If you’re one of the shrinking number of workers with an old-style pension, the lump-sum-vs-annuity choice is usually a one-time, irreversible decision made under time pressure. The math behind it is more knowable than it feels.
How Interest Rates Drive the Lump-Sum Offer
Pension lump sums are calculated by discounting your future monthly annuity payments back to a present value using current interest rates — when rates go up, the lump sum goes down for the same monthly benefit, and when rates go down, the lump sum goes up. Segment rates through 2025–2026 have run in the 4–6% range, meaning lump-sum offers today are smaller for the same monthly annuity than they were during the low-rate 2020–2021 window. If you were quoted a lump sum a few years ago and didn’t take it, don’t assume the same offer still stands at today’s rates.
The Quick Rule-of-Thumb Comparison
Divide your annual annuity payment by the lump sum offered to get an implied payout rate. Payout rates near 7%+ tend to favor taking the annuity; rates near 5% tend to favor the lump sum, when compared against a roughly 4% safe portfolio withdrawal benchmark. For most 2026 pension offers, the lump sum wins on pure math once the plan’s implied discount rate exceeds about 5–6% — but this is a starting heuristic, not a substitute for running your own numbers.
The PBGC Insurance Ceiling Most People Don’t Know About
If you take the annuity and your employer’s pension plan later fails, the Pension Benefit Guaranty Corporation insures it — but only up to a cap. For a 65-year-old starting a straight-life annuity in 2026, the maximum guaranteed amount is $93,477 a year ($7,790/month); the joint-and-50%-survivor version caps lower, at about $7,011/month. If you begin benefits before 65, the caps drop further — roughly $4,673/month at age 60 and $3,505/month at 55. High earners with large pensions should check whether their expected benefit exceeds these caps, since anything above the PBGC ceiling isn’t protected if the plan defaults.
Factors Beyond the Math
Health and family longevity matter more here than in almost any other retirement decision — an annuity that pays for as long as you live is worth more to someone with family longevity into their 90s than to someone with a shorter expected lifespan, all else equal. Comfort managing a large lump sum also matters practically: a lump sum rolled into an IRA gives you full investment control and eventual flexibility (including access under the Rule of 55 if it lands in an employer plan rather than an IRA), but it also transfers all the longevity and market risk from the pension plan onto you personally.
The Bottom Line
Calculate the implied payout rate on your specific offer before deciding anything. A pension offer isn’t automatically the “safe” choice, and a lump sum isn’t automatically the “smart” choice — current interest rates and your own health outlook decide which one actually is.
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