1. The top tax rate on ordinary income (including short-term capital gains) increases from 35% to 39.6% for single filers with taxable income above $400,000 and joint filers above $450,000.
2. The maximum tax rate on long-term capital gains increases from 15% to 20% for investors in the top income tax bracket.
3. A 3.8% surtax applies to the lesser of “net investment income” (NII) or the amount by which your modified adjusted gross income (MAGI) exceeds $200,000 for single filers and $250,000 for joint filers.