Medicare tax is a fixed percentage of your wages that you and your employer each pay

Medicare tax is 2.9% of your gross wages. You pay half (1.45%) and your employer pays the other half (1.45%). If you are self-employed, you pay both halves — 2.9% total — though you can deduct half of it on your tax return.

This tax funds Medicare Part A, which covers hospital stays, skilled nursing care, and hospice. It is separate from Social Security tax (which is 12.4% combined) and from income tax withholding. Your employer deducts Medicare tax from every paycheck automatically.

There is also an additional Medicare tax of 0.9% that applies only to high earners. This tax kicks in at $200,000 of wages per year for single filers, $250,000 for married couples filing jointly, and $125,000 for married couples filing separately. You pay this extra 0.9% on all wages above that threshold. Your employer does not match this additional tax — you pay it alone.

Key Takeaways

  • Standard Medicare tax is 1.45% from your paycheck and 1.45% from your employer, totaling 2.9% of your wages.
  • Self-employed people pay the full 2.9% themselves, but can deduct half of it as a business expense.
  • An extra 0.9% Medicare tax applies to wages over $200,000 (single), $250,000 (married filing jointly), or $125,000 (married filing separately).
  • Medicare tax is withheld automatically from your paycheck and is separate from income tax and Social Security tax.

How Medicare tax appears on your pay stub

On your pay stub, Medicare tax usually appears as a line item labeled "Medicare" or "Med Tax." It shows the amount withheld from that paycheck. If you earn over the high-income threshold, you will see two separate lines: one for the standard 1.45% and one for the additional 0.9%.

Your employer also reports their half of Medicare tax, but that amount does not appear on your pay stub — it is a separate employer expense. You only see what comes out of your own wages.

Self-employed Medicare tax and the deduction

If you are self-employed or own a business, you pay both the employee and employer portions of Medicare tax: 2.9% total on your net self-employment income. You calculate this on Schedule SE (Self-Employment Tax) when you file your tax return.

The IRS allows you to deduct half of your self-employment Medicare tax (and half of your self-employment Social Security tax) as an adjustment to income. This deduction lowers your taxable income but does not reduce the amount of Medicare tax you owe. You take this deduction on Form 1040 or Form 1040-SR.

When the additional 0.9% Medicare tax applies

The additional 0.9% Medicare tax applies to wages, tips, and other compensation above certain income thresholds. The threshold depends on your filing status: $200,000 for single filers, $250,000 for married couples filing jointly, and $125,000 for married couples filing separately.

If you have multiple jobs or a spouse who also works, your employer withholds the additional tax based only on what they pay you. This can result in under-withholding if your combined household income exceeds the threshold. You may owe additional tax when you file your return, or you may need to adjust your withholding with your employer using Form W-4.

If you are self-employed, you calculate the additional 0.9% Medicare tax on Schedule SE and report it on your tax return. Unlike the standard Medicare tax, there is no employer match for the additional tax — you pay it entirely yourself.

Medicare tax for high earners and multiple jobs

If you earn over the threshold and have more than one job, each employer withholds Medicare tax based only on what they pay you individually. Neither employer knows about your other income. This means you might not have enough withheld during the year, and you will owe the difference when you file your return.

To avoid a large bill at tax time, you can ask one or more employers to withhold extra Medicare tax using Form W-4. Write in the additional amount you want withheld in Step 4(c). Alternatively, you can make estimated tax payments throughout the year if you expect to owe.

Medicare tax for retirees and Social Security recipients

Once you stop working and claim Social Security, you no longer pay Medicare tax on wages because you have no wages. However, you still pay Medicare premiums for Part B (medical insurance) and Part D (prescription drug coverage) if you are enrolled. These premiums are deducted from your Social Security check or paid directly to Medicare.

Medicare Part A (hospital insurance) is free for most people age 65 and older because they paid Medicare tax while working. You do not pay an additional premium for Part A unless you did not pay Medicare tax for at least 40 quarters (10 years) during your working life.

Frequently Asked Questions

Why do I pay Medicare tax if I am young and do not use Medicare yet?

Medicare tax funds the program for current beneficiaries and builds your may be able to access for when you turn 65. You earn Medicare coverage by paying into the system while working. At 65, you become may be able to access for Part A (hospital insurance) without paying a premium, provided you paid Medicare tax for at least 40 quarters during your career.

Can I avoid paying Medicare tax?

No. Medicare tax is mandatory for all wage earners and self-employed people. There are no exemptions based on income, age, or health status. The only way to stop paying is to have no earned income.

What if my employer did not withhold Medicare tax from my paycheck?

Contact your employer immediately and ask them to correct it. Employers are required by law to withhold Medicare tax. If they refuse or go out of business, you may owe the tax yourself when you file your return. The IRS can also pursue the employer for unpaid withholding.

Do independent contractors pay Medicare tax?

Yes. Independent contractors and freelancers pay self-employment tax, which includes both the employee and employer portions of Medicare tax (2.9% total). You calculate this on Schedule SE and pay it when you file your tax return, usually through quarterly estimated tax payments.

How much Medicare tax will I pay over my lifetime?

This depends on your total earnings over your working years. If you earn $50,000 per year for 40 years, you would pay roughly $29,000 in Medicare tax (1.45% of $50,000 × 40 years). Higher earners pay more, and those subject to the additional 0.9% tax pay even more on income above the threshold.