FICA tax is the money taken from your paycheck to fund Social Security and Medicare
FICA stands for Federal Insurance Contributions Act. It is a payroll tax split between two programs: Social Security (which pays retirement, disability, and survivor benefits) and Medicare (which pays for hospital insurance when you turn 65). Your employer withholds FICA from every paycheck, and you contribute a matching amount yourself—the employer's share is separate from what you see deducted.
The tax appears as two line items on your pay stub: one labeled Social Security and one labeled Medicare. Together they make up about 7.65% of your gross pay, though the exact amount depends on your income level and whether you are self-employed. Unlike income tax, which varies based on your filing status and deductions, FICA is a flat percentage that applies the same way to nearly all workers.
Key Takeaways
- FICA has two parts: 6.2% goes to Social Security and 1.45% goes to Medicare, taken directly from your paycheck.
- Your employer pays an equal amount on your behalf, so the total FICA cost is actually double what you see deducted.
- Social Security tax stops once you earn a certain amount each year (the wage base limit), but Medicare tax continues on all earnings above that.
- Self-employed workers pay both the employee and employer share of FICA, which is why their self-employment tax is roughly double.
- FICA is separate from federal income tax and is not affected by your deductions or filing status.
How much FICA comes out of your paycheck
The Social Security portion is 6.2% of your gross pay, up to a wage base limit that changes each year. In 2024, that limit is $168,600, meaning once you earn that much in a calendar year, no more Social Security tax is withheld from your remaining paychecks. The Medicare portion is 1.45% of your gross pay with no upper limit—it continues on every dollar you earn, no matter how high your income goes.
If your income exceeds $200,000 (or $250,000 if married filing jointly), an additional 0.9% Medicare tax applies to the amount over that threshold. This is sometimes called the Net Investment Income Tax or Additional Medicare Tax, and it is withheld the same way as regular FICA.
To see the exact amounts, look at your pay stub. Find the lines labeled "Social Security" and "Medicare" under deductions. Multiply your gross pay by 0.062 for Social Security and 0.0145 for Medicare to verify the math is correct. If you have already hit the Social Security wage base for the year, the Social Security line should show zero.
Why your employer pays FICA too
When you see 7.65% withheld from your paycheck, that is only your half. Your employer is required to pay an identical 7.65% on your behalf—6.2% to Social Security and 1.45% to Medicare. This employer contribution does not appear on your pay stub because it is not deducted from your wages; it is a separate cost to the business.
The total FICA cost to fund your Social Security and Medicare accounts is therefore 15.3%, split evenly between you and your employer. This matters because it affects how much you are actually earning in the eyes of these programs. When you eventually draw Social Security benefits, the calculation includes both the employee and employer contributions made on your behalf over your working years.
The difference between FICA and income tax
FICA and federal income tax are two separate deductions that both appear on your paycheck, but they work very differently. Income tax is based on your filing status, the number of dependents you claim, and any deductions or credits you are may have access to to. FICA is a flat percentage with no adjustments—it is the same whether you are single, married, have ten children, or claim zero dependents.
Income tax is also progressive, meaning higher earners pay a higher percentage. FICA is regressive: it stops (for Social Security) or continues at a fixed rate (for Medicare) regardless of income. This is why someone earning $50,000 pays the same 6.2% Social Security tax as someone earning $500,000, though the higher earner stops paying once they hit the wage base.
You can adjust how much income tax is withheld by filing a new W-4 form with your employer, but you cannot reduce FICA withholding—it is mandatory for nearly all workers. The only exceptions are certain government employees, some religious groups, and a few other narrow categories.
What happens to the FICA money you pay
The Social Security portion funds three separate benefit programs: retirement benefits (the most common), disability benefits for workers who cannot work due to injury or illness, and survivor benefits for the families of workers who die. When you turn 62, you can begin drawing retirement benefits based on your earnings record. The amount depends on how much you earned over your lifetime and when you choose to start—waiting until 70 increases your monthly payment.
The Medicare portion funds hospital insurance (Part A), which covers inpatient hospital stays, skilled nursing care, and hospice. When you turn 65, you become may be able to access for Medicare regardless of your income. You do not need to have paid FICA taxes to receive Medicare, but your years of contributions affect whether you pay a premium for Part A coverage.
Both programs operate on a pay-as-you-go system: the FICA taxes collected from current workers fund benefits paid to current retirees and disabled beneficiaries. This is why changes to the programs are often debated—as the population ages, fewer workers support each beneficiary.
Self-employed workers and FICA
If you are self-employed, you pay both the employee and employer share of FICA, totaling 15.3%. This is called self-employment tax and is calculated on your net business income (your revenue minus business expenses). You pay it when you file your annual tax return using Schedule SE.
Self-employed workers can deduct half of their self-employment tax from their income before calculating federal income tax, which provides some relief. However, the full 15.3% still goes toward your Social Security and Medicare accounts. If you have both self-employment income and a W-2 job, you may overpay Social Security tax if your combined earnings exceed the wage base—you can claim a credit for the overpayment when you file your return.
Checking your FICA contributions over time
You can view your lifetime FICA contributions and your estimated Social Security benefits by creating an account on ssa.gov and requesting your Social Security Statement. This document shows your earnings record year by year and estimates what you will receive at different retirement ages. It also shows your Medicare coverage status.
Review your statement every few years to catch errors. If your employer reported your earnings incorrectly, you have a limited time to correct it—usually three years, three months, and 15 days from the end of the year in which you earned the income. Contact the Social Security Administration if you spot a discrepancy.
Frequently Asked Questions
Why does FICA keep going up on my paycheck?
FICA itself does not change—it is always 6.2% for Social Security and 1.45% for Medicare. What changes is your gross pay. If you received a raise or worked more hours, your FICA deduction increases because it is a percentage of your earnings. The wage base limit for Social Security also increases slightly each year, which can affect how much you pay if you are near that threshold.
Can I opt out of paying FICA?
No. FICA is mandatory for nearly all workers in the United States. A few exceptions exist, such as certain government employees hired before specific dates and members of some religious groups that have formal exemptions, but these are rare. If you are a W-2 employee or self-employed, you must pay FICA.
What if I worked in another country—does that count toward Social Security?
It depends on whether the United States has a totalization agreement with that country. These agreements allow you to combine work credits from both countries to reach the 40 credits needed for Social Security. Check ssa.gov or contact the Social Security Administration to learn whether your country of work qualifies.
Do I get FICA back if I do not use Social Security or Medicare?
No. FICA is a mandatory tax, not an optional savings account. Even if you never draw Social Security benefits or use Medicare, the money you paid goes to fund the programs. You cannot reclaim it or redirect it to a personal account.
How much will I receive in Social Security benefits?
Your benefit amount depends on your highest 35 years of earnings and the age at which you start collecting. You can see an estimate on your Social Security Statement at ssa.gov. Benefits are not based solely on how much FICA you paid—the formula is progressive, meaning lower earners receive a higher percentage of their contributions back.