401k Max 2024 After Tax 2024. For the tax year 2024, the maximum amount that an employee can contribute to their 401(k) retirement plan is $23,000. That is $500 more than you were allowed to contribute in 2023.

For those with a 401(k), 403(b), or 457 plan through an employer, your new maximum contribution limit. 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.