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FERS Supplement Calculator 2026
Estimate your Special Retirement Supplement — the monthly income bridge from your FERS retirement date to age 62 — using the official OPM formula and the 2026 earnings test.
Reviewed by Jonathan D., 20-year federal employee · Formulas verified against OPM.gov ·
Enter your information
From your SSA.gov Social Security statement.
Enter the annual amount (multiply monthly × 12 if your statement shows monthly).
Whole years only; capped at 40 in the formula.
Used to calculate years until 62 and your total bridge value.
Optional — leave blank if you will not work after retiring.
2026 earnings limit: $24,480/year.
Enter your details above to see your SRS estimate
Need an example? ($20,000 SS benefit · 30 years FERS · age 57).
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Editorial note — not financial advice
This tool is independent journalism and education for federal employees. It is not financial, legal, tax, or investment advice. Pay, retirement, TSP, and benefits decisions depend on your individual circumstances and on the rules OPM, the IRS, and your agency apply. Verify anything you read here with your HR Benefits Officer, a fee-only financial planner, or a qualified tax professional before acting. See our editorial standards and terms for details.
What is the FERS Special Retirement Supplement?
The FERS Special Retirement Supplement (SRS) is an additional monthly payment OPM provides to eligible FERS retirees who leave federal service before age 62. Because Social Security benefits cannot begin before 62, the SRS bridges the income gap from your retirement date until that milestone.
It approximates the Social Security benefit you earned through your federal service alone. It is not a Social Security benefit — it is paid entirely by OPM from the Civil Service Retirement and Disability Fund — but it is calculated using your Social Security earnings record as an input.
The official SRS formula
Annual SRS = SS Benefit at 62 × (FERS Years ÷ 40)
Source: OPM FERS Handbook, Chapter 51. A full 40-year career produces 100% of the base; 30 years produces 75%.
Worked example: $20,000 × 30 years
A federal employee retires at 57 with 30 years of FERS service and a $20,000/year estimated Social Security benefit at 62.
FERS Special Retirement Supplement calculation example
Step
Calculation
Result
SS benefit at 62 (annual)
From SSA.gov statement
$20,000
FERS service ratio
30 years ÷ 40
0.75
Annual SRS
$20,000 × 0.75
$15,000
Monthly SRS
$15,000 ÷ 12
$1,250
Years of supplement
62 − 57
5 years
FedTools 2026 analysis: a 30/40 FERS retiree with a $20,000 SS estimate receives $1,250/month — worth $75,000 over the five years before age 62.
The 2026 earnings test: $24,480 limit
If you work for wages after retiring under FERS, the Social Security earnings test applies. For 2026 you can earn up to $24,480/year without any reduction. Above that, your SRS is reduced by $1 for every $2 earned over the limit.
FERS SRS earnings test reduction examples
Earnings
Over limit
Reduction
Net SRS
$0 – $24,480
$0
$0
$15,000
$30,000
$5,520
−$2,760
$12,240
$45,000
$20,520
−$10,260
$4,740
$54,480+
$30,000+
−$15,000
$0 (phased out)
Example uses $15,000 annual SRS ($20,000 SS benefit × 30/40 years). The break-even earnings level where SRS = $0 depends on your individual SRS amount.
What counts as "earned income"?
Counts toward the limit
✓Wages from a job (W-2)
✓Net self-employment income
✓Consulting / contract work
Does NOT count
✕TSP / IRA withdrawals
✕Rental income
✕Dividends and capital gains
✕Your FERS annuity
✕Social Security benefits
Who qualifies for the FERS supplement?
Eligible
✓MRA + 30 — full immediate retirement
✓Age 60 + 20 years — standard immediate retirement
✓LEO / FF / ATC — special-provision retirement
✓VERA — voluntary early retirement (agency-authorized)