Retirement calculator

Free pension vs lump sum payout calculator

Decide whether to take a monthly pension or a one-time lump sum. Enter both offers and a discount rate, and this calculator computes the present value of the payments and names the better deal — with the break-even rate — updated live, as you type.

On this page10 sections

InputsLive

Compounding

Initial principal

Monthly contribution

$/mo

Annual interest rate

Years

yrs

Result

Future value

$37,405

Interest: $15,405 · Invested: $22,000

Future value$37,405

Interest earned$15,405

Total invested$22,000

Growth factor1.7×

Hypothetical projection. Excludes taxes, inflation, and fees. Actual investment returns vary.

Results are estimates. Consult a professional.

Overview

Pension vs lump sum: what this calculator decides

When you retire, many defined-benefit plans offer a choice: take a monthly pension for life, or take a one-time lump sum instead. This pension vs lump sum payout calculator settles the financial side of that choice by computing the present value of the monthly payments and comparing it to the lump sum on the table. Whichever is larger is the better deal in pure dollar terms.

The comparison hinges on one number you control: the discount rate. The pension is a stream of future payments, and the lump sum is money in hand today. To compare them fairly you have to translate the future payments into today's dollars — and the rate you use to do that translation decides which side wins.

The single cash payment the plan offers instead of monthly income.

What the stream of monthly payments is worth today, after discounting future dollars back to the present.

The annual return you assume you could earn on the lump sum if you took it. It is the lever that decides the comparison.

The discount rate at which the pension's present value exactly equals the lump sum offer.

Formula

How the comparison is calculated

The calculator discounts the monthly pension into a present value using the ordinary-annuity present-value formula, then compares it to the lump sum:

PV of pension = monthly × [1 − (1 + r)^−n] / r

r = discount rate ÷ 12, n = years receiving × 12

take the pension if PV ≥ lump sum, else take the lump sum

The discount rate is everything. A high rate assumes you can invest the lump sum well, which shrinks the present value of the pension and favors the lump sum. A low rate assumes modest returns, which inflates the pension's present value and favors keeping the income. The crossover point is the break-even rate.

Worked example

A worked example: $500,000 lump sum vs $3,000 a month

Example: $500,000 lump sum or $3,000/month for 25 years

Raj's plan offers a $500,000 lump sum or a $3,000 monthly pension he expects to collect for 25 years. He believes he could earn 5% a year by investing the lump sum, so he uses 5% as the discount rate. These are the calculator's default inputs.

Step 1 — Set the monthly rate and payment count

Monthly discount rate = 5% ÷ 12 = 0.0041667. Payments = 25 × 12 = 300.

Step 2 — Discount the pension to present value

PV = 3,000 × [1 − 1.0041667^−300] / 0.0041667

PV = 3,000 × 171.060

PV = 513,180.14

Step 3 — Compare

Pension wins by $13,180

The pension's present value of $513,180 is larger than the $500,000 lump sum, so at a 5% discount rate the monthly income is the better financial deal — by about $13,180 in today's dollars.

The verdict can flip with the rate. Raise the discount rate to about 5.26% and the pension's present value falls to roughly $500,000 — the break-even point. Above that rate the lump sum wins; below it the pension wins.

Reference

How the discount rate flips the decision

Holding the offer fixed at a $500,000 lump sum versus $3,000/month for 25 years, the table shows how the pension's present value — and the winner — change with the discount rate. All figures are computed by this calculator.

Discount rate	PV of pension	Winner
3%	$632,629	Pension
4%	$568,357	Pension
5%	$513,180	Pension
6%	$465,621	Lump sum
7%	$424,461	Lump sum

$500,000 lump sum vs $3,000/mo for 25 years. Break-even is near 5.26%. Figures computed by this calculator.

The honest discount rate is the return you could realistically and safely earn — not the best year your portfolio ever had. Many advisers anchor it to high-grade bond or annuity yields, because the pension itself is a low-risk, guaranteed stream.

Judgment

What the present-value math leaves out

The calculator answers the dollar question, but the real decision involves risks the formula cannot price:

Longevity risk. The pension pays for life; the comparison fixes a number of years. Live longer than assumed and the pension's true value rises well past the lump sum.
Inflation. An un-indexed pension loses buying power over decades, while a lump sum can be invested in assets that grow — a point in the lump sum's favor the level-payment math misses.
Investment and behavioral risk. A lump sum only beats the pension if you actually earn the assumed rate without spending the principal. The pension removes that risk entirely.
Survivor needs. A joint-and-survivor pension keeps paying a spouse; a lump sum leaves whatever is left to heirs. Which matters more depends on your family.

Guarantees & taxes

PBGC protection and the tax trap on a lump sum

Two outside factors should weigh on the choice. First, most private pensions are insured by the Pension Benefit Guaranty Corporation (PBGC) up to a legal maximum — so the income is backed even if the plan fails, which strengthens the case for keeping it. Second, a lump sum is a taxable event unless you roll it directly into an IRA: take it as cash and you can owe ordinary income tax on the whole amount, plus the 10% early-withdrawal penalty if you are under 59½.

Do a direct rollover. Moving a lump sum straight into an IRA defers the tax and avoids the 10% penalty.
Watch the 20% withholding. A lump sum paid to you (not rolled over) is generally subject to mandatory 20% federal withholding.
Government and church plans are not PBGC-insured and follow different rules.

PBGC — Your guaranteed pension (single-employer plan guarantees).FINRA — Annuities (income payouts, fees, and trade-offs to weigh before converting savings to income).IRS — Topic no. 412, Lump-sum distributions and rollovers.

Questions

Frequently asked questions about the free pension vs lump sum payout calculator

A pension vs lump sum payout calculator is a free online tool that helps you compare PV of pension payments against a lump-sum option. Take the lump sum if PV of payments < lump sum (after factoring discount rate). It runs entirely in your browser with instant results and no sign-up.

Compare the lump sum to the present value of the monthly payments at a realistic discount rate. If the lump sum is larger, it is the better deal in dollar terms; if the present value of the pension is larger, the income wins. A $500,000 lump sum versus $3,000 a month for 25 years, discounted at 5%, gives the pension a present value of about $513,180 — so the pension wins by roughly $13,180. Then weigh longevity, inflation, taxes, and survivor needs.

Use PV = monthly × [1 − (1 + r)^−n] / r, where monthly is the pension payment, r is the discount rate divided by 12, and n is the years times 12. The discount rate is the return you assume you could earn on a lump sum instead — it is the single number that decides the comparison.

Use the return you could realistically and safely earn, not your best-ever year. Because a pension is a low-risk guaranteed stream, many advisers anchor the rate to high-grade bond or annuity yields. A higher rate favors the lump sum; a lower rate favors keeping the pension. The crossover is the break-even rate — about 5.26% in the example above.

A lump sum is taxable as ordinary income unless you roll it directly into an IRA, and taking it as cash is generally subject to mandatory 20% federal withholding — plus a 10% penalty if you are under 59½. A direct rollover defers the tax and avoids the penalty. See IRS Topic No. 412.

It prices the dollars but not the risks: longevity (the pension pays for life, the calculation assumes a fixed number of years), inflation (an un-indexed pension loses buying power), investment and behavioral risk (a lump sum only wins if you actually earn the assumed return without spending it), and survivor needs. Most private pensions are also PBGC-insured, which strengthens the case for keeping the income.

About

About this pension vs lump sum payout calculator

This pension vs lump sum payout calculator runs entirely in your browser — your figures never leave your device. It discounts the monthly pension into a present value using PV = monthly × [1 − (1 + r)^−n] / r at the discount rate you set, then compares it to the lump sum and names the larger one, updating instantly as you type.

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