Tennessee Code Title 56. Insurance § 56-32-124

(a) All HMOs doing business in this state shall pay tax on the gross amount of all dollars collected from an enrollee or on an enrollee's behalf in the amount of six percent (6%).

(b) The taxes provided for in this section shall be due and payable in an electronic format approved by the commissioner on a quarterly basis with payments being due and payable on June 1, August 20, December 1 and March 1. Any company failing or refusing to render tax statement information or to pay taxes as specified in this section shall be subject to § 56-4-216.

(c) The amount of taxes collected under this section shall be a single credit against the sum total of the taxes imposed by the Franchise Tax Law, compiled in title 67, chapter 4, part 21, and by the Excise Tax Law, compiled in title 67, chapter 4, part 20.