Social Security Estimator
Estimates your monthly Social Security retirement benefit based on average earnings, years worked, and the age at which you claim benefits. Use it when deciding whether to claim early, at full retirement age, or delay to 67 or beyond.
Last updated: September 2026
Formula below · 2 sources (ssa.gov, Wikipedia) · Updated Sep 2026
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About this calculator
This estimator uses the real progressive benefit formula, not a flat percentage. It follows the Social Security Administration's benefit formula with 2026 figures. Average Indexed Monthly Earnings (AIME) = your average annual earnings over your 35 highest years (capped at the 2026 taxable maximum of $184,500) ÷ 12; if you worked fewer than 35 years, the missing years count as zeros, so AIME is scaled by years ÷ 35. The Primary Insurance Amount (PIA, your benefit at full retirement age) = 90% of AIME up to $1,286 + 32% of AIME from $1,286 to $7,749 + 15% of AIME above $7,749 (the 2026 bend points), capped at $4,152, the 2026 maximum at full retirement age. Full retirement age is 67 for anyone born in 1960 or later. Claiming early cuts the benefit by 5/9 of 1% per month for the first 36 months and 5/12 of 1% per month beyond that (62 → 70% of PIA, 65 → 86.67%); delaying past 67 adds 2/3 of 1% per month (8% a year) up to 70 (124%). Enter earnings already adjusted for wage growth (your SSA statement shows indexed earnings); using raw past salaries understates the benefit. Not modeled: spousal and survivor benefits, the earnings test if you work while claiming early, cost-of-living increases after 2026, and taxes on benefits.
How to use
Suppose your average annual earnings (wage-indexed) are $60,000, you've worked 30 years, and plan to claim at 67. Step 1: AIME = $60,000 ÷ 12 × 30/35 = $4,285.71 (five zero years pull the average down). Step 2: PIA = 90% × $1,286 + 32% × ($4,285.71 − $1,286) = $1,157.40 + $959.91 = $2,117.31. Step 3: At 67 you receive 100%: $2,117.31/month. If instead you claim at 62 (70% of PIA): $1,482.12/month — about $635 less each month for life. Waiting until 70 (124%): $2,625.46/month.
Frequently asked questions
How does claiming Social Security at 62 versus 67 affect my monthly benefit?
Claiming at 62, the earliest eligible age, permanently reduces your monthly benefit by 30% compared with waiting until full retirement age (67 for those born in 1960 or later). The reduction is 5/9 of 1% for each of the first 36 months early and 5/12 of 1% for each additional month. While you receive checks five years sooner, the break-even point — where total cumulative benefits from waiting surpass total benefits from claiming early — is typically around age 78–80. If you are in good health and expect to live past 80, delaying is usually the mathematically superior choice.
Why does Social Security use 35 years of earnings to calculate your benefit?
The Social Security Administration calculates your Primary Insurance Amount (PIA) based on your Average Indexed Monthly Earnings (AIME), which averages your highest 35 years of inflation-adjusted earnings. If you worked fewer than 35 years, zero-earning years are included in the average, which pulls your benefit down. Working additional years replaces low or zero-earning years with higher ones, boosting your average. This is why working even a few extra years near the end of a career — when earnings tend to be highest — can meaningfully increase your lifetime Social Security income.
What factors most affect the accuracy of a Social Security benefit estimate?
The biggest driver of accuracy is using your actual lifetime earnings record, which you can access at ssa.gov/myaccount. This estimator uses average annual earnings as a proxy, which may differ from your real indexed earnings history. The claiming age is also critical: every year you delay past 67 (up to age 70) adds roughly 8% to your monthly benefit. Additionally, spousal benefits, survivor benefits, windfall elimination provisions for government workers, and cost-of-living adjustments all affect your real payout in ways a simplified estimator cannot fully capture.