Solo 401k Contribution Limits 2024 Over 50. In 2024, you can contribute $23,000 to the roth portion of your solo 401 (k). This is up from $66,000 and $73,500 in 2023.

In 2024, you can contribute $23,000 to the roth portion of your solo 401 (k). This is an increase of $500 from 2023.