FERS Retirement Calculator
FERS basic annuity = High-3 × years × 1.0% (or 1.1% if 62+ with 20+ years). Calculator runs that formula instantly.
Updated November 2026
This calculator leaves out the FERS annuity supplement. Estimate it with the FERS supplement calculator. Retiring at your MRA with 10 to 29 years? Compare starting now with postponing in the FERS MRA+10 calculator.
How the FERS basic annuity formula works
- High-3: Average of three highest consecutive years of basic pay. Includes locality pay; excludes bonuses, OT, awards.
- Years: All FERS-covered service + bought-back military + converted sick leave.
- Multiplier: 1.0% standard. 1.1% only if retire at 62+ AND 20+ years.
Worked example 1: 30 years at $100k, retire at 60
$100,000 × 30 × 1.0% = $30,000/yr ($2,500/mo). Plus FERS Annuity Supplement until 62.
Worked example 2: 32 years at $100k, retire at 62
Both conditions for 1.1% multiplier met. $100,000 × 32 × 1.1% = $35,200/yr ($2,933/mo). Vs retiring at 61 with same High-3 and 31 years (1.0%): $31,000/yr. Crossing both thresholds adds $4,200/yr for life.
Worked example 3: 25 years at $90k, retire at MRA (57)
$90,000 × 25 × 1.0% = $22,500/yr before the MRA+10 cut. Starting at 57 cuts it 25% to $16,875/yr ($1,406/mo), with no FERS Annuity Supplement. Postponing the start to 60 removes the cut.
Survivor annuity options
- Full (50%): 10% cost; spouse gets 50%.
- Partial (25%): 5% cost; spouse gets 25%.
- None: spouse loses FEHB at your death. Notarized spousal consent required.
What this calculator does NOT include
- Social Security — use ssa.gov/myaccount.
- TSP withdrawals — separate payments. See TSP withdrawal.
- FERS Annuity Supplement — separate; bridges MRA to 62.
- Unused sick leave credit — 2,087 hrs = 1 year.
- COLAs — start at 62 with limited exceptions; diet-COLA above CPI 2%.
Related guides
Federal retirement, FERS retirement, CSRS, retirement age, FERS Annuity Supplement.
Sources
OPM Retirement Services, 5 U.S.C. Chapter 84.