Funding requests for IRS are organized by appropriation account, which aligns broadly with its strategic goals to (1) deliver high-quality and timely service to reduce taxpayer burden, and encourage voluntary compliance; and (2) effectively enforce the law to ensure compliance with tax responsibilities and combat fraud. IRS funds its IT investments from its Operations Support and Business Systems Modernization appropriation accounts. IRS's four appropriation accounts and the fiscal year 2016 appropriations are as follows: Enforcement ($4.86 billion): Funds activities such as determining and collecting owed taxes, providing legal and litigation support, and conducting criminal investigations. Operations Support ($3.75 billion): Funds activities including rent and facilities expenses, IRS-wide administration activities, and IT maintenance and security. Taxpayer Services ($2.33 billion): Funds taxpayer service activities and programs, including prefiling assistance and education, filing and account services, and taxpayer advocacy services. Business Systems Modernization ($290 million): Funds the planning and capital asset acquisition of IT to modernize IRS business systems. In support of the President's budget request, agencies submit CJs to Congress to explain the request by outlining agency goals and objectives for the coming fiscal year, and providing detailed descriptions of activities at the program, project, and activity level. Agencies are to prepare the justifications in accordance with the Office of Management and Budget's (OMB) Circular A-11 which provides guidance on materials required for the agency's request and reflects the needs of the Congress for providing effective oversight. Since 2014, IRS has undertaken a multiyear effort to develop a vision for the future state of tax administration to fulfill its mission more efficiently and effectively. To focus this effort, IRS narrowed 19 existing objectives to a core set of objectives that were used to develop six future state themes: 1. Facilitate voluntary compliance by empowering taxpayers with secure innovative tools and support. 2. Understand noncompliant taxpayer behavior and develop approaches to deter and change it. 3. Leverage and collaborate with external stakeholders. 4. Cultivate a well-equipped, diverse, skilled, and flexible workforce. 5. Select highest value work, using data analytics and a robust feedback loop. 6. Drive more agility, efficiency, and effectiveness in IRS operations. These future state themes are in addition to Treasury's department-wide focus on strengthening cybersecurity and eliminating identity theft. IRS reported that it adopted a new, more strategic approach to identify and select budget program priorities based on the future state themes. A user fee is charged to beneficiaries of certain goods or services provided by the federal government. In general, a user fee is related to a voluntary transaction or request for government goods or services above and beyond what is normally provided to the public. Although IRS services and operations are primarily funded through annual appropriations, IRS has the authority to supplement its appropriations with other resources, such as user fees. Until 1995, IRS user fee collections were deposited into the Treasury's general fund. In 1995, Congress granted IRS authority to retain and obligate up to $119 million in user fee revenue to supplement its annual appropriation. In 2005, Congress removed the limit of $119 million and IRS was permitted to retain and obligate user fees that were implemented after September 30, 1994, or the portion of the fee that has been increased since September 30, 1994, for those fees that existed prior to that date. For example, fees for installment agreements--monthly payment plans for taxes owed-- were established after September 30, 1994, and therefore IRS retains the full amount of the fee collected. However, the fee for enrolling as an actuary is divided between IRS and the general fund of the Treasury because this user fee existed prior to September 30, 1994. In fiscal year 2016, IRS expects to collect about $422 million in user fee revenue from sources such as installment agreements (about $155 million) and income verification express services (about $51 million). IRS deposits user fees that it is authorized to retain into its Miscellaneous Retained Fees Fund--an estimated $411 million in fiscal year 2016-- before transferring funds to an appropriation account to be obligated. For fiscal year 2016, planned user fee obligations ($509 million) account for about 4 percent of IRS's total obligations ($12,374 million). IRS's user fee funds are available until expended (no-year funds) and funds that are not obligated in the fiscal year in which they are collected are carried over to the next fiscal year. IT comprises a significant portion of IRS's budget and plays a critical role in enabling IRS to carry out its mission and responsibilities. IRS's fiscal year 2016 appropriations include about $2.5 billion for IT investments; this represents 20 percent of the total IRS budget. IRS relies on IT systems to process tax returns, account for tax revenues collected, send bills for taxes owed, issue refunds, assist in the selection of tax returns for audit, and provide telecommunications services for all business activities, including providing taxpayers with toll-free access to tax information, among other things. IRS's fiscal year 2016 appropriations increased by $290 million. IRS is required by law to allocate these funds across three areas: customer service representative level of service, cybersecurity, and identity theft prevention. IRS plans to use this funding to invest in (1) increased telephone level of service, including reduced wait times and improved performance on IRS's Taxpayer Protection Program/Identity Theft Toll Free Line; (2) cybersecurity, including network security improvements, protection from unauthorized access, and enhanced insider threat detection; and (3) identity theft refund fraud prevention. As shown in table 1, cybersecurity was allocated almost one-third of the funding, solely from the Operations Support appropriation account. This funding includes $7 million (50 additional full-time equivalents) to maintain the cybersecurity workforce. Cybersecurity efforts are intended to protect taxpayer information and IRS's systems, services, and data from internal and external cyber- related threats. Cybersecurity funding increased by 58 percent from fiscal years 2015 to 2016, primarily from increased appropriations as shown in figure 1. The President's fiscal year 2017 budget also requests cybersecurity funds provided through a Treasury Cybersecurity Enhancement Account, which is intended to bolster Treasury's overall cybersecurity posture. The request includes $62 million for IRS, including $54.7 million to directly support IRS cybersecurity efforts by securing data, improving continuous monitoring, and other initiatives. IRS's Senior Executive Team recognized that the 19 strategic objectives listed in the 2014-2017 IRS Strategic Plan were too broad a set of priorities for IRS future state vision. In January 2015, the Senior Executive Team agreed on six enterprise themes to support the future state vision that aligned with a subset of the strategic objectives and were informed by the needs of the business units. IRS modified its approach to prioritizing programs and initiatives for requested funding increases in fiscal year 2017. In January 2015, the Office of Planning, Programming and Audit Oversight asked the operating divisions to submit program increase proposals they believed necessary for IRS to achieve its priorities. This office reviewed the proposals to ensure they aligned with IRS's strategic plan and submitted them to the Senior Executive Team for consideration. The Senior Executive Team prioritized the proposed program increases through a voting process to ensure that they aligned with IRS's strategy and resource needs. According to IRS officials, funding increases were requested for fewer programs as a result of this new approach. Specifically, in the fiscal year 2017 CJ, increases were requested for 14 programs, whereas in the fiscal year 2016 CJ, increases in 25 programs were requested. In its fiscal year 2017 CJ, IRS explained how requests for increased funding were linked to appropriations accounts, but it did not provide this information for the amount requested to maintain current funding levels. IRS linked each requested program increase to a future state theme and included details on how much of the requested increase would be funded by each of the four appropriation accounts. Figure 2 shows each of the 14 program increase requests organized by theme or focus area, with funding requested broken out by appropriation account. Including data on the appropriation account provides additional transparency and improves the quality of the information available to Congress for budget deliberations. However, IRS did not provide data on how much it is currently spending in support of each theme. As a result, it is unclear what amount of funding would be required to maintain current levels by theme. According to officials, IRS is working to develop such data, but officials cited technical challenges with data availability and comparability as well as challenges identifying spending for specific themes, some of which are worded broadly. OMB Circular A-11 requires that an agency prepare justifications in concise, specific terms and cover all programs and activities of the agency. Additionally, the guidance specifies that an agency should consult with relevant congressional appropriations committees to confirm their support for modifications to the CJ's format. In adopting a new approach by prioritizing a subset of objectives, IRS modified how its budget data were organized, but did not clarify how spending by themes relates to appropriation accounts. Congressional appropriations' staff from both the majority and minority with whom we spoke told us they wanted more information on base spending by theme and account. Such information is important to ensure transparency on the current funding levels to assist Congress in making informed budget decisions. IRS has permanent, indefinite authority to obligate user fee collections. This authority allows the agency flexibility in the use of these funds. While IRS does not need congressional approval of its user fee spend plan, it must obtain approval from Treasury and OMB. Additionally, for fiscal year 2016, IRS was directed to wait 30 days following the submission of the user fee spend plan to Congress before obligating these funds. IRS's Chief Financial Officer has oversight responsibilities for the initial assessment, updates, collection, and review of user fees. While the Chief Financial Officer does not provide the services for which user fees are charged, the office is responsible for ensuring that user fees are appropriately collected, deposited, and reported. As seen in table 2, IRS plans to allocate $509 million of user fee revenues in fiscal year 2016 across three appropriation accounts. This represents 4 percent of IRS's total obligations in fiscal year 2016 ($12.37 billion). IRS allocates user fee revenues as part of its budget execution process and began planning for fiscal year 2016 allocations in April 2015. IRS allocates user fee revenue to fund agency priorities for which other funding was unavailable, but does not generally consider the source of funds when making these decisions. Budget officials briefed members of the Senior Executive Team and the IRS Commissioner multiple times between September 2015 and January 2016, including on preliminary estimates of user fee spending. According to IRS officials, IRS sends a draft of the user fee spend plan to Treasury within 30 days of its budget being enacted and finalizes the plan within 60 days. However, IRS began fiscal year 2016 operating under a continuing resolution until December, so the user fee spend plan was submitted to Congress in February 2016. In May 2016, IRS announced that it is revising a number of existing user fees to more closely match the cost of providing the service and implementing new user fees for some additional services as a result of its 2015 Biennial Fee Review. Agencies are required to review, on a biennial basis, the fees, royalties, rents, and other charges for services and things of value and make recommendations on revising those charges to reflect costs incurred. IRS expects total annual user fee revenue to increase by $128 million when the fees are fully implemented. Officials said they plan to continue their current policy regarding how user fee revenue is allocated. According to IRS officials, the planning process for allocating user fee revenue has been consistent between fiscal years 2011 and 2016. However, according to IRS officials, changes in appropriation levels and the cost of implementing mandates has resulted in a shift in how user fee revenue has been allocated. As shown in table 3 and the sidebar, both the amount and allocation of user fee funds shifted between fiscal years 2011 and 2016. As we reported in June 2015, IRS management decided to allocate more user fee funds to Operations Support in fiscal year 2015, in part because of changes in the amount appropriated to its accounts and the cost of implementing mandates, such as the Patient Protection and Affordable Care Act (PPACA), which is largely funded by user fee revenue and Operations Support funds. Of the $1.6 billion spent on PPACA implementation between fiscal years 2010 and 2015, $465 million was user fee revenue (29 percent) and $467 million was annually appropriated Operations Support funds (29 percent). The fiscal year 2015 appropriation for Operations Support was $161 million (4.2 percent) less than fiscal year 2014, while Taxpayer Services was not reduced during that time frame. In fiscal year 2015, IRS obligated $210 million in user fee revenue and $154 million from the Operations Support account for PPACA implementation. In addition to changes in the allocation of user fee funds across appropriation accounts, IRS has also changed the amount it retains and the amount it carries over to the next fiscal year. The amount of user fee revenue that IRS collected and retained increased from $324 million in fiscal year 2011 to $391 million in fiscal year 2015. As previously mentioned, IRS is implementing changes to user fees which it expects to generate an additional $128 million annually, all of which IRS is authorized to retain and spend. In fiscal year 2011, user fee obligations ($285 million) accounted for 2.2 percent of IRS's total obligations ($12,777 million). For fiscal year 2016, planned user fee obligations ($509 million) account for about 4 percent of IRS's total obligations ($12,374 million). Carryover Balances IRS can carry over any unexpended fee collections--those funds left over after IRS transfers fee collections to supplement its appropriations--for use in subsequent years. We have suggested that carryovers are one way agencies can establish reserves to sustain operations in the event of a sharp downturn in user fee collections or other events. See GAO-08-386SP for additional information on user fee design. These changes in the amount of funds that IRS retains and obligates have also affected the amount it carries over from one fiscal year to the next. As seen in table 4, IRS's carryover balance has declined in recent years from about $327 million at the end of fiscal year 2011 to about $93 million planned for the end of fiscal year 2016. This is potentially significant because, as we have previously reported, carryover balances can help agencies to sustain operations in the event of a sharp downturn in user fee collections or other events (see sidebar). However, this is less of consideration for programs that could also be funded through annual appropriations, as is the case with IRS. In briefings to the Senior Executive Team and to the IRS Commissioner, officials identified the low carryover balance from fiscal year 2016 to 2017 as a key risk because it decreases the funds available for future fiscal years. As part of budget deliberations, officials considered the tradeoffs between spending funds on priorities in the current budget year and maintaining a reserve for future years. IT is a significant portion--about 21 percent--of the total IRS budget request for fiscal year 2017. The President requested $2.8 billion for IRS's IT investments in fiscal year 2017, an increase of about 15 percent. This includes a $391 million (65 percent) increase for non-major IT investments and a $33 million (2 percent) decrease for major IT investments as shown in figure 3. IT investments are funded through the Operations Support and the Business Systems Modernization appropriation accounts and user fees. These investments generally support (1) day-to-day operations (which include operations and maintenance, as well as development, modernization, and enhancements to existing systems); and (2) modernization efforts in support of IRS's goals. For IRS's 23 major IT investments, the amount requested for fiscal year 2017 is $1.8 billion, which is funded primarily through the Operations Support appropriation account as shown in figure 4. In previous years, IRS reported data on its IT investments in the CJ in a Summary of Capital Investments and Portfolio of Major Investments. The Summary of Capital Investments listed major and non-major IT investment totals and major IT investments by funding source. The Portfolio of Major Investments included a comprehensive list and description of major IT investments. For fiscal year 2017, IRS moved the Summary of Capital Investments from the CJ to a link on Treasury's website that was accessible 30 days following the release of the President's budget. This website also includes a Capital Investment Plan, similar to the Portfolio of Major Investments. Treasury provides capital investment information on its website for each Treasury bureau. Treasury is required to submit a Capital Investment Plan to Congress no later than 30 days following the submission of the President's budget. According to IRS and Treasury officials, Treasury asked IRS to move the capital investment information from the CJ to a separate website to give Treasury additional time to review the data to improve reliability. According to IRS officials, this approach also eliminated the possibility of administrative errors in transcribing data from one database to another. While the move delayed the availability of the IRS information, the timing was consistent with capital investment reporting by other Treasury bureaus. In the fiscal year 2017 IRS Summary of Capital Investments, Treasury reported the non-major IT investment total inaccurately for the 3 fiscal years presented (fiscal years 2015 actual, 2016 enacted, and 2017 requested). Treasury underreported the amounts by about $4 million (less than 1 percent) in each fiscal year. Consequently, Treasury also reported the IT total for major and non-major IT investments inaccurately. According to IRS and Treasury officials, this discrepancy was the result of an error introduced during the 30-day Treasury review process. IRS enters IT investment information into Treasury's SharePoint Investment Knowledge Exchange (SPIKE) system. IRS and Treasury review and monitor the information before the Capital Investment Plan and the Summary of Capital Investments reports are generated. According to IRS officials, for fiscal year 2017, Treasury took a more active role in reviewing the information submitted by IRS on IT investments. During the review process, manual adjustments in SPIKE caused an error that resulted in two rows of non-major IT investments being excluded from the non-major IT total. We asked IRS about the discrepancy, and IRS approached Treasury with the issue and Treasury subsequently corrected the error in SPIKE and revised the Summary of Capital Investments on Treasury's website. Stronger internal controls could help prevent such mistakes, such as effective monitoring of Treasury-generated IRS information technology investment reports. According to federal internal control standards, ongoing monitoring should occur in the course of normal operations. Monitoring should be performed continually and be ingrained in the agency's operations. It includes regular management and supervisory activities, comparisons, reconciliations, and other actions people take in performing their duties. According to Treasury officials, Treasury is aware of the need to reduce manual corrections by making improvements to SPIKE, but has yet to take steps to fully ensure that such errors will not occur in future budget cycles. In June 2015, we reported on a separate ongoing monitoring internal control issue which resulted in IRS providing inaccurate data on actual obligations to date for major IT investments in its fiscal year 2016 CJ. As a result of our recommendation that IRS implement internal controls to ensure the accuracy of information on major IT investments reported in the annual CJ, IRS took additional steps when preparing the fiscal year 2017 CJ. This included performing an operational review to examine the existing procedures. In addition, for the fiscal year 2017 IT investment reports, IRS implemented processes to ensure accurate and reliable data such as comparing its IT data maintained on control charts to the data it enters in SPIKE. IRS performed this reconciliation individually for each IT investment. However, IRS reported that it did not review the Summary of Capital Investments generated by Treasury in its entirety for accuracy after it was generated from SPIKE. Without effectively monitoring IT investment information, Treasury risks continued errors in the information it reports on its IT investments. Such errors could negatively affect Congress's ability to obtain accurate information on IT investments needed to inform future budget decisions and oversight. IRS intended to improve its budget process by aligning its spending priorities with themes supporting its future state vision, but the effort remains a work in progress. For fiscal year 2017, IRS did not make clear how spending by themes relates to appropriation accounts and how this advances IRS's priorities; this linkage is important to the clarity and transparency of IRS's budget presentation. Appropriations staff told us this information would help them make informed budget and oversight decisions. While IRS faces data challenges that may limit its ability to fully link funding requests to appropriation accounts, providing these linkages to the extent feasible will improve transparency and provide Congress with information to assist in making informed decisions. Additionally, accurate and timely budget data are key to effective congressional oversight. Since IT is such a significant portion--about 21 percent--of the total budget request for IRS, it is particularly important to have robust controls in place to ensure the data's accuracy. To enhance the budget process and to improve transparency, we recommend that the Commissioner of Internal Revenue, to the extent feasible, ensure that the CJ includes data by appropriation account on the amount of funding requested to maintain current services for each future state theme. As Treasury works with IRS to improve the quality and accuracy of budget data, we recommend that the Secretary of the Treasury ensure sufficient controls are in place to make certain that the information technology investment reports generated from SPIKE are accurate. This includes, for example, taking steps to reduce the need for manual corrections to the data. We provided a draft of this report to the Commissioner of Internal Revenue and the Secretary of the Treasury for comment. In written comments reproduced in Appendix IV, IRS agreed with the recommendation related to the presentation of data in the Congressional Justification. IRS plans to provide a robust description of planed activities and outcomes for funding requested to maintain current services. Given IRS's emphasis on the future state, budget data on the amount requested to maintain current services for each theme is particularly valuable. In a separate email response, Treasury agreed with the recommendation related to information technology internal controls. Treasury noted that it plans to implement improvements to SPIKE in the next few months that would address our recommendation by avoiding the need for manual corrections moving forward. IRS and Treasury also provided technical comments which were incorporated as appropriate. We are sending copies of this report to the Chairman and Ranking Members of other Senate and House committees and subcommittees that have appropriation, authorization, and oversight responsibilities for IRS. We are also sending copies to the Commissioner of Internal Revenue, the Secretary of the Treasury, and other interested parties. In addition, the report is available at no charge on the GAO website at http://www.gao.gov. If you or your staff have any questions about this report, please contact me at (202) 512-9110 or mctiguej@gao.gov. Contact points for our Offices of Congressional Relations and Public Affairs may be found on the last page of this report. GAO staff who made key contributions to this report are listed in appendix V. In the fiscal year 2017 Capital Investment Plan, the Internal Revenue Service (IRS) did not report life-cycle costs of its major information technology (IT) investments since most investments were considered ongoing with an undetermined useful life. Instead, IRS provided total anticipated outlays for the investments through fiscal year 2021. Recommendations Develop a quantitative measure of scope At a minimum, develop a quantitative measure of scope for its major information technology (IT) investments, in order to have complete information on the performance of these investments. Benefit A quantitative measure of scope is a good practice as it provides an objective measure of whether an investment delivered the functionality that was paid for. Status The Internal Revenue Service's (IRS) position on this recommendation has changed over time. IRS agreed with the recommendation we made in June 2012, but stated it had other methods in place to document delivered functionality of a project throughout the life- cycle. However, these methods did not provide a quantitative measure of performance. In responding to a related report we issued in April 2014, IRS maintained its position and therefore did not take action to address the recommendation. In the December 2015 quarterly report on information technology to Congress, however, IRS proposed a solution for one investment: specifically, it listed specific "scope elements" for the Return Review Program investment and identified the elements it had implemented to date. In addition, during our recent review of IRS's major IT investments, we found that IRS had developed a quantitative measure of scope for two investments, although we noted that the measure could be improved by accounting for the work performed by IRS staff in accordance with best practices (GAO-16-545). The measure used in the quarterly report to Congress and the one we noted during our June 2016 review are positive steps. Similar, continued efforts by IRS would help fully address our recommendation to develop a quantitative measure of scope for all major IT investments. Developing a cost estimate that meets additional best practices, will foster accountability, improve insight, and provide objective information. capture actual costs and use them as a basis for future updates. Explain why variances occurred between the current estimate and previous estimates. IRS agreed with all of the actions recommended, except using earned value management and validating the PPACA cost estimate by preparing a second, independent cost estimate, in part because of cost and burden. In February 2015, IRS released version 3 of the PPACA cost estimate, which reflects best practices to a greater extent. However, four elements of this recommendation remain open. IRS improved the variance from the prior estimate, but IRS has not improved its practices related to the use of earned value management, risk and uncertainty analysis, or validating the estimate. IRS released version 4 of the cost estimate in April 2016 and we will continue to monitor IRS's progress. with best practices, and develop and document plans to address risks. Validate the original cost estimate by preparing a second, independent cost estimate. Develop a long-term strategy Develop a long-term strategy to address operations amidst an uncertain budget environment. As part of the strategy, IRS should take steps to improve its efficiency, including Reexamine programs, related processes, and organizational structures to determine whether they are effectively and efficiently achieving IRS's mission. Streamline or consolidate management or operational processes and functions to make them more cost effective. Developing a long-term strategy will enhance budget planning and improve decision making and accountability. IRS agreed with our recommendation and is taking steps to implement it. IRS has adopted a new, more strategic, approach to identify and select budget program priorities based on future state themes for the fiscal year 2017 budget request. As part of its planning process, IRS prioritized a subset of 5 objectives for action as part of the 19 objectives identified in the IRS 2014-2017 Strategic Plan. Operating division officials submitted requests for resources that they thought were necessary to achieve the five priority objectives, and they identified initiatives that were the highest priority to IRS. To guide IRS toward the future state concept and assess progress along the way, IRS has identified enterprise goals, but as of May 2016, these goals were still under development. Enhance calculation and use of actual return on investment (ROI) data Calculate actual ROI for implemented initiatives, compare the actual ROI to projected ROI, and provide the comparison to budget decision makers for initiatives where IRS allocated resources. Use actual ROI calculations as part of resource allocation decisions. Enhanced calculation of ROI provides greater insight on the productivity of a program and can inform decision making. Status allocation decisions within the correspondence exam program. IRS plans to use these estimates to inform future examination plans as we recommended in June 2014, but considerable work remains in this long-term effort. In July 2015, IRS officials reported there is no timeline for full implementation. In June 2016, IRS officials confirmed that projected revenue will be considered in investment decision making as part of fiscal year 2018 enterprise planning guidance, but did not report any progress in using actual ROI data. In addition to the individual named above, the following staff made key contributions to this report: Thomas Gilbert, Assistant Director; Melissa King, Analyst-in-Charge; Charles Fox; Robert Gebhart; Carol Henn; Laurie King; Edward Nannenhorn; Sabine Paul; Bradley Roach; Robert Robinson; Cynthia M. Saunders; Andrew J. Stephens; and Elwood White.

Summary:
Funding the federal government depends largely upon IRS's ability to collect taxes, including providing taxpayer services that make voluntary compliance easier and enforcing tax laws to ensure compliance with tax responsibilities. For fiscal year 2017, the President requested $12.3 billion in appropriations for IRS; the request is almost $1 billion (9 percent) more than IRS's fiscal year 2016 appropriation. Because of the size of IRS's budget and the importance of its service and compliance programs for all taxpayers, GAO was asked to review the fiscal year 2017 budget request for IRS. In March 2016, GAO reported interim information on IRS's budget. This report assesses (1) the extent to which IRS's fiscal year 2017 CJ presents data on requested funding levels by appropriation accounts and in alignment with agency priorities, (2) IRS's management and allocation of user fees, and (3) the costs and reporting of IRS's IT investments. GAO reviewed the fiscal year 2017 CJ, documentation on IRS's vision for the future state, IRS budget plans, IT investment reports, and IRS budget data for fiscal years 2011 to 2017, interviewed IRS officials, and met with congressional appropriations staff to discuss the information they want included in the CJ. Congressional justification data . The Internal Revenue Service (IRS) has taken steps to manage its budget more strategically but did not make linkages between priorities and appropriations accounts. IRS prioritized a subset of its 19 strategic objectives for action and established six themes that represent its "future state" vision for tax administration. In the fiscal year 2017 congressional justification (CJ), IRS linked requests for increased funding to themes and included details on how much would be funded by each appropriation account. However, IRS did not provide data on how much it spends in support of each theme or the amount of funding needed to maintain current levels by theme. IRS is working to develop such data, but officials cited challenges with data availability and tracking spending by themes. Such information would provide transparency on the current funding levels which assist Congress in making informed budget decisions. User fee spending . IRS has permanent, indefinite authority to obligate and spend user fee collections, which it obligates as part of its budget execution process. IRS's user fee spend plan must be approved by both the Department of the Treasury (Treasury) and the Office of Management and Budget. IRS was directed to wait 30 days following the submission of the user fee spend plan to Congress before obligating funds. As seen in the table, planned user fee spending increased more than $220 million (79 percent) between fiscal years 2011 and 2016. Of the $509 million planned user fee obligations in fiscal year 2016, the largest amounts are for the Patient Protection and Affordable Care Act ($204 million) and the Foreign Account Tax Compliance Act ($62 million). Information technology data . The President's budget requested $2.8 billion for IRS's information technology (IT) investments which accounted for 21 percent of IRS's budget request for fiscal year 2017. Instead of presenting its IT investment data in its CJ, IRS moved them to a Treasury website. This is consistent with other Treasury bureaus and was intended to provide time for an enhanced data review process. However, despite the review process, Treasury did not detect an error which resulted in IRS underreporting its total IT investments by about $4 million. According to federal internal control standards, ongoing monitoring should occur in the course of normal operations. Data errors could negatively affect Congress's ability to make budget decisions and provide oversight. GAO recommends that IRS ensure the CJ includes data on the amount of funding requested to maintain current services for each future state theme, and that Treasury ensure the accuracy of Treasury-generated IRS IT investment reports. IRS and Treasury agreed with the recommendations.