Max Roth 401k Contribution 2025 Married. Employers can contribute to a roth 401 (k) by matching employee contributions to a certain percentage or dollar amount. The maximum amount you can contribute to a roth 401(k) for 2025 is $23,000 (if you're younger than age 50).

The contribution limits for 401(k) accounts can vary every year. If you’re age 50 or older, you can make.