Spousal Social Security benefit stops growing at FRA, not 70

Full analysis

A spousal Social Security benefit — the payment available to a husband or wife based on the worker's record rather than their own — does not keep increasing each year the way a worker's own benefit does. While a worker who delays claiming gains roughly 8% per year in delayed credits up to age 70, a spouse's benefit hits its ceiling at the spouse's full retirement age (FRA), the age set by Social Security — typically 66 or 67 depending on birth year — beyond which no additional credits accumulate. Financial writer Adam Grossman flagged this in a note shared on HumbleDollar: a spouse who waits past FRA to claim gains nothing extra, so delaying beyond that point is a mistake.

There is a separate consideration for surviving spouses. If the worker delayed claiming past their own FRA, the larger benefit that results does carry over to survivor benefits — but the surviving spouse collects 100% of that higher amount only if they claim at their own FRA. Claiming survivor benefits earlier reduces the amount. These two rules — the spousal cap at FRA and the survivor benefit's own timing rules — interact in ways that can cost couples real money if not planned carefully.