Retirement calculator

Pension vs. lump sum calculator

Find out which option is worth more in today's dollars — the guaranteed monthly pension or the one-time lump sum buyout.

Uses present value math Accounts for life expectancy No signup required
Enter your numbers Retirement · 2026
Pension total value (to life expectancy)
$607,200
vs. lump sum of $380,000
✓ Pension wins at your life expectancy
Total pension payments
Lump sum if invested
Implied pension return rate

How to read your results

This calculator compares the total nominal value of taking the pension as monthly payments until your life expectancy, against the lump sum invested at your assumed return rate over the same period. It also shows the implied return rate the pension represents — useful for comparing against what you could realistically earn investing the lump sum yourself.

The pension's hidden value: longevity insurance. Unlike investing a lump sum yourself, a pension pays for as long as you live — even if that's well past your expected life expectancy. If you're risk-averse about outliving your savings, or come from a family with long lifespans, this insurance-like feature has real value beyond the pure math shown here.

What this calculator doesn't include

  • Survivor benefits — many pensions offer a reduced payment that continues to a spouse after death; this changes the total value calculation for married couples.
  • Inflation — most pensions are fixed (not inflation-adjusted), so their real purchasing power declines over a long retirement. The lump sum invested can potentially keep pace with inflation if invested in growth assets.
  • Pension plan financial health — if the pension provider has financial difficulties, payments could be at risk (though PBGC insurance covers many private pensions up to certain limits).
  • Tax treatment differences — lump sums rolled into an IRA can defer taxes; pension income is typically taxed as ordinary income as received.

When the lump sum makes more sense

If you have health concerns suggesting a shorter-than-average lifespan, want investment control and flexibility, or have other assets to provide guaranteed income (reducing your need for the pension's stability), taking the lump sum and investing it yourself can be the better choice — especially if you're a disciplined, experienced investor.