A pension lump sum is the plan’s price for your future monthly payments, worked out with interest rates and a mortality table set by the IRS. Neither choice is better in general. The useful test is simple: divide a year of payments by the lump sum. If the plan offers $2,000 a month or $300,000, the payments are worth 8% of the lump sum every year, for life, and you’d have to withdraw that much from investments to match them. The best-known rule of thumb for withdrawing from a portfolio starts at 4%, though it rises with inflation and many corporate pensions don’t. That gap is why the monthly payment is often the better deal for someone in good health.
The decision
At retirement, or during a buyout window, your employer offers a one-time payment instead of a lifetime pension. Take the payments and the plan, backed by federal insurance, carries the investment and longevity risk. Take the lump sum and that risk is yours, along with the flexibility. The choice is usually permanent.
If you’re a federal employee or a teacher, your plan probably doesn’t offer this choice in the same form; see the guide for teachers and federal employees.
How the lump sum is set
Private pension plans must pay at least a minimum lump sum calculated with three corporate bond interest rates the IRS publishes each month, called segment rates: one for payments in the next five years, one for years 6 to 20, and one for later years. The higher the rates, the smaller the lump sum, because each future dollar is discounted more.
| Segment rates (%) | Years 1 to 5 | Years 6 to 20 | After 20 |
|---|---|---|---|
| August 2025 | 4.20 | 5.29 | 6.08 |
| August 2026 | 4.65 | 5.75 | 6.73 |
Source: IRS, minimum present value segment rates.
Rates rose by about half a point over the year. Many plans fix the rate for the whole plan year from one lookback month, so a lump sum calculated from August 2026 rates will usually be smaller than one calculated from August 2025 rates for the same pension. Ask your plan which month and which year it uses, and when the next reset falls. Retiring a month earlier or later can change the offer.
How to compare the two
- The payout rate. A year of payments divided by the lump sum. Compare it with a sustainable withdrawal rate from a portfolio; see safe withdrawal rate.
- The insurer’s price. Ask for quotes on an immediate annuity paying the same monthly amount. If buying the same income would cost more than the lump sum, the plan’s payments are the cheaper source of it.
- The survivor’s income. If you’re married, compare the joint and survivor options: the survivor must receive between 50% and 100% of your payment, and each higher percentage lowers your own payment.
- Inflation. Many corporate pensions pay a fixed amount that never rises. At 3% inflation, a fixed payment buys about 26% less after 10 years. Social Security, which does rise, may cover the inflation risk.
- Your other guaranteed income. If Social Security and the pension together cover your basic bills, the lump sum’s flexibility is worth more. If they don’t, the lifetime payment is the floor under your plan.
- Health and family history. The payments are worth most to people who live a long time.
The rules that matter
- Spousal consent. For most private plans, a married participant’s default is a joint and survivor annuity. Taking a lump sum or a single-life annuity requires your spouse’s written consent, witnessed by a notary or a plan representative.
- Federal insurance. The Pension Benefit Guaranty Corporation insures private pensions up to a cap. For a single-employer plan that ends in 2027, the cap is $8,113.64 a month for a straight-life annuity starting at 65, and $6,409.78 at 62. A lump sum leaves that protection once it’s paid out.
- Taxes. Monthly payments are taxed as ordinary income as they arrive. A lump sum moved by direct rollover to an IRA isn’t taxed until you withdraw it. If the check is paid to you, the plan withholds 20%, and you have 60 days to deposit the full amount.
- Early access. Leaving your job in or after the year you turn 55 lets you draw from that employer’s plan without the 10% early-withdrawal tax. Moving the money to an IRA gives that up until 59½.
Common mistakes
- Treating the lump sum as a windfall rather than the price of an income you’re giving up.
- Taking the lump sum and buying an annuity with it through a commissioned seller. You’d often get less income than the plan offered, after costs and surrender charges.
- Choosing single-life payments plus life insurance to “protect” the spouse without pricing both. This is a common sales pitch; the insurance has to be bought, kept and paid for.
- A spouse signing the waiver without seeing their income in each scenario.
- Missing the rate reset, when retiring a month later would change the offer.
Watch who gains from your choice
An advisor paid 1% of assets earns nothing if you keep the monthly payments and about $5,000 a year if you roll a $500,000 lump sum to them. An annuity salesperson earns a commission if you buy a product with it. Neither means their advice is wrong, but you should know it. A fee-only planner paid a flat or hourly fee is paid the same whichever you choose.
Questions to ask an advisor
| Ask | A good answer includes |
|---|---|
| What return would the lump sum need to match the payments? | A rate, and how it compares with a safe withdrawal |
| What would an insurer charge for the same income? | A quote or estimate for your age |
| Which survivor option fits us, and why? | The survivor’s monthly income under each option |
| How does this fit with Social Security timing? | One income plan with both |
| Do you earn more if I take the lump sum? | A clear yes or no, in dollars |
When an advisor is worth it, and what it costs
This is a single, irreversible decision, often six figures, with a deadline. That’s where paying for a second opinion makes the most sense, particularly if you’re married, your plan offers several survivor options, or the lump sum would be most of your savings.
It fits a one-time plan, a median $2,000 (middle half $845 to $3,600), or hourly advice at a median $300. If you take the lump sum and want help investing and drawing it down, ongoing planning has a median of $4,500 a year, against $5,000 a year on $500,000 at 1%.
How to find one
The public graph has a pension planning specialty for advisors who work on lump-sum and survivor elections, and a list of pension planning specialists. Most people face this choice near retirement, so advisors for pre-retirees and everyone who serves pre-retirees are also worth a look. For the full income plan around it, see what to look for in a retirement advisor.