Social Security Tax Is Taken From Your Paycheck and Your Employer's

Social Security tax is a payroll tax that funds the Social Security program. It comes out of your paycheck automatically — 6.2 percent of your gross wages — and your employer contributes an equal 6.2 percent on your behalf. If you are self-employed, you pay both portions yourself, which comes to 12.4 percent of your net earnings.

The money does not go into a personal 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 surviving family members of workers who have died. When you retire, your own benefits come from taxes paid by workers at that time, not from money you set aside decades earlier.

Your employer withholds the employee portion from your paycheck before you receive it. You can see this listed as "Social Security" or "OASDI" (Old-Age, Survivors, and Disability Insurance) on your pay stub. The amount changes only if your wages change — the tax rate itself stays at 6.2 percent for employees.

Key Takeaways

  • Social Security tax is 6.2 percent of your wages if you are an employee, withheld automatically from your paycheck.
  • Your employer pays an additional 6.2 percent, and self-employed people pay the full 12.4 percent themselves.
  • There is a wage cap — in 2024, you pay Social Security tax only on the first $168,600 of earnings, so high earners pay a smaller percentage of total income.
  • The tax funds current retirees and disabled workers, not a personal savings account in your name.
  • You can view your estimated future benefits and check your earnings record on the Social Security Administration website using a personal account.

The Wage Cap Means High Earners Pay Less as a Percentage

Social Security tax only applies to earnings up to a certain limit, called the wage cap. In 2024, that cap is $168,600. This means if you earn $200,000 a year, you pay Social Security tax only on the first $168,600 — not on the remaining $31,400.

The wage cap increases most years, tied to average wage growth in the country. This is why the limit was different in 2023 ($160,200) and will likely be different in 2025. You can find the current year's cap on the Social Security Administration website or on your employer's tax documents.

Because of the wage cap, people who earn more money pay a smaller percentage of their total income in Social Security tax. Someone earning $50,000 pays 6.2 percent on all of it. Someone earning $500,000 pays 6.2 percent only on the first $168,600, which works out to about 2 percent of their total income.

How Social Security Tax Differs From Income Tax

Social Security tax and federal income tax are two separate deductions on your paycheck. Social Security tax is a flat 6.2 percent with a wage cap. Federal income tax varies based on your tax bracket, filing status, and deductions — it has no wage cap, and the rate can be anywhere from 10 to 37 percent depending on how much you earn.

Social Security tax funds only the Social Security program. Federal income tax goes into the general Treasury and funds many government operations — defense, infrastructure, federal employee salaries, and hundreds of other programs. You will also see Medicare tax on your paycheck (1.45 percent), which is separate from both.

When you file your annual tax return, you do not recalculate Social Security tax the way you might adjust federal income tax withholding. The amount withheld during the year is final — you cannot claim a refund of Social Security tax, and you cannot reduce it through deductions or credits.

Self-Employed Workers Pay the Full Amount

If you are self-employed, you pay both the employee and employer portions of Social Security tax yourself. This is called self-employment tax, and it totals 12.4 percent for Social Security plus 2.9 percent for Medicare (15.3 percent combined).

You calculate self-employment tax on your net earnings — your business income minus business expenses — not your gross revenue. You report this on Schedule SE when you file your tax return. The good news is that you can deduct half of your self-employment tax as a business expense, which reduces your taxable income.

The wage cap still applies. In 2024, you pay the 12.4 percent Social Security portion only on the first $168,600 of net self-employment income. Once you reach that cap, you stop paying Social Security tax for the rest of the year, though you continue paying Medicare tax on all earnings.

Your Earnings Record and Future Benefits

The Social Security Administration tracks how much you have paid in Social Security tax throughout your working life. This record determines how much you can receive in retirement, disability, or survivor benefits. The more you earn (up to the wage cap) and the longer you work, the higher your future benefit amount will be.

You can create a personal account on the Social Security Administration website to view your earnings record and see an estimate of your future retirement benefit. The site shows your earnings for each year and flags any discrepancies. If you spot an error — a missing year, an employer who did not report your wages — you can contact Social Security to correct it, though you will need documentation like old pay stubs or tax returns.

Your benefit estimate assumes you continue working and earning at your current level until your full retirement age, which ranges from 66 to 67 depending on your birth year. If you plan to retire earlier or later, the estimate will change. You can also see how much your family members might receive if you become disabled or die.

What Happens to Social Security Tax Revenue

All Social Security tax collected goes into the Old-Age and Survivors Insurance Trust Fund and the Disability Insurance Trust Fund. These funds pay benefits to three groups: people age 62 and older who have retired, workers under 65 who are disabled, and family members of workers who have died.

The funds operate on a pay-as-you-go system. Money coming in from current workers' taxes pays benefits to current beneficiaries. In recent years, the funds have been paying out more in benefits than they collect in taxes, which means they have been drawing down reserves built up in earlier decades. The Social Security Administration publishes annual reports on the financial status of both trust funds.

Congress sets the tax rate and wage cap, not the Social Security Administration. If you want to understand debates about Social Security's long-term finances or proposed changes to the tax rate or cap, those discussions happen in Congress, and any changes would require new legislation.

Frequently Asked Questions

Can I opt out of paying Social Security tax?

No. Social Security tax is mandatory for all employees and self-employed people. The only exception is certain government employees hired before 1984 who are covered by their own pension system instead, but they cannot choose to opt out — it depends on when and where they were hired.

What if I work for multiple employers in the same year?

Each employer withholds Social Security tax separately. If your combined earnings exceed the wage cap, you may overpay Social Security tax during the year. When you file your tax return, you can claim a refund for the overpayment. The IRS will calculate this automatically if you file electronically.

Do I pay Social Security tax on tips?

Yes. Tips are considered wages, and you owe Social Security tax on them. If you report tips to your employer, they will withhold the tax. If you do not report tips, you are still legally required to pay the tax when you file your tax return.

Does Social Security tax explore to bonuses and commissions?

Yes, as long as your total earnings have not exceeded the wage cap for the year. Bonuses, commissions, and other forms of compensation are all subject to the 6.2 percent Social Security tax up to the annual limit.

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 toward Social Security benefits. The Social Security Administration website lists which countries have these agreements and how they work.