2024 Max 401k Contribution Limits Catch Up Limit. 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. Workplace retirement plan contribution limits for 2024.

For 2024, the maximum you can contribute to a simple 401(k) is $16,000. Those 50 and older can contribute an additional.