Retirement Age Calculator

A retirement age calculator turns one date into a set of deadlines. For a person born March 15, 1965, full retirement age is 67, reached in March 2032. The first month Social Security can be paid is April 2027, at 70.42% of the full benefit. Medicare eligibility starts in March 2030, delayed retirement credits stop in March 2035 at 124%, and required minimum distributions begin in 2040, the year that person turns 75.

Two sister tools answer the money questions: the Social Security Calculator estimates your primary insurance amount (PIA) from your earnings, and the Taxable Social Security Calculator shows how much of the benefit the IRS can tax. Use this page when the question is when.

Full retirement age by birth year

Full retirement age (FRA), which SSA also calls normal retirement age, is the age at which your monthly benefit equals 100% of your PIA. It was 65 for decades. The 1983 amendments raised it in two-month steps for people born from 1938 on, until it reached 67 for the 1960 birth year. The table shows the schedule for everyone who can still claim, with the share of the PIA paid at key ages. Every percentage was computed with the SSA rules described in the next section.

Two columns sit under age 62 because you must be 62 for the entire month before a benefit can be paid for it. Only birthdays on the 1st or 2nd pass that test in the birthday month, so for most people the earliest figure is the one at 62 and 1 month. Watch the January 1 exception too: a person born January 1, 1960 belongs to the 1959 row.

How the percentages are calculated

SSA counts the months between the month your benefit starts and the month you reach full retirement age, then applies fixed monthly rates:

At a full retirement age of 67, claiming 60 months early costs 36 × 5/9% + 24 × 5/12% = 20% + 10% = 30%. Claiming 36 months late earns 36 × 2/3% = 24%. The spousal formula cuts harder in the three years before full retirement age (25/36 of 1% per month instead of 5/9) and never rises above 50%, which is why a spouse gains nothing by waiting past their own full retirement age. Delayed credits are smaller for older birth years: 7.5% a year for people born in 1941 or 1942, falling to 5.5% for 1933 and 1934.

Worked example: born March 15, 1965

Take a worker born March 15, 1965 whose statement shows a PIA of $2,000. The 1965 birth year means a full retirement age of 67. Social Security treats an age as reached on the day before the birthday, so this person reaches 67 on March 14, 2032, and March 2032 is the first month with an unreduced benefit.

The same rule puts the 62nd birthday on March 14, 2027 in legal terms. That falls after the 1st, so the worker is not 62 for all of March 2027, and the first payable month is April 2027, 59 months before full retirement age:

Waiting until March 2035, the month of the 70th birthday, adds 36 months of credits: $2,000 × 124% = $2,480 a month. The same person turned 59½ on September 15, 2024, can enroll in Medicare from December 2029 (eligibility starts in March 2030) and, being born after 1959, faces required minimum distributions from 2040, with the first one due by April 1, 2041. The gap between the earliest and the latest claim is $1,072 a month for life.

Worked example: born on the 2nd, and other birthday rules

Now take someone born September 2, 1966 with a PIA of $2,400. This person legally turns 62 on September 1, 2028, so they are 62 for all of September and can be paid for that month: the full 60 months early, exactly 70%, or $1,680 a month. Full retirement age arrives in September 2033 and age 70 in September 2036, when the benefit reaches $2,976. Their Medicare enrollment window runs from June to December 2031.

A birthday on the 1st shifts the full retirement age instead. Someone born on the 1st legally reaches every age on the last day of the previous month, so SSA figures the full retirement age as if they had been born a month earlier. The extreme case is January 1: a person born January 1, 1960 is treated as born in December 1959, gets the 1959 full retirement age of 66 and 10 months, and reaches it in October 2026 instead of in 2027. That person's first payable month at 62 was January 2022, 57 months early, at 71.25% of the PIA, and waiting until December 2029 earns 125.33%.

Month by month: what each claiming age pays

Most people think in whole years, but SSA counts months. This table follows the March 15, 1965 worker (full retirement age 67, PIA $2,000) in six-month steps. The spousal column shows what this person would receive as a spouse at the same age, as a share of the other spouse's PIA.

In the three years just before full retirement age, each year of waiting adds 6.67 points (12 × 5/9 of 1%); further out it adds 5 points a year (12 × 5/12 of 1%); after full retirement age it adds 8 points a year. In dollars, moving from 62 and 1 month to 67 raises this check by $592 a month, and moving from 67 to 70 adds another $480.

Medicare and the earnings test run on their own clocks

Medicare did not move when full retirement age did. Eligibility starts at 65, and the Initial Enrollment Period lasts seven months: the three months before the month you turn 65, that month, and the three months after. Coverage begins on the first of a month, and signing up before your birthday month lets Part B start in that month (a month earlier for premium-free Part A if your birthday is on the 1st). SSA advises applying within three months of your 65th birthday even if you delay Social Security, because waiting can raise Part B and Part D costs.

The earnings test applies only before full retirement age. For 2026, SSA withholds $1 of benefits for every $2 of earnings above $24,480. In the calendar year you reach full retirement age the threshold rises to $65,160 and the withholding falls to $1 for every $3, counting only the months before you reach that age. Withheld benefits are not lost: from full retirement age, SSA raises your monthly amount to account for the months it held back. Earnings in or after the month you reach full retirement age do not count at all.

Retirement ages outside Social Security

Social Security is only one of several age rules that decide when you can retire comfortably. The IRS charges a 10% additional tax on most withdrawals from IRAs and workplace plans before age 59½. A workplace plan such as a 401(k) has an extra exception when you leave your job in or after the year you turn 55 (50 for certain public safety employees), but that exception does not apply to IRAs. At the other end, required minimum distributions (RMDs) force withdrawals to begin:

The 1959 row rests on proposed IRS regulations because the statute names both 73 and 75 for that birth year. The first RMD can wait until April 1 of the year after you reach the starting age, but every later one is due by December 31, so delaying the first puts two taxable withdrawals into one year. The RMD Calculator works out the amounts.

How to use this calculator, and who it is for

1. Enter your birth date as it appears on your birth certificate. The day-before and January 1 rules are applied for you.
2. Add your PIA from your my Social Security statement, or leave it at 0 to see percentages only.
3. Read the headline card and the milestone list for full retirement age, the earliest payable month, Medicare, age 70 and your first RMD year.
4. Compare claiming ages in the table, then try any age in years and months in the explorer.

The tool is built for people in their 50s and early 60s choosing a claiming date, couples deciding who claims first, people close to 65 lining up Medicare, and adult children helping a parent confirm deadlines.

Key terms

• Full retirement age (normal retirement age): the age at which the benefit equals 100% of your PIA, 66 to 67 depending on birth year.
• Primary insurance amount (PIA): the monthly benefit payable at full retirement age, computed from your highest 35 years of indexed earnings.
• Reduction months: the months between your starting month and the month you reach full retirement age.
• Delayed retirement credits: increases of 2/3 of 1% per month after full retirement age for people born in 1943 or later, ending at 70.
• Attainment of age: under federal regulations you reach an age on the day before your birthday, which drives the 1st and 2nd of the month rules.
• Spousal benefit: up to 50% of the other spouse's PIA, reduced if started before your own full retirement age.
• Required minimum distribution: the yearly withdrawal the IRS requires from traditional retirement accounts after the starting age.

What changes your result

• Birth year: sets the full retirement age and the rate of delayed credits.
• Day of birth: the 1st moves your full retirement age a month earlier, the 2nd lets you claim in your 62nd-birthday month, and January 1 moves you into the previous birth year.
• Starting month: every month counts. Six months of waiting before full retirement age is worth 2.5 to 3.33 points, after it 4 points.
• Your PIA: scales every dollar figure but none of the percentages.
• The type of benefit: survivor benefits can start at 60 and use their own reduction schedule, and disability benefits follow separate rules. See the Survivor Benefits Calculator and the SSDI Calculator.
• A child in your care: a spouse caring for a child under 16, or a child who receives Social Security disability benefits, gets the spousal benefit without the early reduction.

Tips for picking a claiming date

• Count months, not birthdays. Starting in the month after full retirement age instead of the month before is worth 2/3 of 1% plus 5/9 of 1%, about 1.2 points.
• If you plan to start at 62, check whether your birthday is on the 1st or 2nd. Everyone else begins at 62 and 1 month.
• If you will keep working before full retirement age, compare your expected earnings with the 2026 limits of $24,480 and $65,160 before you claim.
• If you start between full retirement age and 70, expect a small raise the following January, when SSA adds the credits you earned earlier in your starting year.
• In a marriage, look at both lives: the Survivor Benefits Calculator shows how one spouse's claiming age carries over to the other.

Limitations

The calculator applies published age rules to your birth date. It does not read your earnings record, so dollar figures are only as good as the PIA you enter, and they exclude future cost-of-living adjustments, Medicare premiums and tax withholding. Widow and widower benefits, which can start at 60 on a reduction schedule SSA shifts by two birth years, disability benefits, the family maximum and the earnings test's effect on a given year are not modeled.

Related calculators

• Estimate your PIA from earnings with the Social Security Calculator.
• See how much of the benefit is taxable with the Taxable Social Security Calculator.
• Project how annual raises change the check with the COLA Calculator.
• Plan withdrawals after 73 or 75 with the RMD Calculator.
• Weigh claiming ages against longevity with the Life Expectancy Calculator.
• Check whether savings cover the gap with the Retirement Calculator, and estimate the tax on all of it with the Income Tax Calculator.

Sources

• Social Security Administration: Normal Retirement Age (schedule by birth year, January 1 rule).
• Social Security Administration: Starting Your Retirement Benefits Early (reduction at 62, 1st-of-month rule, Medicare timing).
• Social Security Administration: Early or Late Retirement? (5/9 and 5/12 rules, delayed credit table).
• Social Security Administration: Benefit Reduction for Early Retirement (62 throughout the month, born on the 2nd).
• Social Security Administration: Delayed Retirement Credits.
• Social Security Administration: Benefits for Spouses.
• Social Security Administration: Exempt Amounts Under the Earnings Test (2026 amounts).
• Code of Federal Regulations: 20 CFR 404.2(c)(4), attainment of age and 20 CFR 404.304(f), rounding.
• Medicare.gov: When does Medicare coverage start?
• Internal Revenue Service: Exceptions to tax on early distributions (age 59½, separation from service at 55).
• Internal Revenue Service: Internal Revenue Bulletin 2024-33 (T.D. 10001 final RMD regulations and REG-103529-23 for the 1959 birth year) and the RMD FAQs.