US Federal Employees Retirement System (FERS) formula
The FERS Basic Annuity formula is: 1.0% × High-3 Average Salary × Years of Service (or 1.1% if retiring at age 62 or older with 20 or more years of service).
Federal retirement also includes the Thrift Savings Plan (TSP) with 5% government matching and Social Security benefits.
Worked example: FERS basic annuity
A federal employee retiring at age 62 with 25 years of service and a High-3 average salary of $90,000 qualifies for the 1.1% multiplier: 1.1% × 25 × $90,000 = $24,750 per year ($2,063 per month) in guaranteed FERS annuity.
Inputs for the us civil service pension calculator
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High-3 Salary & Service
Enter highest 3 consecutive earning years average basic pay.
CALCULATOR QUESTIONS
US civil service pension calculator questions
What is the FERS Annuity Supplement?
The FERS Supplement bridges the gap for federal employees who retire before age 62 with full eligibility until they qualify for Social Security at 62.