Social Security 101: What It Is and How Your Check Is Figured

The story: Ruth checks the record

Ruth looks at a Social Security earnings record on a laptop and spots a year that shows zero earnings.

1. Narrator: Ruth signs in at SSA.gov to look at the earnings record, year by year.
2. Ruth: Every paycheck had Social Security tax taken out. So I paid for this, didn’t I?
3. Narrator: Yes. Payroll taxes fund checks for retirees, survivors and people with disabilities. Working earns credits that make you eligible.
4. Narrator: The check is figured from your highest-earning years, adjusted for wage growth. Years with zero earnings can pull the average down.
5. Ruth: Wait. This year shows zero, but I worked at the clinic that whole year!
6. Narrator: Ruth finds the old W-2 and asks SSA to fix the record. Mistakes are easier to fix while old papers can still be found.
7. Narrator: Your check comes from your top years, so make sure every year is on your record.

What you’ll learn

1. Insurance you paid for

   Social Security tax comes out of every paycheck as part of FICA, and employers pay a matching share. It funds monthly checks for retirees, for families of workers who die, and for people who can’t work because of a disability. Today’s workers’ taxes pay most of today’s checks.

2. Credits make you eligible

   You earn work credits in each year you work and pay Social Security tax, up to a yearly maximum. You need a set number of credits to qualify for retirement checks; most people with a long work history have enough. Your account at SSA.gov shows yours.

3. Your top years set the check

   SSA adjusts your past earnings for wage growth, then averages your highest-earning years. A formula turns that average into your full-retirement-age check. The formula replaces a bigger share of income for lower earners than for higher earners.

4. Zero years and your record

   If you worked fewer years than SSA counts, zeros fill the gaps and pull the average down. Check every year of your earnings record and fix mistakes while records are easy to find. Worked abroad, or in a job without Social Security tax? Those years may be missing, and that can be normal. Lessons on both are coming.

Key words

work credits

units you earn by working

Also called: quarters of coverage

earnings record

your lifetime earnings on file with SSA

full-retirement-age benefit

your base check

Also called: Primary Insurance Amount (PIA)

Common questions

Will Social Security be there for me?

Today’s workers keep paying in, so checks keep going. Headlines about a fund “running out” mean the reserve, not the whole program. If Congress made no changes, checks could be trimmed, not stopped. A lesson on the trust fund is coming.

I worked for a government that didn’t take Social Security tax. Does this apply?

Those years may be missing from your record, which is expected. A 2025 law ended the rules that cut Social Security checks for people with a pension from that kind of job. A lesson on government and teacher retirement is coming.

I’m already collecting. Does checking my record still matter?

Yes. If a year is missing or wrong, SSA can correct it and may raise your check. Your account at SSA.gov shows every year.

Remember this

Your check comes from your top years. Make sure every year is on your record.

Try it: Check every year of your record

1. Create or sign in to your my Social Security account at SSA.gov.
2. Look at every year of your earnings record.
3. If a year looks wrong, find that year’s W-2 or tax return and contact SSA.

Create or sign in to your my Social Security account at SSA.gov and check every year of earnings.

Live facts

Numbers that change over time, with when they were last checked and where they come from.

• Social Security tax rate (employee)

  6.2%

  Taken from each paycheck up to the wage base; employers pay the same again

  As of 2026

  Source: IRS.gov(opens in a new tab)

• Social Security wage base

  $184,500

  Pay above this in a year owes no Social Security tax

  As of 2026

  Source: SSA.gov(opens in a new tab)

• How you earn credits, and how many you need

  Source: SSA.gov(opens in a new tab)

• How your benefit is figured

  Source: SSA.gov(opens in a new tab)