Okla. Admin. Code § 45:20-3-9
In the absence of proof to the contrary, anyone leasing premises to a Retail licensee for a reasonable rental that is based upon sales of alcoholic beverages by the licensee shall not be considered as having a financial interest in the operation of a retail store; PROVIDED, that no such lease shall provide for a rental of more than five (5) percent of the gross alcohol sales, and such lessor shall be limited to one such percentage type lease.
Amended at 35 Ok Reg 827, eff 10-1-18