401k 2024 Maximum Limits. Workers who contribute to a 401 (k), 403 (b), most 457 plans and the federal government’s thrift savings plan can contribute up to $23,000 in However, if you'll be reaching full retirement age by the end of the year and aren't there yet, that limit is $59,520.

The 401 (k) contribution limit for 2024 is $23,000. That’s an increase from the 2023 limit of $330,000.