Solo 401k Contribution Limits 2024 Over 50. The big draw of a solo 401(k) is the high contribution limit. Use the solo 401 (k) contribution comparison to estimate the potential contribution that can be made to a solo 401 (k) plan, compared to profit sharing, simple, or sep plan.

For 2024, you can contribute up to $69,000, or $76,500 if you’re 50 or older. The big draw of a solo 401(k) is the high contribution limit.