Max Roth 401k Contribution 2024. In 2024, the maximum 401(k) contribution limit is $23,000 for people under the age of 50. The contribution limits for 401(k) accounts can vary every year.

For 2024 and 2025, you can contribute an additional $7,500 to traditional and roth 401(k) accounts and $3,500 to a simple 401(k). As kiplinger has reported, if you are younger than 50, the maximum amount you can contribute to a roth 401(k) for 2024 is $23,000.