401k Contribution Limits 2024 Roth 2024. In 2024, you can contribute $23,000 to the roth portion of your solo 401 (k). In 2024, 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.

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