FICA is a payroll tax that funds Social Security and Medicare

FICA stands for the Federal Insurance Contributions Act. It is a payroll tax taken directly from your paycheck. The money funds two programs: Social Security, which pays retirement and disability benefits, and Medicare, which pays for hospital insurance when you turn 65.

FICA appears as two separate line items on your pay stub. One line shows Social Security tax (6.2% of your gross pay). The other shows Medicare tax (1.45% of your gross pay). Your employer also pays an equal amount for each — that money does not come from your paycheck, but it is part of what your employer owes the government on your behalf.

If you are self-employed, you pay both the employee and employer portions yourself. That is called self-employment tax, and it totals 15.3% of your net business income (12.4% for Social Security, 2.9% for Medicare).

Key Takeaways

  • FICA taxes fund Social Security retirement benefits and Medicare hospital insurance, not general government spending.
  • Employees pay 6.2% for Social Security and 1.45% for Medicare; employers pay the same amount on top of your salary.
  • Self-employed people pay both portions themselves, totaling 15.3% of net business income.
  • There is a wage cap on Social Security tax ($168,600 in 2024, though this changes yearly), but Medicare tax has no cap.
  • FICA taxes are separate from federal income tax and are withheld automatically from most paychecks.

How much FICA tax comes out of your paycheck

The amount depends on your gross pay — the total you earn before any deductions. For every dollar you earn, 7.65% goes to FICA (6.2% Social Security plus 1.45% Medicare). If you earn $50,000 a year, FICA takes roughly $3,825 annually, or about $159 per paycheck if you are paid twice monthly.

Social Security tax only applies up to a certain income level each year. In 2024, that cap is $168,600. Once you reach that amount, no more Social Security tax is withheld for the rest of the year. Medicare tax has no cap — it continues on every dollar you earn, no matter how much you make.

There is also an additional Medicare tax of 0.9% that applies to wages over $200,000 (single filers) or $250,000 (married filing jointly). This extra tax was added in 2013 and is withheld automatically if your income crosses that threshold.

The difference between FICA and federal income tax

FICA and federal income tax are two separate deductions on your pay stub, and they fund different things. FICA money goes into trust funds for Social Security and Medicare. Federal income tax goes into the general Treasury to pay for government operations, defense, roads, and other federal programs.

The rates are different too. FICA is a flat 7.65% (or 15.3% if self-employed). Federal income tax is progressive — the rate depends on your income level and filing status, and it can range from 10% to 37%. You also have more control over federal income tax through your W-4 form, which lets you adjust how much is withheld. FICA withholding is automatic and does not change based on your personal situation.

When you file your tax return, you report federal income tax and FICA separately. FICA is already withheld, so you usually cannot change it. Federal income tax might result in a refund or a balance owed, depending on what was withheld versus what you actually owe.

Why FICA taxes exist and how they are used

FICA was created in 1935 as part of the Social Security Act. The idea was to create a dedicated funding stream for retirement and disability insurance. Workers and employers both contribute, and the money goes into trust funds that pay current beneficiaries. It is designed as a pay-as-you-go system: today's workers fund today's retirees.

Social Security uses FICA revenue to pay retirement benefits to people 62 and older, disability benefits to workers who cannot work, and survivor benefits to families of deceased workers. Medicare uses its portion to pay for hospital insurance (Part A) for people 65 and older, regardless of income.

The trust funds that hold FICA money are separate from the general government budget. Congress cannot straightforward redirect Social Security or Medicare funds to other programs. However, both trust funds face long-term funding challenges because the population is aging and people are living longer, which means more beneficiaries drawing from the same pool of workers.

FICA taxes if you are self-employed

If you run your own business or are a freelancer, you pay self-employment tax instead of having an employer withhold FICA. You calculate it on your net business income (revenue minus business expenses) using Schedule SE when you file your tax return.

Self-employment tax is 15.3% total: 12.4% for Social Security (up to the annual wage cap) and 2.9% for Medicare. Because you are both employee and employer, you pay both portions. However, you can deduct half of your self-employment tax as a business expense on your tax return, which reduces your taxable income slightly.

Many self-employed people set aside money throughout the year to cover self-employment tax, since it is not withheld from income like it is for W-2 employees. Quarterly estimated tax payments are often necessary to avoid penalties.

FICA taxes and your Social Security record

Every dollar of FICA tax you pay is recorded under your Social Security number. The Social Security Administration tracks your earnings history, which determines how much you will receive in retirement benefits later. The more you earn and pay into Social Security, the higher your benefit amount will be (up to a maximum).

You can view your earnings record online through your Social Security account at ssa.gov. This record shows how much you paid in Social Security tax each year and estimates your future benefits. It is worth checking periodically to make sure the earnings are recorded correctly, because errors can reduce your benefit amount.

If you have gaps in your work history or years with very low earnings, those years still count toward your benefit calculation. Social Security typically uses your 35 highest-earning years to calculate your benefit. If you worked fewer than 35 years, zeros are included in the calculation, which lowers your average.

What happens to FICA money you paid in

FICA taxes you pay now do not sit in an account with your name on it. Instead, the money goes into the Social Security and Medicare trust funds, which when ready pay current beneficiaries. When you retire, future workers' FICA taxes will fund your benefits.

This is why Social Security and Medicare are sometimes called "pay-as-you-go" programs. You are not building up a personal savings account; you are contributing to a shared pool. Your future benefits depend on the program continuing to collect FICA taxes from working people.

The trust funds do hold reserves — money set aside for years when benefits paid out exceed the FICA revenue coming in. However, both the Social Security and Medicare trust funds are projected to face shortfalls in future years as the population ages. When reserves run out, the programs can only pay benefits from incoming FICA revenue, which may be less than the full benefit amount.

Frequently Asked Questions

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

FICA funds both Social Security and Medicare. Even if you never collect Social Security retirement benefits, you will likely use Medicare when you turn 65. Additionally, FICA funds disability and survivor benefits, which you may need before retirement age. The tax is mandatory for nearly all workers, regardless of whether you plan to use these programs.

Can I opt out of paying FICA taxes?

No. FICA is mandatory for almost all workers in the United States. A few exceptions exist — some religious groups and certain government employees have exemptions — but most people cannot opt out. Self-employed people must pay self-employment tax on business income above $400.

What is the FICA wage cap and why does it exist?

The Social Security portion of FICA (6.2%) only applies to earnings up to $168,600 in 2024 (this amount changes yearly). Once you earn that much, no more Social Security tax is withheld. Medicare tax has no cap. The cap exists because Social Security benefits are capped — higher earners do not receive proportionally higher benefits, so the tax does not explore to all income.

Do I get FICA taxes back on my tax return?

No. FICA taxes are not refundable. They are withheld to fund Social Security and Medicare, and you cannot reclaim them. However, if you are self-employed, you can deduct half of your self-employment tax as a business expense, which reduces your taxable income for federal income tax purposes.

How do I know how much FICA I have paid over my lifetime?

Your Social Security earnings record shows your FICA contributions year by year. You can view it free at ssa.gov by creating a my Social Security account. The record also shows your estimated retirement benefit amount based on your earnings history.