The Treasury Inspector General for Tax Administration
Summary
TIGTA is the IRS's own watchdog, funded at $172.5 million and 634 people in FY2025 -- about $1.06 for every individual tax return the IRS processed that year -- and its own accounting puts its 25-year average return at $102 for every dollar spent on it.
What is this organization?
What does it do?
In the six months from October 2025 through March 2026, 's Office of Audit and Office of Inspections and Evaluations issued 17 reports⧉ on programs, while its Office of Investigations closed 881 complaints and allegations⧉ and opened 462 new full investigations⧉ into employees, contractors, and outsiders who target the agency. That casework produced 62 indictments⧉ and, combined with audit and inspection findings, $722.1 million in financial accomplishments⧉ -- funds and property recovered, assets protected against loss, and court-ordered fines and restitution.
What does it cost to run — money and people?
Congress enacted $172.5 million and 634 full-time staff for TIGTA in fiscal year 2025⧉, split between $63.0 million and 287 FTE for audits and $109.5 million and 347 FTE for investigations⧉. Signed into law in February 2026⧉, 's FY2026 appropriation fell to $165 million⧉, a roughly 4 percent cut. Measured against the 162.8 million individual income tax returns the IRS processed in FY2025⧉, 's FY2025 budget works out to about $1.06 per return filed.
View data as table
| Investigations | 109,514 | 347 FTE |
|---|---|---|
| Audits | 62,994 | 287 FTE |
Why is it good for society?
's own accounting puts its 25-year average return at $102 in benefits for every dollar spent on the office⧉. The mechanism is concrete: 's Office of Investigations identified a fraud scheme that, without its intervention, would have paid out roughly $3.5 billion in improper tax credits⧉, and recovered more than $1 billion in Treasury checks stolen and resold on the dark web⧉ -- money that would otherwise have left the tax system with no dedicated watchdog to notice.
- 's FY2025 budget works out to about $1.06 per individual tax return the processed that year -- a fraction of the $102 in benefits says it delivers per dollar spent on it, averaged over its 25-year history.
- Congress cut 's enacted appropriation by about 4 percent for FY2026, from $172.5 million to $165 million, even as its Office of Investigations alone reported $722 million in financial accomplishments in just the first half of the fiscal year.
Your handles.* Report employee misconduct or fraud, waste, and abuse in programs through 's online complaint form or its toll-free hotline, 1-800-366-4484 -- both accept anonymous and confidential tips. 's own budget is set each year through the Financial Services and General Government appropriations bill, worked by the House and Senate Appropriations Committees.
Sources(5) ▾
- U.S. Department of the Treasury, Treasury Inspector General for Tax Administration, FY 2026 Congressional Budget Justification (2025-06-01) — 's own budget submission to Congress -- gives the FY2025 enacted budget authority and (Table 1.1), the FY2026 President's budget request, the mission statement, 's stated 25-year average return on investment, and the Acting Inspector General's account of specific investigative accomplishments (a $3.5B fraud scheme stopped, over $1B in stolen Treasury checks recovered). home.treasury.gov · original document
- Treasury Inspector General for Tax Administration, Semiannual Report to Congress, October 1, 2025 - March 31, 2026 (2026-05-01) — 's statutorily required semiannual report to Congress, the most current published workload accounting -- source for this entry's 'what does it do' figures (reports issued, investigations opened/closed, financial accomplishments, indictments) covering the six months ending March 31, 2026, plus 's statutory mandate and organizational structure. tigta.gov · original document
- U.S. Government Publishing Office (GovInfo), Consolidated Appropriations Act, 2026 (Public Law 119-75) (2026-02-03) — The enacted public law text (signed February 3, 2026) containing the Financial Services and General Government Appropriations Act, 2026 -- source for 's actual enacted FY2026 'Salaries and Expenses' appropriation, $165,000,000, as opposed to the FY2026 President's budget request figure. govinfo.gov · original document
- Internal Revenue Service, Internal Revenue Service Data Book, 2025 (Publication 55-B) (2026-06-01) — The 's own annual statistical compendium -- source for the individual income tax return count (FY2025) used as this entry's per-taxpayer cost denominator, per better_metrics.md's sourced-denominator discipline. irs.gov · original document
- Treasury Inspector General for Tax Administration, About TIGTA (2026-01-01) — 's own identity page -- source for its January 1999 establishment date, its enabling statute, and its organizational placement inside Treasury while functioning independently. tigta.gov · original document
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was established in January 1999 by the IRS Restructuring and Reform Act of 1998⧉, which also amended the Inspector General Act of 1978 to give the statutory authority to carry firearms, execute search and arrest warrants, and make arrests⧉ in the course of its work. sits organizationally inside the Treasury Department and reports to the Treasury Secretary and to Congress, but functions independently of every other Treasury office or bureau⧉ -- it is the watchdog assigned specifically to the agency that collects the nation's taxes, the Internal Revenue Service.