Medicare tax withholding is money taken from your paycheck to fund the Medicare program

Medicare tax withholding is a percentage of your wages that your employer removes and sends to the federal government. This money funds Medicare Part A (hospital insurance) and Part B (medical insurance). The amount withheld is automatic — you do not choose whether it happens, but you can see it listed on your pay stub as "Medicare tax" or "HI tax" (HI stands for Hospital Insurance).

The current rate is 1.45% of your gross wages. If you earn $50,000 a year, approximately $725 goes to Medicare tax withholding. Your employer also contributes a matching 1.45%, but that comes from the employer's side and does not reduce your paycheck.

There is also an Additional Medicare Tax of 0.9% that applies to wages above a certain threshold. For 2024, that threshold is $200,000 for single filers and $250,000 for married couples filing jointly. Once your wages cross that line, the extra 0.9% is withheld on all income above the threshold. Unlike the standard 1.45%, the employer does not match the Additional Medicare Tax.

Key Takeaways

  • Medicare tax withholding of 1.45% is taken from your paycheck automatically and appears on your pay stub.
  • Your employer matches this 1.45% contribution, but that money does not come from your wages.
  • An Additional Medicare Tax of 0.9% applies to wages over $200,000 (single) or $250,000 (married filing jointly) and is not matched by employers.
  • Self-employed people pay both the employee and employer portions (2.9% total, plus 0.9% additional if income is high enough).
  • Medicare tax withholding is separate from income tax withholding and continues throughout your working years.

How withholding appears on your pay stub

Your pay stub shows Medicare tax as a line item under deductions. It may be labeled "Medicare," "HI," or "FICA Medicare." The amount is calculated on your gross pay before other deductions are taken. If you earn $2,000 in a pay period, the Medicare tax withheld is $29 (1.45% of $2,000).

You will see this withholding on every paycheck for as long as you work, regardless of your age. There is no cap on Medicare tax — unlike Social Security tax, which stops once you reach a certain income level in a given year, Medicare tax continues on all wages you earn.

Self-employed workers and Medicare tax

If you are self-employed, you pay both the employee and employer portions of Medicare tax yourself. This means you pay 2.9% total (1.45% + 1.45%) on your net self-employment income. You also owe the Additional Medicare Tax of 0.9% if your income exceeds the thresholds mentioned above.

Self-employed people calculate and pay Medicare tax when they file their annual tax return using Schedule SE (Self-Employment Tax). You can deduct half of your self-employment tax as an adjustment to income on your tax return, which provides some offset to the higher burden.

Medicare tax withholding after you turn 65

Medicare tax withholding does not stop when you turn 65 or when you become may be able to access for Medicare. If you continue working, your employer continues to withhold 1.45% (plus the Additional Medicare Tax if applicable) from your paycheck. This is true even if you are already enrolled in Medicare.

The money withheld goes toward Medicare Part A and Part B funding, which supports the entire program. Your continued withholding does not increase your Medicare benefits — your benefits are based on your lifetime earnings record, which was already established.

The difference between Medicare tax and Medicare premiums

Medicare tax withholding and Medicare premiums are two separate things. Withholding happens during your working years and funds the program. Premiums are what you pay once you are enrolled in Medicare, usually taken from your Social Security check or paid directly to Medicare.

Part B premiums in 2024 range from $174.70 to $609.00 per month depending on your income. Part D (prescription drug) premiums vary by plan. These premiums are not the same as the Medicare tax you paid while working — they are ongoing costs of being enrolled in the program.

What happens to the money you pay in Medicare tax

Medicare tax withholding goes into the Medicare Hospital Insurance Trust Fund (Part A) and the Supplementary Medical Insurance Trust Fund (Part B). These funds pay for hospital stays, doctor visits, and other covered services for all Medicare beneficiaries, not just those who paid in recently.

Medicare is a pay-as-you-go system. The taxes paid by current workers fund benefits for current retirees. When you retire and enroll in Medicare, your benefits are paid from the taxes of people still working. This is why the program depends on a steady stream of workers contributing throughout their careers.

Checking your Medicare tax withholding record

You can view your lifetime Medicare tax contributions by creating an account on ssa.gov (Social Security Administration website) and viewing your Social Security Statement. This statement shows your earnings history and the Medicare and Social Security taxes withheld each year.

Review this record every few years to make sure it is accurate. If you spot an error — such as wages that were not reported or withholding that was not recorded — contact Social Security to correct it. Errors in your earnings record can affect your Medicare may be able to access and the benefits you receive later.

Frequently Asked Questions

Can I opt out of Medicare tax withholding?

No. Medicare tax withholding is mandatory for all employees and self-employed people. There is no exemption based on age, income, or religious belief. The withholding continues as long as you are earning wages or self-employment income.

Does Medicare tax withholding count toward my Medicare benefits?

Medicare Part A may be able to access is based on your work history, not on the amount you paid in taxes. If you worked and paid Medicare taxes for at least 10 years (40 quarters), you are may have access to to Part A at no premium when you turn 65. The actual amount you paid does not determine your benefit level.

What if I worked in multiple states — do I pay Medicare tax in each one?

Yes. Medicare tax is withheld on all wages you earn, regardless of which state you worked in. Your lifetime earnings record combines all your work history across states. When you explore for Medicare, Social Security uses your complete earnings record to determine your may be able to access.

Do I get a refund if too much Medicare tax was withheld?

You do not get a refund of Medicare tax. Unlike income tax, which can result in a refund if too much was withheld, Medicare tax is not refundable. The amount withheld is final and goes to the Medicare trust funds.

Does Medicare tax withholding explore to all types of income?

Medicare tax applies to wages and self-employment income. It does not explore to investment income, rental income, or other passive income sources. Only earned income from work is subject to Medicare tax withholding.