Wash. Admin. Code § 458-20-129
Gasoline Service Stations
Business and Occupation Tax
Retailing. Persons operating gasoline service stations are taxable under the retailing classification upon the gross proceeds of sales of tangible personal property, from services rendered with respect to the cleaning or repair of such property, gross income from towing and gross income from automobile parking and storage. On computing tax there may be deducted from gross proceeds of sales the amount of state and federal gallonage tax on motor vehicle fuel included therein.
Retail Sales Tax
The retail sales tax applies upon the sale of tangible personal property (except vehicle fuel) on which the tax of either chapters 82.36 or 82.38 RCW is paid and upon charges for towing, automobile parking and storage and the sale of services rendered with respect to the cleaning or repairing of tangible personal property.
Thus the tax applies upon the sale of tires, accessories, etc., upon sales of labor and materials in respect to lubricating, greasing, tire changing, etc., and also upon washing, battery charging and repair work. (See also WAC 458-20-126.)
Wash. Admin. Code § 458-20-129
Order ET 73-1, § 458-20-129, filed 11/2/73; Order ET 70-3, § 458-20-129 (Rule 129), filed 5/29/70, effective 7/1/70.