FERS Supplement: Who Gets It, How It Is Figured and When It Ends
Figures checked November 12, 2026 against primary sources
The FERS annuity supplement is an extra monthly payment for federal employees who retire before age 62 on an immediate annuity that is not reduced for age. It stands in for the Social Security benefit you cannot claim yet, and it stops at 62 at the latest. OPM figures it from your estimated full-career Social Security benefit times your FERS years over 40. Every rule here is from OPM's own retirement pages.
What the FERS Supplement Is
FERS employees who retire after 62 are generally eligible for three things: the FERS annuity, their Thrift Savings Plan and Social Security. Retire earlier and Social Security is not available yet. OPM: if you retire before 62 and are not yet eligible for Social Security, "you are generally entitled instead to a FERS annuity supplement."
- It is part of your FERS annuity, not a Social Security benefit.
- It replaces Social Security until 62. OPM says it "is meant to replace the amount of the Social Security benefit you would have otherwise received had you retired after age 62."
- It is figured as if you could claim Social Security the day you retired.
Who Qualifies
The core rule, from OPM: "If you retire voluntarily on an immediate annuity which is not reduced for age, you may be eligible for an annuity supplement." An immediate annuity is one that begins within 30 days after you leave federal service.
OPM's voluntary retirement table shows the standard age and service combinations and whether the annuity is reduced for age:
| Minimum age | Minimum years of service | Annuity | Supplement? |
|---|---|---|---|
| Minimum retirement age (MRA) | 30 | No age reduction | Generally yes, until it ends |
| 60 | 20 | No age reduction | Generally yes, until it ends |
| 62 | 5 | No age reduction | No gap to fill: the supplement ends by the month you reach 62 |
| MRA | 10 | Reduced 5% for each year under 62 | No (MRA+10) |
Special provisions and VERA. OPM's table has two more rows: any age with 25 years of service, and age 50 with 20 years. They apply only if you retire under special provisions for air traffic controllers, law enforcement officers, firefighters or Military Reserve Technicians, or if OPM authorizes a Voluntary Early Retirement Authority (VERA) because your agency is undergoing a major reorganization, reduction in force or transfer of function.
Involuntary and early-out retirements. You can also get the supplement if you retired involuntarily before your MRA, or voluntarily because of a major reorganization, a reduction in force, or an early retirement for Members of Congress. In those three cases, OPM says the supplement does not start until you reach your MRA.
CSRS and FERS service. If your annuity has both a CSRS and a FERS part, you can still get a supplement, but you must have completed one full calendar year of service under FERS rules.
Who Does Not Get It
OPM: "If you receive a deferred benefit, a disability benefit or an immediate MRA+10 benefit, you will not be eligible for the annuity supplement."
- Deferred annuity: you were not eligible for an immediate annuity within 30 days of leaving your agency, so the annuity starts later. No supplement.
- Disability retirement: no supplement. OPM notes that if you choose disability retirement instead of an immediate retirement, you give up the supplement.
- MRA+10: an immediate annuity at your MRA with at least 10 years of service. No supplement, and the annuity itself is cut 5% for each year you are under 62. OPM lets you postpone the annuity to shrink or avoid that cut.
How OPM Figures the Supplement
OPM computes the supplement as if you were 62, fully insured for Social Security when the supplement begins, and had applied for Social Security benefits. Then:
- OPM estimates your full-career (40-year) Social Security benefit.
- It counts your civilian service under FERS.
- It multiplies the full-career estimate by your FERS years divided by 40.
| OPM's own example | Amount |
|---|---|
| Estimated full-career Social Security benefit | $1,000 |
| Years worked under FERS | 30 |
| Fraction | 30 ÷ 40 = .75 |
| Supplement before any reductions | $1,000 × .75 = $750 |
Two things follow from the formula. Only civilian FERS years count in the fraction. And the base is a full 40-year Social Security estimate, so the supplement is smaller than the full-career estimate if you have fewer than 40 years of civilian service under FERS. The FERS retirement calculator runs the annuity side of the math.
When the Supplement Ends
Eligibility lasts until the earlier of:
- the last day of the month before the first month you would be entitled to Social Security benefits, or
- the last day of the month in which you reach age 62.
So the supplement is a bridge with a fixed end. Plan for your income to change in the month after it stops: from then on, any Social Security comes from SSA, not OPM.
The Earnings Test: Working After You Retire
Like Social Security, the supplement has an earnings test.
- The cut: $1 for every $2 you earn over the Social Security exempt amount. The test looks at your earnings in the immediately preceding year.
- It can reach $0. High enough earnings can wipe out the supplement.
- Your annuity is safe. OPM: "your remaining FERS employee annuity will not otherwise be reduced."
- You must report earnings to OPM while you receive the supplement. OPM sends instructions once payments start.
What counts as earnings: wages for work in the year, plus net earnings from self-employment, minus any net loss from self-employment. Your FERS annuity does not count.
The exempt amount. The Social Security Administration sets it each year, and it rises with average wages. We do not print the figure here because we could not re-pull it from SSA on our check date. Get the current amount from SSA's Exempt Amounts Under the Earnings Test page, which is the page OPM links to.
Minimum Retirement Age by Birth Year
Your MRA decides how early an MRA+30 retirement, and so the supplement, can start.
| Year of birth | MRA |
|---|---|
| Before 1948 | 55 |
| 1948 | 55 and 2 months |
| 1949 | 55 and 4 months |
| 1950 | 55 and 6 months |
| 1951 | 55 and 8 months |
| 1952 | 55 and 10 months |
| 1953 to 1964 | 56 |
| 1965 | 56 and 2 months |
| 1966 | 56 and 4 months |
| 1967 | 56 and 6 months |
| 1968 | 56 and 8 months |
| 1969 | 56 and 10 months |
| 1970 or later | 57 |
Planning Around the Supplement
- MRA+10 vs MRA+30. Leaving voluntarily at your MRA with at least 10 but fewer than 30 years (MRA+10) means no supplement and a reduced annuity. VERA, involuntary and special-provision retirements follow the rules under "Who qualifies" above. Leaving at 60 with 20 years, or at your MRA with 30, keeps both the full annuity and the supplement.
- Working after retirement. If you plan a second career before 62, check the SSA exempt amount and budget for the $1-for-$2 cut. The annuity itself is not touched.
- The gap after the supplement. When it ends, any Social Security comes from SSA. See our Social Security COLA 2027 page for the yearly increase, and the FERS retirement guide for the annuity formula.
Sources & Methodology
- U.S. Office of Personnel Management: FERS Information: Types of Retirement (supplement purpose, eligibility, exclusions, formula and example, end date, earnings test, definition of earnings, voluntary retirement table, MRA by birth year).
- Social Security Administration: Exempt Amounts Under the Earnings Test (linked for the current exempt amount; not quoted).
Method notes. All rules were re-read from OPM's page on November 12, 2026. The only dollar figures on this page are OPM's own illustrative example ($1,000 and $750). We do not show the SSA exempt amount because SSA's page could not be re-pulled on our check date; we did not estimate it.
This article is for general information and is not financial, tax or retirement advice. OPM's example is illustrative and is not anyone's actual supplement. Wealthy Pot is not affiliated with OPM or the Social Security Administration. Rules were checked against OPM on 2026-11-12. Confirm your eligibility and amount with your agency's HR office and OPM before you decide when to retire.
FAQ
Who gets the FERS supplement?
Federal employees who retire voluntarily before 62 on an immediate annuity not reduced for age may be eligible, such as MRA with 30 years or 60 with 20. Some involuntary and early-out retirees get it too, starting at their MRA.
Does MRA+10 get the supplement?
No. OPM says an immediate MRA+10 benefit is not eligible. Deferred and disability retirements are not eligible either.
When does the FERS supplement stop?
At the earlier of the last day of the month before you would be entitled to Social Security, or the last day of the month you reach 62.
How is the FERS supplement calculated?
OPM estimates your full-career (40-year) Social Security benefit and multiplies it by your FERS years over 40. OPM's example: $1,000 × 30/40 = $750, before reductions.
Can I work and still get the supplement?
Yes, but it is cut $1 for every $2 you earn over the Social Security exempt amount, based on the previous year. Your FERS annuity is not reduced. You must report earnings to OPM.
Is the FERS supplement Social Security?
No. It is part of your FERS annuity, paid by OPM.
Cite This Page
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"FERS Supplement: Who Gets It, How It Is Figured and When It Ends." Wealthy Pot, 2026. https://wealthypot.com/fers-supplement/
