Title 26 › Subtitle Subtitle A— Income Taxes › Chapter 2A— UNEARNED INCOME MEDICARE CONTRIBUTION › § 1411
Imposes a 3.8% tax on certain investment income. For people, you pay 3.8% of the smaller amount of either your net investment income for the year or the amount your modified adjusted gross income is over a set threshold. For estates and trusts, you pay 3.8% of the smaller amount of either undistributed net investment income or the amount the estate’s or trust’s adjusted gross income is over the dollar where the highest individual tax bracket begins. Thresholds are $250,000 for married couples filing jointly or surviving spouses, $125,000 for married people filing separately, and $200,000 for everyone else. Net investment income includes things like interest, dividends, annuities, royalties, rents, certain business income from passive activities or trading in financial instruments or commodities, and gains from selling property not used in an active non‑passive business, minus related deductions. It does not include distributions from retirement plans (sections 401(a), 403(a), 403(b), 408, 408A, 457(b)) or items counted as self‑employment income taxed under self‑employment tax. Modified adjusted gross income means adjusted gross income with a specific adjustment for certain excluded foreign earned income. Nonresident aliens and trusts devoted entirely to certain charitable purposes are not subject to the tax.
Full Legal Text
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 5, 2026
Release point: 119-73not60