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Pension Benefit Calculator

Estimate your defined benefit pension: monthly income, lump sum equivalent, and early retirement impact

State/local government general employee plan

Your gross annual salary before deductions

Total credited service years in this plan

Sector default Normal Retirement Age: 65

Expected annual salary increase until retirement

Used to estimate lifetime value and lump sum equivalent

Plan Parameters

The percentage of your Final Average Salary you earn per year of service. Sector range: 1.5% – 2.0%. Check your plan's Summary Plan Description for your specific rate.

Number of highest consecutive salary years averaged

Age for unreduced benefits per your plan

Annual penalty for each year before Normal Retirement Age

Annual cost-of-living adjustment in retirement

Joint & Survivor benefit for your spouse

Years of service needed to earn a permanent right to your pension. Most plans require 5 years; some public plans require up to 10.

Maximum salary counted toward your pension. Leave blank or 0 if no cap applies. Some public plans limit pensionable earnings. For example, California's Public Employees' Pension Reform Act (PEPRA) sets an annual cap that adjusts with inflation (currently around $160,000).

⚠️ This calculator provides estimates for educational purposes only. It is not financial, tax, or legal advice. Your actual results may vary.

How Defined Benefit Pensions Work

A defined benefit pension promises a specific monthly income in retirement, calculated using a formula based on your salary history, years of service, and a benefit multiplier set by your plan.

The standard formula is: Monthly Benefit = (Final Average Salary × Multiplier × Years of Service) ÷ 12

Final Average Salary is the average of your highest 3 or 5 consecutive years of earnings. Plans use this rather than your final salary to smooth out any anomalies.

Early retirement reduces your benefit because payments begin sooner and are expected to last longer. A typical reduction is 5–6% per year before your plan's Normal Retirement Age.

Joint & Survivor options reduce your monthly benefit during your lifetime so that your spouse continues receiving a portion after you pass. The more you protect your spouse, the larger the reduction.

Cost-of-living adjustments increase your benefit annually to help offset inflation. Most public sector plans provide a 2–3% annual increase. Most private sector plans do not include this protection.

Lump sum values and IRS segment rates: Many plans offer the option to take your entire pension as a single lump sum payment instead of monthly income. To calculate what that lump sum should be, plans use interest rates published monthly by the IRS called "segment rates." These rates are based on corporate bond yields and are split into three time periods: years 1–5, years 5–20, and years 20+. When these rates are higher, each future payment is worth less in today's dollars, resulting in a smaller lump sum offer. When rates are lower, lump sums are larger. This is why the timing of when you take a lump sum can significantly affect its value.

Private sector pensions are regulated by the Employee Retirement Income Security Act (ERISA), which sets minimum standards for vesting, funding, and fiduciary responsibility. Public sector pensions are governed by individual state laws rather than ERISA.

Frequently Asked Questions

Does my pension have a cost-of-living adjustment (COLA)?
Without a cost-of-living adjustment, a $4,000/month pension loses about half its purchasing power over 20 years at 3% inflation. With a 2% annual increase, the same pension grows to ~$5,900/month by year 20, partially offsetting inflation. Some public plans link increases to the Consumer Price Index (capped at 2-3%), while others use a fixed percentage. If your plan has no annual increase, this is a significant factor in the lump sum vs annuity decision because a lump sum invested for growth may better preserve purchasing power.
How is my pension benefit calculated?
The Final Average Salary is typically your highest 3 or 5 consecutive years of earnings, not your career average. The benefit multiplier is a percentage set by your plan, usually between 1.0% and 3.0% depending on your sector. Private corporate plans typically use 1.0-1.7%, public employee plans use 1.5-2.0%, teachers get 1.5-2.5%, and public safety (police/fire) often receive 2.0-3.0%. Your plan's Summary Plan Description will list your specific multiplier.
Should I take the pension lump sum or the monthly annuity?
Key factors to consider: (1) Longevity: if you live past the actuarial breakeven age, the annuity pays more total dollars. (2) Interest rates: when IRS segment rates are high (as in 2026), lump sums are relatively smaller, making the annuity more attractive per dollar spent. (3) Inflation: if your pension has no cost-of-living adjustment, inflation erodes purchasing power; a lump sum invested to beat inflation may preserve value better. (4) Survivor needs: a lump sum in an IRA passes to heirs; an annuity may stop at death (unless Joint & Survivor is elected). (5) Investment skill: can you realistically earn more than the implicit rate built into the annuity? The breakeven is roughly 5-6% annually.
What happens to my pension if I leave my employer after I am fully vested?
Once fully vested, your pension benefit belongs to you permanently. If you leave before retirement age, your benefit is "frozen" at the amount you earned through your departure date (based on your years of service and salary at that time). You then have two options: (1) wait until you reach the plan's Normal Retirement Age and collect the full amount, or (2) start collecting at the plan's early retirement age (often 55) with a reduced benefit. Your benefit will not continue to grow after you leave since no new years of service are being added, but you do not lose what you have already earned. Some plans also offer a lump sum payout when you separate from service.
What happens to my pension if I retire early?
The early retirement reduction exists because you'll collect benefits for more years than planned. The reduction makes the total expected payout roughly equivalent whether you retire early or wait. Important: this reduction is permanent and it doesn't go away when you reach Normal Retirement Age. Some plans offer unreduced benefits through "Rule of" provisions (e.g., your age plus years of service equals 80 or 85). Check your plan's Summary Plan Description for your specific early retirement provisions.
What is a joint and survivor annuity?
The Employee Retirement Income Security Act (ERISA) requires that married participants in private pension plans default to a 50% Joint and Survivor annuity unless the spouse signs a written waiver. The typical reductions are: 50% Joint and Survivor reduces your benefit by ~10% (spouse receives half after your death), 75% reduces by ~15%, and 100% reduces by ~18% (spouse receives your full benefit). The exact reduction depends on the ages of both you and your spouse. A much younger spouse means a larger reduction because the plan expects to pay longer.
When am I vested in my pension?
Vesting means you've earned a non-forfeitable right to your pension benefit. With cliff vesting, you own nothing until year 5, then own 100%. With graded vesting, you accumulate ownership gradually: 20% at year 3, 40% at year 4, 60% at year 5, 80% at year 6, and 100% at year 7. Once vested, you can leave the employer and still collect your pension at the plan's retirement age. Your own contributions (in public plans) are always immediately vested; it's the employer-funded benefit that vests on a schedule.
Who still gets a pension in the United States?
The shift away from pensions has been dramatic: private sector access dropped from 35% in the 1990s to 14% in 2025 (Bureau of Labor Statistics). Financial activities has the highest private-sector rate at 31%. Public sector pensions remain strong, with teachers, police, firefighters, and general government employees almost universally having defined benefit plans. Federal employees hired after 1987 have the Federal Employees Retirement System (1% multiplier + Thrift Savings Plan), while those before 1987 have the more generous Civil Service Retirement System. If you work for a private company, check if your plan is "frozen" (no new accrual) versus active.

Related Resources

Check current IRS pension plan funding segment rates

The IRS publishes monthly segment rates used to calculate minimum present values (lump sums) for defined benefit pensions under §417(e). For May 2026, the three spot segment rates are 4.42% (years 1-5), 5.47% (years 5-20), and 6.31% (years 20+). Higher rates produce smaller lump sums.

Learn about PBGC pension insurance coverage

The Pension Benefit Guaranty Corporation insures more than 23,500 private sector defined benefit pension plans covering about 30 million Americans. If your employer's plan fails, PBGC guarantees your pension up to a statutory maximum ($7,012.50/month at age 65 in 2026).

Read DOL FAQs about retirement plans and ERISA

The Department of Labor explains Employee Retirement Income Security Act (ERISA) requirements for employer retirement plans, including vesting schedules, benefit accrual, fiduciary duties, and participant rights. ERISA requires cliff vesting at 5 years or graded vesting over 3-7 years for private pension plans.