For couples, Social Security is a two-person optimization, and the sequencing matters as much as the ages.
Three rules that drive couple strategy
Spousal benefits top out at half. A spouse with little or no earnings record can receive up to 50% of the other's full-retirement-age benefit. Importantly, spousal benefits do not grow past full retirement age — so waiting to 70 doesn't help a spousal-only claim.
Survivor benefits keep the bigger check. When one spouse dies, the household keeps the larger benefit and loses the smaller. This is why the higher earner's claiming age is really a decision about the survivor's income, potentially decades from now.
One spouse must file to unlock the other's spousal benefit. The claiming order can matter: sometimes it pays for the lower earner to claim early while the higher earner waits.
A common shape for the plan
Lower earner claims earlier to bring income into the household; higher earner delays toward 70 to maximize both their own check and the eventual survivor benefit. It's not universal — health, age gaps and income needs bend the answer — but it's the pattern the math favors surprisingly often.
Bring both earnings statements to one planning session and the whole picture usually becomes clear in under an hour.