Tenn. Code Ann. § 56-29-109

The amount provided as working capital shall only be provided by individuals or groups who have no financial interest in the activities of the hospital service corporations, or by any member hospitals. Interest charged for the capital, if any, shall not exceed six percent (6%), and payment of interest, if any, and repayment of the working capital shall be permitted only after provision has been adequately made for operating expenses, payments to member hospitals and the establishment of legal reserves and other reserves that may be required by the commissioner. The amount of money actually available for working capital shall be sufficient to carry all acquisition costs and operating expenses for a period of at least three (3) months from the date of the issuance of the certificate.