The Medicare payroll tax is a percentage of your wages that you and your employer both pay into the Medicare system

The Medicare payroll tax is a mandatory deduction from your paycheck that funds the Medicare program. You pay 1.45% of your wages, and your employer pays another 1.45%, for a combined total of 2.9%. If you are self-employed, you pay both portions yourself — 2.9% total — though you can deduct half of it on your tax return.

This tax starts the moment you earn wages and continues throughout your working life. Unlike Social Security tax, which has an annual earnings cap, Medicare tax has no upper limit. That means high earners pay Medicare tax on every dollar they make, no matter how much they earn in a year.

The money collected goes directly into the Medicare Hospital Insurance Trust Fund, which pays for Part A benefits — hospital stays, skilled nursing care, hospice, and home health services. Without this tax, Medicare Part A would not exist.

Key Takeaways

  • You pay 1.45% of your wages into Medicare, and your employer pays another 1.45%, with no earnings cap.
  • Self-employed workers pay the full 2.9% themselves but can deduct half on their tax return.
  • High earners pay an additional 0.9% Medicare tax on wages above $200,000 (single) or $250,000 (married filing jointly).
  • The tax funds Medicare Part A only — hospital insurance — not doctor visits or prescription drugs.
  • You cannot opt out of Medicare payroll tax; it is required for all wage earners and self-employed individuals.

How much you pay depends on your income and employment status

For most workers, the math is straightforward: multiply your gross wages by 1.45%. If you earn $50,000 a year, you pay $725 in Medicare tax. Your employer deducts this from your paycheck automatically, so you never see it.

Self-employed workers calculate their Medicare tax on net self-employment income — your business profit after expenses. You pay 2.9% on that amount. When you file your taxes, you report this on Schedule SE and can deduct half of what you paid as a business expense, which lowers your taxable income.

If you earn above certain thresholds, you owe an additional Medicare tax of 0.9%. This applies to wages over $200,000 per year if you file as single, $250,000 if you file as married filing jointly, and $125,000 if you file as married filing separately. Your employer withholds this extra 0.9% automatically if your wages cross the threshold.

The additional Medicare tax for high earners

The additional 0.9% Medicare tax was introduced in 2013 as part of the Affordable Care Act. It applies only to wages above the income thresholds mentioned above, not to your entire income — only the amount over the limit is taxed at the higher rate.

If you are married filing jointly and earn $260,000 combined, only the $10,000 above the $250,000 threshold is subject to the extra 0.9% tax. That means you owe an additional $90 on top of your regular Medicare tax.

Some workers — particularly those with multiple jobs or spouses who both work — may have too much withheld. You can adjust this when you file your tax return and may receive a refund of the overpayment.

What the Medicare payroll tax actually funds

The Medicare payroll tax funds only Medicare Part A, the hospital insurance portion of Medicare. This covers inpatient hospital stays, skilled nursing facility care after a hospital stay, hospice services, and home health services under certain conditions.

It does not fund Part B (doctor visits and outpatient care), Part D (prescription drugs), or Medigap supplemental insurance. Those are funded through different sources: Part B and Part D come from general tax revenue and beneficiary premiums, while Medigap is entirely private insurance.

When you turn 65 and become may be able to access for Medicare, you do not pay an additional tax to use Part A — your lifetime of payroll tax contributions have already funded your may be able to access. However, you will pay separate premiums for Part B and Part D if you choose to enroll.

When you start and stop paying Medicare tax

You begin paying Medicare tax the moment you earn your first paycheck, regardless of age. There is no minimum age requirement. High school students working part-time jobs pay Medicare tax on their earnings.

You continue paying Medicare tax for as long as you work and earn wages or self-employment income. Reaching age 65 and enrolling in Medicare does not stop the tax — if you keep working, you keep paying. Many people work past 65 and pay Medicare tax for decades after becoming may be able to access for benefits.

The only way to stop paying Medicare tax is to stop earning wages or self-employment income. Retirement, disability, or unemployment ends the tax obligation because there is no income to tax.

How to verify your Medicare tax contributions

Your Medicare tax contributions are tracked by Social Security under your Social Security number. You can view your earnings record and the taxes you have paid by creating an account on ssa.gov and accessing your Social Security Statement.

Your annual W-2 form (if you are an employee) or Schedule SE (if you are self-employed) shows exactly how much Medicare tax you paid that year. The W-2 lists it as "Medicare tax withheld" in box 6. Review this against your pay stubs to make sure the amount is correct.

If you notice a discrepancy — for example, your employer withheld too much or too little — you can correct it when you file your tax return. The IRS will reconcile the amount you paid throughout the year with what you actually owed.

Frequently Asked Questions

Can I opt out of paying Medicare payroll tax?

No. Medicare payroll tax is mandatory for all wage earners and self-employed individuals. There are no exemptions based on age, health status, or personal choice. The only way to avoid it is to have no earned income.

Does Medicare payroll tax count toward my Social Security benefits?

No. Medicare tax and Social Security tax are separate. Social Security tax (6.2% for employees) funds your Social Security retirement, disability, and survivor benefits. Medicare tax funds only Part A hospital insurance and does not affect your Social Security benefit amount.

What happens if I work in multiple states?

Medicare tax is federal, so it applies the same way regardless of which state you work in. Your employer withholds it from your paycheck and sends it to the federal government. State income tax, if any, is separate and varies by state.

Do I pay Medicare tax on investment income or rental income?

No. Medicare payroll tax applies only to wages from employment and net self-employment income from a business you own. Investment income, rental income, interest, and dividends are not subject to Medicare payroll tax, though they may be subject to other taxes.

If I paid Medicare tax my whole life, am I may provide Medicare Part A coverage?

Yes. If you or your spouse paid Medicare tax for at least 40 quarters (10 years) during your working life, you are may have access to to Medicare Part A at age 65 with no premium. You do not need to "explore" in the traditional sense — you are automatically enrolled when you turn 65 if you are receiving Social Security.