Social Security Calculator
Claiming Age Changes Your Benefit More Than Almost Any Other Decision
Social Security doesn't pay a fixed amount regardless of when you file. Claim before your Full Retirement Age (FRA) and the benefit is permanently reduced; wait past it, up to age 70, and the benefit is permanently increased. Because that adjustment compounds over what could be a 20- or 30-year retirement, the claiming-age decision is one of the largest levers in retirement income planning. This calculator applies the Social Security Administration's own formula to show exactly what a given claiming age is worth.
The Formula
Benefits start from the Primary Insurance Amount (PIA), calculated from Average Indexed Monthly Earnings (AIME) using the SSA's 2024 bend points:
+ 32% of AIME between $1,174 and $7,078
+ 15% of AIME above $7,078
That PIA is the benefit paid at Full Retirement Age. Claiming earlier applies a reduction of 5/9 of 1% per month for the first 36 months early and 5/12 of 1% per month beyond that; claiming later applies an increase of 2/3 of 1% per month (8% per year) up to age 70.
Where This Calculation Matters
- Deciding whether to claim early — claiming at 62 instead of a 67 FRA cuts the monthly benefit by roughly 30%, permanently.
- Weighing delayed retirement credits — each year you delay past FRA up to 70 adds about 8% to the monthly benefit, one of the few guaranteed, inflation-protected returns available.
- Coordinating with a spouse's benefit — couples often use one spouse's claiming-age flexibility to manage household cash flow while the other delays for a larger benefit.
- Bridging the gap to Medicare — since Medicare eligibility starts at 65 regardless of Social Security claiming age, some retirees plan around that mismatch.
Benefit as a Percentage of the Full Retirement Age Amount
| Claiming age | % of FRA benefit |
|---|---|
| 62 | 70.0% |
| 63 | 75.0% |
| 64 | 80.0% |
| 65 | 86.7% |
| 66 | 93.3% |
| 67 (FRA) | 100.0% |
| 68 | 108.0% |
| 69 | 116.0% |
| 70 | 124.0% |
Figures assume a Full Retirement Age of 67, which applies to everyone born in 1960 or later.
How to Use This Calculator
- Enter your Average Indexed Monthly Earnings (AIME) — this appears on your Social Security statement, or can be estimated from your career earnings history.
- Enter the age at which you plan to claim, between 62 and 70.
- Enter your Full Retirement Age if it differs from the default of 67.
- Select Calculate to see your Primary Insurance Amount and the estimated monthly and annual benefit at your chosen claiming age.
Related Calculations
Combine this benefit with a pension using the Retirement Income Calculator, or check how much additional savings you'll need with the Retirement Planner.