2024 401k Maximum Deferral. The dollar limitation for catch.  — 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 2024, a $500 increase from the $22,500 limit in 2023.

 — for 2024, the employee contribution limit for 401(k) plans is $23,000, up from $22,500 in 2023.  — 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 2024, a $500 increase from the $22,500 limit in 2023.