They Bought a Joint Annuity at 67 With $400,000 From His 401(k). The $2,100 Check Is Guaranteed for Both Lives, and So Is the Tax on It
Converting a 401(k) into a guaranteed joint annuity looks like a simple trade for lifetime income, but the tax trap that springs on the surviving spouse is something almost no sales brochure bothers to mention.
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A married couple, both age 67, moves $400,000 from his workplace 401(k) into a joint-and-survivor income annuity. The insurer pays $2,100 a month, and the payments continue as long as either spouse is alive. Treat that figure as illustrative. Actual annuity quotes vary by insurer, state, both spouses’ ages and genders, payout option, and prevailing interest rates, and they change frequently. Gather several quotes and check each insurer’s financial strength rating before signing anything.
The rate backdrop matters here. The 10-year Treasury has climbed to roughly 5.19% in mid-October 2026, up sharply from 4.77% in early September, as hotter-than-expected inflation and a widening federal deficit push long-term yields toward multi-year highs. The Federal Reserve raised its target range to 3.75%–4.00% on September 16, 2026, its first hike since July 2023. Higher long-term yields allow insurers to price starting annuity income more generously, but the quoted monthly payment is not the Treasury rate and carries no government guarantee.
Joint and Survivor: What the Extra Protection Costs
A joint-and-survivor payout is smaller than a single-life payout on the same premium because the insurer expects to pay across two lifetimes instead of one. That gap is the price of survivor protection, paid every month in lower income. Common variations, listed in rough order of shrinking checks, are: life-only (the largest payment, with nothing after the annuitant dies), life with period certain or cash refund (guarantees a minimum payout to a beneficiary), joint with reduced continuation such as 50% or 75% to the survivor, and full 100% joint and survivor. Every additional layer of protection lowers the starting check.
Why Every Dollar Is Ordinary Income
Because the premium came from a pre-tax 401(k), there is no exclusion ratio and no tax-free return of principal. Every $2,100 payment is fully ordinary income, taxed at the couple’s marginal rate. A non-qualified annuity bought with after-tax dollars works differently: part of each payment is excluded from income until the basis is recovered, after which payments become fully taxable. Readers routinely conflate the two, and the difference reshapes the after-tax math considerably.
Widow’s Penalty on Three Fronts
This is the piece almost no annuity brochure covers. When one spouse dies, the household generally keeps only the larger of the two Social Security checks. The annuity keeps paying at the same rate. Income drops modestly. But tax thresholds collapse to roughly half their former width. Sequencing the survivor benefit around the remaining annuity income is its own puzzle, and we walked through the math in a free survivor benefits guide.
Federal brackets: the 2025 married filing jointly 22% bracket runs to $206,700, while the single 22% bracket ends at $103,350. The standard deduction shifts from $32,200 for joint filers in 2026 to $16,100 for singles.
Medicare IRMAA: The first Part B surcharge tier begins above $218,000 of modified adjusted gross income for joint filers and $109,000 for singles. Above that first tier, standard Part B in 2026 rises from $202.90 to $284.10 per month, with a separate Part D surcharge stacked on top. Social Security taxation thresholds for singles are also lower than for couples. The net result: a surviving spouse can face a higher effective tax rate and steeper Medicare premiums on a smaller total income.
Rollover Mechanics and RMDs
Move the funds via direct trustee-to-trustee transfer into an IRA annuity to avoid the mandatory 20% withholding on 401(k) distributions paid directly to the participant and the 60-day rollover deadline. Workplace plans typically require spousal consent for distributions, and some plans offer an in-plan annuity that may price better or worse than a retail quote. It is worth comparing both before committing.
On required minimum distributions, SECURE 2.0 set the beginning age at 73 for those born in 1951 to 1959 and 75 for those born in 1960 or later. A couple who is 67 in 2026 was born around 1959, placing them in the age-73 cohort. Annuitizing inside an IRA generally satisfies the RMD for the annuitized portion and reduces future RMDs on whatever remains invested.
The Case Against: Key Risks to Weigh
- Irreversibility. The $400,000 is gone as a liquid asset.
- Inflation. A level payment loses purchasing power over time. The Bureau of Labor Statistics reported that consumer prices rose 3.7% in the 12 months through September 2026, up from 3.4% in August, with energy costs driving much of the acceleration. The Social Security Administration officially set the 2027 cost-of-living adjustment at 3.6%, the largest increase in four years. Social Security adjusts annually. A level annuity does not. A cost-of-living rider typically cuts starting income by roughly 25% to 30%.
- Insurer credit risk. State guaranty association coverage varies, commonly around $250,000 in present value per contract, which argues for splitting a large premium across two carriers.
- Legacy. A life-only joint contract usually leaves nothing to heirs.
- Product confusion. Plain single-premium income annuities are transparent. Indexed and variable annuities marketed to this age group carry heavier fees and larger sales incentives.
Who This Actually Fits
A couple where one spouse has a thin earnings record and a small Social Security benefit, where family longevity is real, and where enough liquid savings remain outside the contract to cover a major unexpected expense. For that household, the guaranteed paycheck for two lives is worth accepting the smaller check and the permanent tax bill. For everyone else, the widow’s penalty and the permanent loss of liquidity deserve a much longer look than any sales illustration will provide.
Editor’s note: This article has been updated to reflect the Federal Reserve’s September 2026 rate increase to a 3.75%–4.00% target range, the rise in the 10-year Treasury yield to approximately 5.19% as of mid-October 2026, the Bureau of Labor Statistics’ September 2026 CPI report showing 3.7% annual inflation, and the Social Security Administration’s official announcement of a 3.6% cost-of-living adjustment for 2027.
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David Beren has been a Flywheel Publishing contributor since 2022. Writing for 24/7 Wall St. since 2023, David loves to write about topics of all shapes and sizes. As a technology expert, David focuses heavily on consumer electronics brands, automobiles, and general technology. He has previously written for LifeWire, formerly About.com. As a part-time freelance writer, David’s “day job” has been working on and leading social media for multiple Fortune 100 brands. David loves the flexibility of this field and its ability to reach customers exactly where they like to spend their time. Additionally, David previously published his own blog, TmoNews.com, which reached 3 million readers in its first year. In addition to freelance and social media work, David loves to spend time with his family and children and relive the glory days of video game consoles by playing any retro game console he can get his hands on.
