2024 Irs 401 K Contribution Limits Catch Up. 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. The total employee contribution limit to all 401 (k) and 403 (b) plans for those under 50 will be going up from $22,500 in 2023 to $23,000 in 2024 (compare that.
For 2024, that limit goes up by $500. 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.