The Internal Revenue Service is providing employers and payroll service providers information that will help them as they prepare to implement the Additional Medicare Tax which goes into effect in 2013.

The Additional Medicare Tax applies to individuals’ wages, other compensation, and self-employment income over certain thresholds; employers are responsible for withholding the tax on wages and other compensation in certain circumstances, IRS says. It has prepared the questions and answers to assist employers and payroll service providers in adapting systems and processes that may be impacted.