Maximum 401k Contribution With Catch Up 2024. Starting in 2024, employees can contribute up to $23,000 into their 401(k), 403(b), most 457 plans or the thrift savings plan for federal employees, the irs announced nov. Contribution limits for 401(k)s in 2024 and 2025.

Workplace retirement plan contribution limits for 2024. The 2025 maximum 401k contribution limit will be $23,500, which is a an increase of $500 over the 2024 maximum 401k contribution limit of $23,000 (which had increased $500.