Social Security Calculator
Estimate your monthly Social Security retirement benefit from your birth year, current salary, and claiming age. A rough 2026-policy estimate — not an official SSA calculation.
How It's Calculated
Formula
\text{proxyAIME} = \frac{\min(\text{Salary}, \text{MaxTaxableEarnings})}{12} \qquad \text{PIA} = 0.90 \times \min(\text{proxyAIME}, B_1) + 0.32 \times \text{(amount between } B_1 \text{ and } B_2\text{)} + 0.15 \times \text{(amount above } B_2\text{)}This is a rough estimate that assumes your current annual salary is representative of your career earnings. Actual Social Security benefits depend on your earnings history and SSA wage indexing — the real Social Security Administration formula uses your Average Indexed Monthly Earnings (AIME), the average of your highest 35 years of wage-indexed earnings, not a single year's salary. This calculator does not collect a 35-year earnings history; instead it caps your current annual salary at the 2026 Social Security maximum taxable earnings ($184,500) and divides by 12 to form a simplified monthly earnings proxy. That proxy is run through the same bend-point formula the SSA uses for your Primary Insurance Amount (PIA): 90% of the first $1,286, 32% of the amount between the two 2026 bend points, and 15% of any amount above the second bend point. Your PIA is the benefit payable starting exactly at your full retirement age (FRA), which this calculator determines from your birth year using the SSA's official FRA table (66 for those born 1943-1954, gradually rising to 67 for those born 1960 or later). Claiming before FRA permanently reduces your benefit (5/9 of 1% per month for the first 36 months early, 5/12 of 1% per month beyond that); claiming after FRA permanently increases it via delayed retirement credits (2/3 of 1% per month, 8% per year) up to age 70, after which credits stop accruing. This estimate does not project future cost-of-living adjustments (COLAs), and salary above the maximum taxable earnings cap never increases the estimate. For your actual benefit, check your real earnings record at ssa.gov.
Worked Examples
Salary below the first bend point: $10,000/year, claiming at FRA
- Capped salary: $10,000 (below the 2026 maximum taxable earnings, so no cap applied).
- Monthly earnings proxy: $10,000 / 12 = $833.33.
- Entirely below the first bend point, so PIA = 90% x $833.33 = $750.00.
- Claiming exactly at full retirement age applies neither reduction nor credit: estimated benefit = $750.00.
Salary crossing both bend points, claiming early at 62 (FRA 67)
- Salary $90,000/year -> monthly earnings proxy $7,500 (below the 2026 maximum taxable earnings cap).
- PIA: 90% of the first $1,286, plus 32% of the amount up to $7,749, plus 15% of the remainder.
- Claiming at 62 with FRA 67 is 60 months early: the first 36 months reduce the benefit at 5/9 of 1% each, and the remaining 24 months at 5/12 of 1% each — a combined reduction of 30%.
- Estimated benefit at 62 = PIA x 70%.
Salary above the maximum taxable earnings, claiming late at 70 (FRA 66y8m)
- Salary above the 2026 maximum taxable earnings ($184,500) is capped at that maximum before the proxy is computed — additional salary above the cap does not increase the estimate.
- Monthly earnings proxy = maximum taxable earnings / 12, run through the bend-point formula for PIA.
- Claiming at 70 with FRA 66y8m is 40 months of delayed credits (2/3 of 1% per month) = a 26.67% increase.
- Estimated benefit at 70 = PIA x 126.67%.
Frequently Asked Questions
Is this an official Social Security benefit calculation?
No. This is a rough estimate that assumes your current annual salary is representative of your career earnings. Actual Social Security benefits depend on your earnings history and SSA wage indexing. For your official estimate, create or sign in to a my Social Security account at ssa.gov.
Why does this calculator use my current salary instead of my full earnings history?
The Social Security Administration's real formula uses your Average Indexed Monthly Earnings (AIME) — the average of your highest 35 years of wage-indexed earnings. Collecting a full 35-year earnings history is out of scope for this V1 calculator, so it uses your current annual salary as a simplified stand-in. This will overstate your estimate if your career-average earnings are lower than your current salary, and understate it if they're higher.
Why is my salary capped?
Social Security tax only applies up to a maximum taxable earnings amount each year (for 2026, $184,500) — earnings above that cap are not taxed for Social Security and do not count toward your benefit formula. This calculator applies the same cap: any salary you enter above the maximum taxable earnings amount is treated as if it were exactly at the cap, and does not increase your estimate further.
How is my full retirement age (FRA) determined?
From your birth year, using the SSA's official table: FRA is 66 for anyone born 1943-1954, then gradually increases by two months per birth year for those born 1955-1959, reaching 67 for anyone born 1960 or later. This calculator does not assume FRA 67 for everyone.
What happens if I claim before or after my full retirement age?
Claiming before FRA permanently reduces your benefit: 5/9 of 1% per month for the first 36 months early, and 5/12 of 1% per month for any additional months earlier than that. Claiming after FRA permanently increases your benefit through delayed retirement credits of 2/3 of 1% per month (8% per year), but only up to age 70 — credits stop accruing after that, so there's no benefit to delaying past 70.
Does this account for future cost-of-living adjustments (COLAs)?
No. This estimate reflects today's benefit formula and does not project future annual COLAs, which the SSA applies to benefits already in payment (and, separately, to the bend points and wage base each year going forward). Your actual future benefit will differ from this estimate for that reason alone, in addition to the earnings-history simplification above.