Retirement Age Calculator

Q: Why does the benefit table show an extra row like 66 yr 8 mo?

That extra row is your exact Full Retirement Age . If you were born from 1955 to 1959, your FRA falls between birthdays, so it is not a whole year. The calculator adds that row so you can see the benefit at your true 100% age, not just at the round ages.

Q: What does the green Best Lifetime Value tag mean?

It marks the claiming age that pays the most total dollars by the lifespan you entered. It is not advice. If you live longer or shorter than you guessed, a different age would win. Change the lifespan and watch the tag move.

Q: Do the lifetime totals take out taxes or Medicare premiums?

No. All amounts are before taxes and before Medicare Part B premiums . Your real deposit can be lower. Medicare premiums are usually taken straight out of your monthly check starting at 65.

Q: How do I find my benefit amount at Full Retirement Age?

Create or sign in to a my Social Security account at ssa.gov. Your statement lists an estimated monthly amount at each age. Use the number shown for your Full Retirement Age. If you skip this box, the calculator uses $1,800.

Q: Can I test a claiming age with months, like 63 and 4 months?

Yes. The Explore a Claiming Age slider moves one month at a time from 62 to 70. Your monthly benefit, lifetime total, and the step-by-step math all update as you drag it.

Q: What does nominal future dollars mean when COLA is turned on?

It means the totals are the actual dollar amounts you would receive in future years, with yearly raises added. Those future dollars buy less than today's dollars. With COLA off, every number stays in today's dollars.

Retirement Age Calculator

Updated Jul 31, 2026 By Jehan Wadia

Introduction

This Retirement Age Calculator shows you when you can start Social Security and how much money you would get each month. Type in your birth date, your benefit amount at Full Retirement Age, and how long you think you will live. The calculator does the rest.

Your Full Retirement Age, or FRA, depends on the year you were born. For most people born in 1960 or later, it is 67. You can start as early as age 62, but your monthly check gets smaller. You can wait until age 70 and your check gets bigger. This tool shows you both sides so you can pick what fits your plan.

Here is what you get:

Your exact Full Retirement Age and the date you reach it
Your monthly benefit at every claiming age from 62 to 70
Your total lifetime benefits for each choice
Break-even ages that show when waiting starts to pay off
Charts, a spousal benefit option, and a cost-of-living (COLA) option

You also get a step-by-step solution, so you can see the math behind every number. Use it to compare claiming early against waiting, then check your real numbers at ssa.gov. For a deeper look at monthly amounts, try the Social Security Calculator, and to see how your whole nest egg holds up, run the Retirement Calculator.

How to use our Retirement Age Calculator

Enter your birth date, your monthly Social Security benefit at full retirement age, and how long you expect to live. The calculator shows your full retirement age (FRA), your monthly benefit at each claiming age from 62 to 70, your lifetime totals, break-even ages, and a step-by-step math breakdown.

Date of Birth: Pick your birth month, day, and year. This sets your full retirement age and your current age. If you are not sure of your exact age in years and months, the Age Calculator can confirm it.

Monthly Benefit at FRA: Type the monthly amount you would get at your full retirement age. You can find this number on your Social Security statement at ssa.gov. Leave it blank to use $1,800.

Expected Lifespan: Type an age from 62 to 100, or drag the slider. This is used for lifetime totals and break-even ages. The Life Expectancy Calculator gives you a reasonable starting number if you are guessing.

Include Spousal Benefits: Click this button if you are married. Then enter your spouse's monthly benefit at their FRA. The tool checks if you get a spousal top-up. For a full breakdown of that piece, see the Social Security Spousal Benefits Calculator.

Adjust for Inflation (COLA): Click this button to add yearly raises. Then set the COLA rate from 0% to 5% by typing it or dragging the slider. The COLA Calculator and the Inflation Calculator help you pick a rate you believe in.

Explore a Claiming Age slider: Drag this slider to any age between 62 and 70, month by month. Your monthly benefit, lifetime total, and math steps update right away.

Calculate, Reset, and Print: Click Calculate to run the numbers, Reset to start over with the default values, or Print Summary to save a copy of your results.

Retirement Age and Social Security Benefits

Your retirement age is the age you start taking Social Security. You can start as early as 62 or wait as late as 70. The age you pick changes your monthly check for the rest of your life. Start early and the check is smaller. Wait longer and the check is bigger. If you are still deciding on a target date, the When Can I Retire Calculator works backward from your savings instead of your birth year.

What Is Full Retirement Age (FRA)?

Full Retirement Age is the age when you get 100% of the benefit you earned. This amount is called your primary insurance amount, or PIA. Your FRA depends on the year you were born.

Born 1943–1954: FRA is 66
Born 1955–1959: FRA is 66 plus 2 months for each year after 1955
Born 1960 or later: FRA is 67

In the United Kingdom the same idea is called state pension age; the State Pension Age Calculator covers those rules.

Claiming Early Cuts Your Check

If you claim before your FRA, Social Security lowers your benefit. The cut is 5/9 of 1% each month for the first 36 early months. After that, it drops another 5/12 of 1% per month. Someone with an FRA of 67 who claims at 62 gets only 70% of their full amount. That cut does not go away later. If you are aiming to stop work well before 62, the Early Retirement Calculator and the FIRE Calculator show how to bridge the gap with savings.

Waiting Grows Your Check

If you wait past your FRA, you earn delayed retirement credits. These add 8% per year (about 0.667% each month) until age 70. With an FRA of 67, waiting to 70 gives you 124% of your full benefit. Credits stop at 70, so there is no reason to wait longer.

The Break-Even Age

A smaller check that starts early adds up fast at first. A bigger check that starts later needs time to catch up. The age when the bigger check passes the smaller one in total dollars is the break-even age. It usually lands in the late 70s or early 80s. If you expect a long life, waiting often pays more. If your health is poor or you need the money now, claiming early can make more sense. The Social Security Break-Even Calculator compares any two claiming ages side by side.

Spousal Benefits

A married person can get up to 50% of their spouse's FRA benefit if that is more than their own benefit. Social Security pays your own benefit first, then adds the difference as a top-up. Claiming before your FRA shrinks the spousal part too. Delayed credits never apply to spousal benefits, so waiting past FRA does not raise that piece.

Cost-of-Living Adjustments (COLA)

Social Security raises benefits most years to keep up with prices. This is the COLA. Because it is a percent increase, a bigger starting benefit also grows by bigger dollar amounts over time. The CPI Inflation Calculator shows how much buying power a dollar loses over a long retirement.

Other Things That Matter

Still working? If you claim before FRA and earn over the yearly limit, Social Security holds back part of your check. The money comes back later in higher payments. Check your net pay with the Paycheck Calculator.
Taxes. Up to 85% of your benefit can be taxed if your other income is high. Run the numbers with the Taxable Social Security Benefits Calculator or the Social Security Tax Calculator, and check your bracket with the Tax Bracket Calculator.
Medicare. Medicare starts at 65, no matter what your FRA is.
Your record. Your benefit is based on your 35 highest earning years. Check your real numbers at ssa.gov.
Other income sources. Social Security is one leg of the stool. Model the rest with the 401k Calculator, the Roth IRA Calculator, the Pension Calculator, and the Annuity Calculator.
Required withdrawals. Once you reach the RMD age, the IRS makes you tap tax-deferred accounts; see the RMD Calculator.
Making it last. Pair your claiming choice with a spending plan using the Retirement Withdrawal Calculator, the 4% Rule Calculator, or the How Long Will My Money Last Calculator.
Government and military service. Federal and military workers should also check the FERS Retirement Calculator, the Federal Retirement Calculator, and the Military Retirement Calculator.
How much you need. Set a savings target with the How Much Do I Need To Retire Calculator and track progress using the Net Worth Calculator.

Formulas used

Early claiming reduction factor

f_{\text{early}} = 1 - \left[\min(36,\, n_e)\cdot\frac{5}{9}\% + \max(0,\, n_e - 36)\cdot\frac{5}{12}\%\right],\quad n_e = \text{FRA}_m - C_m

Delayed retirement credit factor

f_{\text{late}} = 1 + n_\ell \cdot \frac{\text{DRC}_{\text{annual}}}{12},\quad n_\ell = \min(C_m,\,840) - \text{FRA}_m

Monthly benefit at chosen claiming age

B = B_{\text{FRA}} \times f

Number of monthly payments to expected lifespan

N = (L_{\text{age}} \times 12) - C_m

Lifetime total with annual COLA compounding from age 62

L = \sum_{m=C_m}^{L_{\text{age}}\cdot 12 - 1} B \times (1 + c)^{\left\lfloor \frac{m - 744}{12} \right\rfloor}

Spousal benefit top-up and total monthly benefit

T = B + \max\!\left(0,\; 0.50\,B^{sp}_{\text{FRA}} - B_{\text{FRA}}\right) \times f_{sp},\quad f_{sp} = 1 - \left[\min(36,\, n_e)\cdot\frac{25}{36}\% + \max(0,\, n_e - 36)\cdot\frac{5}{12}\%\right]

Break-even age (first month cumulative later claim exceeds earlier claim)

m^{*} = \min\left\{ m : \sum_{k=C_B}^{m} B_B (1+c)^{\left\lfloor \frac{k-744}{12}\right\rfloor} > \sum_{k=C_A}^{m} B_A (1+c)^{\left\lfloor \frac{k-744}{12}\right\rfloor} \right\} + 1

Frequently asked questions

Why does the benefit table show an extra row like 66 yr 8 mo?

That extra row is your exact Full Retirement Age. If you were born from 1955 to 1959, your FRA falls between birthdays, so it is not a whole year. The calculator adds that row so you can see the benefit at your true 100% age, not just at the round ages.

I was born on January 1. Does that change my results?

Yes. Social Security treats people born on January 1 as if they were born the year before. The calculator does this for you, so a January 1, 1960 birth date uses the 1959 rules and gives an FRA of 66 years and 10 months.

What does the green Best Lifetime Value tag mean?

It marks the claiming age that pays the most total dollars by the lifespan you entered. It is not advice. If you live longer or shorter than you guessed, a different age would win. Change the lifespan and watch the tag move.

Why did my best claiming age change when I moved the lifespan slider?

Lifetime totals depend on how many checks you collect. A short lifespan favors claiming at 62 because you get paid for more years. A long lifespan favors waiting to 70 because the bigger check has time to catch up and pass the smaller one.

Do the lifetime totals take out taxes or Medicare premiums?

No. All amounts are before taxes and before Medicare Part B premiums. Your real deposit can be lower. Medicare premiums are usually taken straight out of your monthly check starting at 65.

Does the calculator count money I could earn by investing early checks?

No. It simply adds up the checks. There is no interest rate or discount rate. If you would invest your early payments, claiming at 62 could look better than the plain totals here suggest.

How do I find my benefit amount at Full Retirement Age?

Create or sign in to a my Social Security account at ssa.gov. Your statement lists an estimated monthly amount at each age. Use the number shown for your Full Retirement Age. If you skip this box, the calculator uses $1,800.

Can I test a claiming age with months, like 63 and 4 months?

Yes. The Explore a Claiming Age slider moves one month at a time from 62 to 70. Your monthly benefit, lifetime total, and the step-by-step math all update as you drag it.

Why can't I choose an age older than 70?

Delayed retirement credits stop at age 70. Waiting past 70 does not raise your monthly check, so the calculator caps the slider there. Claiming later than 70 only means you miss payments.

What does nominal future dollars mean when COLA is turned on?

It means the totals are the actual dollar amounts you would receive in future years, with yearly raises added. Those future dollars buy less than today's dollars. With COLA off, every number stays in today's dollars.

Does turning on COLA change my break-even age?

Yes, a little. Raises are a percent, so the bigger check gains more dollars each year. That usually pulls the break-even age slightly earlier, which makes waiting look a bit better.

Is the spousal top-up included in the table and lifetime totals?

No. The table, charts, and lifetime totals show your own benefit only. The spousal top-up appears in its own box under the claiming age slider so you can see what would be added each month.

Why is my spousal top-up showing $0?

Because your own benefit is already equal to or larger than half of your spouse's FRA amount. Social Security pays the higher of the two, not both. A top-up only appears when half your spouse's FRA benefit is more than your own.

Does this calculator handle survivor or widow benefits?

No. It covers retirement benefits on your own record plus a spousal top-up. Survivor rules are different, can start as early as 60, and can be up to 100% of what your late spouse received. Check ssa.gov for those.

What if I keep working after I claim?

The calculator does not apply the earnings test. If you claim before FRA and earn over the yearly limit, Social Security holds back part of your check. You get that money back through higher payments once you reach FRA.

Why are my percentages different from the 70% and 124% I read about?

Those figures apply to an FRA of 67. If your FRA is 66, claiming at 62 pays 75% and waiting to 70 pays 132%. The gap between your FRA and the age you pick sets the percent, so it changes with your birth year.

What happens if I set my lifespan lower than my claiming age?

The lifetime total shows $0 because you would collect no payments. Set your expected lifespan above the ages you want to compare so the totals and break-even points make sense.

Are my answers saved or sent anywhere?

No. Everything runs inside your browser. Nothing is stored or shared. Click Print Summary to save your results as a PDF or paper copy before you close the page.

Is this the same as the official Social Security estimate?

No. This is a planning estimate built on the amount you type in. Your real benefit depends on your full earnings record, future law changes, and yearly COLA. Always confirm the final numbers at ssa.gov.

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