Social Security Benefits Calculator

Social Security retirement benefits are one of the largest income sources in American retirements, yet most people never verify what their benefit will actually be. The benefit is calculated from your 35 highest-earning years, indexed for inflation, then run through a progressive formula that replaces a higher share of low earners' income.

The key lever you control is your claim age. Benefits grow roughly 6–8% for every year you delay past your Full Retirement Age (FRA, currently 67 for those born after 1960), up to age 70. Claiming early at 62 permanently cuts your monthly benefit by up to 30%. This calculator lets you compare outcomes at different claim ages to see which maximises your lifetime payout.

For most people, the biggest decision is when to start. The adjustment isn't a temporary cut that catches up later: it sets the level of your benefit for life, and possibly for a surviving spouse after you.

For anyone born in 1960 or later, full retirement age is 67. Claiming at the earliest possible age of 62 permanently reduces the benefit to 70% of the full amount. Delaying to 70 raises it to 124%. On a full benefit of $2,000 a month, that is $1,400 at 62, $2,000 at 67, and $2,480 at 70, the same earnings record producing a 77% difference between the extremes.

• Early reduction is applied at 5/9 of 1% per month for the first 36 months, then 5/12 of 1% per month beyond that.
• Delayed retirement credits build up at 2/3 of 1% per month, which is 8% a year, and stop completely at 70, so there's nothing to gain by waiting longer.
• The adjustment is applied before annual cost-of-living increases, so a larger starting benefit also compounds those increases from a higher base.

The usual way to compare claiming ages is to ask when the cumulative totals cross over. On the figures above, claiming at 70 overtakes claiming at 62 at around age 80, and overtakes claiming at 67 at around age 83. Below those ages the earlier claim has paid more in total; above them the later claim has.

The trouble is that this treats the decision as a bet on how long you'll live, when it's more useful to think of delaying as insurance. The risk you're protecting against isn't dying early. It's living a long time after your savings have run low, and a higher lifelong benefit protects you in exactly the situation that break-even thinking counts as a win.

• Claiming before full retirement age while still working can reduce benefits further through the earnings test, though those amounts are restored later.
• Spousal and survivor benefits are affected by the higher earner's claiming age, so the decision is often a household one rather than an individual one.
• Your health, other income and needing money now are all good reasons to claim early, and none of them show up in a break-even chart.

The SSA adjusts the bend points and the earnings cap each year, and the figures used here are for 2026. Check your own statement at ssa.gov for your real earnings record.