Article / Updated 10-06-2022
As of January 1, 2013, an additional 3.8 percent tax was added to investment income in estates and trusts, thanks to provisions in the Health Care and Education Reconciliation Act of 2010. It's not an additional tax on every dollar, but only on the lesser of undistributed net investment income or any amount of adjusted gross income in excess of the highest tax bracket in any year.