How much comes out of your paycheck for Social Security and Medicare

Social Security and Medicare are funded by payroll taxes that come directly out of your paycheck. If you work, you pay 6.2% of your wages toward Social Security and 1.45% toward Medicare. Your employer matches both amounts, so the total going into these programs is double what you see deducted. If you are self-employed, you pay both the employee and employer share, which comes to 12.4% for Social Security and 2.9% for Medicare.

These percentages explore to your wages up to a certain limit. For Social Security, there is a yearly earnings cap — in 2024 it was $168,600, but this amount changes each year. Once you earn above that cap in a given year, Social Security tax stops coming out of your paycheck. Medicare tax, however, has no cap. You pay 1.45% on all your earnings, no matter how much you make. High earners also pay an additional 0.9% Medicare tax on income above $200,000 (or $250,000 if married filing jointly), which started in 2013.

Key Takeaways

  • You pay 6.2% of wages to Social Security and 1.45% to Medicare, with your employer matching both amounts.
  • Social Security tax stops once you reach the yearly earnings cap, but Medicare tax continues on all income.
  • Self-employed workers pay both the employee and employer portions, totaling 12.4% for Social Security and 2.9% for Medicare.
  • High earners pay an extra 0.9% Medicare tax on income above $200,000 (single) or $250,000 (married filing jointly).
  • The Social Security earnings cap changes each year based on wage growth.

Why there is a Social Security earnings cap but not a Medicare cap

Social Security was designed as an insurance program tied to your earnings record. The benefit you receive at retirement is based on what you paid in over your working years, up to a maximum. Because benefits are capped, the tax that funds them is also capped. Once you earn above the yearly limit, additional earnings do not increase your future Social Security benefit, so you do not pay tax on them.

Medicare works differently. It is a health insurance program for people 65 and older, and the benefit does not increase with higher earnings. However, there is no cap on the tax because the program needs funding from all income levels to cover hospital insurance (Part A) and medical insurance (Part B). The additional 0.9% tax on high earners was added in 2013 to help fund the Affordable Care Act and shore up Medicare's finances.

What the earnings cap means for your taxes

If you earn $168,600 or less in a year, you pay Social Security tax on every dollar. If you earn $200,000, you pay Social Security tax only on the first $168,600 (the 2024 cap), and no tax on the remaining $31,400. This can matter if you change jobs mid-year or have multiple employers.

If you work for two employers in the same year and each withholds Social Security tax on your full wages, you may overpay. For example, if you earn $100,000 at one job and $100,000 at another, both employers will withhold Social Security tax on the full amount, even though your combined earnings exceed the cap. You can claim a credit for the overpayment when you file your tax return, but you will not see that money back until then. Self-employed workers should track their earnings carefully to avoid underpaying.

How these taxes appear on your pay stub

Your pay stub shows these deductions separately. You will see a line for "Social Security" or "OASDI" (Old-Age, Survivors, and Disability Insurance) and another for "Medicare" or "HI" (Hospital Insurance). The amount withheld depends on your gross pay for that period. If you are paid biweekly, the calculation is straightforward: multiply your gross pay by the tax rate. Over the course of a year, these small deductions add up.

Some workers may see additional Medicare tax withheld if their employer knows they will exceed the high-earner threshold by year-end. Others may not have it withheld until they file their tax return. The rules around withholding can be complex if you have multiple jobs or variable income, so it is worth reviewing your pay stub each period to make sure the amounts look right.

What happens to the money you pay in

Social Security and Medicare taxes go into separate trust funds managed by the federal government. Social Security taxes fund retirement benefits, survivor benefits (for spouses and children of workers who die), and disability benefits. Medicare taxes fund hospital insurance and are supplemented by general tax revenue to cover medical insurance and prescription drug coverage.

These are not savings accounts in your name. The money you pay in today funds benefits for current retirees and disabled workers. When you retire, your benefits come from taxes paid by workers at that time. This is called a pay-as-you-go system. Your earnings record — the amount you paid in over your working years — determines how much you receive, but the actual money comes from current workers' paychecks.

Checking your earnings record and tax contributions

You can see how much you have paid into Social Security and Medicare by creating an account on ssa.gov and viewing your Social Security Statement. This statement shows your earnings history year by year and estimates what your benefits might be at different retirement ages. It is a good idea to review this every few years to catch any errors in your record.

Your Medicare contributions are tracked separately and do not appear on the Social Security Statement. However, when you turn 65, Medicare will use your earnings record to determine whether you owe a premium for Part B (medical insurance). If you had higher income in the past, you may pay more for Part B coverage. You can view your Medicare records through Medicare.gov after you create an account.

Self-employed workers and quarterly tax payments

If you are self-employed, you do not have an employer to withhold these taxes, so you are responsible for paying them yourself. You pay the combined employee and employer share — 15.3% total (12.4% for Social Security plus 2.9% for Medicare) — on your net self-employment income. You can deduct half of your self-employment tax when calculating your adjusted gross income, which provides some relief.

Self-employed workers usually pay estimated taxes four times a year using Form 1040-ES. These quarterly payments cover income tax, Social Security, and Medicare all together. If you do not pay enough throughout the year, you may owe a penalty when you file your return. Keeping good records of your income and expenses makes it easier to calculate what you owe and avoid surprises at tax time.

Frequently Asked Questions

What is the Social Security earnings cap for this year?

The cap changes each year based on wage growth. In 2024, it was $168,600. For 2025, it is $176,100. You can find the current year's cap on ssa.gov or on your Social Security Statement.

Can I opt out of paying Social Security or Medicare tax?

No. These taxes are mandatory for all workers, including most federal employees and self-employed people. The only exceptions are certain religious groups and some government workers hired before specific dates, and even those exceptions are limited.

If I pay more Social Security tax because I have two jobs, do I get it back?

Yes, but not until you file your tax return. When you file, you can claim a credit for excess Social Security tax withheld. The IRS will refund the overpayment as part of your refund or reduce what you owe.

Do I pay Medicare tax on all my income if I earn over $200,000?

You pay the regular 1.45% Medicare tax on all income with no cap. If you earn over $200,000 (single) or $250,000 (married filing jointly), you also pay an additional 0.9% on the income above those thresholds.

How do I know if my employer is withholding the right amount?

Check your pay stub each period. The Social Security and Medicare amounts should match the percentages (6.2% and 1.45%) applied to your gross pay. If the numbers look wrong or stop appearing after you reach the Social Security cap, contact your payroll department to verify.