The phase-in that started more than four decades ago finally reached its ceiling: anyone born in 1960 or later has a full retirement age of 67, the point at which Social Security pays an unreduced retirement benefit. For decades, 65 was the number every American associated with retiring on Social Security, but Congress raised it gradually starting with workers born in 1938, adding a few months per birth year until the increase leveled off completely at 67. A worker born in 1959 still retires at 66 and 10 months; one born a single year later needs to wait the extra two months to reach 67.
Why the Full Retirement Age Climbed From 65 to 67
Social Security’s retirement age calculator traces the increase back to a 1983 law that raised the full retirement age gradually, starting with people born in 1938, because Americans were living longer and staying healthier later in life than when the original 65-year threshold was set decades earlier. The increase moved in small increments, typically two months per birth year, rather than jumping all at once, which is why someone born in 1955 has a full retirement age of 66 and two months while someone born just five years later has a full retirement age fully a year later, at 67.
That gradual, birth-year-by-birth-year design meant the change was nearly invisible to any single generation of workers, even though the cumulative effect over the phase-in period added a full two years to the age at which a worker becomes entitled to an unreduced benefit. Someone born in 1943 through 1954 still has a full retirement age of 66, the last group grandfathered into the pre-increase standard before the schedule started climbing again toward 67 for people born in 1955 and after.
One number the 1983 law left untouched throughout the entire phase-in is the earliest possible claiming age: 62 remains the floor for retirement benefits for every birth year, including everyone now subject to the 67 full retirement age. Only the size of the reduction for claiming that early changed as the full retirement age climbed, not the age itself, which is why 62 has stayed the go-to reference point in Social Security planning conversations for decades even as the number it gets compared against kept moving.
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What Claiming Before 67 Actually Costs, and What Waiting Earns
Reaching full retirement age is not a requirement to start collecting Social Security; a worker can still file as early as age 62, but doing so locks in a permanently reduced monthly benefit rather than a temporary one. According to Social Security’s own retirement age and benefit-reduction chart, a worker born in 1960 or later who claims at exactly 62 receives a benefit reduced by 30 percent compared with waiting until 67, the largest early-claiming penalty of any birth-year group the agency has published, precisely because the gap between 62 and full retirement age is now a full five years for that group.
That 30 percent reduction is noticeably steeper than what earlier birth-year groups faced for claiming at the same age 62. A worker born in 1943 through 1954, whose full retirement age is 66, saw only a 25 percent reduction for filing at 62, because there were only 48 months of early claiming to penalize instead of 60. Each two-month increase in the full retirement age effectively widened the early-claiming penalty window a little further, until the changes together landed the 1960-and-later group at a full five-year gap and the maximum 30 percent reduction.
The same math runs in reverse for a worker willing to wait past full retirement age. Social Security’s guidance on delayed retirement credits confirms that a worker who postpones filing beyond full retirement age, up to age 70, earns a credit that permanently increases the monthly benefit for every month of the delay, on top of whatever cost-of-living adjustments apply in the meantime. Waiting from 67 to 70 therefore produces the opposite effect of claiming at 62: instead of a permanent reduction, the worker locks in a permanently higher check for the rest of their life.
A Reminder the Full Retirement Age Doesn’t Apply to Everything
The 67-for-1960-and-later rule governs a worker’s own retirement benefit, but Social Security explicitly notes that a survivor’s full retirement age can be different from the retirement full retirement age described here, since the two schedules are calculated separately and don’t necessarily move in lockstep for every birth year. A widow or widower planning around a deceased spouse’s record needs to check the survivor-specific age rather than assuming the same 67 threshold automatically applies to that benefit.
Reaching full retirement age also intersects with Medicare in a way that has nothing to do with the benefit-reduction math: Social Security’s own guidance reminds workers who plan to delay their retirement claim past 65 that they should still apply for Medicare within three months of turning 65, because waiting longer can raise the cost of Medicare Part B and Part D coverage regardless of when Social Security itself is eventually claimed.
For a worker approaching 62 today, the practical takeaway is that the calendar has genuinely stopped moving on this particular number: 67 is now the permanent full retirement age for every birth year from 1960 onward, with no further phase-in scheduled and no indication from Social Security that another increase is currently written into law. Any future change to that number would require a new act of Congress, not a continuation of the gradual schedule that finished with this birth-year group.
This article was drafted with AI assistance and edited for accuracy.
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