If you’re deciding between a pension and a lump sum payout in 2026, the math genuinely favors different choices than it did just a few years ago. Higher interest rates — which pension administrators use to calculate lump sum offers — have reduced lump sum values by 20% or more compared to 2021 levels, meaning your monthly pension check now buys back into roughly the same value that a much larger lump sum once could. For most retirees between 62 and 72 who are in average or better health, sticking with the guaranteed monthly pension income has become the stronger move in the current rate environment.

Why did the pension vs. lump sum calculation change?

Pension lump sums are calculated using IRS-prescribed interest rates (called the segment rates). When those rates are low — as they were from 2010 to 2021 — lump sums are large, because the company needs to set aside more money today to fund your future payments. When rates rise, the math flips: the company needs less money today to fund the same future payments, so the lump sum offer shrinks.

Since 2022, the Federal Reserve’s rate hikes rippled directly into pension math. Segment rates climbed from near zero to levels not seen in 15 years, and lump sum offers dropped accordingly. If your employer offered you $400,000 in 2021, that same pension might generate a lump sum offer of $300,000 or less today. The monthly benefit hasn’t changed — only the cash-out value has.

How do I know if the pension or lump sum is right for me?

Start with the “breakeven” test. Divide the lump sum offer by your annual pension benefit to find how many years it takes for the pension to “pay back” the foregone cash. For example, a $300,000 lump sum against a $24,000-per-year pension (that’s $2,000/month) means a 12.5-year breakeven. If you’re 63 and in good health, you have a strong chance of living past 75 — which means the pension wins on raw dollars alone, before even accounting for investment risk.

Then layer in these personal factors:

  • Survivor needs. Does your spouse depend on your income? Most pensions offer a joint-and-survivor option that keeps payments coming after you die. A lump sum requires disciplined investing to replicate that.
  • Other guaranteed income. If Social Security and other pensions already cover your fixed expenses, a lump sum offers flexibility and a legacy for heirs.
  • Your health. A serious health condition or family history of early death shifts the math toward the lump sum.
  • Inflation protection. Does your pension include cost-of-living adjustments (COLAs)? If not, inflation quietly erodes its value over 20+ years.

What role does Social Security timing play alongside a pension decision?

Your pension choice and your Social Security claiming strategy are deeply connected. If you take the pension early and claim Social Security at 62, you lock in both at their lowest possible values. Delaying Social Security to age 70 increases your benefit by roughly 8% per year after full retirement age — that’s a guaranteed, inflation-adjusted return that no investment can reliably match right now.

If your pension provides enough bridge income to cover expenses from, say, age 62 to 70, delaying Social Security while drawing the pension can be a powerful combination. The pension handles the near-term, and then a maximized Social Security benefit kicks in as your permanent, inflation-adjusted income floor.

One tax note worth knowing: up to 85% of your Social Security benefit can be taxable if your combined income (adjusted gross income plus half your Social Security) exceeds $34,000 for single filers or $44,000 for married couples. A larger pension income can push you into that zone, which is one more reason to model the full picture before deciding.

How do RMDs affect a pension vs. lump sum choice?

If you take a lump sum and roll it into a Traditional IRA, you’ve created a Required Minimum Distribution (RMD) obligation. Under current 2025–2026 rules, RMDs begin at age 73. The IRS requires you to withdraw a percentage of your IRA balance each year based on life expectancy tables — and those withdrawals are fully taxable as ordinary income.

A large IRA can generate RMDs that push you into a higher tax bracket, trigger taxation of Social Security, and even cause Medicare IRMAA surcharges (more on that below). Monthly pension income, by contrast, is predictable and doesn’t create the same lump-of-income problem in any single year.

If you do take the lump sum and roll it to an IRA, consider Roth conversions in lower-income years before RMDs begin, which can reduce future mandatory withdrawals.

What are Medicare IRMAA surcharges, and can a lump sum trigger them?

IRMAA stands for Income-Related Monthly Adjustment Amount — a surcharge added to your Medicare Part B and Part D premiums when your income exceeds certain thresholds. In 2025, the standard Medicare Part B premium is $185 per month. But if your modified adjusted gross income (MAGI) two years prior exceeded $106,000 (single) or $212,000 (married filing jointly), you pay more — sometimes several hundred dollars more per month.

Here’s the trap: a large IRA distribution — including a lump sum rollover you later convert or withdraw — can spike your MAGI and trigger IRMAA surcharges two years later. A $200,000 Roth conversion in 2026 could mean higher Medicare premiums in 2028. Monthly pension income is steady and predictable, making it far easier to stay below IRMAA thresholds with careful planning.

What should I actually do before making this decision?

Don’t sign anything until you’ve done three things:

  1. Request the full pension illustration — monthly benefit, joint-survivor option amounts, and any COLA provisions.
  2. Get the lump sum offer in writing with the exact segment rates used to calculate it. Ask HR whether a different election date (such as January 1 of next year) would use different rates.
  3. Model both options with a fee-only financial planner who specializes in retirement income. A few hundred dollars for a one-time analysis is money extremely well spent on a decision this large.

The interest-rate environment has handed the pension a meaningful advantage in 2026 — but your personal health, family situation, and other income sources are what seal the verdict. Run your own numbers, not just the general rule.

Frequently Asked Questions

When should I claim Social Security to maximise my benefit?

Claiming Social Security at age 70 gives you the largest possible monthly benefit — roughly 76% more than claiming at 62. For every year you delay past your full retirement age (66 or 67 depending on your birth year), your benefit grows by 8%, which is a guaranteed, inflation-adjusted return. If you’re in good health and have other income to bridge the gap, delaying is almost always the mathematically superior choice.

How much of Social Security is taxable?

Up to 85% of your Social Security benefit can be subject to federal income tax, depending on your combined income. Combined income is your adjusted gross income plus any tax-exempt interest plus half of your Social Security benefit. Single filers with combined income above $34,000 and married filers above $44,000 pay tax on up to 85% of their benefits.

What are the RMD rules for 2025 and 2026?

Under current law, Required Minimum Distributions from Traditional IRAs and most workplace retirement plans begin at age 73. The annual amount is calculated by dividing your account balance (as of December 31 of the prior year) by an IRS life-expectancy factor. Failing to take your full RMD triggers a 25% excise tax on the amount you should have withdrawn — reduced to 10% if corrected promptly.

How do I avoid Medicare IRMAA surcharges?

IRMAA surcharges kick in when your modified adjusted gross income from two years prior exceeds $106,000 (single) or $212,000 (married filing jointly) in 2025. To stay below those thresholds, consider spreading Roth conversions over multiple years, timing large IRA withdrawals carefully, and using qualified charitable distributions (QCDs) after age 70½ to satisfy RMDs without raising your taxable income. If your income drops due to a life event like retirement, you can appeal your IRMAA determination directly with Social Security.

What is the Medicare Part B premium for 2025?

The standard Medicare Part B premium in 2025 is $185.00 per month per person. However, higher earners pay more through the IRMAA surcharge system, with monthly premiums reaching as high as $628.90 for individuals with income above $500,000. Premiums are typically deducted automatically from your Social Security benefit each month.