Roth 401k Contribution Limits 2025 Over 50. In 2025, if your personal contributions, including roth contributions, to your 401 (k) plan are more than $23,000 (or $30,500 if you are 50 or older), your employer must initiate corrective. In 2025, the contribution limit for a roth 401 (k) is $23,000, plus an additional contribution of $7,500 if you are age 50 or older.

Roth 401 (k) contribution limits are the same as the traditional 401 (k) limits of $23,000 in 2025, or $30,500 for those 50 and older. Here’s how the 401 (k) plan limits will change in 2025: