Medicare Tax Calculator
Calculate standard Medicare tax (1.45% W-2 / 2.9% self-employed) and the 0.9% Additional Medicare Tax on high earners with no wage caps.
Medicare Standard & Additional Surtax
Medicare & Surtax Formula
Standard Medicare = Wages × 1.45% (or 2.9% SE) | Additional Medicare = max(0, Wages − Threshold) × 0.9% | Threshold = $200k (Single) / $250k (MFJ)- No Wage Cap: Unlike Social Security, standard Medicare tax applies to 100% of earned income without any upper dollar ceiling.
- Additional Medicare Tax: Established under the ACA, an extra 0.9% tax applies to earned wages exceeding $200,000 for single filers or $250,000 for married couples filing jointly.
Step-by-Step Worked Example
Calculation Steps:
How to Use This Calculator
Assumptions & Limitations
- Employers do not match the 0.9% Additional Medicare tax; it is paid entirely by the employee.
Frequently Asked Questions
Does the employer match the 0.9% Additional Medicare tax?
No. The employer only matches the standard 1.45% rate. The 0.9% Additional Medicare surtax is an employee-only responsibility.
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