40-Year Pension Calculator
Pre-filled with 40 years of service — adjust salary, multiplier, and options to match your plan.
What 40 Years of Service Pays at Different Salaries
| Final Avg Salary | 1.0% Multiplier | 1.5% Multiplier | 2.0% Multiplier | 2.5% Multiplier |
|---|---|---|---|---|
| $40K | $1,333/mo | $2,000/mo | $2,667/mo | $3,333/mo |
| $50K | $1,667/mo | $2,500/mo | $3,333/mo | $4,167/mo |
| $60K | $2,000/mo | $3,000/mo | $4,000/mo | $5,000/mo |
| $70K | $2,333/mo | $3,500/mo | $4,667/mo | $5,833/mo |
| $80K ★ | $2,667/mo | $4,000/mo | $5,333/mo | $6,667/mo |
| $90K | $3,000/mo | $4,500/mo | $6,000/mo | $7,500/mo |
| $100K | $3,333/mo | $5,000/mo | $6,667/mo | $8,333/mo |
★ Near median public-sector final salary (BLS NCS). Formula: Years × Multiplier% × Final Avg Salary ÷ 12. Figures are pre-tax estimates.
How COLA Affects Your 40-Year Pension Over Time
Base monthly benefit: $5,200 at retirement. COLA compounds annually. Most public plans cap COLA at 2–3%. Federal FERS is 2.5% for 2026.
| Year in Retirement | No COLA | 1% COLA | 2% COLA | 2.5% COLA | 3% COLA |
|---|---|---|---|---|---|
| Year 1 | $5,200/mo | $5,200/mo | $5,200/mo | $5,200/mo | $5,200/mo |
| Year 5 | $5,200/mo | $5,411/mo | $5,629/mo | $5,740/mo | $5,853/mo |
| Year 10 | $5,200/mo | $5,687/mo | $6,214/mo | $6,494/mo | $6,785/mo |
| Year 15 | $5,200/mo | $5,977/mo | $6,861/mo | $7,347/mo | $7,865/mo |
| Year 20 | $5,200/mo | $6,282/mo | $7,575/mo | $8,313/mo | $9,118/mo |
Figures assume no additional service accrual. Federal FERS 2026 COLA: 2.5%. Most state plans cap at 2–3%.
What 40 Years Earns Across Major Pension Plans
| Plan Type | Multiplier | Final Salary | Monthly Benefit | Income Replacement | Note |
|---|---|---|---|---|---|
| FERS (Federal) | 1% | $75K | $2,500/mo | 40% | Supplement expected before age 62 |
| CSRS (Federal, legacy) | 2% | $75K | $5,000/mo | 80% | Higher rate, no SS contribution |
| Typical State Plan | 1.67% | $75K | $4,175/mo | 67% | 1.5–2.0% range average |
| Teacher (TRS avg) | 2.1% | $75K | $5,250/mo | 84% | 2.0–2.2% range, varies by state |
Multipliers vary by plan design. Always verify your plan's Summary Plan Description (SPD) for the exact figure.
What 40 Years of Defined Benefit Service Means
A 40-year career under a defined benefit plan is increasingly rare — and increasingly valuable. At standard multipliers, 40 years produces 80–100% income replacement, meaning your monthly pension check may exceed what you were spending each month while working (since payroll deductions, commuting costs, and savings contributions disappear at retirement).
The plan cap issue is real at 40 years. If your plan has a maximum benefit of 80% of final average salary, and your multiplier is 2.0%, you hit that ceiling at exactly 40 years. Staying beyond 40 in that plan adds no further pension accrual — though it may help your high-3 salary average if your final years are your highest-earning.
Tax planning becomes especially relevant at this income level. A $5,200/month pension ($62,400/year) may push you into a higher bracket when combined with Social Security. Roth conversions in the years before retirement — when pension income is zero — can lower lifetime tax liability significantly.
Survivor benefits at this benefit level represent a substantial financial decision. The difference between single-life and joint-and-50% survivor is often $300–$600/month. Model both scenarios carefully, factoring in life expectancy, spouse's own income, and other assets.
Income Replacement at a Glance
Monthly income comparison at 40 years, $78K salary, 2% multiplier.
Social Security average: $1,800/mo (SSA 2026). Combined pension + SS: $7,000/mo. Pension alone: 80% replacement.
Explore Other Service Lengths
Frequently Asked Questions: 40-Year Pension
With 40 years of service at a 2% multiplier and $78,000 final average salary, the formula yields approximately $5,200/month. At 1.0% (FERS standard), that's $2,600/month; at 2.0%, it's $5,200/month.
Most plans cap total benefit at 80–100% of final average salary, regardless of additional years.
Monthly Benefit = (40 × Multiplier% × Final Avg Salary) ÷ 12. Example: (40 × 2% × $78,000) ÷ 12 = $5,200/month.
At 2.5% annual COLA (2026 FERS rate), a $5,200 monthly benefit grows to approximately $8,521/month after 20 years in retirement.
It depends on whether your employer withheld Social Security taxes. FERS employees pay Social Security taxes and can collect both. CSRS and many state/local employees may face WEP or GPO reductions.
Most plans cap total benefit at 80–100% of final average salary, regardless of additional years. Most plans require a minimum combination of age and service. Check your Summary Plan Description for specific thresholds.
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.