The number that decides when you can collect full Social Security benefits has been quietly climbing for years, and it's not done yet.
For anyone born in 1960 or later, the full retirement age is 67—not the 65 that many Americans still assume.
That three-year gap can shrink a monthly check by thousands of dollars over a retirement, and it's catching people off guard at exactly the wrong moment.
Claim at 62 and your benefit is permanently reduced—roughly 30% lower than if you'd waited until 67.
Hold out until 70 and you collect delayed retirement credits that boost your payment by about 24% above the full amount.
The difference between the earliest and latest claiming ages can be 76% or more.
On a $1,800 full benefit, that's the gap between about $1,260 and $2,230 a month.
The full retirement age itself used to be 65.
Congress raised it in 1983 through a phased schedule, and it topped out at 67 for anyone born in 1960 or later.
So a worker turning 62 this year faces a full retirement age of 67.
There's no new law pending, but the ratio of workers to retirees keeps falling, and that's why the age keeps coming up in every Washington budget fight.
What trips people up is the assumption that 65 is still the magic number, often because that's when Medicare starts.
Medicare eligibility and Social Security's full retirement age are two separate rules, and mixing them up leads to early claims that are hard to undo.
You generally have only 12 months after claiming to withdraw an application, and only once.
A lower earner claiming early can drag down a spousal benefit, and a survivor benefit is based on what the higher earner locked in.
Claiming early can cut the survivor's income for decades after the first spouse passes.
Check your real number first—create or log into a my Social Security account to see your personalized benefit estimates at 62, 67, and 70.
Then look at your health, your other income, and whether you plan to keep working.
Earning above the annual limit before full retirement age can temporarily reduce benefits, though the money isn't lost forever.
If you're close to claiming and unsure, a single free session with a Social Security Administration representative or a fee-only financial planner can clarify your specific case.
Waiting isn't always right—if your health is poor or you need the cash, claiming earlier can make sense.
But going in blind is the expensive mistake.
One more thing worth knowing: cost-of-living adjustments apply whether you claim early or late, so the percentage gap between claiming ages tends to persist.
The takeaway: the retirement age didn't move because anyone voted to raise it for today's workers—it moved decades ago, and it's already here.
Most people are still planning around a number that no longer exists.
Final Thoughts
Checking your actual benefit at each age takes about ten minutes and could be the highest-paid quarter hour of your financial life.