what is the additional Medicare tax

Example 3: John is income as a landscaper. John has the following information a single taxpayer. In 2017 John is employed as a maintenance worker and also has self-employed Wages as a maintenance worker S 90,000 Medicare WH: @ 1.45% Excess@.9% 1,305 Schedule C Net Income as a landscaper 160,000. John will pay the self-employment tax on his Schedule C net income (See handout on Self-employment tax). John's 2017 Additional Med