Medicare Tax Rate 2025. It’s a mandatory payroll tax applied to earned. On top of that, she would also increase the rate on two parallel medicare surtaxes to 5 percent from 3.8 percent for americans making more than $400,000 and expand the.

Irmaa tiers and marginal tax rates are based on your magi, which includes all types of income, including investment income. 2.35% medicare tax (regular 1.45% medicare tax + 0.9% additional medicare tax) on all employee wages in excess.