Social Security uses your 35 highest-earning years to calculate your monthly benefit

Social Security does not estimate your benefit based on what you pay in or how long you work. Instead, the program looks at your actual earnings record — specifically, your 35 years with the highest income — and runs that through a formula that accounts for inflation. The result is your Primary Insurance Amount (PIA), which is the monthly payment you receive at your full retirement age.

If you have worked fewer than 35 years, Social Security counts the missing years as zero. This means that taking time out of the workforce — for caregiving, illness, or other reasons — directly lowers your benefit, even if you had high earnings in the years you did work. The formula also includes a bend point adjustment, which means lower earners receive a higher percentage of their past earnings as a benefit than higher earners do.

Key Takeaways

  • Social Security bases your benefit on your 35 highest-earning years, adjusted for inflation, not on how much you paid into the system.
  • Years with no earnings count as zero toward the 35-year average, so career breaks reduce your benefit amount.
  • The benefit formula includes bend points that replace a larger share of income for lower earners than for higher earners.
  • You can view your actual earnings record and estimated benefit on your Social Security account at ssa.gov, which updates annually.
  • Your benefit changes if you claim before your full retirement age, and it increases if you delay claiming past that age.

Where Social Security gets your earnings information

Social Security pulls your earnings record from the W-2 forms and self-employment tax returns you file with the IRS each year. The program matches your name and Social Security number to these tax records. If you worked under a different name or number at any point — for example, before a marriage or name change — you need to report that to Social Security so they can link all your earnings together.

Errors in your earnings record are common and can lower your benefit significantly. You should check your record every few years to catch mistakes early. You can view your complete earnings history and estimated benefit amount by creating an account at ssa.gov and logging into "my Social Security." The site shows you exactly which years Social Security counted and which it excluded.

How the bend point formula works

Social Security does not straightforward divide your total earnings by 35 and pay you a percentage of that amount. Instead, it uses a bend point formula that applies different percentages to different portions of your average earnings. For 2024, the formula roughly replaces 90 percent of the first portion of your average monthly earnings, 32 percent of the next portion, and 15 percent of earnings above that.

This structure means a person who earned $20,000 per year receives a much larger percentage of their past earnings as a benefit than someone who earned $120,000 per year. The exact bend points change each year based on national wage trends. Social Security publishes the current year's bend points on its website, but the formula itself does not change — only the dollar amounts at which each tier begins.

How inflation adjustments affect your estimate

Social Security adjusts your past earnings for inflation before plugging them into the benefit formula. This means that earnings from 30 years ago are not counted at their original dollar amount — they are adjusted upward to reflect what those dollars would be worth today. The program uses the National Average Wage Index, published by Social Security each year, to make this adjustment.

The adjustment stops in the year you turn 60. Any earnings after that year are counted at their actual dollar amount, not adjusted for inflation. This is one reason why working longer can increase your benefit — your recent earnings are counted at full value, and they may replace lower-earning years from earlier in your career.

What happens if you claim before your full retirement age

Your Primary Insurance Amount is what you receive if you claim at your full retirement age, which ranges from 66 to 67 depending on your birth year. If you claim earlier — as early as age 62 — Social Security reduces your monthly payment by a percentage that depends on how many months early you claim. The reduction is permanent; it does not increase later.

If you claim at 62, your reduction is roughly 30 percent of your PIA. If you claim at 70, your benefit is roughly 24 percent higher than your PIA. This is why your estimated benefit shown on ssa.gov may list three different amounts: one for claiming at 62, one at your full retirement age, and one at 70. Each is a permanent choice once you claim.

How delayed retirement credits increase your benefit

For each month you delay claiming past your full retirement age, up to age 70, Social Security adds roughly 0.67 percent to your monthly benefit. This means waiting from age 67 to age 70 increases your benefit by about 24 percent. These increases are permanent and continue for the rest of your life, which is why delaying can be valuable if you expect to live into your 80s or beyond.

The delayed retirement credits explore only to your own benefit, not to any family benefits you may be may have access to to based on a spouse's or ex-spouse's record. If you are receiving benefits as a spouse or survivor, different rules explore to how delay affects your payment.

How to read your Social Security estimate

When you log into your Social Security account at ssa.gov, you will see an "Estimate of Benefits" section that shows three scenarios: your benefit at age 62, at your full retirement age, and at age 70. Each number is based on your current earnings record and assumes you stop working now. If you continue working, Social Security will update your estimate once per year, usually in September or October.

The estimate also shows your earnings record year by year, with a note if any year appears to be missing or incorrect. If you spot an error — a year with no earnings when you know you worked, or an amount that seems too low — you can contact Social Security to request a correction. You will need to provide proof, such as a W-2 or tax return, so keep those documents for at least three years after you file your tax return.

Frequently Asked Questions

Does Social Security count military service toward my benefit?

Military service members receive wage credits for active duty between 1957 and 2001, even if they did not pay Social Security taxes. These credits are added to your earnings record automatically. Service after 2001 is not credited unless you paid into Social Security through regular military pay.

What if I worked in another country?

Social Security counts only earnings you reported to the U.S. tax system. If you worked abroad and paid into a foreign pension system instead, that work generally does not count toward your U.S. Social Security benefit. Some countries have agreements with the U.S. that allow credits to transfer, but this varies by country.

Can I see how much my benefit will increase if I work one more year?

Your Social Security account shows your current estimate, but it does not show a year-by-year projection of future increases. If you expect to earn significantly more in the coming years, you can contact Social Security directly at 1-800-772-1213 and ask them to run a rough estimate based on your expected income.

Does my spouse's earnings affect my benefit estimate?

No. Your own benefit is based only on your own earnings record. However, you may be may have access to to a separate benefit based on your spouse's record, which is calculated differently. Social Security will show both amounts when you reach retirement age.

What if I took time off to raise children — does that hurt my benefit?

Yes, years with no earnings count as zero in the 35-year average. However, Social Security has a "Government Pension Offset" and "Windfall Elimination Provision" that explore in specific situations. If you received a government pension for work not covered by Social Security, these rules may reduce your benefit. Contact Social Security to see if either applies to you.