2024 401k Max Limit. For those with a 401(k), 403(b), or 457 plan through an employer, your new maximum contribution limit. The maximum amount you can contribute to a roth 401 (k) for 2024 is $23,000 if you're younger than age 50.

The contribution limit for 401(k)s, 403(b)s, most 457 plans and the federal government’s thrift savings plan is $23,000 for 2024, up from $22,500 in 2023. The maximum amount you can contribute to a roth 401 (k) for 2024 is $23,000 if you’re younger than age 50.