FICA tax is a separate payroll deduction that funds Social Security and Medicare, taken directly from your wages before you see your paycheck

FICA stands for the Federal Insurance Contributions Act. It is not income tax — it is a dedicated tax that pays for two specific programs: Social Security (retirement, disability, and survivor benefits) and Medicare (health insurance for people 65 and older, and some younger people with disabilities). Your employer withholds FICA from every paycheck and sends it to the U.S. Treasury on your behalf.

The amount withheld is a fixed percentage of your gross pay, up to a wage cap that changes each year. Unlike income tax, which depends on your filing status and deductions, FICA is the same percentage for almost everyone. You cannot reduce it by claiming dependents or adjusting your W-4. It comes out whether you owe federal income tax or not.

Key Takeaways

  • FICA has two parts: 6.2% for Social Security and 2.9% for Medicare, totaling 9.1% of your gross pay (your employer also pays an equal amount).
  • Social Security tax only applies to wages up to an annual cap, which was $168,600 in 2024, but Medicare tax applies to all wages with no cap.
  • Self-employed people pay both the employee and employer share of FICA, totaling 15.3%, though they can deduct half of it on their tax return.
  • FICA withholding appears on your pay stub as separate line items and is not affected by your income tax withholding or tax filing status.
  • You can see your lifetime FICA contributions and estimated benefits by creating an account on ssa.gov and viewing your Social Security statement.

How much FICA comes out of your paycheck

FICA has two components, each with its own rate. The Social Security portion is 6.2% of your gross wages, up to a wage base limit. In 2024, that limit was $168,600 per year, meaning once you earn that much in a calendar year, no more Social Security tax is withheld from your remaining paychecks. The Medicare portion is 2.9% of all your gross wages with no upper limit — it applies to every dollar you earn.

Together, the employee share of FICA is 9.1% of your gross pay. Your employer also pays 9.1% on your behalf, though you do not see that deduction on your pay stub. The employer contribution is a separate cost to the business and does not reduce your wages further.

If you earn $50,000 per year, FICA withholding would be approximately $4,550 (9.1% of $50,000). If you earn $200,000 per year, the Social Security portion stops after you hit the wage cap, so you pay 6.2% on $168,600 plus 2.9% on the full $200,000, which totals about $12,452 for the year.

Why FICA is separate from income tax withholding

Income tax and FICA are two different systems that fund different things. Income tax goes to the general Treasury and funds defense, infrastructure, federal agencies, and other government operations. FICA goes into dedicated trust funds — the Social Security Trust Fund and the Medicare Trust Fund — and is only used to pay benefits and administrative costs for those programs.

Because they fund different programs, they are calculated differently. Income tax withholding depends on your W-4 form, your filing status, and the number of dependents you claim. You can adjust your W-4 to change how much income tax is withheld. FICA, by contrast, is automatic and the same for nearly all workers — you cannot reduce it by changing your W-4 or claiming dependents.

On your pay stub, you will see FICA listed separately from federal income tax withholding (often labeled as "FIT" or "Federal Income Tax"). State income tax, if your state has one, is also a separate line. This separation reflects the fact that each tax funds a different program and follows different rules.

Self-employed workers and FICA

If you are self-employed, you pay both the employee and employer share of FICA yourself, totaling 15.3%. This is called Self-Employment Tax and is calculated on your net business income (your revenue minus deductible business expenses). You report it on Schedule SE when you file your tax return.

The self-employment tax rate is higher than what a W-2 employee pays because you are covering both sides of the contribution. However, the tax code allows you to deduct half of your self-employment tax on your income tax return, which reduces your taxable income. This deduction does not reduce the amount of self-employment tax you owe — it only reduces the income tax you owe on top of it.

Self-employed people must pay self-employment tax if their net business income is $400 or more in a year. They typically pay it in quarterly estimated tax payments rather than having it withheld from paychecks, since there is no employer to withhold it.

The wage cap and why it matters

The Social Security portion of FICA stops once you reach the annual wage base limit. In 2024, that limit was $168,600. This means a person earning $168,600 pays 6.2% on all of it, but a person earning $250,000 only pays 6.2% on the first $168,600 and nothing on the remaining $81,400.

The wage base limit increases most years based on average wage growth in the economy. The Social Security Administration announces the new limit in October for the following year. This cap exists because Social Security benefits are tied to your earnings history, and the program is designed to replace a portion of average worker earnings, not to tax high earners at the same rate as everyone else.

Medicare tax has no wage cap. Everyone pays 2.9% on all wages. Additionally, high earners (over $200,000 for single filers, $250,000 for married filing jointly) pay an extra 0.9% Medicare tax on wages above those thresholds. This additional tax was added in 2013 to help fund the Affordable Care Act.

How to read FICA on your pay stub

Your pay stub shows FICA withholding in separate line items. You will typically see "Social Security Tax" or "OASDI" (Old-Age, Survivors, and Disability Insurance) listed at 6.2%, and "Medicare Tax" listed at 2.9%. Some pay stubs also show a line for "Additional Medicare Tax" if you earn above the threshold.

Each line shows the amount withheld from that paycheck. If you are paid biweekly and earn $2,500 per paycheck, your FICA withholding would be roughly $227.50 per check (9.1% of $2,500). Over the course of a year, these amounts add up to your total FICA contribution.

You can also track your lifetime FICA contributions by viewing your Social Security statement. To access it, create a my Social Security account at ssa.gov. The statement shows your earnings history, the amount of Social Security tax you have paid each year, and an estimate of your future Social Security benefits based on your current earnings record.

What happens to FICA money after it is withheld

Your employer sends the FICA tax withheld from your paycheck, plus the employer's matching contribution, to the Internal Revenue Service on a regular schedule (usually monthly or quarterly, depending on the size of the payroll). The IRS then deposits the money into the Social Security Trust Fund and the Medicare Trust Fund.

Social Security benefits are paid from the Social Security Trust Fund to current retirees, disabled workers, and survivors of deceased workers. Medicare benefits are paid from the Medicare Trust Fund to may be able to access beneficiaries. The money you contribute today does not sit in an account with your name on it — it is pooled and used to pay current beneficiaries. When you retire, future workers' FICA contributions will help pay your benefits.

This is why Social Security and Medicare are sometimes called "pay-as-you-go" programs. The system depends on a steady flow of contributions from current workers to pay benefits to current retirees. If contribution rates fall or the number of retirees grows faster than the number of workers, the trust funds can face shortfalls.

Frequently Asked Questions

Can I opt out of paying FICA tax?

No. FICA is mandatory for all W-2 employees and self-employed workers with net business income of $400 or more. There is no option to reduce it or skip it, even if you do not plan to use Social Security or Medicare benefits. A few narrow exceptions exist for certain religious groups and some government employees, but these are rare and require specific approval.

Why do I pay FICA if I might not collect Social Security?

FICA funds not only retirement benefits but also disability insurance and survivor benefits for your family if you die. Even if you never retire, your dependents may receive benefits if you become disabled or pass away. Additionally, you must pay FICA to build the work credits needed to be may be able to access for any Social Security benefit in the future.

Does FICA withholding change if I get a raise or change jobs?

FICA withholding is always 6.2% for Social Security (up to the wage cap) and 2.9% for Medicare, so a raise will increase your FICA withholding proportionally. If you change jobs mid-year, your new employer starts withholding FICA from your first paycheck. If you earn above the Social Security wage cap at one job and then start a second job, you may overpay Social Security tax, but you can claim a credit for the overpayment when you file your tax return.

Is FICA tax the same as payroll tax?

FICA is one type of payroll tax, but not all payroll taxes are FICA. Payroll tax is a broad term that includes FICA (Social Security and Medicare), federal income tax withholding, and state and local income taxes. Some people use "payroll tax" and "FICA" interchangeably, but FICA specifically refers only to Social Security and Medicare contributions.

What if my employer did not withhold FICA from my paycheck?

Contact your employer when ready. They are legally required to withhold FICA and send it to the IRS. If they failed to do so, you are still liable for the tax, and your employer may face penalties. If your employer is not responsive, you can file a complaint with the Department of Labor or the IRS. Keep your pay stubs as evidence of the missing withholding.