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Pension Lump Sum or Monthly Payments? How to Compare Them in 2026
A pension buyout offer and a monthly pension are the same promise priced two ways. Here's how to compare them: break-even age, the return the lump sum would need, survival odds, PBGC limits and taxes.
By Mindaugas Laucius · October 24, 2026 · Last reviewed October 24, 2026
TL;DR: A lump-sum offer and a monthly pension are the same promise, priced two ways. The offer wins if you'd invest it well and not live very long; the checks win the longer you live and the less you'd earn. Four numbers settle most of it: the break-even age, the return the lump sum would need to match the checks, your odds of living past break-even, and whether the checks keep up with inflation. Our free pension lump sum vs monthly calculator works them out for your offer.
If you have a defined-benefit pension, there's a good chance you'll see a form asking you to choose: a monthly check for life, or a single payment now. Employers offer lump sums because they get the liability off their books; you get control of the money. Neither side is doing the other a favor, and neither option is right for everyone. What follows is a way to put both in dollars before you sign.
How is a pension lump sum calculated?
A private plan converts your monthly benefit into a lump sum using interest rates and a mortality table set by the IRS — the minimum present value segment rates, published monthly. The lump sum is roughly what it would cost today to fund your checks for an average lifetime, discounted at those rates.
Two things follow. First, the offer isn't a gift or a trap on its face: it's a present value. Second, when interest rates rise, lump sums fall, and when rates fall, they rise. The same pension can be offered at noticeably different amounts a year apart, so check which month's rates your plan uses.
What is the break-even age?
Add up the monthly checks until they pass the lump sum. With $2,000 a month and a $300,000 offer:
$300,000 ÷ $2,000 = 150 months = 12½ years
If payments start at 65, the checks catch up at 77½. Live past that and the monthly option has paid you more in raw dollars.
That's the floor, not the answer, because it ignores what the lump sum could earn in the meantime. Invest the $300,000 at 5% a year and pay yourself the same $2,000 a month, and the money lasts to about 84 years and 5 months instead of 77½.
What return would the lump sum need to match the pension?
This is the more useful question. For a given lifespan, there's one yearly return at which the lump sum pays exactly the same checks. If you live longer, the pension is "worth" a higher return.
For the same $2,000 a month from 65, no cost-of-living increase, against $300,000:
| If you collect to | Return the lump sum would need |
|---|---|
| 84 (about average life expectancy at 65) | 5.1% a year |
| 85 | 5.3% |
| 90 | 6.6% |
| 95 | 7.3% |
Those are returns after fees, every year, with no bad sequence of markets along the way. A balanced portfolio has historically returned around 7% before inflation over long periods, but with real years of losses, and you'd carry that risk instead of the plan. Whether 5–7% is easy or hard depends on how you invest and how much volatility you can live with.
What are the odds you'll live past break-even?
The Social Security Administration's period life table (2023, used in the 2026 Trustees Report) gives a 65-year-old man about 18.1 more years and a woman about 20.7. Averaged, a 65-year-old has roughly a 76% chance of living past 77½, our break-even age.
Averages hide a lot. Your health, family history and income all shift your odds. For a married couple, what matters is often how long either of you lives — which is longer than either alone, and is why survivor options matter.
Does the pension keep up with inflation?
Many private pensions pay a fixed amount for life. At 2.5% inflation, $2,000 a month buys about $1,562 in today's money after 10 years and $1,221 after 20. A lump sum can be invested to keep pace with prices; a fixed check can't.
Public pensions often include a cost-of-living adjustment (COLA), but the rules vary: a fixed percentage, an inflation link with a cap, or increases approved year by year. Federal FERS COLAs usually start at 62 and are capped; military retired pay rises with the CPI. Our profession guides for teachers, police, firefighters, federal employees and the military cover the common rules.
What about your spouse?
A joint-and-survivor option keeps part of the pension paying after you die — 50%, 75% or 100% — for a lower monthly amount. For married participants in most private plans, it's the default, and choosing a lump sum or a single-life check needs your spouse's written consent (IRS: qualified joint and survivor annuity).
Compare the lump sum with the payment you'd actually choose. A survivor option usually pays over a longer combined lifetime, which raises the return the lump sum would need to match it. On the other side, whatever is left of a lump sum goes to your heirs; a single-life pension stops when you do.
Is the monthly pension insured?
Most private-sector pensions are insured by the Pension Benefit Guaranty Corporation if the plan fails, up to a maximum. For plans ending in 2026 that's $7,789.77 a month for payments starting at 65 and $6,153.92 at 62, less with a survivor option; the 2027 table raises the age-65 figure to $8,113.64. Government pensions — teachers, police, firefighters, federal and military — aren't PBGC-insured; they rest on the government behind them.
How is a lump sum taxed?
The IRS rules for pension income come down to this:
- Direct rollover to an IRA: no tax now; withdrawals are taxed as income later.
- Paid to you: the plan must withhold 20% for federal tax. You have 60 days to roll it over — making up the withheld 20% from other money — or the rest counts as income that year. A large lump sum in one year can also lift your Medicare premiums two years later.
- Monthly payments: taxed as income as you receive them.
State tax matters too: some states exempt part of pension income, part of IRA withdrawals, or both. See how each state taxes retirement income.
A worked example, start to finish
Say you're 64, offered $300,000 now or $2,000 a month from 65 with no COLA, and you'd expect about 5% a year after fees on the lump sum.
- Break-even: $300,000 ÷ $2,000 = 150 months → age 77½.
- With growth: at 5%, paying yourself $2,000 a month, the $300,000 lasts to about 84 and 5 months.
- Return needed: collecting to life expectancy (about 84) equals 5.1% a year; to 90, 6.6%; to 95, 7.3%.
- Odds: about 76% of 65-year-olds live past 77½.
- Spread to 95: at 5%, the lump sum could pay about $1,590 a month to 95, against $2,000 from the pension.
- Inflation: the $2,000 check is worth about $1,221 in today's money after 20 years.
On these numbers, keeping pace with the pension means earning around 5% a year after fees just to an average lifespan, more if you live longer, while the lump sum offers flexibility, an inheritance and protection from inflation if invested for it. Neither column wins on every line; the choice depends on your health, your other income, how you'd invest, and whether you'd rather own the risk or hand it to the plan.
How does it change your whole plan?
A pension decision doesn't happen in isolation: Social Security, your savings, your spending and market luck all interact. The free Yearfold calculator runs 10,000 simulated futures on your plan, and you can add your pension there to see what it does to your odds. To compare the two options on the same markets, inside your own plan, the Income planner in Yearfold Pro runs both side by side.
For a single offer, start with the pension lump sum vs monthly calculator: enter the monthly amount, the COLA, the offer and the return you'd expect, and it lays out every number above.