Social Security tax is a payroll deduction that funds retirement, disability, and survivor benefits

Social Security tax is a percentage of your wages that your employer withholds from your paycheck and sends to the federal government. The money does not sit in an account with your name on it. Instead, it goes into a single trust fund that pays benefits to people who are currently retired, disabled, or whose family members have died. When you retire, the same system will pay your benefits from taxes collected from workers at that time.

The current rate is 6.2 percent of your wages, up to a yearly earnings cap. Your employer also pays 6.2 percent on your behalf — that is 12.4 percent total. If you are self-employed, you pay both portions yourself. The tax appears on your pay stub as "FICA" (Federal Insurance Contributions Act) or "Social Security".

Key Takeaways

  • Social Security tax is 6.2 percent of your wages, withheld from each paycheck, plus an equal amount your employer pays.
  • The earnings cap changes yearly — in 2024 you pay tax only on the first $168,600 of income, so high earners pay less as a percentage of total wages.
  • The money funds current retirees, disabled workers, and surviving family members, not a personal retirement account.
  • You need 40 work credits (roughly 10 years of work) to become may be able to access for your own retirement or disability benefits.

How the tax rate and earnings cap work

The 6.2 percent rate has been the same since 1990. What changes yearly is the earnings cap — the maximum amount of income subject to the tax. In 2024, you pay Social Security tax only on the first $168,600 of wages. Anything you earn above that is not taxed for Social Security (though it is still taxed for Medicare).

This means a person earning $50,000 pays tax on all $50,000. A person earning $200,000 pays tax on only $168,600 of it. The cap rises each year based on average wage growth in the country, so it will be different in 2025. The Social Security Administration publishes the new cap in October of each year.

Where Social Security tax money goes

Social Security operates as a pay-as-you-go system. The taxes collected this year pay benefits to three groups: people aged 62 and older who have retired, workers under 65 who receive disability benefits, and family members of deceased workers. About 67 million people receive a Social Security check each month.

The program does not invest your money or hold it in reserve. The trust fund operates more like a checking account — money comes in from current workers and goes out to current beneficiaries. When more money comes in than goes out, the surplus is held in reserve. When more goes out than comes in, the reserve is drawn down. The trustees project that at current rates, the reserve will be depleted around 2034, after which incoming tax revenue would cover roughly 80 percent of scheduled benefits unless Congress changes the law.

How work credits and may be able to access connect to the tax you pay

Paying Social Security tax builds your record of work credits. You earn one credit for each $1,730 of wages in 2024 (this amount changes yearly). You can earn up to four credits per year. Most people need 40 credits — roughly 10 years of work — to become may be able to access for retirement benefits at age 62 or later.

Disability benefits have a different requirement: you need fewer credits if you become disabled before age 24, but the standard is 40 credits with at least 20 earned in the 10 years before you became disabled. Survivor benefits for your family members also depend on your work record. The more you have paid in, the higher your eventual benefit will be, because benefits are calculated partly on your average earnings over your working years.

Self-employed workers and Social Security tax

If you are self-employed, you pay both the employee and employer portions of Social Security tax — 12.4 percent total on net self-employment income. You report this on Schedule SE (Self-Employment Tax) when you file your income tax return. You can deduct half of your self-employment tax as a business expense, which reduces your taxable income.

The earnings cap still applies. In 2024, you pay self-employment tax only on the first $168,600 of net self-employment income. If you have both W-2 wages and self-employment income, the cap applies to the combined total, so you do not pay twice on the same dollars.

What your Social Security statement shows

The Social Security Administration maintains a record of your earnings and the taxes you have paid. You can view your statement online at ssa.gov by creating a my Social Security account. The statement shows your estimated retirement benefit at age 62, your full retirement age (which depends on your birth year), and your estimated benefit at that age.

The statement also displays your earnings record for the past three years and your total lifetime earnings. If you spot an error — a missing year, a misspelled name, or wages credited to the wrong person — you should report it to Social Security within three years, three months, and 15 days of the year the error occurred. Errors can affect your benefit amount.

How Social Security tax differs from income tax

Social Security tax and income tax are separate deductions on your paycheck. Income tax goes to the Internal Revenue Service and funds general government operations. Social Security tax goes to the Social Security Administration and funds only the three benefit programs mentioned above. You cannot opt out of Social Security tax if you are an employee — it is mandatory. Self-employed people also cannot opt out, though certain religious groups can request an exemption.

Social Security tax is also regressive, meaning it takes a larger percentage of income from lower earners. A person earning $50,000 pays tax on 100 percent of their income. A person earning $500,000 pays tax on only about 34 percent of their income because of the earnings cap. This is one reason some people argue the cap should be raised or removed.

Frequently Asked Questions

Can I get a refund of Social Security tax I have already paid?

No. Social Security tax is not refundable. Once it is withheld and sent to the trust fund, it becomes part of the pool that pays current beneficiaries. You cannot reclaim it or redirect it to a personal account.

What happens to my Social Security taxes if I die before I retire?

Your family members may be may be able to access for survivor benefits based on your work record. A spouse caring for your children under 16, your children under 19 if still in high school, and your parents over 62 can all receive benefits. The total paid to your family is limited to a family maximum, typically 150 to 180 percent of what your retirement benefit would have been.

Do I pay Social Security tax on all my income?

No. You pay it only on wages up to the yearly earnings cap. In 2024 that cap is $168,600. Income from investments, rental property, or other sources not covered by Social Security is not subject to the tax. Some government employees who did not pay into Social Security during their career may have different rules.

If I work while receiving Social Security, do I still pay the tax?

Yes. If you are working and earning wages, your employer withholds Social Security tax from your paycheck regardless of whether you are also receiving benefits. However, if you claim benefits before your full retirement age and earn above a certain amount, your benefits may be temporarily reduced. The reduction stops once you reach full retirement age.