Tennessee Code Title 67. Taxes and Licenses § 67-6-353

(a) There is exempt from this chapter any sales and use tax upon adaptive equipment for motor vehicles that is necessary to ensure that the eligible person will be able to operate an automobile or other conveyance in a manner consistent with such person's own safety and the safety of others. This section shall apply only to adaptive equipment for motor vehicles sold, given or donated to a disabled veteran who has been honorably discharged from any of the armed services of the United States and who has a service-connected disability equivalent to the disabilities as prescribed in 38 U.S.C. § 3100 et seq.

(b) There is exempt from this chapter any sales and use tax upon a new or used motor vehicle that is sold, given, or donated to a veteran or active-duty service member of the armed services who has a service-connected disability as described in 38 U.S.C. § 3901 and who receives a grant from the United States department of veterans affairs, pursuant to 38 U.S.C. §§ 3901-3904, that is used to provide or assist in providing the vehicle to the veteran or service member; provided, that the exemption shall only apply to the portion of the price of the vehicle that is in excess of the amount of the grant received.