https://www.irs.gov/ko/businesses/small-businesses-self-employed/questions-and-answers-for-the-additional-medicare-tax
Questions and answers for the Additional Medicare Tax | Internal Revenue Service
Find information on the additional Medicare tax. This tax applies to wages, railroad retirement compensation and self-employment income over certain thresholds.
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https://ttlc.intuit.com/community/retirement/discussion/why-does-it-ask-me-to-upgrade-it-says-i-have-additional-medicare-tax-form-8959-but-i-am-not-on/00/3745638
Why does it ask me to upgrade? It says I have "Additional Medicare Tax (Form 8959) but I am not on...
Jan 29, 2026 - I have searched google and asked others and they also have no clue. I don't make over $200k and that is the majority of the response I get.
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https://www.zinnerco.com/employer-obligations-for-the-additional-medicare-tax/
Employer Obligations for the Additional Medicare Tax
Apr 15, 2026 - The IRS has issued final regulations relating to the Additional Medicare Tax on income above threshold amounts, as added by the Affordable Care Act.E
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