A vendor collecting use tax from a purchaser shall keep and preserve suitable records and other books and accounts necessary to determine the tax collected for the statutorily prescribed limitation period. For purposes of this rule, the limitation period is the period of time for which the Department may assess tax, penalties, or interest pursuant to A.R.S. § 42-113. Records, books, and accounts shall be open for inspection at any reasonable time by the Department or its authorized agent.
Ariz. Admin. Code § R15-5-2222