End Notes
[1] Chuck Marr, Samantha Jacoby, and Jabari Cook, “Success of the IRS Rebuilding and Tax Gap Reduction Effort Depends on Sufficient Funding Through Annual Appropriations,” CBPP, December 7, 2022, https://www.cbpp.org/research/federal-tax/success-of-the-irs-rebuilding-and-tax-gap-reduction-effort-depends-on.
[2] Josephine Cureton, “On Tax Day, Reject DOGE-Led Cuts to the IRS Workforce and Budget,” CBPP, April 10, 2025, https://www.cbpp.org/blog/on-tax-day-reject-doge-led-cuts-to-the-irs-workforce-and-budget.
[3] IRS, “Fiscal Year 2026 Congressional Budget Justification & Annual Performance Report and Plan,” Table 1.2, https://www.irs.gov/pub/irs-pdf/p4450.pdf#page=7.
[4] Taxpayer Advocate Service, “National Taxpayer Advocate Annual Report to Congress: 2025,” January 26, 2026, https://www.taxpayeradvocate.irs.gov/reports/2025-annual-report-to-congress/full-report/.
[5] TIGTA, “The Internal Revenue Service’s Readiness for the 2026 Filing Season,” January 26, 2026, https://www.oversight.gov/sites/default/files/documents/reports/2026-01/2026400002_Readiness%20Memo_Final.pdf.
[6] Erin Shilling and Erin Slowey, “Backlogs, Job Holes Plague IRS in Tax Season After DOGE Cuts,” Bloomberg Tax, March 30, 2026, https://news.bloombergtax.com/daily-tax-report/backlogs-job-holes-plague-irs-in-tax-season-after-doge-cuts; TIGTA, “The Internal Revenue Service’s Readiness for the 2026 Filing Season,” January 26, 2026, https://www.oversight.gov/sites/default/files/documents/reports/2026-01/2026400002_Readiness%20Memo_Final.pdf.
[7] TIGTA, “The IRS Has Made Limited Progress Achieving Paperless Processing,” February 6, 2026, https://www.tigta.gov/sites/default/files/reports/2026-02/2026408003fr.pdf.
[8] Danny Nguyen, “IRS Suffering Filing-Season Shortfall After Layoffs, Watchdog Report Says,” Politico Pro, April 6, 2026, https://subscriber.politicopro.com/article/2026/04/irs-falls-short-of-filing-season-staffing-goals-report-says-00860634.
[9] Eric Katz, “‘Setting this agency up for failure’: Amid staffing crunch, IRS taps employees with no relevant experience to assist during filing season,” Government Executive, February 4, 2026, https://www.govexec.com/management/2026/02/setting-agency-failure-amid-staffing-crunch-irs-taps-employees-no-relevant-experience-assist-during-filing-season/411192/.
[10] Shilling and Slowey, op. cit.
[11] TIGTA, “The Internal Revenue Service’s Readiness for the 2026 Filing Season,” January 26, 2026, https://www.oversight.gov/sites/default/files/documents/reports/2026-01/2026400002_Readiness%20Memo_Final.pdf.
[12] Shilling and Slowey, op. cit.
[13] Michael Cooper et al., “Business in the United States: Who Owns It, and How Much Tax Do They Pay?” Tax Policy and the Economy, Vol. 30, June 2016, https://www.nber.org/books-and-chapters/tax-policy-and-economy-volume-30/business-united-states-who-owns-it-and-how-much-tax-do-they-pay.
[14] Government Accountability Office (GAO), “IRS Audit Processes Can Be Strengthened to Address a Growing Number of Large, Complex Partnerships,” July 2023, https://www.gao.gov/assets/gao-23-106020.pdf.
[15] Ibid.; Edward G. Fox, Zachary Liscow, and Michael Love, “The Case for Corporate Tax: Two Trends Make Pass-Through Taxation Harder to Defend,” Tax Policy Center, February 10, 2026, https://taxpolicycenter.org/taxvox/case-corporate-tax-two-trends-make-pass-through-taxation-harder-defend.
[16] Jesse Drucker, “Push to Audit Private Equity and Venture Capital Falters Under Trump,” New York Times, January 8, 2026, https://www.nytimes.com/2026/01/08/business/irs-private-equity-venture-capital-audits.html.
[17] IRS, “IRS Direct File: Filing Season 2025 Report,” May 13, 2025, https://taxpayer-rights.org/wp-content/uploads/2025/06/2025-14762.pdf.
[18] GAO, “IRS Successfully Piloted Online Tax Filing but Opportunities Exist to Expand Access,” December 2024, https://www.gao.gov/assets/gao-25-106933.pdf.
[19] TIGTA, “Inflation Reduction Act: Results of the Direct File Pilot,” March 20, 2025, https://www.tigta.gov/sites/default/files/reports/2025-08/2025408015fr.pdf.
[20] Justin Elliott and Paul Kiel, “Inside TurboTax’s 20-Year Fight to Stop Americans from Filing Their Taxes for Free,” ProPublica, October 17, 2019, https://www.propublica.org/article/inside-turbotax-20-year-fight-to-stop-americans-from-filing-their-taxes-for-free.
[21] Joe Hernandez, “The FTC Bars TurboTax Maker Intuit from Advertising ‘Deceptive’ Free Services,” NPR, January 23, 2024, https://www.npr.org/2024/01/23/1226291903/turbotax-intuit-ftc-free-services.
[22] Taxpayer Advocate Service, “National Taxpayer Advocate 2025 Purple Book,” Legislative Recommendation #4, December 31, 2024, https://www.taxpayeradvocate.irs.gov/wp-content/uploads/2024/12/ARC24_PurpleBook_02_ImproveFiling_4.pdf.
[23] John Wancheck, “IRS Needs Authority to Regulate Tax Return Preparers,” CBPP, May 5, 2021, https://www.cbpp.org/blog/irs-needs-authority-to-regulate-tax-return-preparers.
[24] Emily Badger, Alicia Parlapiano, and Margot Sanger-Katz, “Trump’s Big Bill Would Be More Regressive Than Any Major Law in Decades,” New York Times, June 12, 2025, https://www.nytimes.com/interactive/2025/06/12/upshot/gop-megabill-distribution-poor-rich.html.
[25] The bottom 60 percent of households will see an increase in after-tax income of 1.5 percent ($610), on average, in 2027 as a result of the tax cuts, compared to a 4.9 percent ($73,850) increase for those in the top 1 percent.
[26] Joint Committee on Taxation (JCT), JCX-35-25, July 1, 2025, https://www.jct.gov/publications/2025/jcx-35-25/.
[27] Samantha Jacoby , Chuck Marr, and Kris Cox, “Republican Megabill Tax Provisions Are Skewed to the Rich, Fail to Deliver for Families, and Are Fiscally Irresponsible,” CBPP, December 17, 2025, https://www.cbpp.org/research/federal-tax/republican-megabill-tax-provisions-are-skewed-to-the-rich-fail-to-deliver-for.
[28] Brendan Duke, “Republican Megabill Trades Essential Support to Low-Income People for Skewed Tax Cuts,” CBPP, updated February 11, 2026, https://www.cbpp.org/research/federal-tax/republican-megabill-trades-essential-support-to-low-income-people-for-skewed.
[29] Jennifer Sullivan, “People Who Rely on the ACA Marketplaces Face Mounting Affordability Challenges,” CBPP, February 5, 2026, https://www.cbpp.org/blog/people-who-rely-on-the-aca-marketplaces-face-mounting-affordability-challenges.
[30] JCT, JCX-31-25, June 28, 2025, https://www.jct.gov/publications/2025/jcx-31-25/.
[31] Congressional Budget Office, “Effects on Deficits and the Debt of Public Law 119-21 and of Making Certain Tax Policies in the Act Permanent,” August 4, 2025, https://www.cbo.gov/system/files/2025-08/61466-DebtService.pdf.
[32] Tax Policy Center, “Preliminary Estimates of Tax Benefits of Deductions for Tips and Overtime,” July 31, 2025, https://taxpolicycenter.org/tax-model-analysis/preliminary-estimates-tax-benefits-deductions-tips-and-overtime. For data, see the accompanying tables T25-0244 and T25-0246.
[33] Ernie Tedeschi, “The ‘No Tax on Tips Act’: Background on Tipped Workers,” Budget Lab at Yale, June 24, 2024, https://budgetlab.yale.edu/news/240624/no-tax-tips-act-background-tipped-workers.
[34] Danilo Trisi, “After-Tax Income Gaps Are Large Already; Megabill Will Redistribute Upwards, CBO Projects,” CBPP, September 11, 2025, https://www.cbpp.org/blog/analyzing-the-census-bureaus-2024-poverty-income-and-health-insurance-data?entry_uuid=c60d635e-4a7c-4c3b-88bf-4e1afde4c14a#entry.