Tennessee Code Title 67. Taxes and Licenses § 67-3-1304

(a) For the purpose of determining the amount of tax imposed by part 2 of this chapter, each limited user shall file with the commissioner, on a form prescribed by the commissioner, an annual return which shall include the total number of gallons of dyed and the total number of gallons of undyed fuel used by the limited user within the state during the preceding calendar year. Annual returns and remittances thereon shall be filed not later than March 31 following the close of the preceding calendar year. Returns shall be executed under a declaration of penalty of perjury and shall be filed each year whether or not any dyed or undyed fuel was used in the preceding calendar year.

(b) A limited user who uses undyed fuel in any diesel-powered highway vehicle shall report each piece of equipment in which it is consumed. Under no circumstances may a limited user use dyed diesel fuel in a diesel-powered highway vehicle. Odometer readings of equipment at both the beginning and the end of the month shall be furnished, together with other information as required by the commissioner. The limited user shall keep the odometers on all highway vehicles in good working order at all times. The limited user need not provide odometer readings if excused by the commissioner for good cause shown.