Tenn. Code Ann. § 67-6-230: Prepaid telephone calling cards

Notwithstanding any other law to the contrary, the sale of a prepaid calling service and prepaid wireless calling service shall be subject to the tax levied on the sale of tangible personal property at retail by § 67-6-202 at the time of the sale or recharge of the calling card or authorization code. No additional tax imposed by this chapter shall be due when the telecommunication service is accessed or received by the user of the calling card or authorization code.