The FERS Supplement bridges the gap between early federal retirement and Social Security eligibility at 62. Here's exactly how it works, who gets it, how it's calculated, and what the earnings test means for you.
One of the most misunderstood benefits in the Federal Employees Retirement System is the FERS Supplement — also called the Special Retirement Supplement (SRS). It's a meaningful monthly payment that many federal employees don't know they qualify for until they're already close to retirement.
Social Security is available starting at age 62. FERS retirement eligibility can come much earlier — at your Minimum Retirement Age (MRA, which is 56 or 57 for most employees born after 1952) with 30 years of service, or at 60 with 20 years. That gap between federal retirement and Social Security eligibility is the problem the FERS Supplement was designed to solve.
The supplement approximates the portion of your Social Security benefit that you earned through your years of federal FERS service. It's paid monthly alongside your pension, from the date you retire until you turn 62 — at which point Social Security becomes available and the supplement stops automatically.
You receive the FERS Supplement if you:
You do not receive the supplement if you:
The FERS Supplement is calculated by OPM using a formula tied to your actual Social Security earnings record. The simplified version:
For example: If your estimated Social Security benefit at 62 is $1,800/month, and you have 28 years of FERS service:
($1,800 ÷ 40) × 28 = $1,260/month
That's $1,260 per month on top of your FERS pension, paid until age 62. Over a 5-year bridge from MRA+30 retirement at 57 to age 62, that's more than $75,000.
The FERS Supplement is subject to the Social Security earnings test — the same rule that reduces Social Security for people who retire early but keep working. In 2026, if your earned income from employment exceeds $23,400/year (roughly $450/week), your supplement is reduced by $1 for every $2 you earn above that threshold.
This catches many FERS retirees off guard. If you retire from federal service and take a private-sector job paying $60,000/year, your supplement would be reduced significantly or eliminated:
$60,000 - $23,400 = $36,600 above threshold $36,600 ÷ 2 = $18,300 reduction
On a $1,260/month ($15,120/year) supplement, a $18,300 reduction would eliminate it entirely.
The earnings test applies only to earned income (wages and self-employment). Investment income, rental income, TSP withdrawals, and your FERS pension itself do not count against the limit.
The Windfall Elimination Provision (WEP) and Government Pension Offset (GPO) — two rules that previously reduced Social Security benefits for federal employees — were fully repealed by the Social Security Fairness Act, signed in January 2025. This is unambiguously good news for FERS employees. Your Social Security benefit will now reflect your full earnings history without any reduction for your federal pension.
The FERS Supplement often changes the calculus on when to claim Social Security. Because you're already receiving a monthly bridge payment until 62, there's less urgency to claim Social Security the moment you turn 62 (which would mean a permanently reduced benefit). With the supplement covering part of your income gap, you may be able to comfortably delay Social Security to your full retirement age or beyond — and earn a significantly larger benefit.
High-3 Retirement Planner calculates your estimated FERS Supplement based on your salary history and years of FERS service, and shows you exactly how it fits into your retirement income picture before and after age 62.
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