Author: Bruce4Tax(Taxicorn)Taxicorn 24 Feb 2023
Do you mean that the SMSF would buy shares in a related company, or a company that is renting the property?
If you mean that the SMSF would borrow money to buy the shares, then that would be outside the type of borrowing that a SMSF is allowed. A loan to buy shares could only be secured by a LRBA over the shares - security must not be given over other assets.
Also, if any director or member of the company was a part 8 associate, or if SMSF members could exercise control over the company, the shares would be an inhouse asset (IHA). IHA cannot exceed 5% of SMSF assets - at time of purchase and each year afterwards.
https://www.ato.gov.au/super/self-managed-super-funds/in-detail/smsf-resources/smsf-technical/limited-recourse-borrowing-arrangements---questions-and-answers/?page=4
Failure to establish a fair market value for the shares at purchase would create NALI issues as long as the shares were held, as well as other SIS breaches.
You should see a SMSF expert before trying to do anything like this.