Waiting until 70 for Social Security: the credits, the timing, the survivor
Each month past full retirement age adds two-thirds of a percent, for life, and for your widow or widower after you.
Checked by Radif Partners · Editorial policy · How we calculate
Delaying Social Security past full retirement age earns a credit of 2/3 of 1% for each month, 8% a year, for anyone born in 1943 or later (20 CFR 404.313). With a full retirement age of 67, starting at 70 pays 124% of your primary insurance amount: a $2,000 PIA becomes $2,480 a month instead of $2,000. Credits stop at 70: there is nothing to gain from waiting longer, and an application reaches back only 6 months. Credits earned during a year are added to your check the following January, except in the year you turn 70. In today's dollars the start at 70 overtakes a start at 67 at about age 82 and 6 months. The credits also pass to a surviving spouse, who inherits the larger check. Medicare does not wait: eligibility starts at 65, and if you are not yet collecting Social Security you must sign up for it yourself.
What waiting until 70 adds
At 70
$2,480
| Share of your PIA | 124.0% |
| More each month than at 67 | $480 |
| Total from 70 overtakes the FRA start at about | 82 and 6 months |
Today's dollars: COLAs raise both starts alike.
Three years of credits, priced
| Start at | Share of PIA | Monthly | Yearly | Received by 85 | Received by 95 |
|---|---|---|---|---|---|
| 67 | 100.0% | $2,000 | $24,000 | $432,000 | $672,000 |
| 68 | 108.0% | $2,160 | $25,920 | $440,640 | $699,840 |
| 69 | 116.0% | $2,320 | $27,840 | $445,440 | $723,840 |
| 70 | 124.0% | $2,480 | $29,760 | $446,400 | $744,000 |
The credit is linear: each month of delay adds the same 2/3 of 1% of the PIA, so the year from 69 to 70 is worth as much as the year from 67 to 68, $160 a month here. The regulation rounds each increase down to the dime and the monthly payment down to the dollar. By 85, the start at 67 has still collected more in total; by 95, the start at 70 is clearly ahead. The crossover is about 82 and 6 months.
Born earlier, more months of credit
| Born in | Full retirement age | Credit months to 70 | Share of PIA at 70 |
|---|---|---|---|
| 1955 | 66 and 2 months | 46 | 130.67% |
| 1956 | 66 and 4 months | 44 | 129.33% |
| 1957 | 66 and 6 months | 42 | 128.00% |
| 1958 | 66 and 8 months | 40 | 126.67% |
| 1959 | 66 and 10 months | 38 | 125.33% |
| 1960 and later | 67 | 36 | 124.00% |
Because full retirement age rose from 66 to 67 over the birth years 1955 to 1960, the room for delayed credits shrank from 46 to 36 months. The SSA's delayed retirement page gives the same percentages. The credit rate itself has not changed since the cohort born in 1943.
When the credits show up in your check
Credits are counted month by month but paid on a calendar rhythm. Suppose you start benefits in the middle of a year, between full retirement age and 70: your first check includes the credits earned through the previous December. The credits for the months of the current year are added the following January. In the year you reach 70, the SSA applies all credits as soon as you start, so a claim at exactly 70 needs no catch-up. This is why some people see their check rise in the first January after claiming, on top of the cost-of-living adjustment.
Nothing to gain after 70, and a short window behind you
No credit is earned for any month after the month you turn 70. An application also reaches back at most 6 months (20 CFR 404.621), so someone who files at 71 has lost six months for nothing. The same rule protects the delay in the other direction: when you file after full retirement age, the retroactive months can never go back to a month before full retirement age if that would make the benefit reduced for age. A retroactive start also means fewer months of credit, so reaching back is not free either.
The survivor gets the delay too
For a married higher earner, waiting raises two checks: their own and the one their spouse will inherit. A widow or widower at full retirement age receives 100% of what the deceased was receiving, delayed credits included. With a PIA of $3,200, the survivor gets $3,968 if the deceased had started at 70, against $3,200 after a start at 67. Early starts are partly cushioned by the RIB-LIM floor, but late starts carry their full increase. The survivor calculator shows every combination.
Medicare at 65 whatever you decide
Medicare eligibility did not move when full retirement age rose; it is 65 for everyone. According to the SSA, people already receiving Social Security at 65 are enrolled in Part A automatically. Someone waiting for 70 receives no Social Security at 65 and must enroll during the initial enrollment period, unless covered by an employer group health plan, in which case a special enrollment period applies later. The standard Part B premium for 2026 is $202.90 a month.
Income in the years of waiting
Delaying means living on something else from your sixties to 70: wages, savings or a pension. The earnings test does not matter here, since it stops at full retirement age, and you can work any amount while your credits build. If you change your mind after full retirement age, you can start at any month; past it, there is no reduction to fear. The break-even tool compares 70 with any earlier start, and the maximum benefit page shows what 70 means for a maximum earner.