401k Contributions 2024 Catch Up 2024. For 2024, the maximum you can contribute to a simple 401 (k) is $16,000. 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.

Total 401(k) plan contributions by an employee and an employer cannot exceed $69,000 in 2024. Of note, the 2024 pretax limit that applies to elective deferrals to irc section 401 (k), 403 (b) and 457 (b) plans increased from $22,500 to $23,000.