FICA taxes fund Social Security and Medicare, two federal insurance programs that pay benefits to retirees, disabled workers, and their families

When you see "FICA" on your pay stub, you are looking at money withheld for two separate programs. Social Security takes 6.2 percent of your wages (up to a yearly cap that changes annually). Medicare takes 1.45 percent with no cap. Together, these withholdings fund the actual benefit checks and healthcare coverage that millions of Americans receive each month.

The money does not sit in an account with your name on it. Instead, FICA taxes from current workers pay benefits to current beneficiaries — retirees, people on disability, surviving spouses and children of deceased workers, and people over 65 enrolled in Medicare. Your employer matches your FICA contribution dollar for dollar, so the total going into these programs is double what you see withheld from your paycheck.

Understanding where FICA goes matters because it shapes what you can expect to receive later. The amount you paid in, the age you start collecting, and how long you live all affect your eventual benefit. For Medicare, your FICA history determines whether you pay premiums and what your out-of-pocket costs will be.

Key Takeaways

  • FICA funds Social Security retirement benefits, disability benefits, and survivor benefits for workers' families.
  • FICA also funds Medicare Part A, which covers hospital stays, skilled nursing, and hospice care for people 65 and older.
  • Your FICA contributions are tracked by the Social Security Administration under your Social Security number, and your work history determines your future benefit amount.
  • You must have earned at least 40 FICA-covered work credits (roughly 10 years of work) to receive Social Security retirement or Medicare benefits.
  • FICA withholding stops once you reach the yearly Social Security wage base, which varies by year.

How Social Security uses FICA taxes

Social Security uses FICA revenue to pay three types of benefits. Retirement benefits go to workers who reach their full retirement age (which ranges from 66 to 67 depending on birth year) or who claim early at 62. The amount you receive is based on your 35 highest-earning years of FICA-covered work.

Disability benefits go to workers under full retirement age who cannot work due to a severe medical condition expected to last at least 12 months or result in death. You do not have to be 62 or older to receive this benefit — you only need enough work credits, which typically means five years of FICA-covered work in the past ten years.

Survivor benefits go to your spouse, ex-spouse, and children if you die. A surviving spouse can receive benefits at 60 (or 50 if disabled), and children can receive benefits until age 19 if still in high school, or age 16 if disabled before age 22. The total amount paid to your family cannot exceed about 175 to 180 percent of what you would have received at full retirement age.

How Medicare uses FICA taxes

The Medicare portion of FICA (1.45 percent) funds Medicare Part A, which covers inpatient hospital care, skilled nursing facility stays, home health services, and hospice care. Part A is automatic for anyone 65 or older who has paid FICA taxes for at least 10 years (40 work credits). You do not pay a monthly premium for Part A if you meet this requirement.

If you did not pay FICA for 10 years, you can still buy into Part A at age 65, but you will pay a monthly premium. The premium amount depends on how many years of FICA-covered work you did have. Part A also has a deductible you pay when you are admitted to the hospital, and copayments for longer stays.

Medicare Part B (doctor visits and outpatient care) and Part D (prescription drugs) are funded differently — through general tax revenue and beneficiary premiums — so FICA does not directly pay for those. However, your FICA history still affects whether you pay higher premiums for these parts based on your income.

The yearly wage cap and what happens after

Social Security FICA withholding (6.2 percent) stops once you earn above a certain amount each year. That amount is called the wage base, and it changes annually. In 2024, the wage base was $168,600, meaning you stop paying Social Security FICA once you earn that much in a calendar year. After that point, only Medicare FICA (1.45 percent) continues to be withheld from your paycheck.

This cap means high earners pay a smaller percentage of their total income into Social Security than lower earners do. However, Social Security benefits are also capped — your monthly check does not increase beyond a maximum amount, even if you earned far above the wage base. The benefit formula is weighted to replace a higher percentage of lower earners' income.

If you work for multiple employers in the same year and together earn above the wage base, you may overpay Social Security FICA. When you file your tax return, you can claim a credit for the overpayment, and the IRS will refund it to you.

Self-employed workers and FICA

If you are self-employed, you pay both the employee and employer portions of FICA — a total of 15.3 percent (12.4 percent for Social Security, 2.9 percent for Medicare). You pay this as self-employment tax on Schedule SE when you file your tax return. The Social Security wage base cap still applies, so self-employment tax stops once your net self-employment income reaches that year's limit.

Self-employed workers can deduct half of their self-employment tax as an adjustment to income on their tax return, which reduces their taxable income. Despite paying both portions, self-employed workers build the same Social Security and Medicare credits as employees do — the FICA amount is what matters, not whether it came from wages or self-employment income.

What happens to FICA revenue that is not paid out when ready

Social Security and Medicare each maintain a trust fund. When FICA revenue exceeds the amount paid out in benefits, the surplus goes into the trust fund. When benefits exceed revenue, the trust fund covers the difference. These trust funds are invested in special U.S. Treasury bonds that earn interest.

Social Security's trust fund is projected to be depleted around 2034 if no changes are made to the program. At that point, incoming FICA revenue would cover roughly 80 percent of scheduled benefits. Congress would need to act — either by raising the wage base, increasing the FICA rate, reducing benefits, or raising the full retirement age — to keep the program fully funded beyond that date.

Medicare Part A's trust fund faces a similar but separate timeline. These projections change each year based on wage growth, life expectancy, and healthcare costs, so the exact depletion dates shift. The point is that FICA revenue today is not just paying current benefits — it is also building reserves meant to smooth out future imbalances.

How to check your FICA contribution record

The Social Security Administration tracks every FICA payment you make under your Social Security number. You can view your earnings record and estimated benefits by creating an account at ssa.gov and accessing "my Social Security." This record shows your reported earnings for each year and the work credits you have earned.

Checking your record periodically is useful because errors can happen. If your employer reported your wages incorrectly, you may have fewer work credits than you should, which could reduce your future benefit. You have a limited time to correct errors — typically three years, three months, and 15 days from the end of the year the wages were earned — so catching mistakes early matters.

Your Social Security statement also shows your estimated retirement benefit at full retirement age, your estimated disability benefit, and your family's estimated survivor benefits. These are projections based on your current earnings record and assume you continue working and earning at a similar level until retirement.

Frequently Asked Questions

Can I get my FICA taxes back if I never claim Social Security or Medicare?

No. FICA is a tax, not a savings account. If you die before claiming benefits, your FICA contributions do not go back to your estate. However, your surviving spouse, ex-spouse, or children may be able to claim survivor benefits based on your work record, which is a way your FICA contributions benefit your family.

What if I did not pay FICA for 10 years — can I still get Medicare?

Yes, but you will pay a monthly premium for Medicare Part A starting at age 65. The premium is higher if you have fewer than 30 years of FICA-covered work. You can also buy into Part A voluntarily if you are 65 or older, even if you never paid FICA, though the premium will be the maximum amount.

Does FICA withholding explore to all types of income?

No. FICA applies to wages and self-employment income, but not to investment income, rental income, or most other sources. Some government employees hired before specific dates are not covered by Social Security FICA, though they may pay into a different retirement system instead.

If I work part-time and do not earn much, am I still building Social Security credits?

Yes. You earn one work credit for every $1,730 of FICA-covered wages in 2024 (this amount changes yearly). You can earn up to four credits per year. Even part-time work counts toward the 40 credits needed for Social Security retirement and Medicare benefits.

What is the additional Medicare tax, and is that part of FICA?

The additional Medicare tax is a 0.9 percent withholding that applies to wages above $200,000 for single filers (or $250,000 for married filing jointly). It is separate from the standard 1.45 percent Medicare FICA tax and funds Medicare Part A. Your employer withholds it automatically if your wages exceed the threshold.