FICA tax is money your employer withholds from each paycheck for Social Security and Medicare

FICA stands for Federal Insurance Contributions Act. It is a payroll tax split into two parts: 6.2% goes to Social Security and 1.45% goes to Medicare. Your employer withholds both amounts directly from your gross pay before you see the money. If you are self-employed, you pay both the employee and employer portions yourself, which totals 15.3%.

The withholding happens automatically. You do not have to do anything to trigger it — your employer calculates it based on your wages and sends it to the U.S. Treasury on your behalf. The amount comes out the same way every pay period unless your income changes or you adjust your tax withholding.

FICA is separate from federal income tax, which is also withheld from your paycheck. You will see both listed on your pay stub. FICA is mandatory for almost all workers, including part-time employees, contractors who receive a W-2, and most government workers.

Key Takeaways

  • FICA tax is split between Social Security (6.2%) and Medicare (1.45%), totaling 7.65% of your gross pay for employees.
  • Your employer withholds FICA automatically and sends it to the federal government; you do not file separately for it.
  • Self-employed workers pay the full 15.3% because they cover both the employee and employer share.
  • FICA withholding stops once you reach the Social Security wage cap, which changes each year; Medicare withholding continues on all income.
  • You receive a record of your FICA contributions on your annual Social Security statement, which estimates your future benefits.

How much FICA comes out of each paycheck

The amount depends on your gross pay — the total you earn before any deductions. If you earn $2,000 in a pay period, FICA takes $153 (6.2% for Social Security plus 1.45% for Medicare). If you earn $5,000, FICA takes $382.50. The percentage stays the same regardless of how much you make, but there is one exception: the Social Security portion stops once you hit an annual wage cap.

The Social Security wage cap changes each year. In 2024, it was $168,600. Once you earn that much in a calendar year, your employer stops withholding the 6.2% Social Security tax for the rest of that year. The Medicare portion (1.45%) continues on all income with no cap. This means high earners pay less FICA overall as a percentage of their total income.

You can see the exact FICA amount on your pay stub under "FICA" or sometimes listed as "Social Security" and "Medicare" separately. If the number looks wrong, check that your gross pay is correct and that you have not already hit the Social Security wage cap earlier in the year.

Where FICA money goes after it leaves your paycheck

Your employer sends the FICA withholding to the U.S. Treasury, which deposits it into two trust funds: the Social Security Trust Fund and the Medicare Trust Fund. These are not personal accounts in your name. The money goes into a shared pool that pays current benefits to people who are retired, disabled, or receiving survivor benefits, and to people enrolled in Medicare.

Social Security uses the money to pay monthly benefits to retirees, disabled workers, and surviving family members of deceased workers. Medicare uses its portion to pay for hospital insurance (Part A), which covers inpatient care, and to help fund other Medicare programs. The system is pay-as-you-go: current workers' FICA contributions fund current beneficiaries' payments.

You do not get a separate account or investment return from FICA. Instead, you build a record of contributions that determines your future Social Security and Medicare may be able to access. The more you contribute over your working years, the higher your eventual Social Security benefit will be.

How FICA contributions affect your future Social Security benefit

Social Security calculates your benefit based on your highest 35 years of earnings. The more you contribute to FICA over your lifetime, the higher your monthly benefit will be when you retire. You must have at least 40 credits of FICA contributions to receive any Social Security benefit — one credit is roughly $1,470 of earnings in 2024, and you can earn up to four credits per year.

You can view your estimated future benefit on your Social Security statement, which the Social Security Administration mails to you each year or makes available online through your my Social Security account. The statement shows your lifetime FICA contributions and projects what you might receive at different retirement ages. This projection assumes you continue working and contributing at your current rate.

If you have gaps in your work history, those years count as zero earnings and lower your average. Conversely, if you work longer than 35 years, Social Security drops your lowest-earning years from the calculation, which can increase your benefit. The system rewards longer work histories and higher lifetime earnings.

FICA withholding for self-employed workers

If you are self-employed, you pay FICA through self-employment tax rather than through payroll withholding. You owe 15.3% of your net business income: 12.4% for Social Security and 2.9% for Medicare. This is double the employee rate because you cover both the employee and employer portions.

You calculate self-employment tax on Schedule SE when you file your annual tax return. You can deduct half of your self-employment tax as a business expense, which reduces your taxable income slightly. You must file a return and pay self-employment tax if your net business income is $400 or more in a year.

Self-employed workers do not have automatic withholding, so you may need to make quarterly estimated tax payments to avoid owing a large amount at tax time. The IRS provides Form 1040-ES to help you calculate these payments. Self-employment tax contributions count toward Social Security and Medicare the same way employee FICA contributions do.

What happens if you change jobs during the year

Your FICA withholding continues with each new employer. There is no reset or break — your contributions accumulate throughout the calendar year. If you hit the Social Security wage cap at one job and then move to another, your new employer will not withhold Social Security tax because you have already reached the cap for that year. However, if you move to a new job before hitting the cap, your new employer will start withholding Social Security tax again.

This can create a situation where you overpay Social Security tax if you work multiple jobs in the same year. For example, if you earn $100,000 at Job A and then $80,000 at Job B, you will have paid Social Security tax on all $180,000 even though the cap was $168,600. When you file your tax return, you can claim a credit for the overpayment, and the IRS will refund it.

Medicare withholding has no wage cap, so you will owe 1.45% on all income from all jobs. Additionally, if your total income from all sources exceeds certain thresholds ($200,000 for single filers, $250,000 for married filing jointly), you owe an additional 0.9% Medicare tax on the excess. This additional tax is withheld by your employer if your income from that job alone exceeds the threshold.

Frequently Asked Questions

Can I opt out of paying FICA tax?

No. FICA is mandatory for nearly all workers. A few narrow exceptions exist — some religious groups, certain government employees hired before specific dates, and some nonresident aliens — but most people cannot opt out. If you are unsure whether you may have access to for an exception, contact the Social Security Administration directly.

Why does my FICA withholding change from paycheck to paycheck?

If your pay varies, your FICA withholding will too, since it is calculated as a percentage of your gross pay. If you receive a bonus, commission, or overtime, that pay period will have higher FICA withholding. Once you hit the Social Security wage cap, the 6.2% Social Security portion stops, which will lower your total FICA for the rest of the year.

Do I get FICA taxes back when I file my tax return?

Not usually. FICA is a separate tax from federal income tax. However, if you overpaid Social Security tax due to working multiple jobs, you can claim a credit on your return. If you are self-employed and overpaid self-employment tax, you may also receive a refund. Federal income tax withholding is what typically generates refunds.

What if I did not work long enough to earn 40 Social Security credits?

You will not receive a Social Security retirement benefit. However, your family members may still be able to receive survivor benefits if you become disabled or die. Additionally, you may be able to receive benefits based on a spouse's or ex-spouse's work record if you meet other requirements.

Does FICA tax count toward my income tax return?

No. FICA and federal income tax are separate. FICA withholding does not reduce your federal income tax liability. However, you can deduct half of your self-employment tax as a business expense if you are self-employed, which lowers your taxable income.