2024 Additional Medicare Tax Limit 2024. Those age 55 and older can make an additional $1,000 catch. There is an additional 0.9% surtax on top of the standard 1.45% medicare tax for those who earn over $200,000 (single filers), $250,000 (joint filers) or $125,000.

In 2024, the medicare tax rate for employers and employees is 1.45% of all wages, unchanged from 2023. There is no limit on the amount of earnings subject to medicare (hospital insurance) tax.