Federal Workers Owe $6.3 Billion in Taxes: 2026 TIGTA Agency Breakdown

Last Updated: May 13, 2026 Reading Time: 11 min

Federal employees and retirees owe $6.3 billion in unpaid taxes, according to TIGTA Report 20263S0023 released May 6, 2026. That's 571,000 current and retired federal workers, a 43% increase in the delinquent population since FY 2021. The current civilian employee delinquency rate climbed from 4.9% to 6.9% over the same period, while the federal workforce itself shrank by less than 1%.

This guide breaks down which agencies are worst (USPS leads), what the IRS can take from your paycheck and TSP, whether you can be fired for owing taxes (mostly no, but Schedule F changes the answer), and the FedTools original Agency Tax Delinquency Index that lets you rank agencies regardless of size.

Key Takeaways

• 571,000+ federal employees and retirees owe $6.3 billion in unpaid taxes per TIGTA Report 20263S0023 (May 6, 2026)
• Current civilian employee delinquency rate: 6.9% in FY 2024, up from 4.9% in FY 2021
• USPS is the worst offender: ~10% delinquency rate, 27% of total dollars owed, the most repeat nonfilers
• The "Big Five" (USPS, VA, Navy, Army, DHS) hold 59.3% of the workforce but 64% of unpaid taxes
• Treasury has the lowest rate at 2.4%, well below the 6.9% federal average
• IRS can levy 15% of your salary continuously plus your entire TSP balance in a lump sum
• You generally cannot be fired for tax debt (non-IRS employees), but OPM's 2025 proposed suitability rule and Schedule Policy/Career classification both change that calculus
• 50,000 current civilian employees failed to file in multiple years; 122 referred to Criminal Investigation

The TIGTA 2026 Audit in 90 Seconds

TIGTA Report 20263S0023 ("Federal Employee and Retiree Trends Show Increased Tax Noncompliance") was released by the Treasury Inspector General for Tax Administration on May 6, 2026. The audit covered FY 2021 through FY 2024 data from the IRS Federal Employee/Retiree Delinquency Initiative (FERDI).

The headline numbers:

Metric	FY 2021	FY 2024	Change
Total balance owed (employees + retirees)	$4.8B	$6.3B	+32%
Delinquent civilian employees	149,000	215,000	+44%
Delinquency rate (current civilians)	4.9%	6.9%	+43% relative
Federal workforce size	~3.13M	~3.10M	-1%

The story isn't the level, it's the trend. Federal employees are still more tax-compliant than the general U.S. population (~15% noncompliance rate per IRS Tax Year 2022 projections). But the federal delinquency rate climbed 43% in 3 years while the workforce itself shrank. That divergence is what made the audit news.

TIGTA's explanation: COVID-era enforcement pauses let balances accumulate. The IRS stopped proactive FERDI outreach for about 2 years; when enforcement restarted, the backlog had ballooned.

Agency Tax Delinquency Index (FedTools Original Data)

No competitor has published an agency-by-agency rate normalized for workforce size. FedTools' Delinquency Index (delinquency rate × 10, expressed as employees per 1,000 workforce) lets you rank agencies regardless of total headcount.

Agency	Workforce	Est. Delinquent	Rate	Dollars Owed	Delinquency Index
U.S. Postal Service	~600,000	~60,000	~10%	~$1.7B	100
Dept. of Veterans Affairs	~400,000	~29,000	7.3%	~$380M	73
Navy (civilian)	~200,000	~14,000-16,000	~7-8%	Not published	70-80
Army (civilian)	~250,000	~17,500	~7%	Not published	70
Dept. of Homeland Security	~230,000	~11,500	~5%	Not published	50
IRS (employees)	~85,000	~3,414	~4%	~$21M	40
Treasury Dept. (overall)	~100,000	~2,400	2.4%	Not published	24
Federal civilian avg.	~3.1M	~215,000	6.9%	$2.1B	69
All (incl. retirees)	n/a	571,000+	n/a	$6.3B	n/a

FedTools 2026 analysis of TIGTA Report 20263S0023. Delinquency Index = agency delinquency rate × 10, enabling size-normalized comparison across agencies.

USPS is far and away the worst. With ~600,000 employees and a ~10% delinquency rate, USPS accounts for 20% of the delinquent population but 27% of the dollars owed. USPS also has the highest concentration of repeat nonfilers across any federal agency in the TIGTA data.

The "Big Five" pattern: USPS, VA, Navy, Army, DHS together hold 59.3% of the civilian federal workforce but 64% of the total unpaid balance. The overrepresentation is driven by USPS's outsized rate.

Treasury's low rate is structural. Treasury employees can be cross-referenced against tax data internally, and the IRS Restructuring and Reform Act creates a higher bar for Treasury-family employees specifically. 2.4% is roughly 1/4 the rate at USPS.

What the IRS Can Levy from You

The Federal Payment Levy Program (FPLP) gives the IRS automated levy authority against federal payments. Here's what's exposed:

Asset	Can IRS Levy?	Maximum Levy	Authority
Federal salary (active employees)	Yes	15% continuous	FPLP
OPM retirement annuity (FERS/CSRS)	Yes	15% continuous	FPLP
Social Security benefits	Yes	15% continuous	FPLP
TSP account balance	Yes	Entire balance, lump sum	IRC § 6331, Form 668-R
Survivor annuity payments	No	N/A	Excluded from FPLP
Active duty military pay	No	N/A	Excluded from FPLP
Disability retirement payments	No	N/A	Excluded from FPLP
Medal of Honor pension	No	N/A	Excluded from FPLP

The TSP exposure is the one most federal employees don't expect. Unlike the 15% FPLP cap on salary and annuity, the IRS can levy your entire TSP balance in a single lump sum by serving Form 668-R directly to the Federal Retirement Thrift Investment Board. FRTIB must notify you, then withdraw funds.

If you're under age 59.5, the levy triggers a 10% early withdrawal penalty on top of the regular income tax on the distribution. A $100,000 TSP balance levied to satisfy a $40,000 tax debt could net you a $14,000+ additional federal tax bill on the levied amount alone, plus state taxes.

The IRS can also levy survivor benefits in some cases, despite the FPLP exclusion. Spousal survivor annuity payments not derived from federal employment are not excluded.

How FERDI Works: The Pipeline No One Tells You About

The Federal Employee/Retiree Delinquency Initiative (IRM 5.19.18) is the IRS collection program targeting federal workers specifically. Federal employees do not get treated like regular delinquent taxpayers. They get an accelerated, automated pipeline.

Step 1: Identification. The IRS matches its Individual Master File against OPM's Central Personnel Data File, DoD's Defense Manpower Data Center records, and USPS employment files. When a match is found, TC 016 transaction posts a FERDI indicator on the employee's account.

Step 2: FPLP Levy Trigger. Matched employees enter F1 inventory for FPLP analysis. The IRS can apply the continuous 15% levy automatically, no court order required, after the initial Collection Due Process notice.

Step 3: LT36 Notice (2025 Addition). Starting June 2025, the IRS added LT36 ("Federal Employee/Retiree Delinquency Notice") as an early-warning letter before levy action. Results to date:

• 427,000 LT36 notices sent
• 59,000 payments made
• 4,700 accounts fully resolved
• $58 million collected in the first 6 months

That's about a 14% payment response rate but only a 1.1% full-resolution rate. The LT36 doesn't replace the FPLP, it precedes it.

Step 4: Collection stages F2 through F7. Cases progress through automated monitoring (F2-F3) to manual revenue officer intervention (F4-F6) to pre-closure or tax lien filing (F7).

Special handling for IRS employees: IRS employee cases bypass normal stages and go directly to Revenue Officer assignment. Only officers specifically authorized to work IRS employee accounts handle these cases.

Can a Federal Employee Be Fired for Tax Delinquency?

This is the question the news coverage usually skips. The answer is more complicated than yes or no.

For most federal employees (non-IRS): generally no

Under current law (5 USC Chapter 75), tax delinquency alone is not statutory cause for removal. The civil service system protects employees from removal without "cause," and paying taxes late, or even not at all, is not listed as statutory cause. The IRS can garnish your paycheck. The agency itself cannot fire you solely for owing taxes.

For IRS employees: yes, by statute

Section 1203 of the IRS Restructuring and Reform Act of 1998 (26 USC § 1203) lists "willful failure to file a federal tax return" and "understatement of federal tax liability" among the "10 deadly sins" that require termination. The IRS Commissioner retains discretion to mitigate, but the legal mandate exists. This applies ONLY to IRS employees, not any other Treasury bureau and not any other federal agency.

OPM's 2025 proposed suitability rule changes everything (if finalized)

OPM proposed a rule with the public comment period closing July 3, 2025 that would add "timely filing of tax returns" to the suitability standards agencies use for both applicants and current employees. Under this rule, agencies could remove an employee within 5 workdays if a suitability adjudication finds nonfiling.

Critics note this sidesteps the Chapter 75 due process protections that have governed federal removals since 1978. As of May 13, 2026, the rule has not been finalized. Watch for OPM action in summer or fall 2026.

Schedule Policy/Career: easier to terminate for any cause

Employees reclassified under Schedule Policy/Career (formerly Schedule F) lose traditional civil service removal protections. Tax delinquency could be cited more readily as cause for action under Schedule P/C standards. This affects approximately 50,000 "policy-influencing" positions.

Security clearance: Guideline F is the real risk

For cleared employees, tax delinquency falls under Adjudicative Guideline F (Financial Considerations). An IRS lien, unfiled returns, or large delinquent balance can result in a Statement of Reasons (SOR) or Letter of Intent to Revoke. Guideline F is the most common reason for clearance revocations.

Mitigation that works: File all missing returns immediately (even if you cannot pay), and establish a documented IRS installment agreement. A signed payment plan signals "resolved" to security adjudicators even while payments continue. An open balance without a plan signals "unresolved" and is far more dangerous to the clearance than the dollar amount itself.

The 50,000 Multi-Year Nonfilers (and 122 Referrals)

Most of the $6.3 billion comes from a relatively small number of serious cases:

• 50,000+ current civilian employees failed to file returns in multiple years
• 1,000+ employees delinquent for 6 or more years of their federal career
• 122 employees with 8+ years of nonfiling were referred to IRS Criminal Investigation by TIGTA

If you have a single year of tax debt and you're current on filing, you're in a different population than these multi-year cases. Set up an installment agreement and the FERDI machine generally leaves you alone except for the 15% FPLP withholding from your paycheck.

If you have multiple unfiled years, you are in the higher-risk population. The combination of nonfiling + federal employment is the trigger TIGTA flagged for active enforcement.

What Federal Employees Should Do Now

Three actions, in order:

1. File missing returns immediately, even if you cannot pay. Filing without payment is far less serious than not filing at all. The IRS has automated systems for unpaid balances; unfiled returns trigger different and more aggressive enforcement (and they are the only Guideline F factor that can also become criminal under 26 USC 7203 willful nonfiling).

2. Get into an installment agreement if you owe. Online Payment Agreement at irs.gov/oa for debts under $50,000 can be set up in 15 minutes. For larger balances, Form 9465 by mail or fax. An active installment agreement halts new levy actions and is treated as "resolution in progress" by both the IRS and security clearance adjudicators.

3. Check your TSP. Seriously. If you have substantial TSP and substantial tax debt, the IRS can levy the entire account in one shot using Form 668-R. If the levy hits before age 59.5, you pay regular tax + 10% early withdrawal penalty on the full levied amount. An installment agreement signed BEFORE the levy is served generally prevents this. Once Form 668-R is served on the FRTIB, the levy is automatic.

Calculate Your Federal Retirement Tax Exposure

If you owe taxes and you are planning retirement, the tax math compounds. FERS pension is 95% taxable. TSP withdrawals are fully taxable (or tax-free if Roth TSP). Social Security is partially taxable based on provisional income.

• FERS Retirement Calculator: Model your FERS pension and the 15% FPLP withholding impact on your annuity.
• TSP Calculator: Project TSP growth and withdrawal taxes; especially important if you have outstanding tax debt and substantial TSP balance.
• High-3 Calculator: Verify your pension base for accurate retirement planning.

For broader federal-retiree tax planning, see our Tax Planning for Federal Retirees 2026 guide.

FERDI Act: What Happens If Congress Acts

The FERDI Act has been introduced in every Congress since the 116th but has never been enacted. The 119th Congress (2025-2026) has not yet seen a reintroduction as of May 2026.

Congress	Bill	Sponsors	Status
116th (2019-2020)	S. 3184	Sens. Braun, Ernst	Not enacted
117th (2021-2022)	S. 489	Sens. Braun, Ernst	Not enacted
118th (2023-2024)	S. 1011	Sens. Braun, Ernst	Not enacted
119th (2025-2026)	Not introduced as of May 2026	Expected reintroduction	Watch

If enacted, the FERDI Act would require agencies to fire federal employees with seriously delinquent tax debt. The bill has consistently failed because of due-process objections.

Frequently Asked Questions

How many federal employees owe back taxes in 2026?

TIGTA Report 20263S0023 (released May 6, 2026) found 571,000+ current and retired federal workers owe $6.3 billion in unpaid taxes as of FY 2024. That's a 32% increase in dollar balance and a 43% increase in delinquent population vs FY 2021. The current civilian employee delinquency rate is 6.9%, up from 4.9% in FY 2021.

Which federal agencies have the worst tax delinquency rates?

USPS is the worst at roughly 10% delinquency rate, accounting for 27% of total dollars owed. The "Big Five" (USPS, VA, Navy, Army, DHS) hold 59.3% of the federal workforce but 64% of the unpaid balance. VA's rate is 7.3% with about $380 million owed. Treasury Department has the lowest rate at 2.4%.

Can a federal employee be fired for owing unpaid taxes?

Generally no for non-IRS employees under current law. Tax delinquency alone is not statutory cause for removal under 5 USC Chapter 75. IRS employees ARE subject to mandatory termination under 26 USC 1203 for willful failure to file. OPM's 2025 proposed suitability rule (not yet finalized) would let any agency remove an employee within 5 workdays for nonfiling. Schedule Policy/Career employees lose traditional civil service protections.

What can the IRS levy from a federal employee with unpaid taxes?

Up to 15% of federal salary continuously (via FPLP), 15% of OPM retirement annuity, 15% of Social Security, and the entire TSP balance in a lump sum. Military active-duty pay, survivor annuities, and disability retirement payments are protected. The IRS does not need a court order to apply the FPLP levy after the initial Collection Due Process notice.

What is the FERDI program?

The Federal Employee/Retiree Delinquency Initiative, established in 1993 (IRM 5.19.18). The IRS matches its tax records against OPM, DoD, and USPS payroll files. When a match is found, a FERDI indicator posts to the account and the case enters automated collection. The 2025 LT36 notice campaign sent 427,000 letters, fully resolved 4,700 accounts, and collected $58 million in 6 months.

How does tax delinquency affect my security clearance?

Under Adjudicative Guideline F (Financial Considerations), unfiled returns, unpaid taxes, or IRS liens can trigger a Statement of Reasons or Letter of Intent to Revoke. Guideline F is the most common reason for clearance revocations. Mitigation: file all missing returns immediately and establish an IRS installment agreement.

Related Resources

• Tax Planning for Federal Retirees 2026: FERS pension taxation, IRMAA brackets, Roth conversion strategies
• 2026 Tax Deadlines for Federal Retirees: April 15 filing, 1099-R timing, estimated payments
• Annual Leave Tax 2026: Why your $22K payout becomes $14K
• TSP 1099-R Tax Guide 2026: How TSP distributions are taxed
• FERS Retirement Calculator: Model your pension under FPLP levy scenarios

Sources:

• TIGTA Report 20263S0023: Federal Employee and Retiree Trends Show Increased Tax Noncompliance (May 6, 2026)
• FedSmith: Federal Employees Owe Over $6 Billion in Taxes (May 12, 2026)
• FedWeek: Tax Delinquency Growing Among Federal Employees, Retirees (May 12, 2026)
• IRS Internal Revenue Manual 5.19.18 (FERDI program)
• 26 USC § 1203 (IRS '10 deadly sins')
• IRS Federal Payment Levy Program
• TSP Levy Authority (FRTIB)
• OPM 2025 Proposed Suitability Rule
• Adjudicative Guideline F (Financial Considerations)

This guide is informational and not legal or tax advice. If you owe back taxes or have unfiled returns, consult a tax attorney or CPA experienced in federal employee compliance.