FICA is a payroll tax that funds Social Security and Medicare

FICA stands for the Federal Insurance Contributions Act. The money taken from your paycheck under this label goes to two programs: Social Security and Medicare. Your employer also pays a matching amount on your behalf — you see only your half on your pay stub.

FICA is not optional and not based on your income level or filing status. It comes out of nearly every paycheck, whether you work for a company, are self-employed, or work part-time. The only common exception is certain government employees hired before 1984 who are covered by their own pension system instead.

The amount deducted changes each year because Congress sets the tax rate, and the Social Security portion has a wage cap — a maximum amount of income subject to that tax. Medicare has no cap.

Key Takeaways

  • FICA has two parts: 6.2% for Social Security (on income up to an annual cap set by the IRS) and 1.45% for Medicare (on all income with no cap).
  • Your employer pays an equal amount on top of what you see deducted, but only your portion appears on your pay stub.
  • Self-employed people pay both the employee and employer portions, totaling 15.3%, though they can deduct half on their tax return.
  • FICA withholding is separate from federal income tax withholding and cannot be reduced by changing your W-4 form.
  • You can see your lifetime FICA contributions and estimated benefits by creating an account at ssa.gov.

How much FICA comes out of each paycheck

The Social Security portion is 6.2% of your gross pay, but only on income up to a limit. For 2024, that limit is $168,600 — meaning once you earn that much in a calendar year, no more Social Security tax is withheld. The limit changes annually and is published by the Social Security Administration each October.

Medicare is 1.45% of all your gross pay with no upper limit. If your income exceeds $200,000 (or $250,000 if married filing jointly), an additional 0.9% Medicare tax applies to the amount above that threshold. This additional tax is sometimes called the Net Investment Income Tax, though it applies to wages as well.

To find your exact FICA deduction, look at your pay stub. It will show "Social Security" or "OASDI" (Old-Age, Survivors, and Disability Insurance) and "Medicare" as separate line items. Multiply your gross pay by the percentages above to verify the amounts are correct.

Why your employer's FICA payment doesn't show on your stub

Your employer pays FICA tax equal to what you pay — 6.2% for Social Security and 1.45% for Medicare. This is a real cost to the business, but it does not appear on your pay stub because it is not deducted from your wages. Your employer sends it directly to the IRS along with your portion.

This employer match is one reason your gross pay (the amount before deductions) is higher than your net pay (what you actually receive). The employer contribution is not part of your taxable income, so it does not affect your federal income tax return.

FICA for self-employed workers

If you are self-employed, you pay both the employee and employer portions of FICA, for a total of 15.3% (12.4% for Social Security up to the annual cap, plus 2.9% for Medicare). This is called self-employment tax and is calculated on Schedule SE, which you file with your tax return.

The IRS allows you to deduct half of your self-employment tax on your Form 1040, which reduces your taxable income. You also pay self-employment tax quarterly using Form 1040-ES if you expect to owe more than $1,000 for the year. Many self-employed people set aside 15% to 20% of net income to cover this obligation.

The Social Security wage cap and what happens when you hit it

Once your earnings reach the Social Security wage cap in a given year, your employer stops withholding the 6.2% Social Security tax. If you work for multiple employers or change jobs, each employer withholds based on what they pay you — they do not coordinate with other employers. This means you could overpay Social Security tax if your combined income from all jobs exceeds the cap.

If you overpay, you can claim a credit on your tax return. File Form 1040 and the IRS will refund the excess when you file. This often happens to people who work two jobs late in the year or change employers mid-year.

Medicare tax has no wage cap, so it continues to be withheld on every dollar you earn, no matter how much you make.

How FICA connects to your Social Security and Medicare benefits

FICA taxes fund your future Social Security retirement, disability, and survivor benefits. The amount you receive at retirement depends on how much you earned over your working years and when you claim — not on how much tax you paid. Higher earners receive higher benefits, but the formula is progressive, meaning lower earners get a larger percentage of their earnings replaced.

Medicare is funded by FICA as well. When you turn 65, you become may be able to access for Medicare Part A (hospital insurance) automatically if you have paid FICA taxes for at least 10 years (40 quarters). You do not have to claim it; enrollment is automatic if you are receiving Social Security.

You can view your Social Security earnings record and an estimate of your future benefits by creating a my Social Security account at ssa.gov. This record shows how much FICA tax has been credited to your account each year and is the basis for your benefit calculation.

FICA versus federal income tax withholding

FICA and federal income tax are two separate deductions. Federal income tax is based on your W-4 form and your income level; you can adjust it by changing your withholding elections. FICA is fixed by law and cannot be reduced by changing your W-4.

Some people confuse the two because they both appear on the pay stub. Federal income tax goes to the general Treasury; FICA goes to the Social Security and Medicare trust funds. If you want to reduce federal income tax withholding, you can update your W-4 with your employer. If you want to reduce FICA, your only option is to earn less — there is no form to file.

Frequently Asked Questions

Can I opt out of FICA taxes?

No. FICA is mandatory for nearly all workers. The only exceptions are certain government employees with their own pension systems and some religious groups that have filed for exemption. If you are a W-2 employee or self-employed, you cannot opt out.

What happens to FICA if I change jobs?

Each employer withholds FICA based on what they pay you. If your combined income from multiple jobs exceeds the Social Security wage cap, you may overpay. You can claim a credit on your tax return to recover the overpayment when you file.

Does FICA get refunded if I don't use Social Security or Medicare?

No. FICA is a tax, not a savings account. You cannot get a refund of FICA taxes paid, even if you do not claim Social Security or Medicare benefits. However, your contributions do build your may be able to access and benefit amount if you do claim later.

Why is FICA still withheld if I'm already receiving Social Security?

If you work while receiving Social Security, FICA is still withheld from your wages. This continues to build your earnings record and may increase your future benefit amount if you have not yet reached your full retirement age.

How do I know if my FICA withholding is correct?

Multiply your gross pay by 6.2% (up to the annual cap) for Social Security and 1.45% for Medicare. Compare the result to the amounts on your pay stub. If they do not match, contact your payroll department. You can also verify your lifetime FICA contributions on your Social Security statement at ssa.gov.