Enter your birth year to find your exact Social Security full retirement age — plus how much your benefit shrinks if you claim early at 62 and how much it grows if you delay all the way to 70.
Your full retirement age is set by your birth year. Your birth month determines the exact month you reach it.
Scenario: Dana was born in 1965, so her FRA is 67. Her estimated PIA is $1,800 per month.
Claim at 62: 60 months early — 36 months × 5/9% (20%) plus 24 months × 5/12% (10%) = 30% reduction. Benefit = 70% of PIA = $1,260/month.
Claim at 67: $1,800/month — her full benefit at FRA.
Claim at 70: 36 months of delayed credits × 2/3% = 24% increase. Benefit = 124% of PIA = $2,232/month.
The difference between claiming at 62 and 70 is $972 per month — for life.
Scenario: Marcus was born in 1958, so his FRA is 66 years 8 months. His PIA is $2,200.
Claim at 70: 40 months after FRA × 2/3% per month = 26.7% delayed credit. Benefit = 126.7% of PIA ≈ $2,787/month.
Claim at FRA (66y8m): $2,200/month.
Claim at 62: 56 months early = 20% + 20 × 5/12% (8.3%) = 28.3% reduction ≈ $1,577/month.
Waiting from 62 to 70 adds roughly $1,210 per month — about 77% more income.
Scenario: Priya was born in 1955, so her FRA is 66 years 2 months. Her PIA is $1,500.
Claim at 64: 26 months early × 5/9% per month = 14.4% reduction. Benefit = 85.6% of PIA ≈ $1,283/month.
Claim at FRA: $1,500/month.
Even a modest 2-year early claim costs about 14% of her monthly benefit permanently. Claiming at exactly FRA avoids any reduction at all.
Your benefit is reduced by 5/9 of 1% for each of the first 36 months before FRA, plus 5/12 of 1% for each additional month. The reduction is permanent.
You earn 2/3 of 1% (8% per year) for each month you delay past FRA, up to age 70. Delaying from 67 to 70 adds 24% — 124% of PIA at 70.
FRA is 66 for those born 1943–1954, rising by two months per birth year from 1955 through 1959. For birth years 1937 and earlier this tool simplifies FRA to 65.
| Year of Birth | Full Retirement Age | Benefit at 62 (% of PIA) |
|---|---|---|
| 1937 or earlier* | 65 years, 0 months | 80.0% |
| 1938 | 65 years, 2 months | 79.2% |
| 1939 | 65 years, 4 months | 78.3% |
| 1940 | 65 years, 6 months | 77.5% |
| 1941 | 65 years, 8 months | 76.7% |
| 1942 | 65 years, 10 months | 75.8% |
| 1943–1954 | 66 years, 0 months | 75.0% |
| 1955 | 66 years, 2 months | 74.2% |
| 1956 | 66 years, 4 months | 73.3% |
| 1957 | 66 years, 6 months | 72.5% |
| 1958 | 66 years, 8 months | 71.7% |
| 1959 | 66 years, 10 months | 70.8% |
| 1960 or later | 67 years, 0 months | 70.0% |
*Simplified for this tool — the SSA applies special rules for cohorts born in 1937 and earlier. Benefit at 62 assumes you claim in the first month of eligibility.
Full Retirement Age is the age at which you become entitled to 100% of your Social Security retirement benefit — the amount known as your Primary Insurance Amount (PIA). When the Social Security system began in 1935, FRA was 65 for everyone. As life expectancy rose, Congress gradually raised it: FRA is 66 for people born from 1943 through 1954, climbs two months per birth year for 1955 through 1959, and is 67 for anyone born in 1960 or later.
Your FRA is the anchor for every claiming decision. Claim before it and your benefit is permanently reduced; claim after it and you earn delayed retirement credits of 8% per year up to age 70. Because the reduction or credit is applied month by month, even your exact birth month matters — it determines the precise month you reach FRA (for example, someone born in March 1960 reaches FRA in March 2027).
The difference between claiming at 62 and 70 can exceed 75% in monthly income. For a worker with a $2,000 PIA and an FRA of 67, that is roughly $1,400 per month at 62 versus $2,480 per month at 70 — every month for the rest of their life. Knowing your exact FRA is the first step in deciding which claiming strategy fits your health, finances, and life expectancy.
Claiming early gives you more years of checks, but each check is smaller — and the reduction never disappears. Claiming late gives you a much larger check, but you receive fewer checks. The break-even analysis helps you find where delaying starts to pay off: for someone with an FRA of 67, the cumulative benefits of claiming at 62 versus 67 typically cross around ages 78–80, and the 62 versus 70 comparison crosses around ages 80–82.
Your Primary Insurance Amount is the monthly benefit you receive at Full Retirement Age. The Social Security Administration computes it from your 35 highest-earning years, adjusted for historical wage growth. Years with no earnings count as $0, so working at least 35 years avoids dragging down your average. The resulting average is run through "bend points" — the formula pays 90% of the first portion of your average indexed monthly earnings, 32% of the next portion, and 15% of the remainder — which is why lower earners get a higher percentage of their pre-retirement income replaced.
Your PIA appears on your Social Security Statement, available free at ssa.gov/myaccount. The statement also shows your estimated benefit at 62, at FRA, and at 70 — the exact figures this calculator approximates. Enter that FRA-age amount into the PIA field above to convert the percentage results into dollars.
Note that your actual benefit can differ from an estimate if you keep working, if you receive a pension from work not covered by Social Security (the Windfall Elimination Provision), or if you claim a spousal or survivor benefit instead of your own.
⚠️ Disclaimer: This calculator provides estimates for educational purposes only. Your actual Social Security benefit depends on your complete earnings history, cost-of-living adjustments, and specific circumstances. The Social Security Administration (SSA) is the official source for your benefit amount and full retirement age. Always consult a qualified financial advisor before making Social Security claiming decisions.