Roth 401k Contribution Limits 2024 Married. The 2025 maximum contribution to a roth 401 (k) is $23,500. Roth 401(k) contribution limits are the same as traditional 401(k) limits for 2025.

· roth 401(k), roth 403(b), and roth 457 plans: The 2025 maximum contribution to a roth 401 (k) is $23,500.