FICA is a federal payroll tax that funds Social Security and Medicare

FICA stands for the Federal Insurance Contributions Act. It is a tax your employer withholds from your paycheck every pay period. The money goes to two programs: Social Security (which pays retirement, disability, and survivor benefits) and Medicare (which pays for health coverage for people 65 and older, and some younger people with disabilities).

You will see FICA listed on your pay stub in two separate line items: Social Security tax and Medicare tax. Both are withheld automatically — you do not choose whether to pay them. Your employer also pays an equal amount on your behalf, though that portion does not show on your pay stub.

FICA is different from federal income tax withholding. Income tax goes to the U.S. Treasury and funds general government operations. FICA is a dedicated payroll tax that only funds Social Security and Medicare. Both come out of your check, but they are separate systems with separate rates.

Key Takeaways

  • FICA has two parts: Social Security tax (6.2% of your wages) and Medicare tax (1.45% of your wages), both withheld from your paycheck.
  • Your employer pays an equal FICA amount on your behalf, but only your portion appears on your pay stub.
  • FICA is mandatory for almost all workers and is separate from federal income tax withholding.
  • The money you pay into FICA now funds current Social Security and Medicare beneficiaries, not a personal account in your name.
  • Self-employed people pay both the employee and employer portions of FICA, totaling 15.3% of their net earnings.

How much FICA comes out of your paycheck

Social Security tax is 6.2% of your gross wages, up to a wage cap that changes each year. In 2024, the cap is $168,600, meaning once you earn that much in a calendar year, Social Security tax stops being withheld from your remaining paychecks. Medicare tax is 1.45% of your gross wages with no cap — it continues no matter how much you earn.

If you earn $50,000 a year on a salary, your FICA withholding would be roughly $3,825 per year: $3,100 for Social Security and $725 for Medicare. On a biweekly paycheck of about $1,923, you would see approximately $119 withheld for Social Security and $28 for Medicare.

There is also an Additional Medicare Tax of 0.9% that applies if your wages exceed $200,000 (single filers) or $250,000 (married filing jointly). This extra tax is withheld only on earnings above those thresholds and is separate from the standard 1.45% Medicare tax.

Why FICA is withheld from every paycheck

FICA withholding is required by federal law for nearly all workers. Your employer is legally obligated to deduct it and send it to the Internal Revenue Service (IRS) on your behalf. There are very few exceptions — some religious groups, certain government employees hired before specific dates, and some nonresident aliens may be exempt, but most people have no choice.

The money withheld does not go into a personal account with your name on it. Instead, it funds the Social Security and Medicare programs as they operate today. When you retire, your Social Security benefit will be funded by FICA taxes that current workers are paying. This is called a pay-as-you-go system.

Because FICA funds these programs, the amount you pay in over your working years affects how much you can receive later. The Social Security Administration tracks your earnings record and uses it to calculate your retirement benefit when you turn 62 or later.

The difference between FICA and income tax withholding

Your pay stub usually shows three separate deductions: federal income tax, Social Security tax, and Medicare tax. Federal income tax withholding is based on the W-4 form you fill out when you start a job — you can claim allowances or request extra withholding to adjust how much comes out. FICA withholding is fixed and does not change based on your W-4.

Federal income tax goes to the general Treasury and funds all federal government operations. FICA goes only to Social Security and Medicare. If you owe taxes at the end of the year, it is usually because your federal income tax withholding was too low — FICA does not affect that calculation.

Some states and cities also withhold state or local income tax, which appears as separate line items. These are different from both federal income tax and FICA.

What happens if you are self-employed

If you work for yourself, you pay FICA as self-employment tax instead of having an employer withhold it. You pay both the employee portion (6.2% for Social Security, 1.45% for Medicare) and the employer portion (another 6.2% and 1.45%), for a total of 15.3% of your net earnings.

Self-employed people calculate self-employment tax on Schedule SE of their tax return and pay it when they file their annual taxes. You can deduct half of your self-employment tax as a business expense on your tax return, which reduces your taxable income slightly.

If you have both W-2 income (from an employer) and self-employment income, you pay FICA on both. However, the Social Security portion has an annual wage cap, so if your W-2 wages already hit the cap, you would not pay Social Security tax on your self-employment income that year.

How to read FICA on your pay stub

Look for line items labeled "Social Security Tax," "OASDI" (Old-Age, Survivors, and Disability Insurance — another name for Social Security), "Medicare Tax," or simply "FICA." Some pay stubs break these out separately; others combine them. The amount should be roughly 7.65% of your gross pay (6.2% + 1.45%), unless you have already hit the Social Security wage cap for the year.

If you see a year-to-date (YTD) column on your pay stub, check it to see how much FICA you have paid so far in the calendar year. Once your Social Security YTD reaches the wage cap for that year, the Social Security tax line should show zero for the rest of the year, though Medicare tax will continue.

If the FICA amount looks wrong — for example, if it is much higher or lower than expected — contact your employer's payroll department. Errors in FICA withholding can affect your Social Security record and your taxes.

FICA and your Social Security record

Every dollar you pay in FICA Social Security tax is recorded by the Social Security Administration under your Social Security number. The agency uses your earnings history to calculate your retirement benefit, disability benefit, or survivor benefit if you become may be able to access.

You can view your earnings record and estimated benefits by creating an account on ssa.gov and accessing your Social Security Statement. The statement shows how much you have paid into Social Security over your lifetime and estimates what your monthly benefit might be at different ages.

If you notice errors in your earnings record — for example, if wages are missing or attributed to the wrong year — you can contact Social Security to correct them. It is worth checking your record every few years to catch mistakes early.

Frequently Asked Questions

Can I stop paying FICA or reduce the amount withheld?

No. FICA withholding is mandatory for almost all workers and is not adjustable like federal income tax. You cannot claim exemptions or request lower withholding on your W-4. The only way to reduce FICA is to earn less income, which is not practical for most people.

What if my employer did not withhold FICA from my paycheck?

Contact your employer's payroll department immediately. Employers are required by law to withhold FICA. If it was not withheld, you may still owe it, and your Social Security record may be incomplete. Your employer should correct the error and withhold the missing amount from future paychecks or pay it directly to the IRS.

Do I get FICA back when I file my taxes?

No. FICA is not refundable. You pay it every year, and it does not come back to you as a refund. However, you may receive a tax refund if your federal income tax withholding was too high — that is separate from FICA.

Why does FICA have a wage cap for Social Security but not Medicare?

Congress set the Social Security wage cap to limit how much high earners pay into the system. The cap is adjusted each year based on wage growth. Medicare has no cap, so all income is subject to the 1.45% Medicare tax, plus the Additional Medicare Tax for high earners. This structure reflects different policy decisions about how to fund each program.

If I work part-time at two jobs, do I pay FICA twice?

Yes. Each employer withholds FICA based on the wages they pay you. If your combined earnings exceed the Social Security wage cap, you may overpay Social Security tax. You can claim a credit for the overpayment when you file your tax return, and the IRS will refund the excess.