Contribution Limits 2024 Roth 401k. 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. For 2024, the 401 (k) contribution limit for employees is $23,000, or $30,500 if you are age 50 or older.

How to maximize your contributions. Use our calculator to estimate your future balance.