2024 401k Max Contribution Irs. In 2024, employers and employees together can. 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.

In 2024, employers and employees together can. The contribution limit for simple 401 (k)s is $16,000 (up to $19,500 if you’re 50 or older).