What is the Income Threshold for Additional Medicare Tax? If you are a high earner, you are subject to the 0.9% additional Medicare tax on earned income in excess of the threshold amount. The threshold amounts are based on your filing status: Single, head of household, or qualifying widow...
Starting with the 2013 tax year, you may be subject to an additional 0.9 percent Medicare tax on wages that exceed a certain threshold. The Additional Medicare Tax is charged separately from, and in addition to, the Medicare taxes you likely pay on most