FICA takes money from your paycheck to fund Social Security and Medicare

FICA stands for the Federal Insurance Contributions Act. It is a payroll tax that your employer withholds from your wages every pay period. The money goes to two programs: Social Security, which pays retirement and disability benefits, and Medicare, which pays for health insurance for people 65 and older and some younger people with disabilities.

FICA is not optional. If you work as an employee, your employer must withhold it. The amount comes directly out of your gross pay — the total before taxes — so you see the deduction on every paycheck stub.

The withholding happens automatically. You do not choose whether to participate. The only choice you have is whether to claim exemptions on your W-4 form, but those exemptions explore to income tax, not FICA.

Key Takeaways

  • FICA has two parts: 6.2% for Social Security and 2.9% for Medicare, taken from your paycheck each pay period.
  • Your employer also pays an equal amount of FICA tax on your behalf, though you do not see this on your stub.
  • FICA withholding stops at a certain income level for Social Security but continues without limit for Medicare.
  • The money you pay into FICA now funds current beneficiaries; your own future benefits depend on your earnings record and when you claim.

How much FICA comes out of your paycheck

FICA has two separate tax rates. The Social Security portion is 6.2% of your wages. The Medicare portion is 2.9% of your wages. Together, that is 15.3% of your pay — but you only see half of it on your paycheck.

Your employer withholds 7.65% from your gross pay (6.2% Social Security plus 2.9% Medicare). Your employer also pays 7.65% directly to the government on your behalf. You do not see the employer's share deducted from your check, but it is part of your total FICA cost.

If you are self-employed, you pay both halves yourself. That is 15.3% of your net self-employment income, which is why self-employed people often owe more in taxes overall.

The Social Security wage cap and why it matters

Social Security tax stops once your wages reach a certain level each year. In 2024, that limit is $168,600. Once you earn that much in a calendar year, your employer stops withholding the 6.2% Social Security tax for the rest of the year.

This limit changes every year. The Social Security Administration announces the new limit in October for the following year. If you change jobs mid-year, each employer withholds based on what you earn from them, so you could end up paying Social Security tax on more than the annual limit if your combined earnings across jobs exceed it. You can claim a refund of the overpayment when you file your tax return.

Medicare tax has no wage cap. You pay 2.9% on all your wages, no matter how much you earn. High earners also pay an additional 0.9% Medicare tax on wages over $200,000 (single) or $250,000 (married filing jointly), which started in 2013.

Where your FICA money goes

The Social Security portion of your FICA tax funds three programs: retirement benefits for people 62 and older, disability benefits for workers under 65 who cannot work, and survivor benefits for the families of deceased workers. The money does not sit in an account with your name on it. Instead, current Social Security taxes pay current beneficiaries.

The Medicare portion funds hospital insurance (Part A), which covers inpatient hospital stays, skilled nursing, hospice, and some home health care. It does not fund Medicare Part B (doctor visits) or Part D (prescription drugs), which are funded differently.

Your FICA record is tracked by your Social Security number. The Social Security Administration keeps a record of how much you paid in each year. This record determines how much you can receive in benefits later.

How FICA withholding appears on your pay stub

Your paycheck stub lists FICA deductions separately from federal income tax. You will see a line for "Social Security" or "OASDI" (Old-Age, Survivors, and Disability Insurance) showing 6.2% of your gross pay. You will see another line for "Medicare" showing 2.9%. Some stubs also show "Medicare Additional Tax" if you earn over the threshold.

The stub also shows year-to-date totals for each tax. This helps you track whether you have hit the Social Security wage cap. Once the Social Security deduction stops appearing mid-year, you know you have reached the limit.

If you have multiple jobs, each employer withholds FICA independently. This is why you might overpay Social Security tax if your combined earnings exceed the annual cap.

FICA versus income tax — why they are different

FICA and federal income tax are two separate withholdings. FICA funds Social Security and Medicare. Federal income tax funds general government operations and is based on your tax bracket, filing status, and the number of dependents you claim on your W-4.

You can reduce your federal income tax withholding by claiming more allowances on your W-4. You cannot reduce FICA withholding — it is a fixed percentage that applies to all employees. The only way to lower your FICA tax is to earn less or to use certain pre-tax deductions like a 401(k) or health savings account, which reduce your taxable wages.

FICA is also sometimes called a "payroll tax" because it is withheld from paychecks. Income tax is also withheld, but the term "payroll tax" usually refers to FICA.

What happens if you do not pay FICA

If you work as an employee, you do not have a choice about FICA. Your employer is required by law to withhold it. If an employer does not withhold FICA, they are breaking the law and can face penalties and back taxes.

If you work under the table or are paid cash without FICA withholding, you are still legally required to pay self-employment tax (which includes FICA) when you file your tax return. Not paying can result in penalties, interest, and in serious cases, criminal charges.

If you are an independent contractor or self-employed, you are responsible for paying your own FICA through quarterly estimated tax payments or when you file your annual return.

Frequently Asked Questions

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

FICA funds three Social Security programs: retirement, disability, and survivor benefits. Even if you never claim retirement benefits, you build a record that protects you if you become disabled or that protects your family if you die. Your family members may be able to collect survivor benefits based on your earnings record.

Can I opt out of FICA?

No. FICA is mandatory for all employees. The only exceptions are certain religious groups that have filed for exemption and some government employees hired before specific dates. If you are a regular employee, you must pay FICA.

What if I overpaid Social Security tax because I had multiple jobs?

You can claim a refund when you file your federal income tax return. The IRS will refund the amount you paid over the annual wage cap. You do not have to do anything special — the IRS calculates it automatically when processing your return.

Does FICA come out before or after federal income tax?

FICA comes out of your gross pay at the same time as federal income tax. Both are withheld before you receive your paycheck. FICA is calculated on your gross wages, while federal income tax is calculated after certain pre-tax deductions like 401(k) contributions.

If I am self-employed, how do I pay FICA?

Self-employed people pay self-employment tax, which is the self-employed version of FICA. You pay 15.3% on your net self-employment income. You can deduct half of this tax when calculating your adjusted gross income. You usually pay quarterly estimated taxes or pay the full amount when you file your annual return.