FICA is the payroll tax that funds Social Security and Medicare

FICA stands for the Federal Insurance Contributions Act. It is a payroll tax taken from your wages each pay period. The money funds two federal programs: Social Security (which pays retirement, disability, and survivor benefits) and Medicare (which pays for hospital insurance and medical coverage for people 65 and older, and some younger people with disabilities).

FICA appears as a line item on your pay stub. Your employer withholds it from your paycheck and sends it to the U.S. Treasury. If you are self-employed, you pay both the employee and employer portions yourself, called self-employment tax.

The amount withheld depends on your wages and filing status, not on whether you think you will use these programs later. FICA is mandatory for nearly all workers in the United States.

Key Takeaways

  • FICA has two parts: Social Security tax (6.2% of wages) and Medicare tax (1.45% of wages), with your employer matching each amount.
  • Your employer withholds FICA from your paycheck and sends it directly to the U.S. Treasury; you do not send it yourself.
  • The Social Security portion only applies to wages up to an annual cap, which changes each year; Medicare tax has no cap.
  • Self-employed people pay both the employee and employer share of FICA, totaling 15.3% for Social Security and Medicare combined.
  • FICA withholding is separate from federal income tax withholding and appears as its own line on your pay stub.

How much FICA comes out of your paycheck

FICA has two components. Social Security tax is 6.2% of your gross wages. Medicare tax is 1.45% of your gross wages. Your employer matches both amounts, so the total FICA cost is 15.3% of your wages — but you only see half of that deducted from your paycheck.

For example, if you earn $1,000 in a pay period, your FICA withholding is $62 for Social Security and $14.50 for Medicare, totaling $76.50. Your employer also pays $76.50 on your behalf, but that does not appear on your pay stub as a deduction.

There is an annual cap on Social Security tax. In 2024, you pay Social Security tax only on wages up to $168,600. Once you reach that amount in a calendar year, no more Social Security tax is withheld from your remaining paychecks that year. Medicare tax has no cap — it applies to all your wages, no matter how much you earn.

The difference between FICA and federal income tax

FICA and federal income tax are two separate withholdings. Many people confuse them because both appear on the same pay stub.

Federal income tax is withheld based on the W-4 form you fill out when you start a job. The amount depends on your filing status, number of dependents, and other income. The money goes to the Internal Revenue Service and funds general government operations.

FICA is a fixed percentage of your wages with no choices about how much is withheld. It goes to Social Security and Medicare specifically. You cannot reduce or skip FICA withholding the way you can adjust federal income tax withholding on your W-4.

What happens to FICA money after it is withheld

Your employer sends FICA withholdings to the U.S. Treasury, which deposits the money into two trust funds: the Social Security Trust Fund and the Medicare Trust Fund. These funds pay current benefits to people who are retired, disabled, or may be able to access for Medicare.

FICA is not a savings account in your name. You do not build up a personal balance that you withdraw later. Instead, current workers' FICA payments fund current beneficiaries. When you become may be able to access for Social Security or Medicare, future workers' FICA payments will help fund your benefits.

The Social Security Administration and the Centers for Medicare and Medicaid Services track your FICA contributions through your Social Security number. This record determines how much Social Security retirement benefit you can receive and whether you are covered by Medicare at 65.

FICA for self-employed workers

If you are self-employed, you pay both the employee and employer portions of FICA yourself. This is called self-employment tax. The rate is 15.3% total: 12.4% for Social Security and 2.9% for Medicare.

You calculate self-employment tax on your net earnings from self-employment (your business income minus business expenses). You pay it when you file your annual tax return using Schedule SE. The Social Security wage cap still applies — you pay the 12.4% Social Security portion only on net earnings up to the annual limit.

Self-employed people can deduct half of their self-employment tax as a business expense on their tax return, which slightly reduces their overall tax burden. However, the full amount still counts toward your Social Security and Medicare record.

How FICA contributions affect your Social Security benefit

Your Social Security retirement benefit is based on your highest 35 years of earnings. The Social Security Administration uses your FICA contribution record to calculate this amount. More years of contributions and higher wages generally result in a higher benefit.

You must have at least 40 credits of FICA contributions to be may be able to access for Social Security retirement benefits. In 2024, you earn one credit for each $1,705 in wages subject to Social Security tax, up to four credits per year. This means you typically need about 10 years of work history to may have access to.

If you have fewer than 35 years of contributions, the Social Security Administration counts zero-earning years in your calculation, which lowers your average. Working longer can replace those zero years and increase your benefit amount.

How FICA contributions affect your Medicare coverage

You become covered by Medicare at age 65 if you have at least 40 FICA credits. This is the same threshold as Social Security retirement benefits. Most people meet this requirement through their work history.

If you do not have 40 credits by age 65, you can still enroll in Medicare Part B (medical insurance) and Part D (prescription drug coverage), but you will pay higher premiums. Part A (hospital insurance) may not be available to you without the required credits.

Your FICA contributions do not determine how much Medicare costs you. Medicare premiums are based on your income, not on how much you paid into the system. However, your contribution record determines whether you are covered at all.

Frequently Asked Questions

Can I opt out of paying FICA?

No. FICA is mandatory for nearly all U.S. workers. The only exceptions are certain religious groups that have received a formal exemption from the IRS, some federal employees hired before 1984, and a few other narrow categories. Most people cannot opt out.

What if I work for multiple employers in the same year?

Each employer withholds Social Security tax separately. If your combined wages exceed the annual cap, you may overpay Social Security tax. You can claim a refund of the overpayment when you file your tax return. Medicare tax has no cap, so no refund applies to that portion.

Do immigrants and visa holders pay FICA?

Most visa holders and immigrants with work authorization pay FICA just like U.S. citizens. Undocumented workers who use an Individual Taxpayer Identification Number (ITIN) may pay FICA, but they cannot claim Social Security or Medicare benefits based on those contributions.

Does FICA withholding count toward my federal income tax?

No. FICA and federal income tax are separate. FICA does not reduce the federal income tax you owe. However, if you overpay federal income tax during the year, you can claim a refund when you file your return.

What is the Additional Medicare Tax?

If you earn more than $200,000 as a single filer (or $250,000 if married filing jointly), you pay an additional 0.9% Medicare tax on wages above that threshold. Your employer withholds this automatically. It has no annual cap and goes to the Medicare Trust Fund.