The 10-Year Marriage Rule Just Cost Her $1,400 a Month in Social Security. Here’s Why the Calendar Matters

She is 62 years old, recently divorced, and just learning that the calendar made a decision her lawyer never flagged. The marriage lasted nine years and 10 months. The final decree was signed about two months before what would have been their tenth anniversary. On paper, that gap looks small. For Social Security purposes, it is the difference between qualifying for a benefit on her higher-earning ex-husband’s record and qualifying for nothing on it at all.

She had assumed, like many women in her position, that a decade of marriage to a higher earner meant something at retirement. The figure that brought her into a Social Security office was roughly $1,400 a month: the divorced-spouse benefit she expected to claim against his record once she reached full retirement age (FRA). That number is now off the table. Her own work-record benefit, built entirely on her own earnings history, remains untouched. The spousal piece she had been counting on is gone, and there is no appeal, no rounding, and no partial credit for getting close.

The Hard Line at 10 Years

The Social Security rule for divorced-spouse benefits is unusually rigid. To claim on a former spouse’s record, the marriage must have lasted at least 10 years. Nine years and 11 months is not enough. Nine years and 10 months, her exact situation, is not enough either. The same 10-year minimum applies to divorced-survivor benefits, which can become relevant later if the ex-spouse dies first.

Duration is measured from the marriage date to the date the divorce becomes final, meaning the date a judge signs the decree. It is not measured to the date of separation, the date someone moved out, or the date a petition was filed. That distinction matters because couples often separate well before the legal paperwork is complete. The Social Security Administration (SSA) looks only at the legal bookends of the marriage.

Two additional conditions apply for the divorced-spouse benefit: the person claiming must be currently unmarried and at least 62 years old. She meets both. The only box she cannot check is the one the calendar filled in for her.

Why does this single rule outweigh almost every other planning detail for someone in her position? Because a divorced-spouse benefit, once earned, is a lifetime income stream that adjusts each year with inflation. The 2025 cost-of-living adjustment (COLA) came in at 2.5%, and the 2026 COLA landed at 2.8%, as confirmed by the SSA. The Senior Citizens League currently projects the 2027 COLA at 3.5%, with the SSA set to announce the official figure on October 14, 2026. Those annual raises compound meaningfully across a long retirement. Losing eligibility on the ex’s record removes a stream of payments she might otherwise have collected for 20 or 30 years.

A Recent Law Change Worth Knowing

One broader development has reshaped the landscape for anyone navigating divorced-spouse benefits. The Social Security Fairness Act, signed into law on January 5, 2025, eliminated the Government Pension Offset (GPO) and the Windfall Elimination Provision (WEP). The GPO had previously reduced or wiped out divorced-spouse and survivor benefits for people who also receive pensions from government jobs not covered by Social Security, such as certain state, local, or federal positions. With the GPO gone, a divorced spouse who receives that kind of government pension may now be able to collect a full divorced-spouse benefit for the first time, provided the 10-year marriage requirement is met.

For those who had already been receiving reduced benefits under the GPO, the SSA recalculated payments automatically. By July 7, 2025, the agency had completed sending over 3.1 million payments totaling $17 billion to eligible beneficiaries, finishing five months ahead of its original schedule.

How It Reshapes the Rest of Her Plan

Her retirement now leans almost entirely on her own benefit, her savings, and any part-time income she chooses to add. The divorced-spouse benefit would have functioned as a floor: a stable monthly check that lets a retiree spend savings more confidently or delay claiming her own benefit to let it grow. Without it, the roughly $1,400 a month she had been counting on is simply gone. Working longer, drawing down savings more conservatively in the early retirement years, or rethinking when to file on her own record are all options now on the table in ways they were not before.

One piece of context worth holding: because she is currently unmarried, if the decree had been signed just two months later, crossing the 10-year line, she would have unlocked the divorced-spouse benefit now and a potential divorced-survivor benefit later. The rule is all-or-nothing. Cross the threshold and a lifetime income stream opens up. Fall short by even a month and it does not.

What People Approaching the Threshold Should Know

For anyone divorcing near the 10-year mark, the decree date is the only date that matters. A conversation with a family-law attorney who understands the Social Security implications, before signing anything final, can be well worth the time. Some attorneys are now factoring the post-GPO landscape into divorce planning, since eliminating that offset can meaningfully change the value of a divorced-spouse benefit for clients with government pensions.

For those already past 10 years, the door is open. A divorced-spouse benefit, worth up to 50% of the ex-spouse’s FRA benefit, becomes available at 62. A divorced-survivor benefit, which can reach 100% of the deceased ex-spouse’s benefit, becomes available later if the ex dies, even if that ex remarried. The specifics around earnings history, remarriage status, and timing are worth confirming directly with the SSA before making any irreversible filing decision.

Editor’s note: The 2027 Social Security COLA projection was updated to 3.5%, reflecting the Senior Citizens League’s most current forecast as of September 2026, revised down from the earlier August 2026 estimate of 3.6%. The October 14, 2026 SSA announcement date for the official 2027 COLA was also added, along with the confirmed detail that the SSA completed its retroactive payment processing, sending 3.1 million payments totaling $17 billion, by July 7, 2025.

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