Max 401k Contribution 2024 Including Employee Contribution. 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. Those 50 and over can contribute an additional $3,500 for a maximum contribution of.

Those 50 and over can contribute an additional $3,500 for a maximum contribution of. For 2024, the 401(k) annual contribution limit is $23,000, up from $22,500 in 2023.