2025 401k Contribution Limits 2025 Catch Up 2025. Starting in 2025, 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. Of note, the 2025 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.
401(k) (other than a simple 401(k)). For 2025, the maximum you can contribute to a simple 401 (k) is $16,000.