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Pension Payout Calculator
Take the lump sum or keep the monthly checks? This pension calculator discounts every future payment to present value, sets it against the lump-sum offer and hands you a clear verdict with the break-even age attached.
See how this works on a $400,000 lump-sum offer — 3 real examples
Lump sum vs monthly pension
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Pension present value
$0
Lump-sum offer
$0
Gap (pension − lump)
$0
Break-even age
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Cumulative pension checks vs the lump sum
Total pension dollars collected over time against the flat lump-sum line — where they cross is the break-even point.
Year-by-year pension payoutMonthly check, annual total and cumulative dollars collected
| Year | Age | Monthly check | Annual total | Cumulative collected |
|---|
How we value your pension against the lump sum
The heart of the decision is the present value of the monthly pension — what all those future checks are worth in today’s dollars. Rather than a level-annuity shortcut, each month’s check is built and discounted explicitly, with the cost-of-living adjustment stepped up once per year:
PV = Σ checkm / (1 + r/12)m
checkm = monthly × (1 + COLA)⌊(m−1)/12⌋
where r is your annual discount rate (the return you could earn on the lump sum) andm counts the months of payments. That present value is compared directly to the lump-sum offer: if it’s higher, the monthly pension is the richer deal today; if it’s lower, the lump sum wins. The gap is simply the pension’s present value minus the lump sum.
The break-even age answers a different question: how long you must keep collecting before the raw (COLA-grown) checks add up to the lump sum you gave up. It’s the crossover marked on the chart. And here’s the honest part — a higher discount rate favors the lump sum. Money invested today compounds, so the more you assume you can earn, the less a stream of future checks is worth now. The break-even discount rate reported above is the exact rate at which the two offers are worth the same; assume you can beat it and the lump sum pulls ahead.
A joint-and-survivor election adds a second stream: the chosen survivor percentage of the check, continuing for the survivor years you set beyond the primary period, discounted from the end of that period and added on to give the joint-survivor present value. All figures are pre-tax and recalculate the instant you move a slider — nothing is rounded before the final display.
One pension offer, three ways to see it
A $2,500 monthly check against a $400,000 lump sum, over 25 years of payments. The verdict turns on the assumptions, not the offer.
The verdict at a 5% return
pension present value$520,850
- Discounted at 5%, the checks are worth $120,850 more than the cash — the pension wins.
- Cumulative checks pass the $400,000 lump at age 77, twelve years in.
- The two offers trade places only if the lump could earn above 7.6% a year.
At a conservative return, the stream of checks is the richer offer in today's dollars.
Load this example (opens in a new tab)The same offer at an 8% return
pension present value$383,624
- Three extra points of assumed return shave $137,226 off what the checks are worth today.
- The verdict flips: the lump sum now beats the pension by $16,376 in present value.
- Nothing about the pension changed — only the return its rival money is assumed to earn.
Whoever names the discount rate names the winner; 7.6% is where these two offers tie.
Load this example (opens in a new tab)The fixed check: no cost-of-living raise
pension present value$427,650
- Freezing the check strips $93,200 of present value from the default pension.
- The pension still edges the lump sum, but the cushion thins to $27,650.
- Break-even slides a year later, to age 78, and the tie rate drops to 5.7%.
An annual 2% raise turns out to be worth $93,200 today — the quietest input on the page.
Load this example (opens in a new tab)Illustrations only, not financial advice. Your own rate, taxes and insurance will differ — check with a qualified financial advisor before acting on any of this.
Lump sum or monthly pension, in plain English
- Compare present values, not raw totals. Adding up 25 years of checks overstates the pension — discounting each one to today is the only apples-to-apples way to weigh it against the lump sum.
- The discount rate decides it. Confident you can earn 7–8% on the invested lump? The lump sum usually wins. Prefer safety and a guaranteed check? The pension's present value climbs as your assumed return falls.
- Break-even age is a longevity bet. Expect to outlive the break-even age and the monthly pension pays off; family health history that points the other way argues for the lump sum.
- COLA is worth real money. A pension that rises with inflation is far more valuable than a fixed one — check whether your plan offers a cost-of-living adjustment before comparing.
- Don't forget a spouse. A joint-and-survivor election protects a partner after you're gone; the survivor present value shows what that protection is worth today.
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Frequently asked questions
Should I take a lump sum or a monthly pension?
It comes down to which is worth more today. This lump sum vs monthly pension calculator discounts every future check back to a present value at the return you could earn on the money, then compares it to the lump-sum offer. If the pension’s present value is higher, the monthly pension wins; if the lump sum is higher, taking the cash and investing it wins. Your health, other income, and how much you value a guaranteed check for life all matter too.
How do you value a monthly pension?
You find its present value — what the whole stream of future checks is worth in today’s dollars. Each monthly payment is discounted back at your assumed investment return, and any cost-of-living adjustment is layered on year by year before discounting. Add them all up and you get a single number you can hold next to the lump-sum offer. A $2,500-a-month pension for 25 years is worth far less than the naive $750,000 of raw checks once discounting is applied.
What is the break-even age on a pension?
It’s the age at which the cumulative pension checks you’ve collected finally add up to the lump sum you turned down. Live past it and the monthly pension comes out ahead on raw dollars; pass away before it and the lump sum would have been more. This monthly pension payout calculator marks the break-even age right on the cumulative-payout chart so you can weigh it against your own life expectancy.
What discount rate should I use?
Use the return you could realistically earn on the lump sum at similar risk — often 4–6% for a conservative retirement portfolio. The discount rate is the single most powerful input here: a higher rate shrinks the pension’s present value and tilts the decision toward taking the lump sum, because your invested cash could grow faster. Drag the discount-rate slider to see exactly where the two offers break even.
How does a cost-of-living adjustment (COLA) affect the decision?
A COLA raises your monthly check every year to keep pace with inflation, which meaningfully increases the pension’s present value and makes the monthly option more attractive. Many private pensions offer no COLA at all, so their fixed checks lose purchasing power over time. Set the COLA slider to match your plan — even 2% a year adds up over a long retirement.
What is a joint-and-survivor pension?
A joint-and-survivor election continues part of your pension — commonly 50%, 75%, or 100% — to your spouse after you die, usually in exchange for a somewhat smaller monthly check while you’re both alive. This pension value calculator lets you add a survivor percentage and the years it would keep paying, then folds that extra stream into a joint-survivor present value so you can see what the protection is worth today.
Is my pension income taxable?
Most pension income is taxable as ordinary income, and a lump sum rolled into an IRA is taxed as you withdraw it. This calculator compares the pre-tax value of each option and does not compute tax liability — the tax treatment is often similar on both sides, but check with a tax professional for your situation before deciding.
Disclaimer: these calculators are educational tools, not financial advice. They model your inputs with published formulas, but they cannot know your full situation — for decisions with real stakes, talk to a qualified professional. Formulas and defaults last reviewed .