Social Security Tax Limit 2025 Withholding Nothing. In 2025, the maximum amount of earnings on which you must pay social security tax is $168,600. This means that the maximum taxable earning amount is $168,600.

The wage base or earnings limit for the 6.2% social security tax rises every year. The social security administration (ssa) announced that the maximum earnings subject to social security (oasdi) tax will increase from $160,200 to $168,600 in 2025 (an.