This pension lump sum vs annuity calculator weighs a one-time payment from your plan against the monthly pension for life you’d give up to get it. Enter the lump sum offer, the single-life check, your age, when checks begin, and the return you expect on invested cash. It returns the rate the checks pay you, your break-even age, and the income the cash could fund instead.
The defaults describe a 65-year-old man offered $280,000 or $2,000 a month. Counted to his SSA average age (83 years, 1 month), the 217 checks total $434,000 and pay an implied 5.43% a year. At a 5% return the checks win by a hair: invested, the lump sum could fund $1,938 a month over the same span.
Pension Lump Sum vs Annuity Calculator
Weigh a one-time cash offer against lifetime monthly checks: the rate the checks pay you, the break-even age, the income the cash could fund at your return, and a check against IRS 417(e) segment rates.
Compares a lump sum offer with monthly checks that start at the age you enter, counted to the SSA average age or an age you pick (SSA Period Life Table 2023). Segment-rate figures use the IRS July 2026 rates (Notice 2026-51) with SSA survival odds, so they approximate, and will not equal, a plan's 417(e) figure. PBGC limits are the 2026 table. Taxes, survivor forms, and investment swings are not modeled. Educational only, not financial, legal, or tax advice.
Payout Options on Your Election Form
A pension buyout is an offer from a defined benefit plan to replace lifetime payments with one check. Your election packet lists the payout options; they’re the inputs:
- The lump sum offer. Before tax.
- The monthly check. The straight-life figure the pension plan formula produces, typically final average salary times a percentage for each year of service.
- Start age. A retiree usually enters today’s age. Former workers offered a pension buyout often have checks due at 65.
- Investment return. What the cash would earn after fees.
- Horizon. Your SSA average age, or any age.
A monthly payment calculator handles loans. Use this pension calculator to compare two offers and see which assumptions flip the answer. To value the stream alone, try the pension present value calculator.
The Implied Rate Inside the Annuity Payout
The implied rate is the yearly return that makes the lump sum today equal to the monthly annuity payments you’d receive, in effect the interest the plan pays you for leaving the money in. If you’d need 5.43% on invested cash to match a $2,000 monthly payout to 83, and you expect 5%, each annuity payment is the better deal. Expect 6% and the cash wins: it could pay $2,082 a month.
The catch: nobody knows their age at death, and the rate swings with it.
| Checks run to age | Implied rate | Cash could fund at 5% |
|---|---|---|
| 80 | 3.59% | $2,189 a month |
| 83 years, 1 month (SSA average) | 5.43% | $1,938 a month |
| 85 | 6.19% | $1,823 a month |
| 90 | 7.43% | $1,612 a month |
| 95 | 8.07% | $1,478 a month |
Die at 80 and taking a lump sum was better. Live to 95 and the plan paid 8% a year, guaranteed.
Break-Even Age and the Odds of Reaching It
Break-even age is when checks received catch up to the offer. Skipping interest, $280,000 divided by $2,000 is 140 checks, so the checks pull even at 76 years, 7 months.
That flatters the checks: invested cash keeps growing, so its future value is the real yardstick. Counting the return, break-even moves to 82 years, 2 months. The SSA Period Life Table 2023 gives a 65-year-old man a 56.3% chance of living that long. At a 7% return it slides to 87 years, 10 months, with 33.0% odds.
Weight every check by the chance you’re alive to cash it and the implied rate falls to 4.57%, just under 5%. The default is close to a coin flip. A woman with the same offer does better receiving monthly payments: her average age is 85 years, 8 months, the implied rate is 6.41%, and her odds of reaching break-even are 67.0%. Our life expectancy calculator uses the same SSA table.
What Monthly Income Could the Lump Sum Fund?
Investing the lump sum makes you the pension fund. The calculator finds the fixed monthly withdrawal that runs the account to zero on the same dates at your return: regular payments over a set period, where the pension runs for life. At 5%, $280,000 produces $1,938 of monthly income to 83. At 7%, $2,230.
Two gaps matter more than the dollars. The invested lump sum stops when it runs out; a lifetime pension doesn’t. And returns aren’t smooth: a bad first decade can cut sustainable withdrawals well below the level-return figure, which the safe withdrawal rate calculator tests. Money left at death goes to heirs; checks stop unless you chose a survivor form.
Is the Offer Fair? The IRS 417(e) Floor
Under Internal Revenue Code section 417(e)(3), a plan can’t pay a lump sum payout worth less than the present value of your benefit at IRS segment rates and the IRS mortality table. Higher rates shrink offers.
The calculator approximates that test with the July 2026 rates (4.62%, 5.62%, 6.51%, IRS Notice 2026-51) and SSA survival odds. The default offer is 109.3% of the resulting $256,176. Plans use their own lookback month and the IRS unisex table, so near or above 100% is normal. Well under? Ask the plan for its math.
Lump Sum or Monthly: Factors Beyond the Math
The Pension Benefit Guaranty Corporation (PBGC), the federal insurer of private pensions, lists what to weigh when choosing between a lump sum and checks:
- Health. Yours and your spouse’s. Poor health shortens the horizon and favors cash.
- Investment skill. Managing $280,000 at 88 is a different job than at 65.
- Other guaranteed income. Social Security and any other pension income. If they cover basic bills, cash adds flexibility.
- Debt and spending. A mortgage or large near-term cost may argue for the lump sum option.
- A raise. A cost-of-living adjustment (COLA) changes everything. With a 2% COLA, the default implied rate jumps to 7.41% and the offer drops to 93.2% of the segment-rate value.
Some plans allow a split, part lump sum and monthly checks for the rest. These are big financial decisions, and usually permanent.
Rolling the Cash Into an IRA Without 20% Withheld
A check paid to you carries mandatory 20% withholding, even if you plan to roll it over. On $280,000 that’s $56,000, which you must replace from other money to roll the full amount within 60 days; whatever isn’t rolled over is taxable that year.
A direct rollover avoids that. Ask the plan to send the lump sum into an IRA or a new employer’s retirement plan, payable to the receiving account, and nothing is withheld; the money stays retirement savings, taxed when you withdraw. Cash you keep is ordinary income, and under 59 1/2 it can add a 10% additional tax unless an exception applies, such as leaving the employer after 55 (see the rule of 55). Pension payments are taxed as ordinary income as they arrive, per IRS Publication 575.
Married? Spousal Consent Comes First
A defined benefit plan must pay a married participant a qualified joint and survivor annuity (QJSA) unless both spouses waive it in writing. The QJSA continues at least 50%, and up to 100%, of your check to a surviving spouse. Per the Department of Labor, your spouse signs a written consent, witnessed by a notary or plan representative, acknowledging that payments end at your death.
That rule covers a lump sum too, since the cash replaces a survivor benefit that was your spouse’s by default. If you’d pick the joint form, compare the offer with the lower joint check, not the single-life figure.
Guaranteed Income for Life and PBGC Insurance
The PBGC guarantees private defined benefit pensions, up to a limit, if a plan fails. For single-employer plans ending in 2026, the cap at 65 is $7,789.77 a month, straight life; the calculator shows the cap at your start age. Most pension annuity amounts sit well under it.
Once you take the cash, that insurance no longer covers it. If the PBGC takes over a plan, it typically pays lifetime monthly benefits and allows a lump sum only for a benefit worth no more than $7,000 (plans ending in 2024 or later). A buyout window from a healthy plan may be your one chance at cash.
Start with the packet’s deadline. Enter both figures into the pension lump sum vs monthly comparison above, run your SSA age, then 90 and 95, at 4%, 5%, and 6%. If the implied rate beats what you’d realistically earn in most runs, guaranteed monthly checks are the stronger choice; if it rarely does, a lump sum would likely serve you better.
Frequently Asked Questions
What is the 6% rule for a lump sum pension?
A rule of thumb: if a year of checks tops 6% of the offer, the checks look good. The default gives 8.57% ($24,000 on $280,000). It ignores start age, raises, and life expectancy, so trust the implied rate instead.
Should I take a $44,000 lump sum or a $423 monthly pension?
For a 65-year-old man counted to the SSA average age, those checks imply about 10% a year, so they win unless you expect to earn more. Run your own age above.
Can I take the cash and buy a lifetime annuity later?
Yes. Compare annuity quotes first: a fixed annuity from an insurer is priced to cover its costs, so check what the same annuity income, a steady piece of retirement income, would cost before giving up the plan’s offer.
Figures reviewed September 2026: IRS segment rates for July 2026 (Notice 2026-51), the 2026 PBGC maximum guarantee table, IRS rollover and withholding rules, and the SSA Period Life Table 2023. Treat every result as an estimate: taxes, joint forms, and market swings are left out. Educational only, not financial, legal, or tax advice.