What Is The 401k Limit For 2024 Catch-Up. Workers who contribute to a 401 (k), 403 (b), most 457 plans and the federal government’s thrift savings plan can contribute up. Those 50 and older can contribute an additional.

Those 50 and older can contribute an additional $7,500. The contribution limit for employees who participate in 401(k), 403(b), and most 457 plans, as well as the federal government’s thrift savings plan, however, will.