When you start Social Security is the biggest decision in the program, and the one you control. Claim at 62 and every check is smaller for life; wait until 70 and every check is larger for life. The mechanics are fixed; the choice is yours.
The three ages
| Age | What it is | Effect on the monthly check |
|---|---|---|
| 62 | The earliest you can claim a retirement benefit | Permanently reduced — about 70% of the full amount when your FRA is 67 |
| Full retirement age (FRA) | The age the benefit formula is built around | 100% of your primary insurance amount |
| 70 | The age past which waiting adds nothing | Permanently increased — about 124% of the full amount when your FRA is 67 |
Your FRA is 66 if you were born 1943–1954, 66 and two to ten months for 1955–1959, and 67 for 1960 or later. Your primary insurance amount (PIA) is the benefit at FRA, computed from your 35 highest-earning years.
Claiming early: a permanent reduction
The reduction for each month before FRA is permanent — the smaller check stays smaller for life, with cost-of-living adjustments applied to the reduced amount. At 62 with an FRA of 67, the cut is about 30%: a $2,000 PIA becomes about $1,400. You collect for more years, in smaller amounts.
Two things travel with an early claim. If you keep working before FRA, the earnings test withholds $1 of benefits for every $2 you earn above $23,400 in 2025, credited back at FRA — the working-while-claiming lesson walks the math. And Medicare starts at 65 whatever you do with Social Security; if you are not yet receiving benefits at 65 you enroll yourself in the 7-month Initial Enrollment Period, as the Medicare enrollment lesson explains.
Waiting past FRA: 8% a year
Every year you delay past FRA earns delayed retirement credits of 8%, until age 70 — three years of waiting turns 100% into about 124%. The credits stop at 70. The larger check is paid for by the checks you did not collect while waiting, so delaying takes work income or savings — a 401(k) or IRA — to live on meanwhile.
| Claim at (FRA = 67) | Share of your PIA |
|---|---|
| 62 | About 70% |
| 67 | 100% |
| 70 | About 124% |
Break-even: the age where the totals cross
The break-even age is where the larger checks, added up, overtake the head start of the smaller ones. With the figures above, claiming at 67 overtakes 62 at about 79; claiming at 70 overtakes 62 at about 80 and 67 at about 82. Live well past those ages and waiting paid more in total; die before them and claiming early did.
The blind spots: nobody knows their own lifespan, the arithmetic assumes the early checks are spent rather than invested, and it ignores taxes (up to 85% of benefits are taxable once combined income passes $34,000 single or $44,000 joint) and the effect on a spouse. It is a lens, not an answer.
The trust-fund outlook
The 2026 Trustees Report projects that the retirement trust fund's reserves run out in the fourth quarter of 2032, after which incoming payroll taxes cover 78% of scheduled benefits; combined with the disability fund the date is 2034 and the share 83%. Every previous shortfall has been closed by Congress; plan on the cut anyway.
For the claiming decision it means less than the headlines suggest: a cut would apply to everyone collecting at the time, and a proportional cut keeps the ratios intact — 78% of $1,400, $2,000 and $2,480 is $1,092, $1,560 and $1,934. The outlook shrinks every path by the same share; it does not favor claiming early.
The factors the formula cannot weigh
| Factor | How it pulls |
|---|---|
| Health and family longevity | A long-lived family favors waiting; a serious diagnosis favors claiming |
| Need for cash now | If the check covers essentials, you claim when you need it |
| Still working | The earnings test withholds benefits before FRA; after FRA it disappears |
| Married | The higher earner's claiming age sets the survivor benefit the other spouse receives for life |
| Other savings | Savings make waiting possible; without them the decision is often made for you |
| Peace of mind | A larger guaranteed, inflation-adjusted check can be worth more to your sleep than the theoretical maximum |
This is how the math works; whether to claim early is a call for you and, if you want one, an adviser.
Where to act
Your my Social Security account at ssa.gov shows your PIA and the estimates at 62, FRA and 70 from your own record, and you apply online there in the months before you want benefits to start. If you claim and change your mind soon after, Form SSA-521 withdraws the application (you repay everything received, once), and at FRA you can suspend benefits to earn delayed credits until 70.
Three ages, one formula, and a decision the formula cannot make. The spousal and survivor lesson covers benefits that ride on another person's record, where one claiming age matters for two people.