The $200,000 Social Security Mistake Couples Make at 64 Without Realizing It

The Decision Sitting on the Kitchen Table

You are both 64. One of you earned more over a long career, the other took time off to raise kids or worked in lower-paying roles. You have some savings, your health is decent, and you are tired of working. The temptation is to file for Social Security together, start the checks, and call it done. That single choice, made out of fatigue rather than math, can quietly cost a household six figures.

On retirement forums, a version of this question surfaces almost every week: a couple in their mid-60s asking whether they should just claim now and stop worrying about it. For most couples with uneven earnings histories, the honest answer is hard to hear. Claiming together at 64 is the single most expensive habit in retirement planning. Social Security functions as longevity insurance, a survivor policy, and an inflation-protected annuity all at once, and the couple’s claim order determines how much of that value the household actually captures.

The One Decision That Drives the Outcome

The factor that matters most is when the higher earner claims. Everything else is a rounding error by comparison.

Consider a straightforward example. The higher earner has a full retirement age benefit of $3,200 a month at 67. The lower earner is at $1,800 at 67. Claiming at 64 trims each benefit by 20%, because Social Security reduces benefits for every month claimed before full retirement age and adds roughly 8% per year for each year of delay up to age 70.

Strategy A, both claim now at 64: the higher earner collects $2,560 a month, the lower earner gets $1,440, for $4,000 combined. Run that to age 85 and the household collects roughly $1.01 million in lifetime benefits.

Strategy B, lower earner claims at 64, higher earner waits until 70: the lower earner’s $1,440 starts immediately. The higher earner’s check grows to roughly $4,224 a month at 70 after delayed retirement credits and cost-of-living adjustments, which came in at 2.8% for 2026 alone. From 70 to 85, the household pulls in $5,664 a month. Lifetime total: about $1.13 million.

That is roughly $120,000 more in pure cash. The bigger gain is hidden in the survivor benefit. When the higher earner dies, the surviving spouse keeps the larger of the two checks for the rest of their life. Locking in $4,224 instead of $2,560 can add another six figures to the survivor’s remaining years, pushing the total household advantage to around $200,000.

Bridging the Gap From 64 to 70

The reason couples reject this strategy is usually a cash flow problem, not a math problem. The higher earner forgoes six years of checks to get a bigger one later, and something has to fund those years.

For most couples, the practical answer is a deliberate drawdown of the 401(k) or IRA. Pulling $30,000 to $40,000 a year from tax-deferred accounts between 64 and 70 accomplishes two things at once. It pays the bills, and it shrinks the balance that will eventually trigger larger required minimum distributions and higher Medicare premiums later. Think of it as purchasing a larger guaranteed income stream with your own savings, at a return rate that includes both the 8% annual delayed credit and each year’s COLA adjustment.

Health is a legitimate variable. If the higher earner has a serious condition that makes reaching the mid-80s unlikely, claiming earlier can be the right call. For couples in reasonable shape, though, the actuarial tables favor the delay. According to the CDC’s 2024 mortality data, remaining life expectancy at 65 is 19.7 years for the total population, meaning the average 65-year-old reaches nearly 85. At least one spouse in a couple is statistically likely to live well past that marker, which is precisely why locking in the higher earner’s maximum benefit matters so much.

What to Do Before You File

1. Pull both benefit estimates from your my Social Security account, then run them through a claiming optimizer such as Open Social Security or MaxiFi. The output is usually clear: in most uneven-earning couples, delay the higher earner.
2. Map the bridge. Decide which accounts will cover the gap years and what your tax bracket looks like during that window. Coordinating the drawdown with the delay is where households often leave money on the table.

The hardest mistake to undo is filing the higher earner too early. That smaller check follows the surviving spouse for the rest of their life. Health, other income, and family longevity can all shift the answer, so it is worth running your own numbers rather than borrowing a neighbor’s plan.

Editor’s note: This article corrects the early-claiming reduction at age 64 from approximately 13% to the accurate 20% figure (for workers with a full retirement age of 67), updates the corresponding example benefit amounts, refreshes the life expectancy figure at 65 to 19.7 years per CDC 2024 final mortality data, and adds context on the 2.8% Social Security COLA for 2026.

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