Tenn. Code Ann. § 47-14-119

In any transaction otherwise subject to this chapter which is not subject to the disclosure requirements of the federal Consumer Credit Protection Act, where the transaction bears a reasonable relationship to this state and also to another state or nation, the parties may agree in the written contract evidencing such transaction that the laws of this state or of any other such state or nation shall govern their rights and duties with respect to interest, loan charges, commitment fees, and brokerage commissions.