401 K Limits 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. If you are 50 or older, you can defer paying income tax on $30,000 in your 401(k) plan.

 — the 2024 contribution limit for 401(k) plans is $23,000, up from $22,500 in 2023. When pooled together, a worker who is 50 and older can.