Roth 401 K Income Limits 2024 Married. The maximum amount you can contribute to a roth 401(k) for 2024 is $23,000 if you're younger than age 50. 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 2023, the roth 401 (k) contribution limit is $22,500. If you are 50 or older, you can contribute an additional $7,500.