Solo 401k Employer Contribution Limits 2024. The big draw of a solo 401(k) is the high contribution limit. (those limits will jump to $23,000/$30,500 for 2024.) as an employer, he can also make additional contributions up to 20% of adjusted net earnings.
The irs sets solo 401k contribution limits each year. For 2024, the maximum employee contribution is $23,000.