Divorced After 12 Years? You Can Claim Half Your Ex’s Social Security Without His Knowledge

A 66-year-old woman divorced 12 years ago after a 14-year marriage has a Social Security benefit of about $1,200 a month at her full retirement age (FRA) of 67. Her ex-husband, the higher earner, receives roughly $3,200 monthly. What she may not realize is that she can claim on his earnings record without his knowledge or cooperation, and his monthly check stays completely untouched.

This blind spot shows up constantly in retirement forums. Most people assume the door closed the day the marriage ended, but the divorced-spouse benefit remains intact for years afterward and can be worth thousands of dollars annually to anyone who knows it exists. The Social Security Administration pays these benefits regardless of the claimant’s gender or sexual orientation, applying the same rules to all eligible former spouses.

The rule that changes the math

Four conditions must all be satisfied for a divorced spouse to draw on an ex’s earnings record: the marriage lasted at least 10 years, the claimant is currently unmarried, the claimant is at least 62, and the ex is at least 62. He does not need to have filed for benefits, provided the divorce was finalized two or more years ago. Social Security will not contact him, and his benefit stays exactly the same whether or not she files.

Social Security pays the higher of her own benefit or the ex-spousal benefit, never both. At her FRA of 67, the ex-spousal benefit equals 50% of her ex’s primary insurance amount (PIA), which works out to $1,600 a month against his $3,200. Compared to her own $1,200, that is a gain of $400 per month, or $4,800 a year, for life. One phone call and one form can raise her annual income by roughly $4,800, and that amount is indexed for inflation every year.

One important nuance: the spousal benefit is anchored to the ex’s PIA, meaning the amount he would receive at his own FRA. If he delayed claiming to age 70 to earn delayed retirement credits, those extra credits do not pass through to her divorced-spouse benefit. The ceiling stays at 50% of his PIA regardless of when he actually files.

Why timing still matters

The 50% figure applies only if she waits until her own FRA. Filing earlier shrinks the spousal portion permanently. For someone born in 1960 or later with an FRA of 67, the Social Security Administration reduces the divorced-spouse benefit to 32.5% of the ex’s PIA at age 62, climbing back to 50% only at FRA. On her $1,600 target, starting at 62 instead of 67 leaves her with roughly $1,040 a month, about $560 short every single month. Compounded across a 25-year retirement, that gap becomes a very significant sum.

Cost-of-living adjustments (COLAs) then ride on whichever benefit she collects, which is why the base amount matters so much at the start. The BLS confirmed that the CPI-U rose 3.5% over the 12 months ending June 2026, and the July 2026 reading, released August 12, came in at 3.4% year-over-year. A COLA applied to a $1,600 base puts meaningfully more money in her pocket than the same rate applied to a $1,200 base, and that compounding difference repeats without exception every year she lives.

How this lands in the rest of her retirement

If her ex dies first, the divorced-spouse benefit converts to a divorced-survivor benefit worth up to 100% of his benefit. In this scenario, that could mean $3,200 a month instead of $1,600. For women who outlive their ex-husbands, that survivor conversion is the long-tail prize of the entire calculation, and it is a reason to think carefully before remarrying. Remarriage before age 60 shuts off the survivor option unless that later relationship also ends.

The extra $4,800 a year can push a retiree across the threshold where Social Security itself becomes taxable. The combined-income formula counts half of benefits plus other income, and for a single filer, benefits start becoming taxable once that total reaches $25,000. A larger benefit paired with a 401(k) distribution in the same year can push more income into taxable territory quickly.

One partial offset worth knowing: the One Big Beautiful Bill Act, signed into law on July 4, 2025, created a temporary $6,000 senior deduction for taxpayers age 65 and older, available for the 2025 through 2028 tax years. The deduction can be claimed on top of either the standard deduction or itemized deductions. It phases out starting at $75,000 in modified adjusted gross income for single filers and disappears entirely at $175,000. For retirees near the Social Security taxation threshold, this deduction can help absorb the income bump from switching to a larger benefit. Model the interaction before pulling the trigger on large IRA distributions.

What to think through before filing

1. Confirm eligibility on paper. Pull the divorce decree and marriage certificate. Ten years of marriage is the bright line. Nine years and 11 months gets nothing.
2. Get the ex’s benefit estimate. Social Security will share it once you apply, even if he has not filed. If his benefit is close to or below twice yours, the spousal route may not help and your own record wins.
3. Wait until full retirement age if you can. Locking in a permanently reduced benefit at 62, when a few more years would mean hundreds more per month for life, is the hardest mistake to undo.

Every divorce file looks different, and interactions with pensions, remarriage history, or a deceased ex can shift the answer entirely. The core point is simply that this benefit exists, it is hers to claim, and leaving it on the table is the costliest oversight in this scenario.

Editor’s note: This pass updated the COLA paragraph to include the July 2026 BLS reading of 3.4% year-over-year (released August 12, 2026) as the most current inflation figure, and added the complete phaseout threshold for the One Big Beautiful Bill Act senior deduction ($175,000 MAGI for single filers). A note on SSA’s gender-neutral application of divorced-spouse benefit rules was also added.

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