Medicare Tax Basics Guide

Introduction

Medicare tax is a federal payroll tax that funds Medicare, the U.S. health insurance program for people aged 65 and older and certain younger individuals with disabilities. Understanding Medicare tax basics helps employers and employees manage payroll and tax compliance correctly.

What Is Medicare Tax?

Medicare tax is a portion of payroll taxes withheld from wages that contributes to the Medicare Trust Fund. It is part of the Federal Insurance Contributions Act (FICA) tax and is separate from Social Security tax.

Who Pays Medicare Tax?

Both employees and employers pay Medicare tax. Employers withhold the tax from employee wages and match that amount under FICA rules, ensuring contributions are made from both sides.

Medicare Tax Rate

The standard Medicare tax rate applies to all taxable wages. There is no wage cap for Medicare tax, meaning it continues to apply as income increases. Higher income earners may also be subject to an additional Medicare tax on wages above certain thresholds.

Employer vs Employee Responsibilities

Employers are responsible for withholding Medicare tax from employees’ wages and matching the contribution. This tax is reported and paid to federal tax authorities with regular payroll tax filings. Employees do not directly pay this tax separately; it is withheld from their earnings.

Additional Medicare Tax

An additional Medicare tax applies to employee wages above specific income thresholds. Employers must withhold this additional amount for eligible employees and ensure compliance with reporting requirements.