The Net Investment Income Tax for high earners
High-income investors face an additional tax on dividend income. The Net Investment Income Tax adds 3.8% to your effective tax rate on dividends and capital gains if your modified adjusted gross income exceeds $200,000 (single filers) or $250,000 (married filing jointly).
This surtax applies to both qualified and ordinary dividends, meaning a high earner in the top bracket could pay up to 23.8% on qualified dividends (20% + 3.8%) or as much as 40.8% on ordinary dividends (37% + 3.8%).
Even with this additional tax, qualified dividends still receive significantly preferential treatment compared to regular income -- an important consideration when building a tax-efficient portfolio.