Your payment is based on your highest 35 years of earnings

Social Security adds up your wages from your 35 highest-earning years, adjusts them for inflation, and divides by 420 months. That average becomes your Primary Insurance Amount — the base number used to calculate your monthly check. If you worked fewer than 35 years, Social Security counts the missing years as zero, which lowers your average. If you worked more than 35 years, only your highest 35 count.

The Social Security Administration (SSA) pulls your earnings history from the W-2 forms and self-employment tax returns you filed during your working life. You can see your own record by creating an account at ssa.gov and viewing your earnings statement. If you spot an error — a missing year, a wage recorded under the wrong name, or an amount that does not match your tax return — you can request a correction, but you must do so within three years, three months, and 15 days of the year the wage was earned.

Key Takeaways

  • Social Security uses your 35 highest-earning years to calculate your base payment, so years with no earnings or very low earnings pull your average down.
  • Your actual monthly check depends on the age you start collecting: waiting until 70 gives you roughly 24% more per month than starting at 62.
  • You can view your complete earnings record on ssa.gov and correct errors if you find them within the three-year window.
  • If you were married, divorced, or widowed, you may be may have access to to a payment based on your spouse's record even if you did not work long enough to may have access to on your own.

How your age when you start affects your payment

The amount you receive each month is not fixed — it changes based on when you claim. If you were born in 1943 or later, your full retirement age (the age at which you receive your full calculated amount) is between 66 and 67, depending on your birth year. Claiming before that age reduces your payment permanently. Claiming after that age increases it.

The reduction for early claiming is roughly 6.7% per year before your full retirement age, down to a minimum at age 62. The increase for delayed claiming is roughly 8% per year after your full retirement age, up to a maximum at age 70. For example, if your calculated amount at full retirement age is $2,000 per month, claiming at 62 might give you around $1,530 per month for life, while waiting until 70 might give you around $2,480 per month for life. These are estimates; your actual figures depend on your specific earnings record and birth date.

Earnings records with gaps or low years

If you took time out of the workforce — to raise children, care for a family member, attend school, or recover from illness — those years count as zero in your 35-year calculation. A single zero year can reduce your average by roughly 2.9%. If you have multiple gaps, the effect compounds. This is why people who worked part-time, took unpaid leave, or had years of unemployment often see lower payments than they expected.

You cannot go back and change past earnings, but you can understand how gaps affected your number. Your earnings statement on ssa.gov shows which years counted toward your calculation and which were excluded. If you are still working, future earnings may replace one of your lowest years, which would raise your payment — but only if you earn more in that year than the lowest year currently in your 35-year window.

How spousal and survivor benefits are calculated

If you were married for at least 10 years and are now divorced, you may receive a payment based on your ex-spouse's earnings record without affecting their benefit or their current spouse's benefit. This payment is up to 50% of what your ex-spouse receives at their full retirement age. You must be at least 62 and your ex must be at least 62 (or deceased) for you to claim on their record.

If you are a widow or widower, you may receive up to 100% of what your deceased spouse was receiving (or would have received). If you are caring for a child under 16, you can claim at any age. If you are claiming on your own record and your spouse's record, Social Security calculates both amounts and pays you the higher one, plus a portion of the difference — a rule called the Government Pension Offset may reduce this if you receive a government pension from work where you did not pay Social Security taxes.

What happens if you continue working after you claim

If you claim Social Security before your full retirement age and continue working, Social Security reduces your payment by $1 for every $2 you earn above an annual limit. In the year you reach full retirement age, the reduction is $1 for every $3 earned, but only for earnings before the month you reach full retirement age. Once you reach full retirement age, you can earn any amount with no reduction to your benefit.

This is a temporary reduction, not a permanent one. When you reach full retirement age, Social Security recalculates your benefit to account for the months you did not receive a full payment, which usually results in a higher monthly amount going forward. The goal is to may support that people who claim early and work do not receive the full benefit of both a paycheck and a Social Security check at the same time.

Taxes on your Social Security income

Depending on your total income, you may owe federal income tax on part of your Social Security benefit. If your combined income (adjusted gross income plus non-taxable interest plus half your Social Security benefit) exceeds $25,000 as a single filer or $32,000 as a married couple filing jointly, up to 50% of your benefit may be taxable. If your combined income exceeds $34,000 (single) or $44,000 (married), up to 85% may be taxable.

Some states also tax Social Security benefits, while others do not. You can request that Social Security withhold federal income tax from your monthly payment to avoid a large tax bill at the end of the year. Form W-4V, available on the SSA website, lets you choose how much to withhold.

Cost-of-living adjustments and your payment over time

Each year, Social Security increases payments by a percentage called the Cost-of-Living Adjustment, or COLA. This adjustment is based on inflation as measured by the Consumer Price Index and is announced in October for the following year. In years with no inflation or deflation, there is no COLA increase. The COLA applies to everyone receiving benefits, regardless of age or when they claimed.

Your payment also changes if you continue to work after claiming. If you earn more in a new year than in one of your 35 highest-earning years, Social Security recalculates your benefit to include the new higher year and drop the lowest year. This recalculation happens automatically each year and usually results in a small increase to your monthly payment.

Frequently Asked Questions

Can I see my Social Security calculation before I claim?

Yes. Create an account at ssa.gov and view your earnings statement, which shows your 35 highest-earning years and an estimate of your payment at different claiming ages. The estimate assumes you stop working; if you plan to work longer, your actual payment may be higher.

What if I worked in another country?

Social Security counts only earnings from U.S. employment. If you worked abroad and paid into that country's system, you may be may have access to to a benefit there, and some countries have agreements with the United States to combine work records. Contact the SSA or the foreign country's social security office for details.

Does my payment change if I get married or divorced after I claim?

Your own Social Security payment does not change based on marital status. However, you may become may have access to to a spousal or survivor benefit if you marry someone receiving Social Security, or you may lose access to a spousal benefit if you divorce. Report any change in marital status to Social Security.

Why is my payment less than I expected based on my earnings?

Common reasons include years with no earnings or very low earnings in your 35-year window, a gap in your work history, or claiming before your full retirement age. Review your earnings statement on ssa.gov to see which years counted and which did not.

If I delay claiming, do I get a lump sum for the months I waited?

No. You receive a higher monthly payment for the rest of your life, but you do not receive back pay for the months you did not claim. The trade-off is between a smaller check now or a larger check later.