Military Pension + FERS: Can You Collect Both?

Last Updated: June 24, 2026

You retired from the military, and now you're taking a federal civilian job. The question everyone asks: can I draw my military pension and build a FERS pension at the same time? The answer is yes on the paychecks and a qualified no on the pensions, and the gap between those two facts is where a six-figure decision hides.

Here's how it actually works, and the math that should drive your choice.

Key Takeaways

  • Pay is not the problem. Since 1999, military retirees collect full retired pay AND a full GS salary, no offset.
  • Pensions are the catch. You can't count the same years toward both a military pension and a FERS annuity.
  • Two paths: keep the military pension and start FERS fresh, OR waive it, pay a 3% deposit, and credit those years toward FERS.
  • Reserve and Guard retirees get both. They keep reserve retired pay and can still buy back active-duty time for FERS.
  • The waiver is permanent, so run the numbers before you file, not after.

First, the Good News: No Pay Offset

For decades, federal civilian salary was reduced for military retirees under an old "dual compensation" rule. That rule is gone. P.L. 106-65 repealed the 5 U.S.C. 5532 salary offset effective October 1, 1999. A military retiree working as a GS employee today collects the full military retired pay and the full GS salary with zero reduction.

So the paycheck question is settled. What's left is the pension question, and that's the one with real money on it.

The Real Decision: Two Pensions, Same Years

The rule is simple to state: you cannot get pension credit twice for the same years of service. Your 20 years of active duty already earn you a military pension. You cannot also count those 20 years toward a FERS annuity unless you give something up.

That leaves two paths.

Option A: Keep the military pension, start FERS fresh

  • You collect your full military retired pay right away.
  • Your FERS pension builds only on your civilian years.
  • Your active-duty years are not credited toward FERS.
  • Best when: your military pension is large (a 20+ year active retiree at O-5 or above), your expected federal career is short, or your current military pension is worth more than the FERS gain a buyback would produce.

Option B: Waive the military pension, buy back the service

  • Your military retired pay stops during your federal career (and permanently once you retire under FERS with those years credited).
  • Your active-duty years count toward your FERS annuity, adding 1% of your High-3 per year.
  • You pay a deposit of 3% of your military basic pay.
  • Best when: your federal career will run 15 to 25+ years, your military pension is smaller (shorter service or enlisted final grade), and the lifetime FERS gain beats the military pension you give up.

The Break-Even Math

This is where you have to use your own numbers, but an example shows the shape of it.

Take an E-7 with 12 years of active duty and military basic pay averaging about $45,000 over that period.

Factor Figure
Military basic pay, total ~$540,000
Buyback deposit (3%) ~$16,200
FERS pension added (12 yrs × 1% × $90,000 High-3) ~$10,800/year for life
Military pension waived (E-7, 12 yrs) $2,100/month ($25,200/year)

For this person, waiving a ~$25,200/year military pension to gain ~$10,800/year in FERS does not pencil out on its own. But the picture flips with a long federal career: those 12 bought-back years push the FERS multiplier from, say, 20% to 32% of High-3, which at a GS-13 High-3 can mean roughly $30,000/year more in pension. The longer you'll work as a fed and the higher your GS High-3, the more the buyback wins.

The variables that decide it: length of federal career, rank at military separation, expected GS High-3, and how long you'll draw the pension. There's no rule of thumb that survives contact with the actual numbers, so model yours with the Military Buyback Calculator and compare the annuity outcomes in the FERS Retirement Calculator.

The Exception Most People Miss: Reserve and Guard Retirees

If your retirement is a Reserve Component retirement under Title 10 Chapter 1223 (the 20-qualifying-year retirement you draw starting at age 60, not an active-duty 20-year pension), the waiver rule does not apply to you. You can:

  1. Keep receiving your reserve retired pay,
  2. Buy back your active-duty periods for FERS credit,
  3. Pay the 3% deposit on those active-duty periods, and
  4. Never waive your reserve pension.

That is genuinely the best of both worlds, and it turns on one distinction: Chapter 1223 (reserve retirement) versus Chapter 65 (active-duty retirement). Combat-related disability retirees get a similar exemption under 5 U.S.C. 8332(c)(2).

A Few Details That Trip People Up

  • The deposit is based on your old military basic pay, not your current GS salary, and not BAH, BAS, or special pays. DFAS issues a certified earnings estimate (form RI 20-97) with your exact figure.
  • The interest-free window is roughly three years from your first FERS-covered employment. After that, interest accrues (the 2026 rate is 4.25%). Pay early.
  • Post-1956 service requires a deposit; pre-1957 service is credited automatically (the cutoff tracks when Social Security tax began).
  • The waiver is irreversible once you retire with the years credited. Decide before you file SF-3107.

Calculate Your Decision

Use our free Military Buyback Calculator to estimate your deposit and break-even, then run the with-and-without scenarios in the FERS Retirement Calculator. Start with the buyback math →

Frequently Asked Questions

Can a military retiree collect both military retired pay and a full GS salary?

Yes. The old dual-compensation salary offset was repealed by P.L. 106-65, effective October 1, 1999. Military retirees collect their full military retired pay and their full GS salary with no reduction. The only restriction is on counting those same years toward a FERS pension.

Can I count my active-duty years toward FERS?

Only if you waive your military retired pay for the period those years are credited, and pay a deposit of 3% of your military basic pay (plus interest if you're past the roughly three-year interest-free window). You cannot collect a military pension and a FERS pension for the same years.

Is the waiver permanent?

Yes. Once you retire from federal service and elect to count military years in your FERS computation, the waiver applies for life. You cannot undo it after retirement, so decide before you submit your application to OPM.

I'm a Reserve or Guard retiree. Do the same rules apply?

No. Reserve Component retirees under Title 10 Chapter 1223 are exempt from the waiver requirement. You can keep your reserve retired pay AND buy back active-duty periods for FERS credit by paying the 3% deposit.

How much does buying back military time add to a FERS pension?

Each bought-back year adds 1% of your High-3 average salary to your annual pension (1.1% if you retire at 62+ with 20+ years). On a $95,000 High-3, one year is worth about $950/year for life.

Can a combat-disability retiree collect both without waiving?

Yes. If your retired pay is based on a disability incurred in combat or caused by an instrumentality of war during a period of war, you can count those years toward FERS without waiving military pay, under 5 U.S.C. 8332(c)(2).

Sources: OPM Military Retired Pay, OPM Creditable Service, Federal Register: Repeal of Dual Compensation Reductions, OPM Dual Compensation Waivers.