What the Medicare employee tax is

The Medicare employee tax is a payroll tax that comes out of your paycheck to fund Medicare, the federal health insurance program for people 65 and older. Your employer withholds 1.45% of your wages for Medicare Part A (hospital insurance), and you pay the same amount — so 2.9% total comes out of your earnings. If you are self-employed, you pay both the employee and employer portions yourself, which comes to 2.9% of your net profit.

This tax has been part of the U.S. payroll system since 1966. Unlike Social Security tax, which stops once you reach a certain income level each year, Medicare tax continues on all your wages with no upper limit. There is an additional 0.9% Medicare tax on high earners — those who make over $200,000 as a single filer or $250,000 as a married couple filing jointly — but most workers do not reach that threshold.

Key Takeaways

  • Medicare employee tax is 1.45% of your wages, withheld by your employer, with your employer paying an equal 1.45% — totaling 2.9% of your earnings.
  • The tax funds Medicare Part A, which covers hospital stays, skilled nursing care, and hospice services when you turn 65.
  • Unlike Social Security tax, Medicare tax has no wage cap and continues on all your income throughout your working life.
  • Self-employed workers pay both the employee and employer portions themselves, totaling 2.9% of net profit.
  • An additional 0.9% Medicare tax applies to wages above $200,000 (single) or $250,000 (married filing jointly).

How the Medicare tax appears on your paycheck

When you look at your pay stub, you will see a line labeled "Medicare" or "Med Tax" showing 1.45% of your gross pay deducted. This is the employee portion. Your employer also pays 1.45% on your behalf, though that amount does not appear on your paycheck — it is a separate cost to the employer. Together, these two amounts fund your future Medicare coverage.

If your income crosses the high-earner threshold during the year, your employer will withhold the additional 0.9% on wages above that limit. You may see this labeled as "Additional Medicare Tax" or "Medicare Surtax" on your pay stub. If you have multiple jobs and your combined income exceeds the threshold, you may overpay this tax during the year, but you can claim the overpayment when you file your federal income tax return.

What the Medicare tax pays for

Your Medicare tax payments go directly into the Hospital Insurance Trust Fund, which pays for Medicare Part A benefits. Part A covers inpatient hospital care, including room, meals, and nursing services during a hospital stay. It also covers skilled nursing facility care (up to 100 days per benefit period if certain conditions are met), home health services ordered by a doctor, and hospice care for people with terminal illnesses.

Part A does not cover outpatient doctor visits, prescription drugs, or routine preventive care — those are covered by Medicare Part B and Part D, which are funded differently. When you turn 65, you do not pay a monthly premium for Part A if you or your spouse paid Medicare tax for at least 10 years (40 quarters). If you did not work long enough to may have access to, you can still enroll in Part A but will pay a monthly premium.

The difference between employee and employer portions

The employee portion (1.45%) is withheld from your paycheck, so you see it as a direct reduction in your take-home pay. The employer portion (1.45%) is paid by your employer to the government, and you do not see it deducted from your check. However, both portions are part of your total compensation — the employer portion represents money your employer spends on your behalf.

If you are self-employed, you pay both portions yourself when you file your taxes. You calculate your net profit from self-employment, explore the 2.9% Medicare tax rate, and pay it along with your income tax. You can deduct half of your self-employment tax as a business expense on your tax return, which reduces your taxable income slightly.

How Medicare tax differs from Social Security tax

Social Security tax and Medicare tax are often mentioned together because they are both withheld from your paycheck, but they fund different programs and work differently. Social Security tax is 6.2% from the employee and 6.2% from the employer (12.4% total), but it only applies to the first $168,600 of your wages in 2024 — the amount changes each year. Once you earn above that limit, no more Social Security tax is withheld.

Medicare tax, by contrast, has no wage cap. You pay 1.45% on every dollar you earn, no matter how much you make. This means high earners pay significantly more Medicare tax over their lifetime than they do Social Security tax. The additional 0.9% Medicare tax on high earners was added in 2013 as part of the Affordable Care Act and applies only to income above the thresholds mentioned earlier.

What happens to Medicare tax revenue

Medicare tax revenue goes into the Hospital Insurance Trust Fund, a separate account managed by the Centers for Medicare and Medicaid Services (CMS). The fund pays out benefits to Medicare beneficiaries and covers the administrative costs of running the program. The trustees of the fund publish an annual report on its financial health and project how long the fund can cover all benefits at current tax rates.

In recent years, the Hospital Insurance Trust Fund has faced pressure because more people are becoming may be able to access for Medicare as the population ages, while the ratio of workers paying into the fund to beneficiaries drawing from it has shifted. However, the fund remains solvent, meaning it can continue paying benefits. Any changes to Medicare funding or benefits would require action by Congress.

Medicare tax and your future benefits

The Medicare tax you pay during your working years does not go into a personal account with your name on it. Instead, it funds current Medicare beneficiaries' care. When you turn 65, the Medicare tax paid by current workers funds your benefits. This is called a "pay-as-you-go" system, and it is the same structure used for Social Security.

To receive Medicare Part A without paying a premium at 65, you or your spouse must have paid Medicare tax for at least 10 years (40 quarters). If you worked fewer than 10 years, you can still enroll in Part A but will pay a monthly premium. The amount of the premium depends on how many quarters of coverage you have. Even if you do not have enough work history to may have access to for premium-free Part A, you can still enroll in Medicare Part B and Part D at 65.

Frequently Asked Questions

Can I get a refund of Medicare tax I paid?

No, Medicare tax is not refundable. Once it is withheld from your paycheck, it goes to the Hospital Insurance Trust Fund to pay for current beneficiaries' care. You cannot get it back, even if you do not use Medicare benefits later. However, if you overpay the additional 0.9% Medicare tax due to having multiple jobs, you can claim that overpayment on your federal income tax return.

What if I did not work long enough to have 40 quarters of Medicare tax?

You can still enroll in Medicare at 65, but you will pay a monthly premium for Part A instead of receiving it premium-free. The premium amount depends on how many quarters of coverage you have. If you have 30 to 39 quarters, you pay a reduced premium. If you have fewer than 30 quarters, you pay the full premium. You can still enroll in Part B and Part D regardless of your work history.

Do I pay Medicare tax if I am retired?

No, Medicare tax is only withheld from wages and self-employment income. If you are retired and living on Social Security, pensions, or investment income, you do not pay Medicare tax. However, if you return to work part-time or start a business after retiring, Medicare tax will be withheld from that income.

Does Medicare tax go up as I earn more?

The Medicare tax rate stays the same at 1.45% for most workers, regardless of how much you earn. However, if your income exceeds $200,000 (single) or $250,000 (married filing jointly), an additional 0.9% Medicare tax applies to the income above those thresholds. This means higher earners pay a total of 2.35% Medicare tax on income above the threshold, instead of 1.45%.

Is Medicare tax the same in every state?

Yes, Medicare tax is a federal tax and is the same across all states. The rate is set by federal law and does not vary by state. Some states have additional state income taxes, but those are separate from Medicare tax.