Solo 401k Employee Contribution Limits 2024 Olympics. The maximum employee contribution limit for a solo 401(k) is $23,000 or 100% of your income in 2024, whichever is less. The contribution limits for a solo 401(k) plan depend on both employee and employer contributions.

The irs maximum contribution to a solo 401k is $66,000 for 2023 (or $73,500 for those over age 50) and $69,000 for 2024 (or $76,500 for those over age 50). The maximum limit went from $66,000 in 2023 to $69,000.