401k 2024 Contribution Limit 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 announced nov. There's also a $7,500 catch.

The contribution limits for individual retirement accounts (iras) also increases. Contribution limits for a roth 401(k) are the same as for a traditional 401(k).