another factor that affected the MERs of many credit claimants. In 2005, 44 percent of total net credits earned could not be used immediately. (See figure 6 in appendix II.) By taking into account factors, such as which credit a taxpayer selected, whether it was subject to a minimum base, and whether it could use its credit immediately, we were able to estimate MERs for all of the credit claimants represented in SOI's corporate database (see appendix I for details). These individual estimates allowed us to compute a weighted average MER for all taxpayers. We also estimated the discounted cost to the government of the credits that all taxpayers earned. These estimates, along with data on total QREs, permitted us to estimate the bang-per-buck of the credit for 2003 through 2005 for alternative assumptions about the price elasticity of research spending. (See table 4 in appendix II.) Our estimate of the overall MER in 2005 ranged between 6.4 percent and 7.3 percent, depending on assumptions about discount rates and the length of time before taxpayers could use their credits. Our estimates of the discounted revenue cost were also sensitive to these assumptions and ranged between $4.8 billion and $5.8 billion. The bang-per-buck estimates were not sensitive to these particular assumptions;[Footnote 17] however, they were quite sensitive to the price elasticity assumptions. If the elasticity was -0.5, the bang-per-buck for 2005 would have been about $0.80. If the elasticity was -2, the bang-per-buck would have been about $3.00. Data on amended claims filed by our panel of large corporations indicate that, in the aggregate, these amendments increased the amount of credit claimed by between 1.5 percent and 5.4 percent (relative to the amounts claimed on initial returns) for each tax year from 2000 through 2003. (See tables 5 through 8 in appendix II.) The credit increase through amendments for tax year 2004 was only 0.5 percent. Data from IRS examinations of these large corporations indicate that examiners recommended changes that, in the aggregate, would have decreased credits claimed by between 16.5 and 27.1 percent each tax year from 2000 through 2003.[Footnote 18] (See tables 9 through 12 in appendix II.) The lower percentage change of 9 percent for 2004 reflects, in part, the fact that audits for that tax year had not progressed as far as those for the earlier years. Changes of these magnitudes raise the question of how much credit taxpayers actually expected to receive when they filed their claims and, more important, when they were making their research spending decisions for the years in question.[Footnote 19] These expectations are critical because they are what affect the taxpayer's decisions, not the amounts of credit actually received well after the decisions have been made. For those taxpayers that do not expect to file amendments and do not expect IRS to change their credits, the amounts claimed on their original returns should be the best estimate of their expectations. For taxpayers that know they may be stretching the rules with some of the expenses they are trying to claim as QREs, their post- exam credit amounts may be better estimates of their expectations. In other cases, given the lack of clarity in certain aspects of the definitions of both QREs and gross receipts, taxpayers may be uncertain whether they will receive any credit for particular research projects. Such uncertainty reduces the credit's effective incentive. Important Trade-Offs Exist in the Choice of Research Credit Designs: The regular credit provides a higher average MER for a given revenue cost than does the current ASC; however, over time, the historically fixed base of the regular credit becomes a very poor measure of the research spending that taxpayers would have done anyway. As a result, the benefits and incentives provided by the credit become allocated arbitrarily and inequitably across taxpayers, likely causing inefficiencies in resource allocation. As we noted earlier, an ideal incremental credit would reward marginal research spending but not any spending that a taxpayer would have done anyway. In reality, it is impossible for policymakers to know how much research spending taxpayers would have done without the credit. Any practical base that can be designed for the credit will only approximate the ideal base with some degree of inaccuracy. The primary base for the regular credit (except for start-up companies) is determined by a taxpayer's spending behavior that occurred up to 25 years ago (see the computation rules on page 7).[Footnote 20] There is little reason to believe that, in most cases, the ratio of research spending to gross receipts from that long ago, when multiplied by the taxpayer's most recent 4-year average of gross receipts, would accurately approximate the ideal base for that taxpayer. Most credit claimants received substantial windfalls. Regular credit claimants subject to the 50 percent minimum base represented about 71 percent of all claimants in 2005 (see figure 5 in appendix II). More than half of the credit such claimants earned was a windfall. Even the highest elasticity estimates and the largest possible MER (which together should produce the largest increase in research spending) indicate that spending increases due to the credit represent less than 15 percent of the total research spending of these claimants. Since regular credit users subject to the 50 percent minimum base receive a credit for half of their research spending, the credit for marginal spending is less than half of the credit they receive. Inaccuracies in the base also cause disparities across taxpayers in both the marginal incentives and windfall benefits that they receive from the credit. Table 1 shows the extent of the disparities across taxpayers that use different credit options and are subject to different constraints. Taxpayers for which bases exceeded their actual spending received no incentive from the credit. Regular credit users whose primary bases were not so inaccurately low that the minimum base took effect received had MERs of 13 percent (if they could use their credits immediately), while those with primary bases so inaccurate that they were subject to the minimum base had their MERs cut to 6.5 percent (again, if they could use their credits immediately).[Footnote 21] Using the IRS tax data, we estimated that the regular credit users subject to the minimum base received an average effective rate of credit (total credit divided by total spending) more than one and one- half times as large as those who were not subject to the minimum base. The average effective rate includes windfall credits, which the MER does not. This result indicates that, even though the minimum base reduced the credits that taxpayers earned on both their marginal spending and on the spending they would have done anyway, taxpayers subject to the minimum base still received larger windfall credits than those who were not. Meanwhile, AIRC users received significantly lower MERs and average effective credit rates than did either group of regular credit users. Table 1: Maximum MERs and Average Effective Rates of Credit for Different Categories of Credit Claimants, 2005: Maximum MER; Had QREs below base amounts: 0%; Claimed regular credit: Not subject to minimum base: 13.0%; Claimed regular credit: Subject to minimum base: 6.5%; Claimed AIRC: 2.4%. Average Effective Rate; Had QREs below base amounts: 0%; Claimed regular credit: Not subject to minimum base: 4.1%; Claimed regular credit: Subject to minimum base: 6.5%; Claimed AIRC: 1.9%. Source: GAO analysis based on IRS data and the IRC. [End of table] Although data are not yet available on credit use after the ASC was introduced, we applied current credit rules to the historical data from our panel of large credit claimants to estimate how many of them would have chosen ASC if it had been available in 2003 and 2004. We found that, if taxpayers had selected the option that provided them with the largest credit amount, most of the panel members would have switched to the ASC, but a significant number would still have claimed the regular credit. ASC users would have accounted for about 62 percent of the panel population's total QREs and between 56 percent to 60 percent of the revenue cost of all panel members in those years. (See table 13.) Some taxpayers still had MERs over 10 percent while others had negative MERs. The disparate distribution of incentives and windfalls is not only inequitable, it can also result in a misallocation of research spending and economic activity in general across competing sectors.[Footnote 22] These misallocations may reduce economic efficiency and, thereby, diminish any economic benefits of the credit. An additional significant problem with the regular credit's base is the difficulty that taxpayers have in substantiating their base computations to the IRS. Many businesses lack the types of records dating to the mid 1980s that are needed to complete these computations with a high degree of accuracy and the substantiation of base QREs has become a leading issue of contention between regular credit users and the IRS. (This problem will be discussed in more detail in a later section.) Under the ASC's Moving-Average Base, Marginal Incentives Are Reduced Because Current Spending Reduces the Amount of Credit Earned in Future Years: The base of the ASC continually updates itself; however, an important disadvantage of this updating is that a taxpayer's current year research spending will increase its base in future years, thereby reducing the amount of credit it earns in those years. Figure 3 illustrates this problem in the case that a taxpayer earns a credit each year but is not subject to the minimum base. For every $1 million of spending increase this year, the taxpayer's base in each of the next 3 years would increase by $166,667. These base increases reduce the amount of credit that the taxpayer can earn in each of the next 3 years by $15,167, for a combined total of $45,500.[Footnote 23] As a result, the actual benefit that the taxpayer receives for increasing this year's spending is cut in half, and the MER is reduced to 4.6 percent.[Footnote 24] If the taxpayer anticipated that its future spending would decline so much that it would not be able to earn any credit in the next 3 years, then there would be no negative future consequences from increasing this year's spending and the MER would be 9.1 percent. However, if a taxpayer does not expect to exceed its base in the current year, even after increasing its spending by a marginal amount, but plans to increase its future spending enough to earn credits in the future years, then it would receive no current benefit for that marginal spending. The taxpayers would still suffer the negative effects in the future years, meaning that, in this case, the MER would actually be negative. Figure 3: Illustration of How Current Spending Increases Reduce Future Credits Under the ASC: [Refer to PDF for image: illustration] This illustration depicts taxpayer marginal spending: Spending on research that taxpayer would have done anyway: range is $1 million to $10 million. Marginal spending in year 1: Base amounts without the marginal spending in Year 1: Increase in future base amounts due to the marginal spending: Causes an increase in the base for the three following years that, in turn, reduces the credit the taxpayer earns in those years. Source: GAO. [End of figure] Given that the ASC base is only one-half of the taxpayer's past 3 years' average spending, most research-performing companies should be able to earn some credit every year, which was an important reason why this option was introduced. However, the low base is likely to be below most taxpayer's ideal base and some are likely to earn credit on substantial amounts of research spending that they would have done anyway. There currently is no minimum base for the ASC to limit the amount of windfall credit that taxpayers can earn. Only the lower credit rate (14 percent vs. 20 percent for the regular credit) contains the cost of these windfalls. The Introduction of the ASC Option Is Likely to Have Lowered the Bang- per-Buck of the Research Credit but Increased the Number of Taxpayers Receiving Positive Incentives: By applying the credit rules that existed immediately prior to the introduction of the ASC to the historical data for our panel of corporations and, then, applying the rules that existed in 2009, we were able to compare how these taxpayers would have fared under the different sets of options available. If we assumed a relatively low discount rate and short length of carryforward (for those who could not use their credits immediately), then the estimated weighted average MER for our panel prior to the introduction of the ASC ranged between 7.4 percent and 8.3 percent, depending on which years of data we used and whether the data related to before or after amendments and IRS exams. [Footnote 25] If the ASC option had been available to these corporations and they chose the credit option that provided them the largest amount of credit, we estimate that their weighted average MER would have been between 5.6 percent and 6.3 percent. (See table 14 in appendix II.) This decline in the MER would have been accompanied by an increase in the revenue cost of the credit of between about 17 percent and 29 percent.[Footnote 26] These results indicate that the introduction of the ASC lowered the bang-per-buck of the credit. The availability of the new option would not have reduced any taxpayer's windfall credit, but it would likely have increased the windfalls of some. Those taxpayers that would have switched from the regular credit to the ASC are likely to have seen their MERs decline, while those who switched from the AIRC may have seen their MERs increase or decrease. [Footnote 27] Our estimates are based on an analysis of a fixed population of corporations; it does not reflect the effects of the likely increase in the number of taxpayers claiming the credit thanks to the lower base of the ASC. The addition of these new claimants likely would have reduced the credit's bang-per-buck further because they would all have the lower MERs provided by the ASC. The MERs of these taxpayers would be higher than the zero MERs they faced before the ASC was available; however, the revenue cost of providing them with the credit, which also was zero previously, would have increased as well. Changing the Regular Credit to Reduce Distortions Caused by Base Inaccuracies Would Come at the Cost of Reducing the Credit's Bang-per- Buck: The problems we identified with the base of the regular credit can be addressed by either (1) eliminating the regular credit option or (2) retaining the regular credit but updating its base so that the distribution of credit benefits and incentives across taxpayers would be less uneven and arbitrary. Under either of these approaches the primary bases for all taxpayers would be linked to their recent spending behavior, rather than decades-old behavior. The recent behavior is likely to be more closely correlated with their ideal bases than the older behavior would be. The results of our simulations (summarized in the top portion of table 2) indicate that both of these changes would have approximately the same effect because, in each case, all of the corporations in our panel would use the ASC.[Footnote 28] (Details of our results are presented in tables 15 and 16 in appendix II.) Under the first change, the ASC would be the only option available; under the second change, all of the taxpayers would receive larger amounts of credits under the ASC than under the regular credit (except for those that could not earn either credit), so they would voluntarily choose the ASC.[Footnote 29] In both cases, if the rate of the ASC is kept at 14 percent, both the average MER and the revenue cost would decrease, but the percentage decrease in the average MER in most cases would be at least twice as large, meaning that the credit's bang-per-buck would decrease. If the rate of the ASC were raised to 20 percent, the average MER would increase relative to existing rules under most combinations of assumptions, but the revenue cost would increase to a much larger extent, again, meaning that the bang-per-buck would decrease. No clear purpose would be served by retaining both the ASC and a regular credit whose base would be updated almost as frequently as that of the ASC. If the bases for both of the options were linked to recent spending behavior, there would be no rationale for providing taxpayers with different rates of credit under two options. Moreover, once taxpayers began to expect regular updates of the base, the expected negative effects on future credits would lower the MER of the regular credit in the same way that they do for the ASC. One potential compromise between a frequently updated base that significantly reduces the credit's bang-per-buck and a fixed base that causes distorting disparities is to have a base that is updated only in those cases where it has become evidently far out of line for individual taxpayers. For example, taxpayers that spend less than 75 percent of their base amount for the regular credit could be given the option of using a more recent period of years for computing their fixed base percentage. Taxpayers at the other extreme--those subject to the current minimum base--could be required to use a more recent base period. Taxpayers between these two extremes would not have their bases updated, which means that, if they are not close to the minimum base, they would not face negative future effects. However, one significant problem with this approach is that it would give taxpayers who are close to being subject to the minimum base an extremely large disincentive to increase their spending. In addition, the taxpayers without updated bases would still face the substantial recordkeeping difficulties that are discussed in a later section. Table 2: Summary Comparison of Leading Design Options: Options for the ASC: No minimum base and credit rate = 14 percent; Options for the regular credit: Eliminate the regular credit option: Relative to 2009 law, this combination is likely to reduce both the average MER and the revenue cost; however, it is likely to reduce the average MER to a greater degree, resulting in a decline in the credit's bang-per-buck; The benefit of this combination is that it would significantly reduce unintended disparities in MERs across taxpayers; Options for the regular credit: Retain the option but update the base[A]: If no minimum base were added to the ASC the short-term results of updating the base of the regular credit would differ only minimally from those of eliminating the regular credit because all taxpayers in our panel would choose the ASC over the regular credit; Over the longer term, until the base is updated again, the situation is likely to gradually approach that which existed under 2009 law. Options for the ASC: No minimum base and credit rate = 20 percent; Options for the regular credit: Eliminate the regular credit option: Raising the rate of the ASC to 20 percent would increase the revenue cost significantly and also increase the average MER under most of the combinations of assumptions we examined. The increases in the average MER would be smaller than the increases in the revenue cost, again resulting in a decline in the credit's bang-per-buck; This combination would also significantly reduce unintended disparities in MERs across taxpayers; Options for the regular credit: Retain the option but update the base[A]: Same as above in the short term. Over the longer term, there should be a slower and smaller shift back to use of the regular credit if the ASC rate is raised to 20 percent. Options for the ASC: 50-percent minimum base and credit rate = 14 percent; Options for the regular credit: Eliminate the regular credit option: Relative to having only an ASC with no minimum base, this design is likely to provide the same incentive at a lower revenue cost, thereby providing a higher bang-per-buck; Options for the regular credit: Retain the option but update the base[A]: If the rate of the ASC were kept at 14 percent, some taxpayers would choose the regular credit option over the ASC. Those taxpayers receive a higher MER than they would with the ASC, raising the average MER for the whole population; In the short run, before the inaccuracy of the regular credit's base grows, unintended disparities in MERs should be no worse than with the ASC only. Options for the ASC: 50-percent minimum base and credit rate = 20 percent; Options for the regular credit: Eliminate the regular credit option: Same as immediately above; Options for the regular credit: Retain the option but update the base[A]: The results of this design would differ only minimally from those of allowing only an ASC with a 20-percent rate and a 50-percent minimum base because almost all taxpayers in our panel would choose the ASC over the regular credit. Options for the ASC: 75-percent minimum base and credit rate = 14 percent; Options for the regular credit: Eliminate the regular credit option: Under almost all assumptions we found the revenue savings to be less than or equal to those gained by adding a 50-percent minimum base; Options for the regular credit: Retain the option but update the base[A]: If the rate of the ASC were kept at 14 percent, some taxpayers would choose the regular credit option over the ASC. Those taxpayers receive a higher MER than they would with the ASC, raising the average MER for the whole population; In the short run, before the inaccuracy of the regular credit's base grows, unintended disparities in MERs should be no worse than with the ASC only. Options for the ASC: 75-percent minimum base and credit rate = 20 percent; Options for the regular credit: Eliminate the regular credit option: Under almost all assumptions we found the revenue savings to be less than or equal to those gained by adding a 50-percent minimum base; Options for the regular credit: Retain the option but update the base[A]: The results of this design would differ only minimally from those of allowing only an ASC with a 20-percent rate and a 50-percent minimum base because ASC users would still account for between and 90 percent of the total revenue cost of the credit. Source: GAO. [A] The minimum base for the regular credit would be 50 percent, except in the last two cases where it would be 75 percent. [End of table] The Credit's Bang-per-Buck Can Be Improved by Adding a Minimum Base Constraint to the ASC: Results from simulations based on our panel database suggest that adding a minimum base to the ASC is likely to improve its bang-per- buck.[Footnote 30] The effects of adding a minimum base vary, depending on whether both the ASC and regular option are retained, or only the former. These variations are summarized in the lower portion of table 2 and further details are provided in tables 17, 18 and 19 in appendix II. Under most combinations of assumptions that we examined, when an ASC is the only option available, an ASC with a 50-percent minimum base could provide the same average MER as an ASC without a minimum base, but at a lower revenue cost. In all but one unlikely case, the reductions in discounted revenue cost ranged between 1.5 percent and 18 percent with most exceeding 3 percent.[Footnote 31] Revenue savings would be achieved regardless of whether the rate of the ASC is 14 percent or 20 percent. We also examined the effects of adding a 75-percent minimum base; however, under almost all assumptions we found the revenue savings to be less than or equal to those gained by adding a 50-percent minimum base. If both the ASC with a 14-percent rate and the regular credit with a 20- percent rate and an updated base are available, the addition of a minimum base to the ASC would cause some taxpayers to prefer the regular credit over the ASC.[Footnote 32] Those regular credit users would have higher MERs than they would have had under the ASC, so the average MER would be higher if both options were available. Those users' credit amounts would also be higher; however, the percentage differences in their credits would be smaller than the percentage differences in their MERs (see tables 18 and 19), meaning that the credit's bang-per-buck would be slightly higher. However, this advantage in terms of bang-per-buck would come at the cost of providing unequal incentives across taxpayers without a rationale. In addition to examining the effects of adding a minimum base to the ASC we also simulated the effects of increasing the credit's base rate (i.e., having the base equal to 75 percent or 100 percent of a taxpayer's 3-year moving average of spending, rather than 50 percent as under current rules). We found that these changes would significantly increase the percentage of our panel corporations that have negative MERs. Issues of Contention between Taxpayers and IRS Relating to the Research Credit Are Both Extensive and Acute: Several Aspects of the Definition of Qualified Research Expenses Have Been Significant Sources of Contention between Taxpayers and IRS: A well-targeted definition of QREs (and IRS's ability to enforce the definition) can improve the efficiency of the credit to the extent that it directs the subsidy toward research with high external benefits and away from research with low external benefits. By focusing the subsidy in this manner, the definition can increase the amount of social benefit generated per dollar of tax subsidy provided through the credit. Specifying a definition that serves this purpose and that is also readily applied by both IRS and taxpayers has proven to be a challenge for both Congress and the Department of the Treasury. There are numerous areas of disagreement between IRS and taxpayers concerning what types of spending qualify for the research credit. These disputes raise the cost of the credit to both taxpayers and IRS and diminish the credit's incentive effect by making the ultimate benefit to taxpayers less certain. Many of the tax practitioners we interviewed had a common general complaint that IRS examiners often demanded that the research activities result in a higher standard of innovation than required by either the IRC or Treasury regulations. The IRS officials we interviewed disagreed with these assertions and referred to language from their Research Credit Audit Technique Guide that instructs examiners on the relevant language from current regulations. Both practitioners and IRS officials acknowledged that some controversies arise because language in the IRC and regulations does not always provide a bright line for identifying qualified activities. For example, one qualification requirement is that the research must be intended to eliminate uncertainty concerning the development or improvement of a business component. The regulations say that uncertainty exists "if the information available to the taxpayer does not establish the capability or method for developing or improving the business component, or the appropriate design of the business component.[Footnote 33]" An IRS official said that examiners could use clarification of the meaning of "information available to the taxpayer," while a practitioner noted that the regulations do not say what degree of improvement in a product is required for the underlying research to be considered qualified. The practitioner said that research for improvements is more difficult to get qualified than research for new products. Several particularly contentious issues relate to specific types of research activities or expenses, including the following:[Footnote 34] The definition and qualification standards for internal-use software (IUS). Research relating to the development of software for the taxpayer's own internal use is generally excluded from qualified research, unless it meets an additional set of standards that are not applied to other research activities.[Footnote 35] The IRC provides Treasury the authority to specify exceptions to this exclusion but Treasury did not address this issue when it published final research credit regulations in 2004. Treasury pointed to the significant changes in computer software and its role in business activity since the mid- 1980s (when the IUS exclusion was added to the IRC) as making it difficult to determine how Congress intended the new technology to be treated. Meanwhile, tax practitioners complain that IRS continues to consider most software development expenditures in the services industry to be IUS.[Footnote 36] Some commentators have questioned whether there is still an economic rationale for distinguishing between IUS and software used for other purposes, given that innovations in software can produce spillover benefits regardless of whether the software is sold to third parties. IRS officials say that eliminating the distinction would significantly increase the revenue cost of the credit but they doubt that it would simplify administration. They believe that a bright-line definition of IUS, such as that contained in 2001 proposed regulations, is the only practical approach for dealing with this issue.[Footnote 37] The development of IUS regulations has been included in all of Treasury's priority guidance plans since the issue was left out of the final research credit regulations; however, Treasury officials have not indicated when they are likely to be issued or what stand they are likely to take. Late-stage testing of products and production processes. Treasury regulations provide that "the term research or experimental expenditures does not include expenditures for the ordinary testing or inspection of materials or products for quality control (quality control testing)." However, the regulations clarify that "quality control testing does not include testing to determine if the design of the product is appropriate."[Footnote 38] Some tax consultants told us that IRS fairly consistently disqualifies research designed to address uncertainty relating to the appropriate design of a product. One of them said that IRS rejected testing activities simply on the basis of whether the testing techniques, themselves, were routine. IRS officials said that they typically reject testing that is done after the taxpayer has proven the acceptability of its production process internally. They noted that there is no bright line between nonqualifying ordinary quality control testing and qualified validation testing. These determinations are made on a case-by-case basis for each activity. The official also said that they have disagreements with taxpayers over when commercial production begins and suggested that this is one area where some further clarification in regulations might help. Product testing is a particularly important issue for software development, which in general (not just IUS) is another area of significant contention between IRS and taxpayers. Direct supervisory and support activities. Qualified research expenses include the wages of employees who provide direct supervision or direct support of qualified research activities. The practitioners we interviewed said that it is extremely difficult to get IRS to accept that higher level managers are often involved in research and the direct supervision of research. Many of their clients have flat organizational structures and the best researchers are often given higher titles so that they can be paid more. They say that IRS often rejects wage claims simply on the basis of job titles. IRS officials told us that wages of higher level managers could be eligible for the credit; however, the burden of proof is on the taxpayer to substantiate the amount of time that those managers actually spent directly supervising a qualified activity. Regarding the issue of direct support, some commentators would like IRS's guidance to more clearly state that activities such as bid and proposal preparation (at the front end of the research process) and development testing and certification testing (at the final stages of the process) are qualified support activities that do not have to meet specific qualification tests themselves, as long as the activities that they support already qualify as eligible research. IRS officials told us that they would like better guidance on this issue and were concerned that some taxpayers want to include the wages of anyone with any connection at all to the research, such as marketing employees who attend meetings to talk about what customers want. Supplies. The IRC specifically excludes expenditures to acquire depreciable property from eligibility for either the deduction of research expenditures under section 174 or for the research credit. [Footnote 39] Taxpayers have attempted to claim the deduction or the credit for expenditures that they have made for labor and supplies to construct tangible property, such as molds or prototypes, that they used in qualified research activities. IRS has taken the position that such claims are not allowed (even though the taxpayers do not, themselves, take depreciation allowances for these properties) because the constructed property is of the type that would be subject to depreciation if a taxpayer had purchased it as a final product. [Footnote 40] IRS also says that it is also improper for taxpayers to include indirect costs in their claims for "self-constructed supplies," even when the latter are not depreciable property.[Footnote 41] Taxpayers are challenging IRS's position in at least one pending court case.[Footnote 42] Both taxpayers and IRS examiners would like to see clearer guidance in this area. Treasury has had a project to provide further guidance under section 174 in its priority guidance plans since at least 2005 but the guidance has not yet been issued. IRS has also been concerned with the extent to which taxpayers have attempted to recharacterize ineligible foreign research services contracts as supply purchases. The Lack of Official Guidance Regarding the Definition of Gross Receipts for Controlled Groups of Corporations Leaves Those Taxpayers Very Uncertain about Their Credit Benefits: For taxpayers claiming the regular research credit the definition of gross receipts is important in calculating the "base amount" to which their current-year QREs are compared. The definition also was critical for determining the amount of credit that taxpayers could earn with the AIRC. (Even though this credit option is no longer available, a decision regarding the definition of gross receipts will affect substantial amounts of AIRC claims that remain in contention between taxpayers and IRS for taxable years before 2009.) Gross receipts do not enter into the computation of the ASC or the basic research credit. If the regular credit is eliminated, this becomes a nonissue for future tax years, but the consequences for taxpayers and the revenue cost to the government from past claims will be substantial (particularly as a result of the extraordinary repatriation of dividends in response to the temporary incentives under IRC section 965).[Footnote 43] The principal issue of contention between taxpayers and IRS is the extent to which sales and other types of payments among members of a controlled group of corporations should be included in that group's gross receipts for purposes of computing the credit.[Footnote 44] Neither the IRC nor regulations are clear on this point and IRS has issued differing legal analyses in specific cases over the years. IRS's current interpretation of the credit regulations that generally exclude transfers between members of controlled groups is that it applies only to QREs and not to gross receipts; consequently, all intragroup sales should be included when computing a group's total gross receipts. This option would eliminate any double-counting of QREs but could overstate the resources available to the group by double- counting sales and income payments between group members. However, going to the other extreme and excluding all intragroup transactions from the group's total gross receipts could exclude a large share of the export sales of U.S. multinational corporations (those made to foreign affiliates for subsequent resale abroad) from gross receipts. This result would favor regular credit users whose export sales have increased as a share of their total sales and disfavor users whose export shares have declined. These disparities in the credit benefits across taxpayers serve no useful purpose. An intermediate alternative would be to exclude all transactions between controlled group members except for intermediate sales by U.S. members to foreign members. This approach would not discriminate among taxpayers on the basis of whether they export their products or sell them domestically because it would include all sales that are effectively connected with the conduct of a trade or business within the United States in a group's gross receipts. This option would also eliminate any double-counting of intragroup transfers in gross receipts, which is important if Congress wishes to continue using gross receipts as a measure of the resources available to corporations. Substantiating the Validity of a Research Credit Claim Is a Demanding Task for Both Taxpayers and IRS: Neither the IRC nor Treasury regulations contain specific recordkeeping requirements for claimants of the research credit. However, claimants are subject to the general recordkeeping rules of IRC section 6001 and Treasury regulations section 1.6001, applicable to all taxpayers, that require them to keep books of account or records that are sufficient to establish the amount of credit they are claiming. In the case of the research credit, a taxpayer must provide evidence that all of the expenses for which the credit is claimed were devoted to qualified research activities, as defined under IRC section 41. Section 41 requires that the qualification of research activities be determined separately with respect to each business component (e.g., a product, process, or formula), which means that the taxpayer must be able to allocate all of its qualified expenses to specific business components. Moreover, the taxpayer must be able to establish these qualifications and connections to specific components not only for the year in which the credit is being claimed, but also for all of the years in its base period. There were wide difference in opinions between the IRS examiners and the tax practitioners we interviewed regarding what methods are acceptable for allocating wages between qualifying and nonqualifying activities. Practitioners noted that IRS prefers project accounting but, in its absence, used to accept cost center or hybrid accounting; however, in recent years, IRS has been much less willing to accept claims based on the latter two approaches.[Footnote 45] They also said that IRS examiners now regularly require contemporaneous documentation of QREs, even though this requirement was dropped from the credit regulations in 2001. Some practitioners suggested that the changes in IRS's practices came about because examiners were having difficulty determining how much QREs to disallow in audits when they found that a particular activity did not qualify. Others said that IRS does not want to devote the considerable amounts of labor required to review the hybrid documentation. The IRS officials we interviewed said that more taxpayers have or had project accounting than was suggested by the tax practitioners. The officials said that the consultants ignored these accounts because they boxed them in (in terms of identifying qualified research expenses). In their view the high-level surveys and interviews of managers or technical experts from the business, which many taxpayers try to use as evidence, are not a sufficient basis for identifying QREs. The officials noted that sometimes consultants conduct interviews for one tax year and then extrapolate their results to support credit claims for multiple earlier tax years. IRS officials have been particularly concerned with the quality of late or amended filings of credit claims. In April 2007, IRS designated "research credit claims" as a Tier I compliance issue because of the volume and difficulty of auditing these claims.[Footnote 46] In announcing the designation IRS noted that a growing number of credit claims were based on marketed tax products supported by studies prepared by the major accounting and boutique tax advisory firms. IRS officials expressed concern that when taxpayers submit amendments to their IRS Forms 6765, they often do so late in an audit after IRS has already spent significant time reviewing the initial claims. In many cases the taxpayers settle for 50 cents on the dollar as soon as IRS challenges a claim. Although most of the tax practitioners we interviewed acknowledged that there was a proliferation of aggressive and sometimes sloppy research credit claims, they pointed to many legitimate reasons for companies to file claims on amended returns, including long-standing uncertainties and changes in the research tax credit regulations. The practitioners say that IRS's standards are stricter than Congress intended and what has been allowed in recent court cases. IRS disagrees and says its administrative practices are consistent with the court rulings. [Footnote 47] The burden of substantiating research credit claims represents a significant discouragement to potential credit users; however, the flexibility in substantiation methods that many practitioners seek could help some taxpayers claim larger credits than those to which they are entitled. Although some taxpayers, particularly those for which research activities constitute a large proportion of their total operations, are able to meet the recordkeeping standards that IRS is currently enforcing, many taxpayers would find it extremely burdensome to meet these requirements. One consulting firm told us that they recently tried to shift all of their clients to project accounting. This effort was successful; however, it was extremely difficult for the businesses. Other practitioners said that many taxpayers simply would not take on such an effort just to claim the credit. Allowing taxpayers to allocate their expenses between qualified and nonqualified activities after the fact and, in part, on the basis of oral testimony of the taxpayers' experts would be less burdensome for businesses than requiring contemporaneous time accounting by type of activity and by specific project. However, the experts would have an incentive to overstate the proportion of labor costs identified as QREs and IRS would have no way to verify these oral estimates. Treasury and IRS face a difficult trade-off between, on the one hand, increasing taxpayer compliance burdens and deterring some taxpayers from using the credit and, on the other hand, accepting overstated credit claims. Substantiating Base Period QREs Is Extremely Challenging: All of the difficulties that taxpayers face in substantiating their QREs are magnified when it comes to substantiating QREs for the historical base period (1984 through 1988) of the regular credit. Taxpayers are required to use the same definitions of qualified research and gross receipts for both their base period and their current-year spending and receipts. However, many firms do not have good (if any) expenditure records dating back to the early 1980s base period and are unable to precisely adjust their base period records for the changes in definitions promulgated in subsequent regulations and rulings. Taxpayers also have great difficulty adjusting base period amounts to reflect the disposition or acquisition of research- performing entities within their tax consolidated groups. Some practitioners would like to see some flexibility on IRS's part in terms of base period documentation. They noted that in cases where a taxpayer's records are missing or otherwise lacking, courts have permitted taxpayers to prove the existence and amount of expenditure through reasonable estimation techniques. The IRS officials we interviewed said that estimates are allowable only if the taxpayer clearly establishes that it has engaged in qualified research and that its estimates have a sufficiently credible evidentiary basis to ensure accuracy. One official noted that IRS not likely to question a taxpayer's base amount if the latter uses the maximum fixed base percentage; however, he did not think that IRS would have the authority to say that taxpayers could take that approach without showing any records at all for the base period. Neither IRS nor Treasury officials we interviewed saw any administrative problems arising if the IRC were changed to relieve taxpayers of the requirement to maintain base period records if they used the maximum fixed base percentage.[Footnote 48] Taxpayers Would Benefit from Greater Flexibility in Electing the ASC Option: Treasury regulations provide that elections to use the ASC or the AIRC must be made on an original timely filed return for the taxable year and may not be made on a late filed return or an amended return. [Footnote 49] Some commentators on the regulations have questioned the need for such limitations on taxpayers' ability to make the elections, which they note the IRC does not specify. These commentators see no reason why taxpayers who do not claim a credit until they file an amended return are permitted to claim the regular credit but not the ASC. They also believe that taxpayers should be allowed to change their election if, as a result of an audit, IRS adjusts the amount of QREs or base QREs in a manner which would make an alternative election more advantageous to the taxpayer. Treasury officials whom we interviewed said the legal "doctrine of election" indicates that taxpayers must remain committed to their choice once they have made their credit election.[Footnote 50] If taxpayers are unhappy with the form of credit, they can choose another form for the following tax year. Allowing taxpayers to elect different forms of the credit on amended returns in response to an audit in order to maximize their credit would create administrative burdens for IRS. IRS officials agreed that permitting changes in credit elections could require examiners to audit some taxpayers' credits twice; however, they saw no problem with allowing taxpayers to claim either alternative credit on an amended return if the taxpayer had not previously filed a regular credit claim for the same tax year. Taxpayers that fail to claim the research credit on timely filed tax returns are materially disadvantaged by the election limitations that apply to any subsequent claims they file on amended returns. There appears to be no reason to prohibit taxpayers from electing either the ASC or AIRC method of credit computation on an amended return for a given tax year, as long as they have not filed a credit claim using a different method on an earlier return for that same tax year. Existing Rules for Allocating Group Credits Are Unnecessarily Burdensome: Under current Treasury regulations, the controlled group of corporations must, first, compute a "group credit" by applying all of the credit computational rules on an aggregate basis. The group must then allocate the group credit amount among members of the controlled group in proportion to each member's "stand-alone entity credit." The stand-alone entity credit means the research credit (if any) that would be allowed to each group member if the group credit rules did not apply. Each member must compute its stand-alone credit according to whichever method provides it the largest credit for that year without regard to the method used to compute the group credit. The consultants with whom we discussed this issue agreed that the rules were very burdensome for those groups that are affected because it forces all of their members to maintain base period records for the regular credit, even if they would like to use just the ASC.[Footnote 51] Some very large corporate groups must do these computations for all of their subsidiaries, which could number in the hundreds, and they have no affect on the total credit that a group earns. Treasury maintains that a single, prescribed method is necessary to ensure the group's members collectively do not claim more than 100 percent of the group credit. Treasury also maintains that the stand- alone credit approach is more consistent with Congress's intent to have an incremental credit than is the gross QRE allocation method that others have recommended.[Footnote 52] In specifying that controlled groups be treated as single taxpayers for purposes of the credit Congress clearly wanted to ensure that a group, as a whole, exceeded its base spending amount before it could earn the credit. It is not clear that Congress was concerned that each member has an incentive to exceed its own base. The reason for having a base amount is to contain the revenue cost of the credit by focusing the incentive on marginal spending. In the case of controlled groups the cost is controlled at the group level; whether individual members exceed their own bases has no bearing on the cost of the credit. If the choice between two allocations methods does not affect the revenue cost, then the remaining questions follow: 1. Does one of the methods provide a greater incentive to increase research spending? 2. Is one significantly less burdensome to taxpayers and IRS? For groups in which individual members determine their own research budgets, neither the stand-alone credit allocation method nor the gross QRE allocation method is unequivocally superior in terms of the marginal incentives that they provide to individual members. Each of the two methods performs better than the other in certain situations that are likely to be common among actual taxpayers.[Footnote 53] Data are not available that would allow us to say whether one of the methods would result in higher overall research spending than the other. For those groups in which the aggregate research spending of all members is determined by group-level management, the only way that the allocation rules can affect the credit's incentive is if they allow the shifting of credits from members without current tax liabilities to those with tax liabilities. If the group credit is computed according to the method that yields the largest credit, then an additional dollar of spending by any group member will increase the group credit by the same amount, regardless of how the group credit total is allocated among members. The gross QRE allocation method is much less burdensome for controlled groups and for IRS than the stand-alone method because it does not require anyone to maintain base-period records for the regular credit, unless they choose to use that credit themselves. If the regular credit were eliminated, the burden associated with the stand-alone method would be reduced considerably; however, it would still require more work on the part of taxpayers and IRS than would the gross QRE method. Conclusions: Two significant concerns arise from the lack of any update of the regular credit's base since it was introduced in 1989. First, the misallocation of resources that can result from the uneven distribution of both marginal incentives and windfall benefits across taxpayers could lead to missed opportunities for the country to benefit from research projects with higher social rates of return. Second, the requirement to maintain detailed records from the 1980s, updated for subsequent changes in law and regulations, represents a considerable compliance burden for regular credit users (including some that are required to use that option). Regular updates of the base would substantially reduce these problems; however, no clear purpose would be served by retaining both the ASC and a regular credit, the base of which would be updated almost as frequently as that of the ASC. Unfortunately, neither of the problems can be avoided without a reduction in the credit's bang-per-buck. The addition of a minimum base to the ASC would likely improve the bang-per-buck of that credit (the extent would depend on certain estimating assumptions) and also reduce inequities in the distribution of windfall credits. The research credit presents many challenges to both taxpayers and IRS. In a number of areas, current guidance for identifying QREs does not enable claimants or IRS to make bright-line determinations. In some of these areas further clarification is possible; in others ambiguity may be difficult to reduce. In some cases, drawing lines that make the definition of QREs more liberal would likely result in the credit being less well-targeted to research with large spillover benefits to society. Instead, the credit would be shifted toward a broader subsidy for high-tech jobs or manufacturing in general. Documenting and verifying that particular expenses are qualified for the credit involve considerable resource costs on the part of taxpayers and IRS. Moreover, widespread disagreements between IRS and taxpayers over the adequacy of documentation leave many taxpayers uncertain about the amounts of credit they will ultimately receive. Recordkeeping burdens may discourage some taxpayers from using the credit and the uncertainty reduces the credit's effective incentive. Relaxing recordkeeping requirements would alleviate these problems; however, there remains a risk that such a relaxation could significantly increase the amount of credit provided for spending of questionable merit. Despite the current wide gap between the views of taxpayers and IRS, there may be opportunities to reduce certain burdens without opening the door to abuse. At a minimum, an organized dialogue among Treasury, IRS, and taxpayers should be able to reduce some uncertainty over what types of documentation are acceptable. Matters for Congressional Consideration: In order to reduce economic inefficiencies and excessive revenue costs resulting from inaccuracies in the base of the research tax credit, Congress should consider the following two actions: * Eliminating the regular credit option for computing the research credit. * Adding a minimum base to the ASC that equals 50 percent of the taxpayer's current-year qualified research expenses. If Congress nevertheless wishes to continue offering the regular research credit to taxpayers, it may wish to consider the following three actions to reduce inaccuracies in the credit's base and to reduce taxpayers' uncertainty and compliance costs and IRS's administrative costs: * Updating the historical base period that regular credit claimants use to compute their fixed base percentages. * Eliminating base period recordkeeping requirements for taxpayers that elect to use a fixed base percentage of 16 percent in their computation of the credit. * Clarifying for Treasury its intent regarding the definition of gross receipts for purposes of computing the research credit for controlled groups of corporations. In particular it may want to consider clarifying that the regulations generally excluding transfers between members of controlled groups apply to both gross receipts and QREs and specifically clarifying how it intended sales by domestic members to foreign members to be treated. Such clarification would help to resolve open controversies relating to past claims, even if the regular credit were discontinued for future years. Recommendations for Executive Action: In order to allow more taxpayers to benefit from the reduced recordkeeping requirements offered by the ASC option, the Secretary of the Treasury should take the following two actions: * Modify credit regulations to permit taxpayers to elect any of the computational methods prescribed in the IRC in the first credit claim that they make for a given tax year, regardless of whether that claim is made on an original or amended tax return. * Modify credit regulations to allow controlled groups to allocate their group credits in proportion to each member's share of total group QREs, provided that all group members agree to this allocation method. In order to significantly reduce the uncertainty that some taxpayers have about their ability to earn credits for their research activities, the Secretary of the Treasury should take the following six actions: * Issue regulations clarifying the definition of internal-use software. * Issue regulations clarifying the definition of gross receipts for purposes of computing the research credit for controlled groups of corporations. * Issue regulations regarding the treatment of inventory property under section 174 (specifically relating to the exclusion of depreciable property and indirect costs of self-produced supplies). * Provide additional guidance to more clearly identify what types of activities are considered to be qualified support activities. * Provide additional guidance to more clearly identify when commercial production of a qualified product is deemed to begin. * Organize a working group that includes IRS and taxpayer representatives to develop standards for the substantiation of QREs that: - can be built upon taxpayers' normal accounting approaches, - but also exclude practices IRS finds of greatest threat to compliance, such as high-level surveys and claims filed long after the end of the tax year in which the research was performed. Agency Comments: We provided a draft of this report to the Secretary of Treasury and the Commissioner of IRS in September 2009. In written comments the Acting Assistant Secretary (Tax Policy) agreed that the credit's structure could be simplified or updated in certain respects to improve its effectiveness. He also agreed that the issuance of guidance relating to the definition of gross receipts, the treatment of inventory property under section 174, and the definition of internal use software will enhance the administration of the credit and Treasury plans to provide additional guidance in the next few months. The Acting Assistant Secretary said that the Administration's priority is to make the credit permanent. His letter is reprinted in appendix VIII. Treasury and IRS officials also provided technical comments that we have addressed as appropriate. As we agreed with your offices, unless you publicly announce the contents of this report, we plan no further distribution of it until 30 days from the date of this letter. This report is available at no charge on GAO's web site at [hyperlink, http://www.gao.gov]. If you or your staff have any questions on this report, please call me at (202) 512-9110 or whitej@gao.gov. Contact points for our Office of Congressional Relations and Public Affairs may be found on the last page of this report. Key contributors to this report are listed in appendix VIII. Signed by: James R. White: Director Tax Issues: Strategic Issues: [End of section] Appendix I: Scope and Methodology: Computation of the Marginal Effective Rate of Credit: The Regular Credit Case: If a taxpayer's marginal spending in the current tax year leaves its total qualified spending above its base spending (but not equal to two or more times the base amount determined by its fixed base percentage), the marginal benefit the taxpayer receives from the regular credit equals: 0.2 × 0.65 × marginal spending, The factor of 0.65 reflects the fact that the taxpayer must either elect to reduce its credit by 35 percent or reduce the size of its section 174 deduction for research spending by the amount of the credit. In either case, for taxpayers subject to the typical 35 percent corporate income tax rate, the benefit of the credit is reduced by 35 percent. In addition, if the taxpayer cannot use all of its credit in the current tax year or carry it back to use against last year's taxes, then the net present value of the benefit is reduced according to the following formula: Discounted benefit = (0.2 × 0.65 × marginal spending) × (1 + r)-Y0 , where r is the taxpayer's discount rate and y0 is the number of years before the taxpayer is able to use the credit. If a taxpayer's marginal spending in the current tax year leaves its total qualified spending equal to two or more times the base amount determined by its fixed base percentage, the discounted marginal benefit the taxpayer receives from the regular credit equals: (0.1 × 0.65 × marginal spending) × (1 + r)-Y0, because each additional dollar of spending raises the taxpayer's base by 50 cents. Consequently, the taxpayer's benefit is effectively cut in half. If the taxpayer's total current-year spending is less than its base spending (even after the marginal spending), then: Current benefit = 0. The Alternative Simplified Credit Case - Current year Effects: Under the alternative simplified credit (ASC) a taxpayer may receive a benefit in the current tax year by spending additional (also known as marginal) amounts on qualified research in that year. However, this additional spending also reduces the potential tax benefits that the taxpayer can earn in the 3 succeeding years. The marginal effective rate (MER) measures the net present value of the current tax benefit and the reductions in future tax benefits resulting from the firm's additional spending on research, all as a percentage of the additional spending. Current-Year Benefit: If the taxpayer's total current-year spending is greater than its base spending, then: Current benefit = 0.14 × 0.65 × marginal spending × (1 + r)-Y0. If the taxpayer's total current-year spending is less than its base spending (even after the marginal spending), then: Current benefit = 0. The Alternative Simplified Credit Case - Future-Year Effects: Given that the base spending amount for the next tax year equals half of the taxpayer's average research spending in the current year and the 2 immediately preceding years, the marginal spending in the current year can reduce the value of the credit benefit the taxpayer can earn next year as follows: Benefit reduction next year = -(1/3) × 0.5 × 0.65 × 0.14 × current-year marginal spending × (1 + r)-Y1. The value of y1 equals 1 if the credit that the taxpayer loses in the next year could have been used that year. If that lost credit could not have been used until a later year anyway, then y1 equals the number of years between the current tax year and the year in which the lost credit could have been used. If the taxpayer's total qualified spending next year is less than its base spending (even after the marginal spending), then: Benefit reduction next year = 0. Benefit reductions in the second and third years into the future are computed in a similar manner. The Complete MER: Combining all of the effects described above yields the following formula for a taxpayer that exceeds its base spending every year: MER = {0.091 × marginal spending × [(1 + r)-Y0 - (1/6) × (1 + r)-Y1 - (1/6) × (1 + r)-Y2 - (1/6) × (1 + r)-Y3]} / marginal spending. If a taxpayer's total qualified spending is less than its base spending in any of the four years covered by this formula, then the "(1 + r)" term associated with that year would be set equal to zero. Computation of the Discounted Revenue Cost: To compute the discounted revenue cost we first compute the net credit (after the offset against the section 174 deduction or the election of a reduced credit) that each taxpayer would earn under existing or hypothetical credit rules, based on their current qualified research expenses (QREs), base QREs, and if relevant, gross receipts. We then use data from each taxpayer's Form 3800 to estimate the amount, if any, of research credit that the taxpayer could use immediately and the amount, if any, that it had to carry forward to future years. In cases where the credit had to be carried forward, we used ranges of assumptions for both discount rates and number of years carried forward (see sensitivity discussion below) to discount the value of credit amounts used in future years. Data Used for the Computations: Full Population Data: We based our estimates of credit use by the full population of corporate taxpayers on the Statistics of Income (SOI) Division's sample of corporate tax returns for 2003, 2004, and 2005. For 2003 and 2004 we were able to fill in some data that were missing for a few large credit claimants by using data we obtained from Internal Revenue Service (IRS) examiners for our panel database. For all 3 years we adjusted the data for members of controlled groups to avoid the double counting of QREs and gross receipts (see discussion below for further detail). The Panel Database of the Largest Credit Users: We began the construction of our panels by selecting all corporations that met either of the following criteria: The corporation's total QREs had to account for at least 0.2 percent of aggregate QREs for all firms in SOI's annual samples for either 2003 or 2004; or: The corporation's total grossed-up credit (meaning prior to any reduction under section 280(c)) had to account for at least 0.2 percent of aggregate grossed-up credits for all firms in SOI's annual samples for either 2003 or 2004. We attempted to obtain a complete set of tax returns from 2000 through 2004 for each corporate taxpayer that met our panel criteria for either 2003 or 2004. In addition, we tried to keep the scope of each corporate taxpayer over the 5 years to be as consistent as possible with that taxpayer's scope as of 2003 and 2004. (This consistency is important because we wanted the 5-year history of QREs for each taxpayer to closely represent the spending histories that they would actually have used for computing their moving-average base expenditures if the ASC had been in place for 2003 and 2004.) We constructed time series records for each taxpayer by linking the data from the taxpayer's returns from 2000 through 2004 by the Employer Identification Number (EIN) that SOI included in each year's tax return record. In some cases a taxpayer's time series was reported under more than one EIN over the period. This discontinuity usually occurred in cases of a corporate reorganization, such as a merger or spin-off. In cases where we did not find a complete 5-year set of tax returns for one of the EINs selected into our panel, we searched to see if we could find the missing returns under a different EIN. We focused our search on cases where taxpayers had reported substantial amounts of research credits or QREs for tax years early in our period and then they stopped appearing in SOI's corporate sample (because they stopped filing a return under their initial EIN). For example, we examined the cases of taxpayers that filed returns in 2000 and 2001 and then stopped filing returns to see if they were related to cases in our panel for which we were missing tax returns for those 2 years. If the companies that stopped filing returns were not related to any companies for which we were missing returns, we then checked to see if they were related to any other members of our panel (because they might have been merged into an ongoing corporation that kept the same EIN before and after the merger). Conversely, if the panel member for which we were missing early-year tax returns did not match up with any cases that had stopped filing after those years, we checked to see if that panel member had been spun off of any other panel member (meaning that it was once included in the consolidated tax return of the other panel member and than was either sold off or became deconsolidated and filed its own return). We did a similar examination for companies that showed dramatic changes in the level of their QREs from one year to the next. We extended our search for potential merger and spin-off candidates to any companies in the annual SOI samples that accounted for at least 0.1 percent of either QREs or grossed up credit in any year from 2000 through 2004. In this manner we identified a number of pairs of taxpayers that combined with or split off from one another during our panel period. We could usually confirm these corporate changes from publicly available information on the Internet, but we also had the IRS examiners review our linkages. In order to ensure that we did not miss any significant mergers or splits among our panel members, we asked the Large and Mid-Sized Business (LMSB) Division examiners that reviewed each case to identify any that we may have missed. We made the following adjustments to ensure the consistency of spending histories in cases where we had identified significant corporate reorganizations within our panel members: * In cases in which one of our panel members in 2003 or 2004 encompassed an entity that had filed its own tax return in an earlier year during the panel period, we added the QREs that the former return filer had reported for that year to the QREs that our panel member had reported in the same year (because those QREs of the formerly separate entity would be included in the panel member's moving average base amount under the ASC). * In cases in which one of our panel members in 2003 or 2004 had sold a subsidiary or spun off some other entity that had been included in its consolidated tax return in an earlier year of our panel period. We subtracted the estimated QREs of that spun-off entity from the panel member's QREs for that earlier year. (We assumed that the spun-off entity's share of total QREs in the earlier year was the same proportion as the following ratio: The spun-off entity's QREs in the first year that it filed its own return, divided by the sum of the spun- off companies QREs plus the QREs of the corporation from which it had been spun off.) By making these adjustments, we were able to create reasonably consistent spending histories for those cases where we had identified (on our own or with the assistance of IRS examiners) significant corporate reorganizations in our panel population. In a number of cases we concluded that we did not have sufficient information to construct reliably consistent time series and we, therefore, dropped those cases from our panel. Although we believe that we have accounted for all major mergers and splits within our panel members, we cannot be sure that we have accounted for all smaller acquisitions or dispositions that may have affected the consistency of the individual spending histories within the panel. For this reason, we ran a sensitivity analysis in which we examined the effects on our results of altering the relationship between current and base QREs for each taxpayer (see below). Adjusting for Group Credits: Taxpayers that are subject to the group credit rules are required to file their own Form 6765 on which they report their group's aggregate values for QREs, base QREs, and gross receipts; however, the credit amount reported on each member's form is that member's share of the total group's credit. (See appendix VII for an explanation of how these shares are computed.) Whether or not a member can actually use a group credit depends on its own tax position for the year, not on an aggregated group tax position. We used several indicators to identify potential group credit claimants, based on the reporting requirements described above. First, for claimants of the regular credit we computed the ratio of the amount of credit they claimed, divided by the difference between their current QREs and their base QREs. If this ratio was a value other than 0.13 or 0.2, we flagged the case as a potential group member. Second, for claimants of the alternative incremental research credit (AIRC), we computed the ratio of the credit they actually claimed over the amount of credit that they could have claimed if all of the QREs and gross receipts reported on their 6765 were their own. If this ratio was other than 1 or 0.65, we flagged the case as a potential group claimant. Third, we also searched the SOI databases for groups of cases that reported the same exact amounts of QREs in a given year. For the purpose of calculating the ASC for group members we gave each member of a group the group's aggregate spending history and gross receipts history; however, each member had its own amount of research credit claimed and its own values for the variables taken from the general business credit form. In order to avoid double-counting (or more) the QREs of the groups or giving them too much weight when computing our weighted average effective rates of credit, we created a variable named CREDSHR, which we then used to assign each group member only a fraction of the group's total QREs or weighting in the effective rate calculation. The value of CREDSHR for each group member is equal to the ratio of the amount of research credit that the member claimed over the aggregated amount of credit that the group would be able to claim, based on the group's aggregated QREs and base QREs or gross receipts. In other words, we gave each member a share of the group's QREs that was proportionate to its share of the group's total credit. Although this allocation method is not precisely derived from the group credit allocation regulations, it should yield a close approximation of the true distribution of QREs across group members. We do not have the detailed attachments to Form 6765 that show exactly what each group member's QREs and gross receipts were. In most cases the sum of CREDSHR for all members of a group in our panel population was approximately equal to 100 percent. When the sum did not reach 100 percent we assumed that there are other members who were not represented in the SOI sample for a given year. The absence of these missing members does not affect the validity of the computations for the group members we had; it simply means that the missing members were treated as any other company that did not meet the criteria for inclusion in our panel. Because some taxpayers in the panel belonged to controlled groups that together determined the amount of qualified spending in 2003 or 2004, we adjusted for the composition of these groups when we assembled the panel. In particular, spending and other variables were adjusted to hold constant the group's composition in 2003 or 2004, the 2 years for which credit was computed. This was accomplished in several ways. First, the SOI data allowed us to identify certain controlled groups from duplications in the amount of reported spending. Second, we researched mergers, acquisitions and dispositions for these firms from 2000 through 2004, or the years for which we constructed the panel. Third, we requested confirmation of our knowledge about these controlled groups from LMSB, in addition to any other information about the groups' composition that LMSB might have had. Clearly, constructing the panel involved balancing trade-offs between the number of users and the availability of data. Key Assumptions and Sensitivity Analyses: We tested the sensitivity of our results to variations in assumptions or observations concerning the following factors: Future credit status--The MER for the ASC depends, in part, on whether the taxpayer anticipates being able to earn the credit in each of the next 3 years and, if so, whether that taxpayer would be subject to a minimum base constraint. In order to predict the status for a given taxpayer in a given future year, we needed to predict, within a certain range,[Footnote 54] the ratio of spending in that year to the average of spending for the 3 years preceding that year. Our baseline prediction was that the probability of a taxpayer moving from one particular ratio range into another specific ratio range was equal the probability of such a move that we observed in our historical data. We used Markov chains of probabilities to predict changes in status two and three years into the future. In our sensitivity analysis, we examined 12 alternative sets of probabilities. For example, in one alternative all taxpayers were less likely to move into a higher range of ratios than they would have been with the observed probabilities. Switching probabilities--In choice scenarios, we were required to estimate the probability of switching from one credit to another in future years, which has the potential to influence the effect of research spending in 2003 or 2004 on the amount of credit earned in subsequent years for which data are not available. In our sensitivity analysis, we allowed the probability of switching from the ASC to the Regular Credit from one year to the next to be higher or lower than our baseline estimate (which was based on simulated behavior from 2003 to 2004). We did the same for the probability of switching from the Regular Credit to the ASC from one year to the next, and we incorporated all four possible combinations of deviations from the baseline. Discount rate--At higher rates of discount, credit that is carried forward to be claimed in subsequent years is worth less in present value terms in 2003 or 2004. Additionally, at higher discount rates, the effect of spending in 2003 or 2004 on the amount of credit earned in subsequent years is mitigated, since credit earned in subsequent years is worth less in present value terms in 2003 and 2004 at higher rates of discount. In our sensitivity analysis, we allowed the discount rate to vary between 4 percent and 8 percent. Carryforward length--The model required an assumption about the number of years that credit would be carried forward. (The Research Tax Credit stipulates that credit that cannot be claimed in the year in which it is earned may be carried forward for up to 20 years.) Lacking data on carryforward patterns, we based our assumption about the length of the carryforward period on behavior that was "observed" as part of the simulation. For example, in some cases we could simulate the taxpayer's carryforward status in both 2003 and 2004. If this taxpayer were observed to carry forward credit in both years as part of this simulation, it would have a longer carryforward period than if it were observed to carry forward credit in one year or the other, or if it were observed not to carry credit forward at all. In our sensitivity analysis, we allowed the longest carryforward period to vary between 2 and 10 years in length. The relationship between current and base QREs--We tested how our estimates for the ASC would differ if the spending histories for our panel corporations were significantly different from what we observed. To do this, we estimated what the MERs and discounted revenue costs would be if the ratio of each taxpayer's current QREs to base QREs were 10 percent higher and 10 percent lower than the observed amounts. Another aspect of our sensitivity analysis involved using of data from different stages in the taxpaying process. We used data from original returns, and from amended and audited returns, where applicable. [End of section] Appendix II: Data Relating to the Use of the Research Tax Credit by Corporations: Figure 4: Distribution of Claimants, Qualified Research Expenses, and Net Credits, by Size of Taxpayer, 2003 to 2005: [Refer to PDF for image: stacked vertical bar graph] Share of claimants: Year: 2003; Business receipts < $5 million: 3.1%; $5 million

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