Oasdi Tax 2025 Limit. For 2025, the social security tax limit is $176,100. This means that employees will contribute a maximum of $10,918.20 to social security, while self.
2025 social security tax limit increase. The $176,100 earnings base for 2025, which applies only to the 6.2% oasdi portion of the social security tax, could result in a fica tax increase of as much as $465.00.