Social Security break-even calculator: claim at 62, 67, or 70?

Last reviewed September 2026 · 6 min read

“Social Security break-even age” is the number everyone reaches for when deciding whether to claim at 62, wait for full retirement age, or hold out to 70: the age at which the bigger checks from waiting have paid back the checks you gave up by not claiming early. Below is a break-even calculator that does the exact month-by-month math — plus why break-even alone is a worse guide than it looks.

How the monthly benefit changes with claiming age

Your benefit is 100% of your primary insurance amount (PIA) only if you claim at full retirement age (FRA) — 67 for everyone born 1960 or later, graduated down from 66 for cohorts born 1943–1959^[2]. Claim earlier and the benefit is reduced 5/9 of 1% for each of the first 36 months before FRA, then 5/12 of 1% per month beyond that — 30% off at 62 for FRA 67^[1]. Claim later and you earn delayed retirement credits of 2/3 of 1% per month (8% per year) for every month past FRA, up to age 70, where the increase stops for good^[3][6]. The calculator below applies this exact formula to your own numbers, using the same claim-factor function the Deorbit Plan simulator runs.

What “break-even” means

Claim early and you collect smaller checks for more years; claim late and you collect bigger checks for fewer years. Break-even is the age where the running total from the later claim first overtakes the running total from the earlier one. Live past it and waiting paid off; die before it and claiming early paid off. For the classic 62-vs-70 comparison at FRA 67 with no assumed investment return, break-even lands in your early 80s — squarely inside current life-expectancy ranges for a 62-year-old^[5], which is exactly why the decision is genuinely close for most people.

Why break-even alone is the wrong lens

Break-even treats claiming as a bet on your exact date of death, but that’s not really the decision. Delaying is longevity insurance — it pays out precisely in the scenario a portfolio can’t insure against on its own: living a long time. A single break-even age also ignores at least four things a full plan has to weigh:

• Survivor benefits. In a couple, the higher earner’s claiming age sets the floor the survivor lives on for the rest of their life after the first death — see the widow’s-penalty filing transition, where that surviving check often has to cover a household that just lost a filing-status bracket.
• Taxes. Up to 85% of Social Security can become taxable once other income pushes provisional income over statutory thresholds — see the Social Security tax torpedo — so claim timing changes lifetime tax, not just lifetime benefits.
• The earnings test. Claim before FRA while still working and benefits can be withheld above an earnings threshold (though not lost — see the retirement earnings test), which changes the early-claiming math for anyone not fully retired.
• Portfolio sequencing. Delaying usually means spending down savings harder in your 60s, which interacts with market sequence risk in ways a break-even age never sees.

What this calculator ignores

On top of the four factors above, this tool assumes: no taxes on the benefit itself; no spousal or survivor benefits (it’s single-person, single-benefit math only); no earnings-test withholding; and that COLAs are neutral between the two ages because they apply to the same underlying benefit formula regardless of when you claim^[4] — true in real (inflation-adjusted) terms, which is why every number here is held in today’s dollars rather than projected nominal ones.

Try it in Deorbit Plan

The calculator above answers one question in isolation. The Strategy Lab’s claim-age sweep runs the same decision through your actual household — taxes, Medicare, spending, and market risk included — and scores it on success rate, lifetime tax, and estate, not a single break-even year.

Educational content only — not financial, tax, or investment advice.

See how this plays out with your own numbers. Try it in the simulator →