LEAP, AUO, Premium Pay: Your Federal Pension Math

Last Updated: May 3, 2026 Reading Time: 9 min

If you receive LEAP as an 1811 criminal investigator, every dollar of it counts toward your federal pension. If you receive AUO and meet the statutory LEO definition, same answer. If you receive AUO without the LEO definition, you get zero retirement credit for it. And if you receive Sunday differential, night pay, holiday double-time, or hazardous duty pay, none of it counts toward your High-3 no matter what your job title is. This is the math most federal special pay coverage gets wrong, and it determines hundreds of dollars per month of your retirement annuity for the rest of your life.

Key Takeaways

• LEAP (5 USC 5545a) always counts toward High-3, TSP base, FEGLI, and FEHB premium share for qualifying 1811 criminal investigators.
• AUO (5 USC 5545(c)(2)) counts toward High-3 and TSP base only for employees meeting the statutory LEO definition. Non-LEO AUO recipients get zero retirement credit.
• All other premium pay (Sunday differential, night pay, holiday pay, standby duty, hazardous duty, post differential, danger pay) is excluded from High-3.
• TSP base is broader than retirement-credit base. Premium pay flows through TSP contribution calculations even though it does not flow through pension calculations.
• The LEAP certification loss trap costs hundreds per month for life if you lose certification in the final 3 years before retirement.

The LEAP vs AUO Distinction

Federal pay coverage routinely treats LEAP and AUO as equivalent supplements. They are not. The statutory difference produces very different retirement outcomes.

LEAP (Law Enforcement Availability Pay), 5 USC 5545a. A 25% supplement on basic pay for criminal investigators in the 1811 series who certify they are available for unscheduled duty an average of two hours per workday. LEAP is structurally treated as basic pay for retirement, TSP, FEGLI, and FEHB premium calculations. It rolls into High-3 just like locality pay.

AUO (Administratively Uncontrollable Overtime), 5 USC 5545(c)(2). A 10 to 25 percent supplement for positions where the agency cannot predict the timing or amount of overtime. Common in some law enforcement positions, certain inspector roles, and IT specialists with on-call duties.

Here is the catch. The statutory text ties AUO's retirement treatment to the LEO definition in 5 USC 8331(20). If you meet that definition (your primary duty is investigation, apprehension, or detention of suspected or convicted criminals), AUO counts toward your High-3. If you do not, AUO is real take-home compensation but invisible to OPM's pension calculator.

A 1811 criminal investigator receiving both LEAP and AUO gets retirement credit for both. An IT specialist on on-call rotation receiving AUO gets compensation but no pension credit. A non-LEO inspector receiving AUO under an agency standby provision gets the same answer.

The cleanest way to verify: pull your LES, find your AUO line item, and check whether your retirement calculation includes it. If High-3 services or eOPF show your AUO in your basic pay history, you are an LEO for AUO purposes. If your AUO is in a separate non-base column, you are not, and your pension is calculated without it.

What Counts Toward Your High-3 (the Matrix)

The matrix below shows where each pay type lands. Save the screenshot.

Pay Type	Counts toward High-3?	Counts toward TSP base?	Counts toward FEHB premium?	Subject to GS pay cap?
Basic pay (GS rate + locality)	Yes	Yes	Yes	Yes (capped at EX Level IV, $197,200 in 2026)
LEAP (1811 criminal investigators)	Yes	Yes	Yes	Calculated on capped basic
AUO (LEO-eligible positions)	Yes	Yes	Yes	Subject to biweekly cap
AUO (non-LEO positions)	No	Yes	No	Subject to biweekly cap
Sunday premium pay (25%)	No	Yes	No	Subject to biweekly cap
Night pay (10% differential)	No	Yes	No	Subject to biweekly cap
Holiday pay (double-time)	No	Yes	No	Subject to biweekly cap
Standby duty pay (5-25%)	No	Yes	No	Subject to biweekly cap
Hazardous duty pay	No	Yes	No	Exempt from biweekly cap
Post differential / danger pay (overseas)	No	Yes	No	Subject to limits

Two anomalies worth noting:

1. Hazardous duty pay is exempt from the biweekly premium pay cap (so it can push total compensation above GS-15 step 10 in a given pay period) but is still excluded from High-3. The two-way exception is unusual.
2. Locality pay is technically a separate category from basic pay but is included in High-3 for retirement purposes. This is why locality changes near retirement (a transfer to a higher-locality area in the final 3 years) can boost your pension significantly.

The LEAP Certification Loss Trap

This is the biggest hidden trap in 1811 retirement planning. If you lose LEAP certification in the final 3 years before retirement, your High-3 drops sharply.

Concrete example. A GS-13 Step 10 DC employee earns approximately $151,000 in base pay for 2026. With LEAP at 25%, that is an additional $37,750 per year. If LEAP applies for all 3 years of the High-3 window, the High-3 average is $188,750.

If LEAP is lost for ONE of those 3 years (say the employee transitions to a non-1811 supervisory role 18 months before retirement), the High-3 average drops to approximately $176,167. A loss of $12,583 in High-3 average.

A 1.0% FERS multiplier applied to that $12,583 gap, for a 25-year career, is $3,146 per year less in pension. For life. With COLA. That is roughly $262 per month, or $78,650 over a 25-year retirement. From a single year of LEAP gap.

Practical guidance for 1811s within 5 years of retirement:

• Request your LEAP certification status in writing every year
• Time any duty change or transfer to occur OUTSIDE your High-3 window
• If a forced reassignment threatens LEAP certification, get the date in writing immediately
• Run your projected pension under a no-LEAP scenario before accepting any role change

Use the High-3 Calculator to model your specific High-3 with and without LEAP, then the FERS Retirement Calculator to convert that gap into projected pension dollars.

Audience-Specific Notes

1811 Criminal Investigators (the cleanest LEAP picture)

Your LEAP fully counts toward High-3, TSP base, FEGLI, and FEHB. Your AUO also counts (you meet the LEO definition). You are eligible for the LEO 1.7%/1.0% FERS multiplier and 20-year early retirement at age 50 (or any age with 25 years). The mandatory retirement age is 57. Your retirement math is one of the most favorable in federal service, and the LEAP certification loss trap is the single biggest threat to it.

1801 Law Enforcement Officers

Most 1801s qualify for both LEAP (if certified) and the LEO retirement formula. AUO treatment depends on the specific position. Verify your AUO retirement-credit status with your HR specialist before assuming it counts.

0083 Police Officers

LEAP is generally not paid to 0083 positions. AUO treatment depends on whether the position meets the LEO definition. Most police series positions do meet it, but the AUO-specific certification can vary by agency.

Air Traffic Controllers (ATCs)

ATCs receive the LEO retirement formula (1.7%/1.0% FERS multiplier, 20-year retirement, age-56 mandatory retirement with limited extensions to 61). But ATCs do not receive LEAP. Your High-3 is calculated on base + locality only. Other ATC-specific differentials (e.g., night pay, Sunday differential) are excluded from High-3 just like for other employees.

IT Specialists (GS-2210) on On-Call Rotations

If your agency pays you AUO, check whether you meet the statutory LEO definition. You almost certainly do not (your primary duty is IT support, not law enforcement). Your AUO is taxable income subject to TSP contributions, but it is invisible to your pension calculation. Plan accordingly.

Border / Customs Inspectors

You may receive Sunday differential, night pay, hazardous duty pay, and AUO across most pay periods. None of those (except AUO if you meet the LEO definition) count toward your High-3. The pay you receive is real, but the pension you earn is calculated on basic pay + locality only.

TSP Implications

The TSP base is broader than the High-3 base. TSP contributions are calculated on basic pay PLUS premium pay across most categories. This means:

• A non-LEO AUO recipient sees AUO flow into TSP contribution calculations even though it does not count toward High-3
• Premium pay grows your TSP even though it does not grow your pension
• Sunday and night differential contribute to your TSP growth potential

This matters for retirement planning. If you are heavy on premium pay but light on retirement-eligible base, your TSP becomes the more valuable component of your retirement income. See our TSP-vs-IRA Rollover Decision guide for what to do with that TSP balance at retirement.

Verify Your High-3 Before You Retire

The single most useful action: pull your last 3 years of LES records, identify which line items are basic pay vs premium pay, and verify your eOPF salary history reflects them correctly. Errors in eOPF can cost you hundreds per month in pension.

The High-3 Calculator helps you verify the math. The FERS Retirement Calculator projects your annuity at different retirement dates. For full context on the FERS system and retirement service credit, see our FERS Retirement Guide.

For LEOs facing union contract changes (especially DoD), our DoD Union Contract Termination Survival Guide covers how the April 2026 CBA changes affect retention and separation. For earnings rules in retirement (relevant to LEOs returning to work), our FERS Supplement Earnings Limit guide walks through the income tests.

Verify your High-3 →

Frequently Asked Questions

Does LEAP count toward my federal pension?

Yes, fully. Law Enforcement Availability Pay (LEAP) under 5 USC 5545a is treated as basic pay for retirement, TSP base, FEGLI, and FEHB premium share for qualifying 1811 criminal investigators. It is the cleanest integration of any special-pay category. Your High-3 includes LEAP for every year you were certified.

Does AUO count toward my federal pension?

It depends on whether you meet the statutory LEO definition. Administratively Uncontrollable Overtime (AUO) under 5 USC 5545(c)(2) counts toward High-3 and TSP base ONLY for employees who meet the LEO definition. Non-LEO employees receiving AUO get zero retirement credit for it. This is the single most-missed distinction in federal special pay.

What happens if I lose LEAP certification within 3 years of retirement?

Your High-3 drops by roughly 25% of basic pay for the affected years. For a GS-13 Step 10 DC employee with $151,000 base, losing LEAP ($37,750/year) for one year of the High-3 window costs about $12,500 off the average. That translates to several hundred dollars per month less in pension for life. Schedule any duty change with this in mind, and request your LEAP certification status in writing 5 years before your planned retirement.

Is Sunday differential or night pay included in my High-3?

No. Sunday differential (25%), night pay (10%), holiday pay, standby duty pay, hazardous duty pay, post differential, and danger pay are all excluded from the High-3. They are also excluded from FERS service credit calculations. A border inspector working every Sunday and night shift for 30 years gets zero additional pension credit for those supplements.

Do I pay TSP contributions on premium pay?

Yes. TSP contributions are calculated on basic pay PLUS premium pay (Sunday differential, night pay, holiday pay, etc.) regardless of whether those types count toward your High-3. The TSP base is broader than the retirement-credit base. Your TSP balance grows from premium pay even though your pension does not.

What is the difference between LEAP and AUO?

LEAP is a 25% supplement specifically for criminal investigators (1811 series) under 5 USC 5545a. AUO is a 10-25% supplement for positions where overtime is unpredictable, paid under 5 USC 5545(c)(2). LEAP always counts toward High-3 for qualifying 1811s. AUO counts toward High-3 only for employees meeting the statutory LEO definition. AUO recipients in IT, certain agencies, and other non-LEO roles receive AUO as compensation but get no retirement credit for it.

How does the GS pay cap affect my special pay?

The GS pay cap (Executive Schedule Level IV, $197,200 in 2026) limits basic pay plus locality. LEAP is calculated on capped basic pay. Hazardous duty pay is exempt from the biweekly premium pay cap (a quirk worth understanding) but is still excluded from High-3. Most other premium pay types are subject to a separate biweekly cap that prevents total compensation from exceeding GS-15 step 10 in any single pay period.

Do air traffic controllers get LEAP?

No. Air traffic controllers do not receive LEAP. They have the LEO 1.7%/1.0% FERS multiplier and 20-year early retirement, but their High-3 is calculated on base salary plus locality only. Mandatory retirement at age 56 (with limited extensions to 61) applies. ATCs and 1811 criminal investigators have similar retirement formulas but very different pay-base structures.

I work in IT and receive AUO. Does it count toward my pension?

No, unless you also meet the statutory LEO definition (you typically do not). IT specialists, GS-2210 series, and similar professional positions can receive AUO under their agency's standby/on-call provisions, but the statutory text of 5 USC 5545(c)(2) ties retirement-credit treatment to LEO status. Your AUO is real compensation, but your pension calculator ignores it.

Related Resources

• FERS Retirement Guide: Pillar guide covering the full FERS system, MRA, service credit, and pension math
• TSP vs IRA Rollover Decision: What to do with your TSP at retirement (especially relevant if premium pay has built a large TSP balance)
• DoD Union Contract Termination Survival Guide: For DoD-affiliated LEOs facing CBA changes
• FERS Supplement Earnings Limit 2026: Earnings rules for the FERS supplement (relevant for LEOs returning to work post-retirement)
• High-3 Calculator: Verify your High-3 with and without LEAP, AUO, premium pay
• FERS Retirement Calculator: Project your full pension under different scenarios

Sources: 5 U.S.C. § 5545a (Availability Pay) · OPM Fact Sheet: Availability Pay · OPM Fact Sheet: Premium Pay (Title 5) · OPM Guidance on AUO and FLSA · OPM Maximum GS Pay Limitations · eCFR 5 CFR Part 550 Subpart A (Premium Pay) · DoD DCPAS: Law Enforcement Availability Pay · CRS Report R42631: Retirement Benefits for Federal Law Enforcement Personnel