FICA is a federal tax that funds Social Security and Medicare

FICA stands for the Federal Insurance Contributions Act. It is a payroll tax that your employer takes directly from your paycheck. The money goes to two programs: Social Security (which pays retirement, disability, and survivor benefits) and Medicare (which pays for health coverage when you turn 65). You will see FICA listed on your paystub as two separate line items: Social Security tax and Medicare tax.

FICA is not optional. If you work as an employee, your employer is required by law to withhold it. Self-employed people pay FICA themselves, at a higher rate, when they file taxes. The amount withheld depends on how much you earn, not on your tax filing status, dependents, or deductions.

Unlike income tax withholding, which can change based on the W-4 form you fill out, FICA withholding is fixed by law. You cannot reduce it or opt out, even if you do not plan to use Social Security or Medicare later.

Key Takeaways

  • FICA has two parts: Social Security tax (6.2% of your gross pay) and Medicare tax (1.45% of your gross pay), and your employer matches both amounts.
  • FICA is withheld from every paycheck if you are an employee, and the amount is set by federal law, not by your personal choices.
  • You only pay Social Security tax on earnings up to a certain cap (which changes each year), but Medicare tax has no cap and continues on all income.
  • The money withheld goes into trust funds that pay current beneficiaries, not into a personal account with your name on it.

How much FICA comes out of your paycheck

Social Security tax is 6.2% of your gross pay (the amount before deductions). Medicare tax is 1.45% of your gross pay. Together, FICA is 7.65% of what you earn. Your employer also pays an equal amount (6.2% for Social Security and 1.45% for Medicare) on your behalf, though you do not see that on your paystub.

There is a limit on Social Security tax. In 2024, you only pay Social Security tax on the first $168,600 of income you earn in a year. Once you reach that amount, Social Security tax stops coming out of your paycheck for the rest of that year. Medicare tax, however, has no limit. You pay 1.45% on every dollar you earn, no matter how much you make. High earners also pay an additional 0.9% Medicare tax on income above a certain threshold, which your employer will withhold separately.

The income cap for Social Security changes each year. If you work for multiple employers or change jobs, you might pay Social Security tax on more than the cap in a single year. If that happens, you can claim a credit when you file your tax return to get the overpayment back.

Why FICA appears on your paystub

Your employer is required to withhold FICA and send it to the federal government. The paystub shows what was taken out so you can see where your money went. FICA withholding is separate from income tax withholding, which is why you see them listed as different line items.

The paystub also shows your employer's FICA contribution on some formats, though not all. This is money your employer pays on top of your salary. It does not come out of your paycheck, but it is part of your total compensation cost to the employer.

The difference between FICA and income tax

FICA and federal income tax are two separate withholdings. FICA is a fixed percentage set by law. Income tax withholding depends on the W-4 form you submit to your employer, which lets you claim allowances or request extra withholding. You can change your income tax withholding by submitting a new W-4, but you cannot change FICA withholding.

FICA money goes into Social Security and Medicare trust funds. Income tax money goes into the general Treasury. FICA has a wage cap for Social Security (but not Medicare), while income tax applies to all income with no cap. Both are withheld from your paycheck, but they fund different programs and work under different rules.

What happens to the FICA money you pay

FICA taxes fund two separate trust funds. The Social Security tax you pay goes into the Old-Age, Survivors, and Disability Insurance (OASDI) trust fund. The Medicare tax you pay goes into the Hospital Insurance (HI) trust fund. These are not personal savings accounts. The money is used to pay current beneficiaries — people who are already retired, disabled, or may be able to access for Medicare.

Your FICA contributions build a record of earnings. When you reach retirement age, become disabled, or die, your family may be may have access to to benefits based on how much you paid into the system and for how long. The Social Security Administration tracks your earnings record under your Social Security number. You can view your earnings record and benefit estimates by creating an account at ssa.gov.

FICA withholding for self-employed people

If you are self-employed, you pay FICA yourself as self-employment tax. The rate is 15.3% (12.4% for Social Security and 2.9% for Medicare), which is double the employee rate because you pay both the employee and employer portions. You pay self-employment tax when you file your annual tax return, not on each paycheck.

Self-employed people can deduct half of their self-employment tax when calculating their adjusted gross income, which reduces their taxable income slightly. You still pay the full amount, but the deduction provides some offset. The Social Security wage cap still applies — you only pay the 12.4% Social Security portion on the first $168,600 of net self-employment income in 2024.

Reading FICA on your paystub

On your paystub, look for line items labeled "Social Security" or "FICA-SS" and "Medicare" or "FICA-Med." These show the amount withheld from that paycheck. Multiply your gross pay by 6.2% and 1.45% to verify the amounts are correct. If you have earned more than the Social Security wage cap earlier in the year, Social Security tax should stop appearing on later paychecks.

Some paystubs also show year-to-date totals for FICA withholding. This helps you track whether you have hit the Social Security cap. If you work for multiple employers, keep track of your total Social Security withholding across all jobs to make sure you do not overpay.

Frequently Asked Questions

Can I get FICA taxes back on my tax return?

You cannot get FICA back unless you overpaid Social Security tax by working for multiple employers or changing jobs. If your combined Social Security withholding from all employers exceeds the annual cap, you can claim the overpayment as a credit on your tax return. Medicare tax and self-employment tax cannot be refunded.

Why do I pay FICA if I do not plan to use Social Security?

FICA is mandatory for all employees. You cannot opt out based on your personal plans. However, Social Security benefits are not just for retirement — they also cover disability and survivor benefits for your family. Even if you do not claim retirement benefits, your dependents may be may have access to to benefits if you become disabled or die.

What if my employer did not withhold FICA?

Contact your employer immediately. They are required by law to withhold FICA and remit it to the government. If they did not, you may still owe the tax when you file your return. Report the issue to the IRS if your employer refuses to withhold or if you suspect fraud.

Does FICA withholding count toward my income tax?

No. FICA and income tax are separate. FICA withholding does not reduce the amount of income tax you owe. Both are taken from your paycheck, but they fund different programs and are calculated independently.

Why is there a wage cap for Social Security but not Medicare?

Congress set the Social Security wage cap to limit how much high earners contribute to the system. Medicare has no cap because it is designed to cover all workers equally in retirement. The cap amount changes each year based on average wage growth.