Medicare tax withheld is the money your employer takes from each paycheck to fund Medicare
When you work, your employer automatically deducts money from your paycheck for Medicare. This is called Medicare tax withholding. The amount is a fixed percentage of your gross wages — the money you earn before any deductions. Your employer sends this money directly to the federal government on your behalf.
Medicare tax funds the hospital insurance (Part A) that covers inpatient hospital stays, skilled nursing care, and hospice. It also helps fund Part B, which covers doctor visits and outpatient services. If you are self-employed, you pay both the employee and employer portions yourself when you file taxes.
Understanding how much is withheld, why it matters, and what happens at tax time can help you plan your finances and catch errors on your pay stub.
Key Takeaways
- Your employer withholds 1.45% of your wages for Medicare tax, and your employer matches that amount.
- If you earn over a certain threshold ($200,000 for single filers, $250,000 for married filing jointly), an additional 0.9% Medicare tax applies to wages above that amount.
- Medicare tax withholding appears on your pay stub as "Medicare" or "Med Tax" and is separate from Social Security withholding.
- You can review your total Medicare taxes withheld on your W-2 form each year, which shows what was sent to the government.
- Self-employed workers pay the full 2.9% Medicare tax (or 3.8% on income above the threshold) when they file their annual tax return.
How much Medicare tax is withheld from your paycheck
The standard Medicare tax rate is 1.45% of your gross wages. This is the employee portion. Your employer also pays 1.45% on your behalf — that is the employer portion — but you do not see that deducted from your check.
If your income exceeds certain thresholds, you pay an additional 0.9% Medicare tax on the amount over the limit. For 2024, the thresholds are $200,000 for single filers, $250,000 for married couples filing jointly, and $125,000 for married couples filing separately. This additional tax appears on your pay stub once you cross the threshold during the year.
The total amount withheld depends on your gross pay. If you earn $3,000 in a pay period, the standard Medicare withholding is $43.50. If you also owe the additional 0.9% tax, that amount is added on top.
Where to find Medicare tax on your pay stub
Your pay stub lists Medicare tax separately from other deductions. Look for a line labeled "Medicare," "Med Tax," "FICA Medicare," or "HI" (Hospital Insurance). The amount shown is what your employer withheld that pay period.
Pay stubs also show a year-to-date total, which tells you how much Medicare tax has been withheld since January 1st. This running total helps you track whether the withholding is correct and whether you have crossed the threshold for the additional 0.9% tax.
If you do not see Medicare tax listed, or if the amount seems wrong, contact your employer's payroll department. Errors can happen, and catching them early makes them easier to fix.
Medicare tax on your W-2 and tax return
At the end of each year, your employer sends you a W-2 form that reports your total wages and all taxes withheld. Box 5 on the W-2 shows total Medicare tax withheld for the year. Box 6 shows Social Security tax withheld separately.
When you file your federal income tax return, the IRS uses the W-2 to verify that the correct amount was withheld. If too much was withheld, you may receive a refund. If too little was withheld — for example, if you crossed the income threshold partway through the year and your employer did not withhold the additional 0.9% — you will owe the difference when you file.
Keep your W-2 in a safe place. You will need it to file your taxes, and you may need it later to verify your earnings record with Social Security.
Self-employed workers and Medicare tax
If you are self-employed, you do not have an employer to withhold Medicare tax. Instead, you pay it yourself when you file your annual tax return using Schedule SE. Self-employed workers pay both the employee and employer portions, for a total of 2.9% on net earnings from self-employment.
If your net self-employment income exceeds the threshold ($200,000 for single filers), you also pay the additional 0.9% Medicare tax on the amount over the limit. The total can be 3.8% on high earnings.
Many self-employed workers make quarterly estimated tax payments to avoid a large bill at tax time. These payments include income tax, Social Security tax, and Medicare tax. A tax professional or the IRS website can help you calculate the correct amount.
Why Medicare tax is withheld
Medicare tax funds the Medicare program, which provides health insurance to people age 65 and older, some younger people with disabilities, and people with end-stage renal disease. Part A covers hospital care, and Part B covers doctor visits and outpatient services. Part D, which covers prescription drugs, is funded differently.
By withholding Medicare tax during your working years, the government collects the money gradually rather than asking for a large lump sum at tax time. This system also ensures that the money is available to pay current Medicare benefits.
When you turn 65, you become may be able to access for Medicare based on your work history and tax contributions. The amount you paid in Medicare tax does not determine your benefit amount — Medicare Part A is largely free for people who worked and paid taxes for at least 10 years — but your contributions help fund the program you will use.
What to do if Medicare tax withholding seems wrong
Review your pay stub each pay period to make sure Medicare tax is being withheld correctly. Compare the percentage (1.45%, or 1.45% plus 0.9% if you are over the threshold) to your gross pay. If the math does not match, contact your employer's payroll department right away.
Common errors include withholding the wrong percentage, failing to withhold the additional 0.9% tax when income crosses the threshold, or withholding from multiple jobs when the threshold is reached. Payroll staff can usually correct these mistakes and adjust future paychecks or issue a corrected W-2 at year-end.
If you discover an error after you have filed your tax return, you can file an amended return (Form 1040-X) to correct it. Keep records of your pay stubs and W-2 forms in case you need to prove the error to the IRS.
Frequently Asked Questions
Can I opt out of Medicare tax withholding?
No. Medicare tax withholding is required by federal law for all employees and self-employed workers. There is no option to skip it or reduce it based on personal choice. The only exception is for certain religious groups that have received a formal exemption from the IRS, which is rare and requires a specific process process.
What happens to Medicare tax if I change jobs?
Medicare tax withholding continues at each job. If you work for two employers in the same year and your combined income exceeds the threshold for the additional 0.9% tax, each employer may not know about your other job and may not withhold the extra tax. You will owe the difference when you file your tax return, or you can adjust your withholding with your employer using Form W-4.
Does Medicare tax withholding count toward my Social Security benefits?
No. Medicare tax and Social Security tax are separate. Medicare tax funds the Medicare program. Social Security tax (6.2% of wages) funds your Social Security retirement, disability, and survivor benefits. Both appear on your pay stub and W-2, but they fund different programs.
Will I get a refund if too much Medicare tax was withheld?
Yes, if your employer withheld more Medicare tax than you owe, the overage will be refunded when you file your tax return. This can happen if you had multiple jobs or if your employer made an error. The IRS will send the refund to you, usually within a few weeks of processing your return.
How do I know if the additional 0.9% Medicare tax applies to me?
The additional 0.9% Medicare tax applies if your wages exceed $200,000 (single), $250,000 (married filing jointly), or $125,000 (married filing separately). If you are close to these thresholds, track your year-to-date earnings and let your employer know when you expect to cross the limit so they can start withholding the extra tax.