Ariz. Rev. Stat. § 28-5619
A. Suppliers and restricted distributors shall maintain and keep records of motor vehicle fuel or aviation fuel received, acquired, used, sold and delivered in this state by the supplier or restricted distributor, the amount of tax paid as part of the purchase price, invoices, bills of lading and other pertinent records and papers required by the director for the reasonable administration of this article at least until the later of the following:
C. Each distributor and vendor shall maintain and keep for three years the following: