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

FICA stands for the Federal Insurance Contributions Act. It is a payroll tax that the federal government uses to fund two programs: Social Security (retirement, disability, and survivor benefits) and Medicare (health insurance for people 65 and older, and some younger people with disabilities). When you work, FICA taxes are automatically withheld from your paycheck.

FICA has two parts. The Social Security portion is 6.2% of your wages, and the Medicare portion is 1.45% of your wages. If you are self-employed, you pay both the employee and employer share, which totals 15.3% for Social Security and 2.9% for Medicare. Your employer pays the other half if you work for someone else.

These taxes are separate from federal income tax withholding. Even if you owe no federal income tax at the end of the year, FICA taxes still come out of every paycheck. The money goes into trust funds managed by the Social Security Administration and the Centers for Medicare & Medicaid Services, not into a general government account.

Key Takeaways

  • FICA taxes fund Social Security retirement benefits and Medicare health insurance, and they are withheld from every paycheck.
  • The Social Security portion is 6.2% of your wages and the Medicare portion is 1.45%, totaling 7.65% for employees.
  • Your employer pays an equal amount (another 7.65%) on your behalf, though you do not see this on your paycheck.
  • Self-employed workers pay both the employee and employer share, which is why their FICA rate is roughly double.
  • FICA taxes are mandatory and separate from federal income tax, even if you have no federal income tax liability.

How much FICA tax comes out of your paycheck

The amount depends on your gross wages and whether you are an employee or self-employed. For employees, 7.65% of your gross pay goes to FICA: 6.2% for Social Security and 1.45% for Medicare. This is the same rate for everyone, regardless of income level, except for the additional Medicare tax.

If you earn over a certain threshold, you pay an additional 0.9% Medicare tax on wages above that amount. The threshold is $200,000 for single filers, $250,000 for married couples filing jointly, and $125,000 for married couples filing separately. This additional tax is withheld from your paycheck and goes to Medicare.

Your employer also pays FICA taxes on your behalf at the same rate (7.65%), but this amount does not appear on your paycheck. It is a cost to your employer. Self-employed people must pay both shares themselves, which is why they pay 15.3% for Social Security and 2.9% for Medicare on their net self-employment income.

Why Social Security has a wage cap but Medicare does not

Social Security taxes only apply to the first $168,600 of your annual wages (this amount changes each year based on wage growth). Once you earn above that threshold in a calendar year, no more Social Security tax is withheld from your paycheck. Medicare taxes, however, have no wage cap — you pay 1.45% on all your wages, no matter how much you earn, plus the additional 0.9% if you cross the income threshold.

The wage cap exists because Social Security benefits are calculated based on your lifetime earnings up to that cap. The program is designed as insurance tied to your work history, not as a tax on all income. Medicare, by contrast, is structured more like a health insurance premium that applies to all wages.

This difference means high earners pay a smaller percentage of their total income to Social Security but continue paying Medicare tax on every dollar. A person earning $500,000 per year pays Social Security tax on only the first $168,600 of that income, but pays Medicare tax on all $500,000.

FICA taxes and self-employment income

If you are self-employed, you pay FICA taxes through the self-employment tax on your Schedule SE (IRS Form 1040). Self-employment tax is roughly 15.3% of your net self-employment income: 12.4% for Social Security and 2.9% for Medicare. You calculate this on your tax return, not through paycheck withholding.

Self-employed workers can deduct half of their self-employment tax as an adjustment to income on their tax return. This deduction recognizes that the self-employed person is paying both the employee and employer share. You still owe the full amount, but the deduction reduces your taxable income.

If you have both W-2 wages and self-employment income, Social Security tax applies to the combined total up to the annual wage cap. This means if you already paid Social Security tax on $168,600 in W-2 wages, you do not pay it again on self-employment income. However, Medicare tax applies to all income with no cap.

How FICA taxes fund Social Security and Medicare

FICA taxes are not held in an individual account with your name on it. Instead, the money goes into two trust funds: the Social Security Trust Fund and the Medicare Trust Fund. Current workers' taxes pay for current retirees' and beneficiaries' benefits. This is called a pay-as-you-go system.

When you reach retirement age, your Social Security benefit is based on your lifetime earnings record and the age at which you claim. The amount you paid in FICA taxes over your working years determines your benefit, but you do not get back exactly what you paid in. Some people receive more than they paid, and others receive less, depending on how long they live and other factors.

Medicare works similarly. Your Medicare taxes fund the hospital insurance (Part A) and supplemental medical insurance (Part B) programs. When you turn 65, you become may be able to access for Medicare, and your taxes help pay for your coverage and for other beneficiaries.

What happens if you overpay FICA taxes

If you work for multiple employers in the same year, you might overpay Social Security tax. This can happen because each employer withholds 6.2% up to the wage cap independently — they do not know what you earned at your other jobs. If your combined wages exceed the annual cap, you will have paid more Social Security tax than required.

When you file your tax return, you can claim a credit for the overpayment. The IRS will either refund the excess or apply it to other taxes you owe. You cannot claim a credit for overpaid Medicare tax, since there is no wage cap for Medicare.

To avoid confusion, keep track of your W-2 forms from all employers and check that the Social Security wages reported add up correctly. If you notice an error, contact your employer's payroll department to request a corrected W-2.

FICA taxes and non-citizens or visa holders

Most people working in the United States pay FICA taxes, regardless of citizenship status. If you have a valid work visa or authorization, your employer will withhold FICA taxes from your paycheck just as they do for citizens. Some visa categories, such as certain student visas or exchange visitor visas, may have exemptions, but these are rare and require specific documentation.

Undocumented workers who are paid on the books (through an employer who reports wages) also have FICA taxes withheld. These taxes go into the Social Security and Medicare trust funds. However, undocumented workers generally cannot claim Social Security benefits based on those contributions.

If you are unsure whether you should be paying FICA taxes based on your visa status, contact your employer's human resources department or consult the IRS website for your specific visa category.

Frequently Asked Questions

Can I opt out of paying FICA taxes?

No. FICA taxes are mandatory for all employees and self-employed people. The only exceptions are certain religious groups that have received an IRS exemption and some government employees hired before specific dates. If you are a regular employee or self-employed, you cannot opt out.

Do I get back what I paid in FICA taxes?

Not necessarily. Social Security and Medicare are insurance programs, not savings accounts. Your benefit depends on your age when you claim, how long you live, and your lifetime earnings record. Some people receive more than they paid in; others receive less. The system is designed to provide a baseline level of income and health coverage in retirement, not to return your exact contributions.

What if I never worked and paid FICA taxes?

You would not be may be able to access for Social Security retirement benefits based on your own work record. However, you might be may be able to access for spousal or survivor benefits if you are married to someone who worked and paid FICA taxes, or if you are a widow or widower. Contact the Social Security Administration to learn about your options.

Does FICA tax apply to tips?

Yes. Tips are considered wages and are subject to FICA taxes. Your employer should withhold FICA taxes on tips you report to them. If you receive cash tips that you do not report, you are still legally required to pay FICA taxes on them when you file your tax return, though many people do not.

Why do I pay FICA taxes if I am already paying federal income tax?

FICA and federal income tax are two separate taxes that fund different programs. Federal income tax goes to the general Treasury and funds many government operations. FICA taxes are dedicated to Social Security and Medicare. Both are withheld from your paycheck, but they serve different purposes and are calculated differently.