Anthony Y. Kimura

Additional Medicare Tax Withholding 2025. The medicare tax is an additional 0.9% in tax an individual or couple must pay on income thresholds above $200,000 for singles and $250,000 for couples. The additional medicare tax 2025 rate is 0.9%.

In 2025, the medicare tax rate is 1.45% for an employee and 1.45% for an employer, for a total of 2.9%. If you anticipate that you will owe additional medicare tax for 2025 but won’t satisfy the liability through withholding, you may need to make estimated tax payments.