Federal Benefits Tool

FERS Annuity Calculator - Federal Employee Retirement Calculator

Free FERS annuity calculator & federal employee retirement calculator. Calculate FERS pension, special retirement supplement, high-3 salary benefits & lifetime value. Our calculator uses OPM formulas to estimate your Federal Employees Retirement System annuity based on years of service, high-3 average salary, and retirement age.

Last updated: January 10, 2025

Official FERS annuity formula (1% or 1.1%)
Special Retirement Supplement calculation
Lifetime benefit value projection

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FERS Annuity Calculator
Calculate your Federal Employees Retirement System annuity benefits

Include all federal service time

Average of highest 3 consecutive years of basic pay

Your age when you plan to retire

Available if retiring before age 62 with 30+ years

Results

Monthly FERS AnnuityPrimary Benefit

$2,750.00

$33,000 annually

Replacement Rate

33.0%

Lifetime Value

$0.76M

Total First Year Income

$33,000

Includes annuity

Important Notes

  • • FERS annuity is based on 1.1% per year of service
  • • COLA adjustments begin at age 62 for regular retirees
  • • Subject to federal income tax and possibly state tax
  • • Does not include TSP distributions or Social Security

FERS Retirement Calculator Features & Types

FERS Annuity Calculator
Calculate basic FERS pension benefits and monthly payments

Formula

1% or 1.1% × Years × High-3

Core FERS pension calculation based on creditable service

High-3 Salary Calculator
Determine your highest 3 consecutive years average salary

Average period

36 Consecutive Months

Critical factor in FERS annuity calculation

FERS Supplement Calculator
Calculate Special Retirement Supplement until age 62

Eligibility

30+ Years, Before 62

Temporary benefit approximating Social Security

Federal Pension Calculator
Complete federal retirement income projection

Components

FERS + TSP + SS

Three-tier retirement system analysis

OPM Retirement Calculator
Official Office of Personnel Management formula

Standard

OPM Certified

Based on official government retirement formulas

FERS Eligibility Calculator
Determine retirement eligibility and timing options

Options

Immediate, Early, Deferred

Analyze different retirement timing scenarios

Quick Example Result

30 years of service, $100,000 high-3 salary, retiring at age 62:

Monthly

$2,750

Annual

$33,000

Replacement

33%

Lifetime

$0.76M

How Our FERS Annuity Calculator Works

Our FERS annuity calculator uses the official Office of Personnel Management (OPM) formula to estimate your federal retirement benefits. The calculation multiplies your creditable years of service by your high-3 average salary and the applicable percentage multiplier, providing accurate projections of your monthly and annual FERS pension payments.

FERS Annuity Calculation Formula

Standard Formula: 1% × High-3 Salary × Years of Service
Enhanced Formula: 1.1% × High-3 Salary × Years of Service
Enhanced if: Age 62+ with 20+ years of service
Example: $100,000 × 30 years × 1.1% = $33,000/year

The enhanced 1.1% multiplier provides a 10% higher annuity for eligible retirees. This incentivizes federal employees to work longer and retire at full retirement age. The high-3 salary is your average basic pay during any 3 consecutive years of service, typically your final three years.

📊 FERS Benefit Breakdown

Visualization of FERS three-tier retirement system components

FERS Special Retirement Supplement

The Special Retirement Supplement (SRS) is a unique FERS benefit that bridges the gap between retirement and Social Security eligibility at age 62. It approximates the Social Security benefit earned during your federal service years. To qualify, you must retire under immediate retirement provisions before age 62 with at least 30 years of service, or at your Minimum Retirement Age with 30 years.

  • SRS calculation: (Estimated SS benefit × Years of Federal Service) ÷ 40
  • Paid monthly from retirement date until age 62
  • Subject to earnings test (similar to Social Security)
  • Taxable income, reported on Form 1099-R
  • Not available for deferred retirement or MRA+10 retirement
  • Ends automatically when you turn 62, regardless of SS claiming decision

Sources & References

  • U.S. Office of Personnel Management (OPM) - FERS InformationOfficial source for FERS annuity calculations and retirement rules
  • 5 U.S.C. Chapter 84 - Federal Employees' Retirement SystemLegal foundation for FERS benefits and calculations
  • OPM FERS Handbook - Comprehensive Guide to FERS BenefitsDetailed explanation of FERS annuity, supplement, and survivor benefits

Planning comprehensive retirement? Check out our retirement calculator and 401k loan calculator.

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FERS Annuity Calculator Examples

FERS Annuity Calculator Example
Calculate retirement benefits for 30 years of service with $100,000 high-3 salary

Employee Profile:

  • Years of Service: 30 years
  • High-3 Salary: $100,000
  • Retirement Age: 62
  • Retirement Type: Regular
  • Multiplier: 1.1% (age 62+ with 20+ years)

Calculation Steps:

  1. Apply enhanced formula: 1.1% (age 62+ with 20+ years)
  2. Calculate: $100,000 × 30 × 1.1% = $33,000
  3. Annual annuity: $33,000
  4. Monthly annuity: $33,000 ÷ 12 = $2,750
  5. Replacement rate: $33,000 ÷ $100,000 = 33%

Result: $2,750/month ($33,000/year) FERS annuity

33% salary replacement from pension alone. Add Social Security (~35%) and TSP for complete retirement income.

Early Retirement Example

25 years, $80,000 high-3, age 60

$20,000/year (1% × 25 × $80,000)

With Supplement Example

30 years, age 56 (MRA+30)

Plus ~$1,500/mo until age 62

Frequently Asked Questions

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