Maximum Social Security Tax 2024 Withholding Tax. Maximum taxable earnings ( en español) if you are working, there is a limit on the amount of your earnings that is taxed by social security. Up to 50% of your social security benefits are taxable if:
The resulting maximum social security tax for 2024 is $10,453.20. Maximum taxable earnings ( en español) if you are working, there is a limit on the amount of your earnings that is taxed by social security.