401k 2024 Contribution Limit.  — 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. The agency also boosted the contribution maximums for iras and lifted the limit to $7,000 for 2024, up from $6,500 in 2022.

 — for instance, in 2024, the 401(k) contribution limit is $23,000. On nov., 1, 2023, the irs boosted annual contribution limits for 2024 for 401(k), 403(b), and most 457 plans.