$100K Salary Pension Calculator
Pre-filled with $100,000 final salary — adjust years of service, multiplier, and options.
What a $100K Salary Pension Pays at Every Service Length
| Years of Service | Monthly Benefit | Annual Benefit | Income Replacement | Lifetime Value | Details |
|---|---|---|---|---|---|
| 10 years | $1,250/mo | $15,000/yr | 15% | $375,000 | Full analysis → |
| 15 years | $1,875/mo | $22,500/yr | 22% | $562,500 | Full analysis → |
| 20 years | $2,500/mo | $30,000/yr | 30% | $750,000 | Full analysis → |
| 25 years | $3,125/mo | $37,500/yr | 38% | $937,500 | Full analysis → |
| 30 years | $3,750/mo | $45,000/yr | 45% | $1,125,000 | Full analysis → |
| 35 years | $4,375/mo | $52,500/yr | 53% | $1,312,500 | Full analysis → |
| 40 years | $5,000/mo | $60,000/yr | 60% | $1,500,000 | Full analysis → |
At 1.5% multiplier and $100,000 final average salary. Lifetime value calculated to age 85 from retirement at 60. Pre-tax estimates.
How COLA Affects a $100K Salary Pension Over Time
Base: $3,125/month at retirement (25 years, 1.5% multiplier). COLA compounds annually.
| Year in Retirement | No COLA | 1% COLA | 2% COLA | 2.5% COLA | 3% COLA |
|---|---|---|---|---|---|
| Year 1 | $3,125/mo | $3,125/mo | $3,125/mo | $3,125/mo | $3,125/mo |
| Year 5 | $3,125/mo | $3,252/mo | $3,383/mo | $3,449/mo | $3,517/mo |
| Year 10 | $3,125/mo | $3,418/mo | $3,735/mo | $3,903/mo | $4,077/mo |
| Year 15 | $3,125/mo | $3,592/mo | $4,123/mo | $4,416/mo | $4,727/mo |
| Year 20 | $3,125/mo | $3,775/mo | $4,553/mo | $4,996/mo | $5,480/mo |
Most public plans cap COLA at 2–3%. Federal FERS 2026 COLA: 2.5%.
What a $100K Final Salary Means for Your Pension
A $100,000 final average salary places you in the above-median range for public-sector defined benefit plan participants (BLS National Compensation Survey 2024). Your benefit depends almost entirely on years of service and your plan's multiplier — the salary figure itself is fixed.
The most important variable at this income level is whether your plan uses a high-3 or high-5 salary average. A high-3 calculation uses your three highest consecutive earning years. Strategic timing of raises or overtime in those final years can meaningfully increase your final average salary — and therefore your lifetime pension income.
At $100K, Social Security coordination is also worth modeling carefully. If you're in a FERS-covered position, your combined pension and Social Security at 62 will likely exceed 70% income replacement. If you're in a non-SS-covered position (CSRS, some state/local), your pension needs to carry more of the retirement income load.
Related: Compare by Service Length
Frequently Asked Questions: $100K Salary Pension
At a $100,000 final average salary, a 25-year pension at 1.5% multiplier yields approximately $3,125/month ($38K/year). The exact figure depends on your years of service and your plan's multiplier. Use the tables above or the calculator at PensionCalculator.info for a precise estimate.
Most public plans define a "full" pension as 30 years of service, which at $100K and 1.5% yields $3,750/month. Some plans offer full eligibility at 25 years or age 55+. Check your Summary Plan Description for specific thresholds.
Monthly Benefit = (Years of Service × Multiplier% × $100,000) ÷ 12. At 25 years and 1.5%: (25 × 0.015 × $100,000) ÷ 12 = $3,125/month. Final Average Salary is typically your highest 3- or 5-year average, not your final paycheck.
At 2.5% annual COLA (2026 FERS rate), a $3,125/month benefit at retirement grows to approximately $5,121/month after 20 years in retirement — a 60% nominal increase.
It depends on whether your employer withheld Social Security taxes. FERS employees pay into Social Security and can collect both. CSRS and many state/local employees may face Windfall Elimination Provision (WEP) or Government Pension Offset (GPO) reductions that lower their Social Security benefit.
Methodology & Sources ↓
Lifetime Value = Monthly Benefit × 12 × (Life Expectancy − Retirement Age)
COLA Year N = Base Benefit × (1 + COLA Rate)^N
Sources: Office of Personnel Management (OPM) — FERS/CSRS benefit formulas; Bureau of Labor Statistics National Compensation Survey — plan multipliers and coverage rates; Social Security Administration actuarial tables — life expectancy projections; BLS CPI-W data — COLA rate history.
All calculations are pre-tax estimates based on the standard defined benefit formula. Actual benefits depend on your specific plan's rules, vesting schedule, and final average salary calculation method (high-3, high-5, or career average). This tool is for educational purposes only and does not constitute financial or legal advice.