Full Retirement Age Calculator
Your Social Security full retirement age by birth year, plus the benefit at any claiming age from 62 to 70.
What it does
Full retirement age, often shortened to FRA, is the age at which Social Security pays the full primary insurance amount. It is not the same as the earliest age to claim, which is 62, or the age at which delayed credits stop, which is 70. The FRA itself depends on the year you were born.
For people born from 1943 through 1954, full retirement age is 66. It then rises by two months for each birth year through 1959, reaching 66 and 10 months for that group. Anyone born in 1960 or later has a full retirement age of 67. The calculator reproduces that table and works in months.
Claiming before FRA reduces the benefit permanently. The reduction is 5/9 of 1% for each of the first 36 months before FRA and 5/12 of 1% for each additional month. Someone with an FRA of 67 who claims at 62 takes 60 months early: 36 months at the steeper rate and 24 at the smaller one, for a 30% cut.
Waiting past FRA works the other way. Delayed retirement credits add 2/3 of 1% per month, which is 8% a year, until age 70. After 70 there is no further increase. For an FRA of 67, waiting to 70 raises the check by 24%, from $2,000 to $2,480 in the default example.
The monthly difference is only half the decision. Claiming early means more checks, while waiting means larger checks for fewer years. A break even comparison shows how long the larger check takes to catch up. Taxes, Medicare premiums, work earnings before FRA, and survivor benefits can all shift the answer, so the tool is a starting point rather than a recommendation.
How to use
- Enter the year you were born to set your full retirement age.
- Enter the age, including months, when you plan to start benefits.
- Type the monthly benefit shown on your Social Security statement at full retirement age.
- Read the full retirement age first, then the share of the full benefit.
- Compare the monthly and yearly amounts at two or three claiming ages.
- Check the result against your my Social Security account before making a decision.
Formula
- FRA months
- Full retirement age converted to months, for example 804 for age 67.
- m
- Months between the claiming age and full retirement age.
- 5/9
- Percent reduction per month for the first 36 months before FRA.
- 5/12
- Percent reduction per month beyond 36 months before FRA.
- 2/3
- Percent credit per month of delay after FRA, up to 36 months.
- PIA
- Primary insurance amount, the monthly benefit at full retirement age.
The reduction and credit percentages are rounded in the SSA tables but exact in the benefit formula used here. Claiming ages are converted to whole months, so 66 years and 8 months is 800 months. Delayed credits stop at 70, and early claiming cannot start before 62. The tool does not apply cost of living adjustments, Medicare premiums, or taxes.
Worked example
Example: born in 1965, $2,000 full benefit, claiming at 62
Defaults: birth year 1965, claim age 62, full benefit $2,000 per month.
- Full retirement age for a 1965 birth year is 67, which is 804 months.
- Claiming at 62 is 60 months early.
- First 36 months: 36 x 5/9 = 20% reduction.
- Remaining 24 months: 24 x 5/12 = 10% reduction.
- Total reduction 30%, so the factor is 0.70, or 70.0% of the full benefit.
- Monthly benefit: $2,000 x 0.70 = $1,400.00. Yearly: $16,800.00.
Reference table
| Claim age | Share of full benefit | Monthly | Yearly |
|---|---|---|---|
| 62 | 70.0% | $1,400.00 | $16,800.00 |
| 65 | 86.7% | $1,733.33 | $20,800.00 |
| 67 | 100.0% | $2,000.00 | $24,000.00 |
| 70 | 124.0% | $2,480.00 | $29,760.00 |
Limits
- Assumes a single retirement benefit and does not model spousal, survivor, or disability benefits.
- Ignores cost of living adjustments, Medicare Part B premiums, and federal or state income tax.
- Does not apply the earnings test that can withhold benefits before full retirement age.
- Uses the statement benefit as given; actual benefits depend on the full earnings record.
Common mistakes
- Assuming full retirement age is 65 for everyone.
- Expecting delayed credits to keep growing after age 70.
- Comparing monthly checks without looking at the number of years collected.
- Forgetting that working before FRA can temporarily reduce benefits.
- Treating the estimate as a guarantee instead of checking the official statement.
Try it yourself
Quick checks. Answers sit tucked under each question.
Born in 1958, claiming at 66, with a $2,000 full benefit?
Full retirement age 66 yr 8 mo, adjustment 95.6% of full benefit, monthly $1,911.11, annual $22,933.33.
Born in 1965, claiming at 70, with a $2,000 full benefit?
Full retirement age 67, adjustment 124.0% of full benefit, monthly $2,480.00, annual $29,760.00.
Born in 1950, claiming at 62, with a $2,000 full benefit?
Full retirement age 66, adjustment 75.0% of full benefit, monthly $1,500.00, annual $18,000.00.
Questions
What is full retirement age?
The age at which Social Security pays your full primary insurance amount. It ranges from 65 to 67 depending on birth year.
Can I claim before full retirement age?
Yes, starting at 62, but the benefit is reduced for life. At 62 with an FRA of 67, the cut is 30%.
How much do I gain by waiting?
Two thirds of 1% per month, or 8% a year, until age 70. There is no increase for waiting longer.
Does claiming early affect my spouse?
It can. A spousal or survivor benefit may be based on the higher of the two records, and early claiming can reduce what a survivor receives.
Is the reduction permanent?
Yes. The early claiming reduction stays in the benefit for life, apart from cost of living adjustments applied to the reduced amount.
Where do I find my full benefit amount?
In your my Social Security account or on the statement SSA mails each year. The figure is the primary insurance amount at full retirement age.
Sources
- SSA: Starting your retirement benefits early
- SSA: Delayed retirement credits
- SSA: Full retirement age by birth year