AGI

Having a high income may mean you owe two extra taxes: the 3.8% net investment income tax (NIIT) and a 0.9% additional Medicare tax on wage and self-employment income. Let’s take a look at these taxes and what they could mean for you. 1. The NIIT In addition to income tax, this tax applies on your net investment income. The NIIT only affects taxpayers with adjusted gross incomes (AGIs) exceeding $250,000 for joint filers, $200,000 for single taxpayers and heads of household, and $125,000