Some taxpayers may be liable for an Additional Medicare Tax if your income exceeds certain limits.
Here are six things that you should know about this tax:
- Tax Rate. The Additional Medicare Tax rate is 0.9 percent.
- Income Subject to Tax. The tax applies to the amount of certain income that is more than a threshold amount. The types of income include your Medicare wages, self-employment income and railroad retirement (RRTA) compensation. You must combine your wages and self-employment income to figure the tax. You do not consider a loss from self-employment purposes of this tax. You compare RRTA compensation separately to the threshold. See the instructions for Form 8959, Additional Medicare Tax, for more on these rules.
- Threshold Amount. You base your threshold amount on your filing status. If you are married and file a joint return, you must combine your spouse’s wages, compensation, or self-employment income with yours. Use the combined total to determine if your income exceeds your threshold. The threshold amounts are:
Filing StatusThreshold AmountMarried filing jointly$250,000Married filing separately$125,000Single$200,000Head of household$200,000Qualifying widow(er) with dependent child$200,000
- Withholding / Estimated Tax. Employers must withhold this tax from your wages or compensation when they pay you more than $200,000 in a calendar year. If you are self-employed you should include this tax when you figure your estimated tax liability.
- Underpayment of Estimated Tax. If you had too little tax withheld, or did not pay enough estimated tax, you may owe an estimated tax penalty. For more on this topic, see Publication 505, Tax Withholding and Estimated Tax.
Additional Medicare Tax withheld by your employer on Form 8959. Visit IRS.gov for more on this topic. You can also get forms and publications on IRS.gov/forms anytime.
Additional IRS Resources:
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