Higher income investors need to plan for the 3.8% “unearned income Medicare contribution” tax. This 3.8% tax was enacted as part of the 2010 health care overhaul. Some Details The tax applies only to taxpayers with modified adjusted gross income (AGI) above these levels: $200,000 (single/head of household), $250,000 (married filing jointly/surviving spouses), or $125,000 […]