Medicare Tax Calculator

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Frequently Asked Questions

What is the Medicare tax rate?

The Medicare tax rate is 1.45% for employees and 1.45% for employers, totaling 2.9%. Self-employed individuals pay both halves (2.9%). There is no wage base limit � all earned income is subject to Medicare tax.

What is the Additional Medicare Tax?

The Additional Medicare Tax of 0.9% applies to earned income above $200,000 (single), $250,000 (married filing jointly), or $125,000 (married filing separately). Only the employee pays this additional tax � employers do not match it.

Who pays Medicare tax?

Employees, employers, and self-employed individuals pay Medicare tax. Employees pay 1.45% (plus 0.9% additional if over thresholds), employers pay 1.45%, and self-employed individuals pay 2.9% (plus 0.9% additional if over thresholds).

Is there a cap on Medicare tax?

Unlike Social Security tax (which has a wage base limit of $168,600 in 2024), Medicare tax has no wage cap. All wages, tips, and self-employment income are subject to the 1.45% Medicare tax regardless of amount.

What is the Net Investment Income Tax (NIIT)?

The NIIT is an additional 3.8% tax on the lesser of net investment income or MAGI exceeding $200,000 (single) or $250,000 (MFJ). This applies in addition to the regular Medicare tax and the Additional Medicare Tax on earned income.

How does the Additional Medicare Tax work?

Once your wages exceed $200,000 (single), your employer must begin withholding the additional 0.9% Medicare tax. If combined with your spouse's wages you exceed $250,000, you may need to adjust withholding or make estimated tax payments.

What income is subject to Medicare tax?

Medicare tax applies to wages, salaries, tips, bonuses, commissions, and self-employment income. It does not apply to investment income (capital gains, dividends, interest), retirement account distributions, or Social Security benefits (though these may be subject to NIIT).

How do self-employed individuals pay Medicare tax?

Self-employed individuals pay both the employee and employer portions: 2.9% on all net earnings from self-employment. The Additional Medicare Tax (0.9%) applies to self-employment income above $200,000 (single) or $250,000 (MFJ). Half of the self-employment tax is deductible.

What is the difference between Medicare tax and Medicare premiums?

Medicare tax is a payroll tax paid while working that funds Medicare Part A (hospital insurance). Medicare premiums (Part B and D) are monthly payments for health coverage, adjusted based on income (IRMAA). They are separate from the Medicare tax.

How does IRMAA affect high-income retirees?

Income-Related Monthly Adjustment Amount (IRMAA) increases Medicare Part B and D premiums for higher-income beneficiaries. For 2024, single filers with MAGI over $103,000 and joint filers with MAGI over $206,000 pay higher premiums. This effectively adds an indirect tax on retirement income.

What is the Medicare tax on investment income?

The Net Investment Income Tax (NIIT) of 3.8% applies to investment income (interest, dividends, capital gains, rental income, royalties) for taxpayers with MAGI over $200,000 (single) or $250,000 (MFJ). This is in addition to any capital gains tax owed.

How do I calculate my total Medicare tax?

Total Medicare tax = wages � 1.45% (employee share) + (wages over $200,000) � 0.9% (Additional Medicare Tax) + NIIT on investment income. For self-employed: net earnings � 2.9% + (earnings over $200,000) � 0.9%.

What is the Medicare tax for 2024?

For 2024, the standard Medicare tax rate remains 1.45% for employees and 2.9% for self-employed. The Additional Medicare Tax threshold stays at $200,000 (single). The NIIT threshold is also unchanged at $200,000 (single) / $250,000 (MFJ).

Do employers pay Medicare tax on all wages?

Yes, employers pay 1.45% on all employee wages with no cap. Unlike Social Security tax which stops at the wage base, Medicare tax continues on all wages regardless of amount. Employers do not pay the Additional Medicare Tax.

How is Medicare tax reported on my tax return?

Medicare tax withheld by employers is reported on Form W-2 Box 6. Self-employment Medicare tax is calculated on Schedule SE and reported on Form 1040 Schedule 2. Additional Medicare Tax and NIIT are reported on Form 8959 and Form 8960 respectively.

What is the Medicare tax credit?

There is no direct Medicare tax credit. However, self-employed individuals can deduct half of their self-employment tax (including the Medicare portion) as an adjustment to income on Form 1040 Schedule 1. This reduces AGI but not the actual Medicare tax owed.

Can I be exempt from Medicare tax?

Exemptions from Medicare tax are very limited: 1) Nonresident alien employees with F-1, J-1, M-1, Q-1 visas. 2) State and local government employees covered by a Section 218 Agreement. 3) Students employed by their school. Most employees cannot opt out.

How does Medicare tax work for married couples?

The Additional Medicare Tax threshold for married couples filing jointly is $250,000 combined wages. If one spouse earns $180,000 and the other earns $100,000, neither employer withholds the additional tax (both under $200,000), but you owe 0.9% on $30,000 ($280,000 - $250,000) when filing jointly.

What is the Medicare tax on stock options?

When incentive stock options (ISOs) are exercised and sold, the bargain element may be subject to FICA taxes (including Medicare tax) if the option is disqualified. Non-qualified stock options (NSOs) are subject to Medicare tax at exercise as regular wage income.

How does Medicare tax apply to tips?

Tips are subject to Medicare tax at 1.45% for employees. If total wages including tips exceed the Additional Medicare Tax threshold, the 0.9% additional tax applies. Employers must begin withholding once cash tips reach $200,000 in a year.

Is there a Medicare tax refund?

If your employer over-withholds Medicare tax (e.g., you worked multiple jobs and each withheld based on $200,000), you can claim the excess Additional Medicare Tax as a credit on Form 8959 when filing your tax return. There is no refund for regular Medicare tax.

What happens if I don't pay Medicare tax?

Failure to pay Medicare tax can result in IRS penalties, interest charges, and potential criminal charges for willful evasion. Employers who fail to withhold and pay Medicare tax face significant fines and back-tax liabilities.

How does the Medicare tax differ from Social Security tax?

Medicare tax: 1.45% employee (2.9% self-employed), no wage cap, additional 0.9% over $200K. Social Security tax: 6.2% employee (12.4% self-employed), capped at $168,600 (2024), no additional tax. Both are part of FICA but have different rates and limits.

What is the total FICA tax rate?

Total FICA tax rate is 7.65% for employees (6.2% SS + 1.45% Medicare). For self-employed, it is 15.3% (12.4% SS + 2.9% Medicare). Additional Medicare Tax (0.9%) and NIIT (3.8%) apply above income thresholds.

How do bonuses affect Medicare tax?

Bonuses are subject to Medicare tax at 1.45% (employee) with no cap. If the bonus pushes total wages over $200,000, the Additional Medicare Tax of 0.9% applies to the excess. The entire bonus may also increase MAGI for NIIT purposes.

Is Medicare tax deductible?

Employee-paid Medicare tax is not deductible on your personal tax return. Self-employed individuals can deduct half of their total self-employment tax (including the Medicare portion) as an adjustment to income. Employers deduct Medicare tax as a business expense.

How does Medicare tax work for nonresident aliens?

Nonresident aliens generally do not pay Social Security or Medicare tax on wages if they are in F-1, J-1, M-1, or Q-1 status. However, resident aliens and nonresident aliens in H-1B, L-1, or O-1 status are fully subject to Medicare tax.

What is the Medicare tax on rental income?

Rental income is not subject to regular Medicare tax (which applies only to earned income). However, rental income may be subject to the 3.8% Net Investment Income Tax if your MAGI exceeds the NIIT thresholds ($200,000 single / $250,000 MFJ).

Do I pay Medicare tax on Social Security benefits?

No, Social Security benefits are not subject to Medicare tax. However, if your combined income is high enough, up to 85% of benefits may be subject to federal income tax, and high MAGI can trigger higher Medicare Part B/D premiums (IRMAA).

What is the Medicare surtax for high earners?

The Medicare surtax refers to the Additional Medicare Tax (0.9% on earned income over thresholds) and the Net Investment Income Tax (3.8% on investment income over thresholds). Combined, high earners can pay up to 5.3% in additional Medicare-related taxes.

How does the Medicare tax phaseout work?

Medicare tax does not phase out � it is always 1.45% on all earned income. However, the Additional Medicare Tax begins only above $200,000/$250,000 thresholds and applies to the excess without phaseout. NIIT also starts at the same thresholds without phaseout.