Federal 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 from your wages each pay period. The money funds two federal programs: Social Security (which pays retirement, disability, and survivor benefits) and Medicare (which pays for hospital insurance, medical insurance, and prescription drug coverage for people 65 and older, and some younger people with disabilities).

FICA has two parts. The Social Security portion is 6.2 percent of your gross wages, up to a wage cap that changes each year. The Medicare portion is 1.45 percent of your gross wages with no cap. If you are self-employed, you pay both the employee and employer share, which is 15.3 percent total (though you can deduct half on your tax return). Your employer withholds the employee share from your paycheck and sends both shares to the federal government.

FICA is separate from federal income tax withholding. You see both taken from your paycheck, but they fund different programs and have different rules about how much you contribute and when you can draw from them.

Key Takeaways

  • FICA taxes fund Social Security retirement benefits, disability benefits, survivor benefits, and Medicare hospital and medical insurance.
  • The Social Security portion is 6.2 percent of wages up to an annual cap; the Medicare portion is 1.45 percent with no wage cap.
  • Your employer withholds your share and contributes a matching share, both sent to the federal government.
  • Self-employed people pay both the employee and employer share, totaling 15.3 percent, though half is deductible on taxes.

How the Social Security portion of FICA works

The Social Security tax is 6.2 percent of your wages, but only up to a wage base limit. That limit changes each year based on average wage growth. In 2024, the limit was $168,600, meaning you pay 6.2 percent on the first $168,600 you earn in a year, then nothing on wages above that amount. In 2025, the limit is $176,100. Once you hit the cap in a given year, your employer stops withholding Social Security tax from the rest of your paychecks that year.

The money you contribute through Social Security tax builds a record of earnings. When you reach retirement age (which ranges from 66 to 67 depending on your birth year), you can claim Social Security retirement benefits based on your earnings history. If you become disabled or die, your family may be able to claim disability or survivor benefits based on your record, even if you have not yet reached retirement age.

You do not need to do anything to earn Social Security credits. Credits are awarded automatically based on your wages and FICA contributions. You need 40 credits (roughly 10 years of work) to be covered for retirement benefits, though fewer credits may be needed for disability or survivor benefits.

How the Medicare portion of FICA works

The Medicare tax is 1.45 percent of all your wages with no upper limit. Unlike Social Security, there is no wage cap, so you pay 1.45 percent on every dollar you earn, no matter how much you make in a year. This money funds Medicare Part A (hospital insurance) and helps fund Medicare Part B (medical insurance) and Part D (prescription drug coverage).

An additional Medicare tax of 0.9 percent applies if your wages exceed certain thresholds: $200,000 for single filers, $250,000 for married filing jointly, and $125,000 for married filing separately. Your employer withholds this additional tax once you cross the threshold in a given year. Unlike the regular Medicare tax, the additional Medicare tax is not matched by your employer.

You become covered for Medicare at age 65, regardless of whether you have claimed Social Security. You do not pay FICA taxes after you turn 65 if you are no longer working, but your FICA contributions during your working years count toward your Medicare coverage.

Why FICA taxes are withheld from your paycheck

FICA taxes are withheld automatically by your employer because they are mandatory. The law requires employers to deduct FICA from employee wages and to contribute a matching amount. Your employer sends both the employee withholding and the employer contribution to the Internal Revenue Service (IRS) and the Social Security Administration (SSA) on your behalf.

You cannot opt out of FICA taxes. Even if you do not plan to claim Social Security or Medicare, or if you believe you will not need them, the tax is still taken from your wages. The only exception is certain religious groups that have been granted exemptions under specific conditions, and some government employees hired before certain dates who are covered under different pension systems.

The withholding happens automatically so that the Social Security and Medicare trust funds receive steady funding throughout the year, rather than relying on people to pay a lump sum once a year.

FICA contributions and your Social Security record

Every time you pay FICA taxes, a record of your earnings is sent to the Social Security Administration. The SSA uses this record to calculate your Social Security benefits when you claim them. Your benefit amount is based on your 35 highest-earning years (for retirement benefits). If you have worked fewer than 35 years, zeros are counted for the missing years, which lowers your average.

You can view your earnings record and estimated benefits by creating an account on ssa.gov and accessing your Social Security Statement. The statement shows your earnings history, the credits you have earned, and an estimate of what your retirement, disability, or survivor benefits might be. Checking this record periodically helps you catch errors, such as earnings that were not credited to your account.

If you find an error on your earnings record, you can report it to the Social Security Administration with documentation such as W-2 forms or tax returns. The SSA has a limited time window to correct errors, so it is important to report them as soon as you notice them.

FICA taxes for self-employed people

If you are self-employed, you pay FICA taxes through the self-employment tax on your federal income tax return. You pay both the employee share (6.2 percent for Social Security, 1.45 percent for Medicare) and the employer share (another 6.2 percent for Social Security, another 1.45 percent for Medicare), for a total of 15.3 percent on your net self-employment income.

However, you can deduct half of your self-employment tax as a business expense on your tax return, which reduces your taxable income. You calculate self-employment tax on Schedule SE (Form 1040), and the amount flows to your main tax return. Like employees, self-employed people have a wage base limit for Social Security tax but no limit for Medicare tax.

Self-employed people still build Social Security credits and Medicare coverage the same way as employees. Your contributions are recorded with the Social Security Administration, and you can claim benefits based on your earnings history.

Frequently Asked Questions

What happens to FICA taxes after I pay them?

FICA taxes go into two separate trust funds managed by the Social Security Administration: the Old-Age and Survivors Insurance Trust Fund (which pays retirement and survivor benefits) and the Disability Insurance Trust Fund (which pays disability benefits). Medicare taxes go to the Hospital Insurance Trust Fund and the Supplementary Medical Insurance Trust Fund. These funds pay current beneficiaries and cover administrative costs.

Can I get my FICA taxes back if I don't claim Social Security?

No. FICA taxes are mandatory contributions to a social insurance system, not deposits into a personal account you own. If you die before claiming benefits, your family may be able to claim survivor benefits based on your earnings record. If you never claim and have no may be able to access survivors, the money remains in the trust fund.

Do I pay FICA taxes on all my income?

FICA taxes explore to wages from employment and self-employment income. They do not explore to investment income, interest, dividends, rental income, or other non-wage sources. However, if you have both wages and self-employment income, you pay FICA on both.

What is the wage base limit and why does it exist?

The Social Security wage base limit is the maximum amount of earnings subject to Social Security tax in a given year. It exists because Social Security benefits are designed to replace a portion of average earnings, not all earnings. The limit changes annually based on national wage growth. In 2025, it is $176,100.

Do FICA taxes count toward my income tax return?

FICA taxes are separate from federal income tax withholding. Both are taken from your paycheck, but they fund different programs. FICA taxes do not reduce your taxable income for federal income tax purposes, though self-employed people can deduct half of their self-employment tax.