FICA Social Security tax is the money taken from your paycheck to fund the Social Security program

FICA Social Security tax, often called FICA SS or just Social Security tax, is a percentage of your gross wages that your employer withholds and sends to the federal government. As of 2024, that rate is 6.2 percent of your wages up to a cap (the cap changes yearly — in 2024 it is $168,600). Your employer also pays an equal 6.2 percent on your behalf, for a total of 12.4 percent.

The money does not go into a personal account with your name on it. Instead, it funds current Social Security benefits paid to retirees, disabled workers, and survivors of deceased workers. The Social Security Administration tracks how much you paid in over your working life, and that record determines your benefit amount when you reach retirement age or become unable to work.

You will see "FICA" or "OASDI" (Old Age, Survivors, and Disability Insurance) on your pay stub. Both refer to the same Social Security withholding. The amount changes if you earn more or less, and it stops being withheld once you hit the yearly wage cap.

Key Takeaways

  • FICA Social Security tax is 6.2 percent of your wages, withheld from every paycheck up to an annual cap that varies by year.
  • Your employer contributes an equal 6.2 percent, but that amount does not appear on your pay stub as a deduction from your pay.
  • The money funds current benefits for retirees, disabled workers, and their families — not a personal retirement account.
  • Your earnings record determines your future Social Security benefit amount, so accurate wage reporting matters for your retirement.

How much FICA Social Security tax comes out of your paycheck

The amount depends on your gross wages and the yearly wage cap. To find your withholding, multiply your gross pay by 0.062 (6.2 percent). If you earn $50,000 a year, your annual FICA Social Security tax is $3,100. If you earn $200,000, you pay on only the first $168,600 (in 2024), so your tax is $10,453.20, not $12,400.

The wage cap increases most years to keep pace with average wage growth. The Social Security Administration announces the new cap in October for the following year. This means if you change jobs mid-year or get a raise that pushes you over the cap, your withholding will stop once you reach it — you will not owe more FICA Social Security tax that year even if you earn more.

Self-employed people pay both the employee and employer portions (12.4 percent total) on their net business income, though they can deduct half of it as a business expense on their tax return.

Where your FICA Social Security tax money goes

Every dollar you pay in FICA Social Security tax goes into the Social Security Trust Fund, which when ready pays out benefits to people currently receiving them. The program operates on a pay-as-you-go system: current workers fund current retirees and beneficiaries.

The Social Security Administration does not set aside your specific contributions for your future use. Instead, your earnings record — the total amount you paid in over your working life — determines what monthly benefit you are may have access to to receive when you reach full retirement age, become disabled, or die (your family may then receive survivor benefits).

The Trust Fund also covers administrative costs of running the Social Security program, including processing applications, maintaining records, and issuing benefit payments.

How FICA Social Security tax affects your retirement benefit

The Social Security Administration calculates your benefit based on your 35 highest-earning years. The more you earned (and therefore the more FICA Social Security tax you paid), the higher your monthly benefit will be. If you have fewer than 35 working years, zeros are counted for the missing years, which lowers your average.

You must have earned at least 40 credits to receive any retirement benefit. One credit is earned for each $1,730 of wages in 2024 (the credit amount changes yearly). Most people earn four credits per year, so 40 credits typically takes 10 years of work.

Your benefit also depends on when you claim it. If you claim at your full retirement age (between 66 and 67 for people born in 1943 or later), you receive your full calculated amount. If you claim earlier, your monthly benefit is permanently reduced. If you delay past full retirement age, your benefit increases by about 8 percent per year until age 70.

FICA Social Security tax on your pay stub and tax return

On your pay stub, look for a line labeled "FICA," "Social Security," "OASDI," or "SS." The amount shown is 6.2 percent of your gross wages (or less if you have already hit the yearly cap). This is a deduction from your take-home pay.

On your federal tax return (Form 1040), FICA Social Security tax does not appear as a line item you fill in yourself. Your employer reports your wages and FICA withholding on Form W-2, which you receive by January 31. The IRS uses that form to verify you paid the correct amount. If you overpaid (because you worked for multiple employers and each withheld the full 6.2 percent), you can claim a refund on your return.

Self-employed people report FICA Social Security tax on Schedule SE (Self-Employment Tax), which is part of Form 1040. The amount is 12.4 percent of net business income, though you deduct half of it above the line on your return.

What happens if you work for multiple employers in one year

If you work for two or more employers in the same year, each one withholds 6.2 percent of your wages up to the yearly cap. If your combined earnings exceed the cap, you will have overpaid FICA Social Security tax.

For example, if you earned $100,000 at Job A and $80,000 at Job B in 2024, your total earnings are $180,000. Job A withheld $6,200 (6.2 percent of $100,000). Job B withheld $4,960 (6.2 percent of $80,000). But you should have paid tax on only $168,600 (the 2024 cap), which is $10,453.20. You overpaid by $706.80.

You recover the overpayment when you file your federal tax return. The IRS compares your W-2 forms and automatically refunds the excess, or applies it to other taxes you owe.

FICA Social Security tax and your earnings record

The Social Security Administration maintains a record of your earnings and FICA contributions under your Social Security number. This record is used to calculate your benefit amount and to verify your work history if you ever need to prove it.

You can view your earnings record online at ssa.gov by creating a my Social Security account. The record shows your reported wages for each year and alerts you to any discrepancies. If you spot an error — for example, wages that were not reported or were reported under the wrong name or number — you should contact the Social Security Administration to correct it. Errors can lower your future benefit.

If you worked under a different name or Social Security number in the past, make sure all your earnings are linked to your current number. Wages earned under a different identity will not count toward your benefit unless they are corrected in the system.

Frequently Asked Questions

Can I opt out of paying FICA Social Security tax?

No. FICA Social Security tax is mandatory for all employees and self-employed people with net earnings of $400 or more per year. The only exceptions are certain government employees hired before 1984 and some religious groups with specific beliefs against insurance, who must file Form 4029 with the IRS.

Does FICA Social Security tax count toward my income tax?

No. FICA Social Security tax is separate from federal income tax withholding. Both are deducted from your paycheck, but they fund different programs and are calculated differently. Your gross wages are subject to both.

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

If you have fewer than 40 credits, you will not receive a retirement benefit based on your own earnings. However, you may be able to receive a spousal or survivor benefit if you are married or if a family member who was insured passes away. Contact the Social Security Administration to learn what you may be may have access to to.

Does FICA Social Security tax explore to all types of income?

No. FICA Social Security tax applies only to wages from employment and net self-employment income. It does not explore to investment income, rental income, interest, or capital gains. Some types of compensation, like certain fringe benefits, are also exempt.

Will the FICA Social Security tax rate change in the future?

The rate is set by law at 6.2 percent and has not changed since 1990. However, Congress could change it. The wage cap increases automatically each year based on average wage growth, but the percentage rate itself requires a legislative change.