Solo 401 K Contribution Limits 2024. Your employee contribution limit is the same as the 401(k) contribution limit for any traditionally employed worker, which is $23,000, or $30,500 if you're 50 or older in 2024. However, your contribution cannot exceed 25% of your gross adjusted.
This is an increase of $500 from 2023. For 2024, the maximum employee contribution is $23,000.