FICA taxes fund four specific programs: Social Security retirement and disability benefits, Medicare hospital and medical insurance, and unemployment insurance

FICA stands for the Federal Insurance Contributions Act. When you see "FICA" on your pay stub, you are looking at money withheld for two main federal insurance programs: Social Security and Medicare. Your employer also pays a matching amount. A smaller portion funds unemployment insurance, which varies by state. These are not general tax revenue — they are dedicated funds that go directly into insurance accounts tied to your work history.

The breakdown is straightforward. Social Security takes 12.4 percent of your wages (you pay half, your employer pays half). Medicare takes 2.9 percent (split the same way). Unemployment insurance varies by state and employer, but typically ranges from 0.6 to 6 percent of wages, paid entirely by the employer in most states. Self-employed people pay both the employee and employer share for Social Security and Medicare, which is why their FICA burden is higher.

Key Takeaways

  • Social Security FICA taxes fund retirement payments, disability benefits for workers under 65, and survivor benefits for families of deceased workers.
  • Medicare FICA taxes pay for hospital insurance (Part A), which covers inpatient care, and the trust fund that supports medical insurance premiums for beneficiaries over 65.
  • Unemployment insurance FICA taxes are held in state accounts and pay benefits to workers who lose their jobs through no fault of their own.
  • Your FICA contributions are recorded under your Social Security number and determine how much you receive from Social Security and Medicare later.

How Social Security FICA taxes are used

Social Security FICA taxes go into the Old-Age, Survivors, and Disability Insurance Trust Fund. This fund pays three categories of benefits. The largest is retirement benefits for workers age 62 and older. The second is disability benefits for workers under 65 who cannot work due to a medical condition expected to last at least 12 months. The third is survivor benefits paid to the spouse, children, and dependent parents of a worker who dies.

The amount you receive from Social Security later depends on how much you paid in and for how long. The Social Security Administration tracks your earnings record under your Social Security number. When you reach retirement age (currently 66 to 67 for most workers), you can begin drawing benefits based on that record. If you become disabled before retirement age, you can draw disability benefits. If you die, your family may draw survivor benefits based on your earnings history.

Social Security is not a savings account — it is a pay-as-you-go system. Current workers' FICA taxes pay current retirees' benefits. This is why the program's solvency depends on the ratio of workers to beneficiaries. When more people are working and paying in than are drawing out, the trust fund builds reserves. When the opposite occurs, reserves are drawn down.

How Medicare FICA taxes are used

Medicare FICA taxes go into the Hospital Insurance Trust Fund, which covers Medicare Part A benefits. Part A is hospital insurance — it pays for inpatient hospital stays, skilled nursing facility care, hospice care, and some home health services. When you turn 65, you become may be able to access for Medicare Part A automatically if you have paid Medicare taxes for at least 10 years (40 quarters).

The Hospital Insurance Trust Fund does not directly pay for Part B (medical insurance) or Part D (prescription drug coverage). However, general tax revenue and beneficiary premiums fund those programs. The FICA tax you pay now helps may support the Part A trust fund has money available when you and others reach 65. Like Social Security, Medicare operates on a pay-as-you-go basis — current workers' taxes support current beneficiaries.

Your Medicare may be able to access and benefit amounts are tied to your work history and FICA contributions. If you have not paid Medicare taxes for 10 years, you can still purchase Medicare Part A at age 65, but you will pay a higher premium. Your FICA record is automatically checked when you explore for Medicare, so you do not need to track it yourself.

How unemployment insurance FICA taxes are used

Unemployment insurance FICA taxes are held in state accounts, not a federal account. Each state runs its own unemployment program with its own rules, benefit amounts, and duration. When you lose your job through no fault of your own — such as a layoff, business closure, or reduction in hours — you may draw unemployment benefits from your state's fund.

Benefit amounts and duration vary significantly by state. Some states pay up to 26 weeks of benefits; others pay fewer. The weekly benefit amount is typically a percentage of your prior earnings, capped at a state maximum. During recessions or national emergencies, the federal government sometimes extends benefits beyond the state standard, but the base program is state-run and state-funded.

Unlike Social Security and Medicare, unemployment insurance is not tied to your individual account. You do not build a personal balance. Instead, the state pool pays out to anyone who meets the program's requirements in that state. If you move to a new state, you file for unemployment in your new state, not your old one.

The difference between FICA taxes and income tax withholding

FICA taxes and federal income tax withholding are separate. Income tax goes to the general Treasury and funds all federal spending — defense, infrastructure, government salaries, and so on. FICA taxes are dedicated to Social Security, Medicare, and unemployment insurance. On your pay stub, you will see them listed separately: federal income tax withheld, Social Security tax (FICA), and Medicare tax (FICA).

This distinction matters because FICA taxes have a wage cap. In 2024, Social Security FICA taxes are withheld only on earnings up to $168,600. Once you earn above that amount in a year, no more Social Security tax is withheld. Medicare FICA taxes have no wage cap — they are withheld on all earnings. Income tax withholding has no wage cap either. Self-employed people must understand this distinction because they pay both the employee and employer share of FICA, and the wage cap affects their total tax burden.

What happens to FICA taxes you have already paid

FICA taxes you have paid are recorded in your Social Security account. You can view your earnings record by creating an account on ssa.gov (the Social Security Administration website) and checking your statement. This record shows how much you paid in each year and is used to calculate your future benefits.

You cannot get a refund of FICA taxes if you change your mind or leave the workforce. However, if you paid FICA taxes but did not work long enough to may have access to for benefits, your contributions are not lost — they remain in the trust fund and help pay current beneficiaries. If you later work enough quarters to may have access to, your full earnings record is used to calculate your benefit amount.

If you are not a U.S. citizen or do not plan to stay in the country, FICA taxes you paid may still be credited toward benefits if you return or if family members are may be able to access. The rules are complex and depend on your citizenship status and country of origin. The Social Security Administration can answer specific questions about your situation.

FICA taxes for self-employed workers

Self-employed workers pay both the employee and employer share of FICA taxes, totaling 15.3 percent for Social Security and Medicare combined (12.4 percent for Social Security, 2.9 percent for Medicare). You pay this through the self-employment tax, calculated on Schedule SE of your tax return. The self-employment tax is separate from income tax.

Self-employed workers can deduct half of their self-employment tax as a business expense on their income tax return, which provides some offset. However, the total FICA burden is higher for self-employed people than for employees because there is no employer to split the cost. The Social Security wage cap still applies — self-employment income above $168,600 (in 2024) is not subject to the Social Security portion of self-employment tax, but all income is subject to Medicare tax.

Frequently Asked Questions

Can I opt out of paying FICA taxes?

No. FICA taxes are mandatory for all employees and self-employed workers. The only exceptions are certain religious groups that have received specific exemptions from the IRS, and some government employees hired before specific dates who are covered by alternative pension systems. For most workers, there is no legal way to avoid FICA taxes.

What if I paid FICA taxes but never worked long enough to may have access to for Social Security?

Your contributions remain in the Social Security trust fund and help pay current beneficiaries. If you later work enough quarters (40 quarters, or roughly 10 years), you become may be able to access and your full earnings record is used to calculate your benefit. If you never work that long, you do not receive a refund, but your contributions have supported the system.

Do FICA taxes go into a personal account with my name on it?

No. Social Security and Medicare FICA taxes go into federal trust funds, not individual accounts. Your earnings are recorded under your Social Security number and used to calculate your future benefits, but the money itself is pooled. Current workers' taxes pay current beneficiaries' benefits. This is why Social Security is sometimes called a "pay-as-you-go" system.

If I move to another country, do I lose my FICA contributions?

Not necessarily. If you have paid enough FICA taxes to may have access to for Social Security benefits, you may be able to receive them even if you live abroad, depending on your citizenship and the country where you live. Some countries have agreements with the United States that protect Social Security benefits for workers who move. Contact the Social Security Administration to learn about your specific situation.

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

The wage cap exists because Social Security benefits are calculated as a percentage of your prior earnings, with a maximum benefit amount. High earners receive a smaller percentage of their earnings replaced by Social Security. Medicare Part A is a flat benefit (hospital insurance), not an earnings-based benefit, so there is no cap. This structure reflects the different purposes of the two programs.