Can I use my Solo 401k to invest if I go out of business?

Can I use my Solo 401k to invest if I go out of business or close my company?

Answer:

Solo 401k is considered an employer-sponsored plan. It needs a plan sponsor. If the business that adopted the 401k plan is no longer operating, it is possible to amend the plan if you have another business or legitimate self-employment activity. Othersie the 401k plan needs to be terminated. 

Related: 

How do I terminate my Solo 401k plan?