Title 26 › Subtitle Subtitle A— - Income Taxes › Chapter CHAPTER 2A— - UNEARNED INCOME MEDICARE CONTRIBUTION › § 1411
A 3.8% tax must be paid on certain investment income for people and for estates or trusts. For an individual, the tax is 3.8% of the smaller amount of either (1) your “net investment income” for the year, or (2) the part of your modified adjusted gross income that is over a set threshold. For an estate or trust, the tax is 3.8% of the smaller amount of either the undistributed net investment income, or the amount by which the estate’s or trust’s adjusted gross income is over the dollar where the highest individual tax bracket begins that year. Net investment income means income like interest, dividends, annuities, royalties, rents, some business income from passive activities or trading in financial instruments, and certain capital gains, minus the deductions related to that income. The “threshold” is $250,000 for joint filers or surviving spouses, $125,000 for married people filing separately, and $200,000 for everyone else. Modified adjusted gross income is your adjusted gross income plus certain foreign earned income exclusions after related adjustments. The tax does not apply to nonresident aliens or to trusts used only for certain charitable purposes.
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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