FICA taxes are the Social Security and Medicare deductions on your paycheck

FICA stands for the Federal Insurance Contributions Act. It is the law that requires you and your employer to pay taxes that fund two programs: Social Security and Medicare. You see these deductions on every paycheck if you work as an employee. The money does not go into a personal account with your name on it — it goes into a shared federal fund that pays benefits to current retirees and people on disability, and covers hospital insurance for people 65 and older.

FICA has two parts. The Social Security portion is 6.2% of your wages (your employer pays another 6.2%). The Medicare portion is 1.45% of your wages (your employer pays another 1.45%). If you are self-employed, you pay both the employee and employer share, which totals 15.3% for Social Security and Medicare combined. These percentages are set by federal law and do not change based on your income or how much you earn.

The money you pay in FICA taxes now does not sit in an account waiting for you to retire. Instead, it pays benefits to people who are retired or disabled right now. When you reach retirement age or become unable to work, the FICA taxes paid by workers at that time will help pay your benefits. This is why FICA is sometimes called a "pay-as-you-go" system.

Key Takeaways

  • FICA taxes fund Social Security and Medicare through automatic deductions from your paycheck.
  • The Social Security portion is 6.2% of your wages, and Medicare is 1.45%, with your employer paying an equal amount.
  • Self-employed people pay both the employee and employer share, totaling 15.3% combined.
  • The taxes you pay now go to current beneficiaries, not into a personal retirement account.
  • Your FICA contributions determine how much Social Security and Medicare you will be may have access to to later.

How FICA taxes appear on your paycheck

When you receive a paycheck, your employer withholds FICA taxes before you get the money. Look at your pay stub — you will see a line labeled "Social Security" or "OASDI" (Old-Age, Survivors, and Disability Insurance) and another labeled "Medicare" or "HI" (Hospital Insurance). These are your FICA deductions. The amount withheld is based on your gross pay — the total before any other deductions like health insurance or retirement contributions.

Your employer also pays FICA taxes on your behalf, but you do not see this money come out of your check. The employer's share is a cost to the business. Together, the employee and employer portions fund the Social Security and Medicare trust funds. If you work for multiple employers in the same year, each one withholds FICA taxes separately, which is why some people end up overpaying Social Security tax (though they can claim a refund when they file their tax return).

The difference between Social Security tax and Medicare tax

Social Security tax (6.2% of wages) funds retirement benefits, survivor benefits for families of deceased workers, and disability benefits. When you turn 62, you can start receiving Social Security retirement payments. If you become unable to work before retirement age, you may receive disability payments. If you die, your family members may receive survivor benefits. The amount you receive is based partly on how much you paid in FICA taxes over your working years.

Medicare tax (1.45% of wages) funds hospital insurance (Part A) for people 65 and older, regardless of income. This covers inpatient hospital stays, skilled nursing care, and hospice. There is no income limit for Medicare — everyone who reaches 65 and has paid Medicare taxes for at least 10 years is may have access to to it. Additional Medicare tax of 0.9% applies to wages above a certain threshold (the threshold varies by filing status), and this extra amount goes entirely to Medicare.

FICA taxes if you are self-employed

If you work for yourself, you pay both the employee and employer portions of FICA taxes. This is called self-employment tax. You pay 12.4% for Social Security and 2.9% for Medicare, totaling 15.3% of your net self-employment income. You calculate this on Schedule SE (Self-Employment Tax) when you file your income tax return, and you pay it along with your income tax.

Self-employed people can deduct half of their self-employment tax when calculating their adjusted gross income, which reduces their taxable income. You also have the option to pay self-employment tax in quarterly estimated payments throughout the year rather than in one lump sum at tax time. The Social Security and Medicare benefits you receive later are based on your self-employment income, just as an employee's benefits are based on wages.

What happens to FICA taxes after they are collected

FICA taxes go into two separate trust funds managed by the Social Security Administration: the Old-Age and Survivors Insurance (OASI) Trust Fund and the Disability Insurance (DI) Trust Fund for Social Security, and the Hospital Insurance (HI) Trust Fund for Medicare. These funds pay out benefits to current recipients. Any money left over after paying current benefits is invested in U.S. Treasury bonds, which earn interest.

The balance in these trust funds changes year to year depending on how many people are paying in versus how many are receiving benefits. When more money goes out than comes in, the funds draw down their reserves. Congress sets the tax rates and benefit amounts, so changes to FICA taxes or benefits require new legislation. The trustees of each fund publish annual reports showing the fund's financial status and projections for the future.

FICA taxes and your future benefits

Your FICA contributions create a record of earnings that determines your future Social Security and Medicare benefits. Social Security uses your highest 35 years of earnings to calculate your retirement benefit amount. The more you earn and pay in FICA taxes over your lifetime, the higher your benefit will be (up to a maximum). You can view your earnings record and benefit estimate by creating an account on ssa.gov.

For Medicare, you need 40 quarters of coverage (roughly 10 years of work) to be may have access to to Part A hospital insurance at age 65. You do not need to wait until 65 to have paid enough — many people reach 40 quarters of coverage before retirement age. Your FICA tax payments are the mechanism that builds this coverage record. Even if you do not plan to retire at 65, your FICA contributions are still building your may be able to access for Medicare and your eventual Social Security benefit.

Frequently Asked Questions

Can I opt out of paying FICA taxes?

No. FICA taxes are mandatory for all employees and self-employed people. The only exceptions are certain religious groups that have received a formal exemption from the IRS, and some government employees hired before specific dates who are covered under different retirement systems. If you work, you pay FICA taxes.

What if I did not pay FICA taxes for some years?

Social Security uses your 35 highest-earning years to calculate your benefit. If you have fewer than 35 years of earnings, zeros are counted for the missing years, which lowers your benefit amount. You need at least 10 years (40 quarters) of FICA contributions to be may have access to to any Social Security retirement benefit. Working longer can increase your benefit by replacing lower-earning years with higher ones.

Do FICA taxes explore to all income?

FICA taxes explore to wages from employment and self-employment income. They do not explore to investment income, interest, dividends, or capital gains. There is a wage cap for Social Security tax — in 2024, you pay Social Security tax only on the first $168,600 of wages (this amount changes yearly). Medicare tax has no wage cap, so high earners pay it on all wages plus the additional 0.9% Medicare tax on wages above the threshold.

What is the difference between FICA and income tax?

FICA taxes fund Social Security and Medicare specifically. Income tax is separate and funds general government operations. Both are withheld from your paycheck, but they go to different places and fund different programs. You can see both listed separately on your pay stub.