FICA withholding is the money your employer takes from your paycheck for Social Security and Medicare

FICA withholding is a percentage of your gross pay that your employer deducts before you receive your paycheck. FICA stands for the Federal Insurance Contributions Act. 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). Your employer sends this money directly to the federal government, not to you.

The amount withheld is set by law and does not change based on your tax bracket or personal situation. In 2024, you pay 6.2% of your wages for Social Security and 1.45% for Medicare, for a total of 7.65%. Your employer also pays an equal amount on your behalf — that money does not come from your paycheck, but it counts toward your benefits. If you are self-employed, you pay both the employee and employer portions yourself, which totals 15.3%.

FICA withholding is separate from federal income tax withholding. You cannot avoid FICA withholding by claiming exemptions or changing your W-4 form. Everyone who works pays it, with very few exceptions (some religious groups and certain government employees have exemptions, but these are rare).

Key Takeaways

  • FICA withholding is 7.65% of your paycheck for Social Security and Medicare combined, taken automatically by your employer.
  • Your employer matches your FICA contribution with an equal amount, though you do not see this money on your paycheck.
  • FICA withholding is mandatory and cannot be reduced or avoided through tax forms or personal choices.
  • The money you pay in FICA goes into two separate trust funds that pay current retirees and disabled workers, not into an account with your name on it.
  • Self-employed people pay both the employee and employer portions of FICA, totaling 15.3% of their net business income.

How much FICA withholding comes out of your paycheck

The Social Security portion is 6.2% of your gross wages, up to a cap. In 2024, you stop paying Social Security tax once your wages reach $168,600 for the year. After that threshold, no more Social Security withholding happens for the rest of the year. This means higher earners pay a smaller percentage of their total income into Social Security than lower earners do.

Medicare withholding is 1.45% of your gross wages with no income cap — you pay it on every dollar you earn, no matter how much you make. Additionally, if your income exceeds certain thresholds ($200,000 for single filers, $250,000 for married filing jointly), you pay an extra 0.9% Medicare tax on the amount above the threshold. This extra tax is withheld by your employer if your wages cross that line.

To see how much FICA is being withheld from your specific paycheck, look at your pay stub. It will show separate line items for Social Security tax and Medicare tax. If the numbers seem wrong, contact your employer's payroll department — errors in FICA withholding are uncommon but do happen.

Where FICA money goes and how it is used

FICA taxes fund two separate trust funds managed by the Social Security Administration and the Centers for Medicare & Medicaid Services. The Social Security portion (6.2%) goes into the Old-Age, Survivors, and Disability Insurance (OASDI) trust fund. This fund pays monthly benefits to people who are retired, disabled, or the surviving family members of workers who have died. The money does not sit in an account with your name on it — it goes into a shared pool that pays current beneficiaries.

The Medicare portion (1.45%) goes into the Hospital Insurance Trust Fund, which pays for inpatient hospital care, skilled nursing facility care, hospice, and home health services for people 65 and older. The extra 0.9% Medicare tax on high earners also goes into this fund.

The amount of Social Security or Medicare benefits you receive later is based on your earnings record and how long you worked, not on how much you personally paid in. Someone who earned more during their working years will receive a higher benefit, but the relationship is not one-to-one. The system is designed so that lower earners receive a higher percentage of their pre-retirement income as a benefit.

FICA withholding for self-employed workers

If you are self-employed, you pay FICA taxes through self-employment tax rather than through payroll withholding. You calculate this on Schedule SE (Self-Employment Tax) when you file your annual tax return. The self-employment tax rate is 15.3% — 12.4% for Social Security and 2.9% for Medicare — applied to 92.35% of your net business income.

The reason the rate is higher than the employee rate is that you are paying both the employee portion (7.65%) and the employer portion (7.65%). However, you can deduct half of your self-employment tax as a business expense on your tax return, which reduces your taxable income. This deduction partially offsets the burden of paying both portions.

Self-employed people must make estimated tax payments throughout the year if they expect to owe more than $1,000 in federal taxes. These payments include both income tax and self-employment tax. If you do not pay enough during the year, you may owe a penalty when you file your return, even if you ultimately get a refund.

FICA withholding and your Social Security record

Every dollar of FICA tax you pay is recorded by the Social Security Administration under your Social Security number. This creates your earnings record, which the SSA uses to calculate your future Social Security benefits. You can view your earnings record by creating an account at ssa.gov and accessing your Social Security Statement.

Your earnings record shows how much you paid into Social Security for each year you worked. If you see errors — such as wages that were not reported or were reported under the wrong name — you should contact the SSA to correct them. Errors can reduce your future benefit amount, so it is worth checking periodically, especially after changing jobs.

FICA withholding history also affects when you become fully insured for Social Security benefits. You need 40 credits (roughly 10 years of work) to receive retirement benefits at your full retirement age. Each year you earn above a certain threshold (in 2024, $1,632 per quarter), you earn one credit, up to a maximum of four credits per year.

What happens if you overpay or underpay FICA

If your employer withholds too much FICA tax — for example, because you worked at multiple jobs and hit the Social Security wage cap at each one — you can claim a refund when you file your tax return. This can happen to people who change jobs mid-year or work multiple part-time positions. You report the overpayment on your tax return, and the IRS will refund the excess.

If your employer underpays or fails to withhold FICA tax, you are still liable for the tax. The IRS can pursue you for the unpaid amount, plus penalties and interest. However, if your employer is the one who failed to withhold and you had no way of knowing, you may have grounds to dispute the liability. Contact the IRS or a tax professional if this happens to you.

Underpayment of self-employment tax is handled differently. If you do not pay enough through estimated tax payments, the IRS will charge you a penalty when you file your return. The penalty is based on how much you underpaid and how long you underpaid it. You can reduce or eliminate the penalty by making a payment before filing or by showing that you had a reasonable cause for the underpayment.

FICA withholding for non-citizens and visa holders

Most people working in the United States, regardless of immigration status, must pay FICA taxes if they are employed. This includes people on work visas (H-1B, L-1, etc.), people with green cards, and some undocumented workers. Your employer withholds FICA based on your wages, not your immigration status.

The main exception is certain visa holders who are in the United States temporarily and are not considered residents for tax purposes. This includes some students on F-1 visas and exchange visitors on J-1 visas, though the rules are complex and depend on how long you have been in the country and your specific visa type. If you are unsure whether you must pay FICA, ask your employer or contact a tax professional who handles international workers.

Frequently Asked Questions

Can I opt out of FICA withholding?

No. FICA withholding is mandatory for all employees and self-employed people, with very limited exceptions for certain religious groups and some government employees. You cannot reduce it by changing your W-4 form or claiming exemptions. The only way to lower your FICA tax is to earn less income.

Why do I pay FICA if I might not receive Social Security benefits?

FICA funds two programs: Social Security and Medicare. Even if you never receive Social Security retirement benefits, you will be covered by Medicare at age 65 if you have paid FICA taxes for at least 10 years. Additionally, your family members may receive survivor benefits if you die, and you may receive disability benefits if you become unable to work.

What is the difference between FICA withholding and federal income tax withholding?

FICA withholding is a fixed percentage (7.65%) that funds Social Security and Medicare. Federal income tax withholding is based on your W-4 form and your tax bracket, and it funds general government operations. Both are deducted from your paycheck, but they go to different programs and are calculated differently.

Do I get back the FICA taxes I paid if I leave the country?

Generally, no. FICA taxes are not refundable just because you leave the country. However, if you are not a U.S. citizen and you leave permanently, you may be able to withdraw your contributions under certain circumstances. The rules vary by country and visa status. Contact the SSA or a tax professional for your specific situation.

How do I know if my FICA withholding is correct?

Check your pay stub each time you are paid. It should show the gross amount withheld for Social Security (6.2%) and Medicare (1.45%). If you have multiple jobs, make sure neither employer is withholding more than the Social Security cap allows. You can also review your earnings record on ssa.gov to confirm the SSA has recorded your wages correctly.