2024 Employee 401k Contribution Limits With Catch Up. For those with a 401(k), 403(b), or 457 plan through an employer, your new maximum contribution limit will go up to $23,000 in 2024. The 401(k) contribution limit for 2024 is $23,000.

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,.