Overview

The Additional Medicare Tax was legislated as part of the Affordable Care Act, and has been in effect since 2013. Under this mandate, in addition to withholding Medicare tax at 1.45%, employers must withhold a 0.9% Additional Medicare Tax from wages paid to an employee once earnings reach $200,000 in a calendar year. Employers are required to begin withholding Additional Medicare Tax in the pay period in which employee wages reach $200,000 and continue to withhold it each pay period until the end of the calendar year. Additional Medicare Tax is only imposed on the employee. There is no employer share of Additional Medicare Tax. All wages that are subject to Medicare tax are subject to Additional Medicare Tax withholding if paid in excess of the $200,000 withholding threshold.

As a default, the Medicare Employee Addl Tax payroll item is set-up for all employees, regardless of their annual wages. 

We encourage you to revisit this article periodically for any updates and additional details.

Frequently Asked Questions

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