What Is The Additional Medicare Tax For 2024 In Usa. As of 2024, the additional medicare tax rate is 0.9%. In 2024, the medicare tax rate is 1.45% for an employee and 1.45% for an employer, for a total of 2.9%.
The additional medicare tax applies to those with high incomes. Earned income above a certain threshold is subject to the 0.9% surtax, while investment income can be taxed at an additional 3.8%, depending on the filer’s modified adjusted.