401k Contribution 2024 Catch Up Over 50. 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. Adults 50 and older can contribute an additional $7,500 to their 401 (k) plans in 2024.
$69,000 if you’re under 50 $76,500 if you’re 50 or older Those 50 and older can contribute an additional $7,500.