FERS Retirement Calculator
FERS basic annuity = High-3 × years × 1.0% (or 1.1% if 62+ with 20+ years). Calculator runs that formula instantly.
Reviewed by Jonathan Teplitsky · Updated June 2026
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 ($1,875/mo). Plus FERS Annuity Supplement.
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.