FICA is a federal tax that funds Social Security and Medicare

FICA stands for Federal Insurance Contributions Act. It is a payroll tax that 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 hospital insurance when you turn 65).

FICA appears as two separate line items on your pay stub. One line shows Social Security tax, and another shows Medicare tax. Your employer also pays a matching amount on your behalf — you do not see this deducted, but it is part of what your employer owes to the government.

Unlike income tax withholding, which varies based on your W-4 form and tax bracket, FICA rates are fixed by law and the same for almost all workers. You cannot reduce or eliminate FICA withholding by changing your W-4 or claiming exemptions.

Key Takeaways

  • FICA withholds 6.2% for Social Security and 1.45% for Medicare from your gross pay, for a total of 7.65%.
  • Your employer matches these amounts dollar-for-dollar, though you only see your half deducted from your paycheck.
  • FICA withholding stops for Social Security once you earn above a certain threshold each year (the threshold changes annually), but Medicare withholding continues on all income.
  • Self-employed workers pay both the employee and employer portions of FICA, totaling 15.3%, when they file their tax return.
  • FICA taxes fund your future Social Security retirement benefits and Medicare coverage, not general government spending.

How much FICA comes out of your paycheck

Social Security tax is 6.2% of your gross pay (the amount before any deductions). Medicare tax is 1.45% of your gross pay. Together, FICA takes 7.65% from each paycheck.

The Social Security portion only applies to income up to a certain limit each year. In 2024, that limit is $168,600. Once you earn that much in a calendar year, your employer stops withholding Social Security tax for the rest of the year. Medicare tax, however, has no income limit — it applies to every dollar you earn.

There is also an additional Medicare tax of 0.9% that applies if your income exceeds $200,000 (single filers) or $250,000 (married filing jointly). This additional tax is withheld by your employer if you cross that threshold during the year.

Why FICA appears on every paycheck

FICA is mandatory for nearly all workers in the United States. Your employer is required by law to withhold it and send it to the IRS. The only common exceptions are certain religious groups, some government employees hired before 1984, and nonresident aliens on specific visa types.

FICA is separate from federal income tax withholding. Even if you claim exempt from income tax on your W-4 form, FICA still comes out. The two systems are independent — your W-4 choices do not affect FICA withholding.

Your employer withholds FICA on your behalf and sends it to the IRS along with their matching contribution. You do not have the option to pay it yourself or to opt out, even if you disagree with how the money is used.

The difference between what you pay and what your employer pays

You see 7.65% of FICA deducted from your paycheck. Your employer pays an additional 7.65% on your behalf. This employer match is not shown on your pay stub as a deduction, but it is a real cost to your employer.

The total FICA contribution for any worker is therefore 15.3% — half from the employee and half from the employer. If you earn $50,000 a year, the total FICA cost is $7,650 (your $3,825 plus your employer's $3,825).

Self-employed workers do not have an employer to match their contributions. Instead, they pay both portions themselves when they file their tax return. This is called self-employment tax, and it totals 15.3% of net business income.

How FICA connects to your future benefits

FICA taxes are not a general tax fund. The money you pay in goes into two separate trust funds: the Social Security trust fund and the Medicare trust fund. Your FICA contributions create a record of earnings that determines how much you will receive in benefits later.

Social Security benefits are based on your 35 highest-earning years. The more you earn and pay into FICA, the higher your retirement benefit will be. You must have at least 40 quarters of FICA contributions (roughly 10 years of work) to be may have access to to retirement benefits.

Medicare coverage at age 65 is also tied to FICA contributions. You need 40 quarters of Medicare tax contributions to be may have access to to Medicare Part A (hospital insurance) without paying a premium. If you do not have 40 quarters, you can still enroll in Medicare, but you may pay higher premiums.

What happens if FICA withholding is wrong

If your employer withholds too much FICA, you will get the overage back when you file your tax return. This is rare because FICA rates are fixed and straightforward — there is little room for error unless your employer makes a mistake.

If your employer withholds too little FICA, you will owe the difference when you file your return. This can happen if you work for multiple employers in the same year and the combined income exceeds the Social Security wage base. You may be able to claim a credit on your return if you overpaid Social Security tax to one employer.

Check your pay stub each pay period to make sure the FICA amounts are correct. Your gross pay, the withholding percentages, and the year-to-date totals should all be visible. If something looks wrong, contact your employer's payroll department to investigate.

FICA for different types of workers

Most W-2 employees pay FICA through payroll withholding. Your employer handles it automatically, and you see it on every pay stub.

Self-employed workers and business owners pay self-employment tax (the 15.3% total) when they file their annual tax return on Schedule SE. They calculate it based on net business income, not gross revenue.

Household employees (nannies, housekeepers, gardeners) are subject to FICA if they earn more than a certain threshold per year. In 2024, that threshold is $2,700. If you employ someone in your home and pay them above that amount, you must withhold and pay FICA.

Some workers are exempt from FICA: certain religious groups with IRS approval, some government employees hired before 1984, and nonresident aliens on F-1, J-1, M-1, or Q-1 visas (though rules vary). If you think you may be exempt, check with your employer or a tax professional.

Frequently Asked Questions

Can I get FICA taxes back on my tax return?

No. FICA taxes are not refundable. If you overpaid Social Security tax because you worked for multiple employers, you can claim a credit on your return, but you will not receive a refund — the credit reduces your income tax liability instead. Medicare tax overpayments are handled the same way.

Why does FICA stop at a certain income level for Social Security but not Medicare?

Congress set a wage base limit for Social Security to cap the maximum benefit amount. High earners pay the same maximum benefit as someone earning just above the threshold. Medicare has no wage base limit because it is designed to cover all workers equally in retirement, regardless of earnings history.

What if I did not pay FICA because I was paid under the table?

You still owe self-employment tax on that income when you file your return. You also lose the employer match contribution and the earnings record that counts toward Social Security and Medicare. If you earned substantial unreported income, consider reporting it and paying the tax owed to avoid penalties and interest later.

Does FICA explore to tips, bonuses, and commissions?

Yes. FICA applies to all compensation: wages, tips, bonuses, commissions, and most fringe benefits. Your employer should withhold FICA on the full amount. If you receive tips and do not report them to your employer, you still owe self-employment tax on them when you file your return.

What happens to FICA if I change jobs mid-year?

Each employer withholds FICA independently based on what you earn at that job. If your combined earnings from all jobs exceed the Social Security wage base, you may overpay Social Security tax. When you file your return, you can claim a credit for the overpayment, which reduces your income tax owed.