The FERS Special Retirement Supplement is one of the least-understood benefits in the federal retirement system. It pays a monthly amount approximating the Social Security benefit you have earned from your FERS service, bridging the gap from when you retire to when you turn 62. Not every FERS retiree receives it. And the rules around when it starts, what reduces it, and when it stops are exactly the kind of detail that surprises people mid-retirement.
Who qualifies
The FERS Supplement is available to employees who retire with an immediate annuity before age 62 under specific service requirements. Three scenarios qualify:
- Employees who retire at their Minimum Retirement Age (MRA, between 55 and 57) with 30 or more years of service
- Employees who retire at age 60 with 20 or more years of service
- Employees who retire under Voluntary Early Retirement Authority (VERA) at age 50 with 20 years, or any age with 25 years
Employees who retire under MRA+10 (MRA with 10 to 29 years of service) do not receive the supplement. Law enforcement officers, firefighters, and air traffic controllers who retire early under special provisions generally do qualify.
How much is it
The formula: (Years of creditable civilian FERS service divided by 40) multiplied by your estimated Social Security benefit at age 62.
Your estimated Social Security benefit at age 62 is on your Social Security statement at ssa.gov. Use the estimate shown for age 62 specifically, not the current benefit estimate.
Example: 28 years of FERS service, estimated SS benefit at 62 is $1,800/month. (28 divided by 40) times $1,800 equals $1,260/month supplement. This is not your Social Security benefit. It is a proportional estimate based on your FERS years. You still claim actual Social Security separately at whatever age you choose.
The earnings test
The supplement is subject to a Social Security-style earnings test. If you take another job after federal retirement and earn wages above the annual exempt amount (approximately $22,320 in 2025), the supplement is reduced $1 for every $2 you earn over the limit. Investment income, pension payments, and most passive income do not count. Retirees who consult or take part-time work after leaving federal service should calculate whether their earnings will reduce the supplement and plan accordingly.
When it stops
The FERS Supplement ends exactly at your 62nd birthday. Not your 62nd birthday month. The month you turn 62, the supplement is gone. This is a cliff, not a taper. Your budget the month before turning 62 looks different from the month after.
At 62, you are eligible to begin Social Security. Whether you claim at 62 or delay to boost your lifetime benefit is a separate decision from the supplement. Many retirees find the right move is to delay Social Security to 66 or 70, which requires having other income sources to cover the gap between when the supplement ends and when SS starts.
Taxes
The FERS Supplement is taxable as ordinary income, reported on your 1099-R from OPM alongside your regular FERS annuity. If you are also doing part-time work and earning close to the exempt amount, model your combined taxable income carefully. It may push you into a higher bracket than anticipated. Use the FERS calculator on this site to project your full retirement income picture: base annuity, supplement, and Social Security at various claiming ages.