Title 26 › Subtitle Subtitle A— Income Taxes › Chapter 2A— UNEARNED INCOME MEDICARE CONTRIBUTION › § 1411
A 3.8 percent tax applies to your net investment income, on top of regular income tax, once your modified adjusted gross income passes a threshold: $250,000 for joint filers and surviving spouses, $200,000 for most others, and half the joint amount for married people filing separately. You pay 3.8 percent of your investment income or of the amount you are over the threshold, whichever is smaller. Estates and trusts pay it too, on undistributed investment income above the dollar level where their top tax bracket starts. Investment income means interest, dividends, annuities, royalties, rents, gains from selling property, and income from passive businesses or from trading financial instruments or commodities. It does not include income from an active business you run, distributions from retirement plans like 401(k)s and IRAs, or earnings already hit by self-employment tax. Nonresident aliens and charitable trusts are exempt.
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Internal Revenue Code — Source: USLM XML via OLRC
Legislative History
Reference
Citation
26 U.S.C. § 1411
Title 26 — Internal Revenue Code
Last Updated
Apr 6, 2026
Release point: 119-73