Social Security Timing Calculator

How the claiming age changes your benefit

Social Security pays a base amount at your full retirement age, which is 67 for anyone born in 1960 or later and between 66 and 67 for those born from 1955 to 1959. Claim before that and the benefit is reduced permanently: 5/9 of 1% for each of the first 36 months early, then 5/12 of 1% a month beyond that, which works out to 30% less at 62 for someone with a full retirement age of 67. Claim after it and the benefit grows by 8% a year, or two-thirds of 1% a month, until 70, for a maximum of 24% more. Nothing is gained by waiting past 70.

Those percentages are fixed by law and do not depend on how much you earned, so the trade-off is the same for everyone: a smaller check for more years, or a larger check for fewer. What differs is how long you expect to collect, what else you have to live on in the meantime, and whether someone else's benefit depends on yours.

Reading the break-even age

The break-even age is the point at which the total received from a later claim overtakes the total received from an earlier one. For 62 against full retirement age it typically falls around 78 to 80; for full retirement age against 70 it falls around 82 to 83. Live past the break-even and the later claim paid more in total; die before it and the earlier claim did.

That framing has limits. The calculator compares nominal totals, not present values, and it ignores the tax you pay on benefits and what you might have earned on the money had you taken it early and invested it. Those adjustments push the break-even a few years later. Working against them is the cost-of-living adjustment, which is applied to whatever base you locked in, so the larger benefit compounds from a higher starting point, and the fact that the higher benefit is what a surviving spouse inherits.

Why married couples should not decide one at a time

When one spouse dies the survivor keeps the larger of the two benefits and loses the smaller. That makes the higher earner's claiming age a decision about the survivor's income for the rest of their life, not just about the higher earner's own break-even. The usual result is that the higher earner delays to 70 to lock in the larger survivor benefit, while the lower earner claims earlier to bring income in while they wait. Spousal benefits complicate this further: a spouse with little earnings history can receive up to half the other's full retirement age benefit, but only once the higher earner has filed, which is one reason couples sometimes stagger their claims.

Claiming while still working

Before full retirement age, Social Security withholds $1 of benefits for every $2 you earn above an annual limit ($24,480 in 2026), and $1 for every $3 above a higher limit in the year you reach full retirement age. The withheld amounts are not lost, they are credited back as a higher benefit later, but the cash-flow effect is real, and it usually means that claiming early while still working full time makes little sense.

Taxes and the rest of the plan

Up to 85% of a Social Security benefit is taxable once your combined income (adjusted gross income plus tax-exempt interest plus half the benefit) passes $34,000 single or $44,000 joint, thresholds that have never been indexed for inflation. Delaying benefits keeps those years' taxable income low, which is exactly the window in which a Roth conversion is cheapest. Coordinating the two, and the required minimum distributions that begin at 73 or 75, is usually worth more than the claiming decision on its own.

If you worked in a job not covered by Social Security

For decades, public employees with a pension from non-covered work had their Social Security benefit cut by the Windfall Elimination Provision, and their spousal or survivor benefit cut or eliminated by the Government Pension Offset. Around 3.2 million people were affected. Both provisions were repealed by the Social Security Fairness Act, retroactive to January 2024.

This calculator estimates an unreduced benefit, which is now the correct basis for that group. If you last ran these numbers before 2025 and assumed a reduction, the result you got was too low. The repeal also revived spousal and survivor benefits that many people stopped planning around entirely, and those are frequently the larger part of the decision for a married couple.

The details, including the retroactivity split that determines how much back pay you receive and the tax election that can reduce the bill on a lump sum, are in our guide to the WEP and GPO repeal.