Pension Calculator

This calculator treats the amount you enter as a fixed pool that is paid out in equal monthly installments over the selected number of years. It uses the level-payment annuity formula M = P × i(1+i)^n ÷ ((1+i)^n − 1), where P is the starting balance, i is the annual rate divided by 1,200, and n is years × 12. At a zero rate, it divides the balance evenly across the months because the annuity formula’s denominator would otherwise be zero. The total shown is the modeled payment multiplied by the number of payments. This is not a plan administrator’s pension quote. A traditional pension may promise a lifetime benefit based on salary and service rather than giving you an account balance to amortize. A defined-contribution balance may be invested and withdrawn under a separate policy. An insurer’s annuity quote can use mortality, reserves, interest assumptions, and contract guarantees. Confirm what your lump sum represents before treating this result as an available retirement income. The payment form matters. A single-life annuity generally pays more each month because it ends at the participant’s death. A joint-and-survivor option generally pays less initially because it continues, in whole or in part, for a spouse after the participant dies. Period-certain guarantees, refund features, and beneficiary provisions can change the amount further. This calculator does not model mortality, survivor reductions, beneficiary payments, or an insurer’s premium calculation. Read the plan’s election statement and compare equivalent options rather than comparing only the largest monthly number. Cost-of-living adjustments are another important exclusion. A level payment stays constant in nominal dollars in this model. A COLA can increase payments over time, but the initial payment may be lower and the adjustment may be capped, delayed, or tied to a specified index. Taxes and withholding are also excluded. The IRS explains pension and annuity taxation in Publication 575; actual taxable amounts depend on contributions, basis, plan type, and the distribution election. Use this page to understand the tradeoff between balance, assumed return, and payout period. A longer period lowers the modeled payment but increases the number of payments and exposes the plan to inflation and longevity risk. A higher assumed return increases the level payment mathematically, but it is not guaranteed and can make the projection too optimistic. Compare it with the retirement calculator, annuity calculator, and 401k calculator when you need contributions, investment growth, or a different payout structure. Common mistakes include treating a lump-sum value as a guaranteed pension, ignoring survivor benefits, assuming a COLA is included, and using a nominal return as a promise. Ask the plan administrator for the official single-life and joint-and-survivor figures, review tax treatment, and save the assumptions used here. Compare the value of a guaranteed payment with the flexibility and investment risk of keeping a lump sum, and consider how inflation changes a level nominal payment over retirement. Also check whether the plan is covered by PBGC, whether payments are insured or backed by an employer, and whether a rollover changes tax timing.