Additional Medicare Tax 2025 Wage Base. 2% social security tax on the first $168,600 of wages (6.2% x $168,600 makes the maximum tax $10,453.20),. All covered wages are subject to medicare tax.
Unlike the additional medicare tax, there is no base limit on wage, so all wages are subject to. 2% social security tax on the first $168,600 of wages (6.2% x $168,600 makes the maximum tax $10,453.20),.