Arizona Revised Statutes Title 42. Taxation § 42-1119. Denial of refund

A. If the department disallows any claim for refund, it shall notify the taxpayer accordingly. The department's action on the claim is final unless the taxpayer appeals to the department in writing within the time and in the manner prescribed by § 42-1251. If the department disallows interest on any claim for refund, it shall notify the taxpayer accordingly and thereafter the claim shall be treated as a claim for refund.

B. If the department fails to mail or electronically send notice of action on any claim for refund of tax or interest within six months after the claim is filed, the taxpayer, before the department's mailing or electronic notice of action on the refund claim, may consider the claim disallowed. The taxpayer may appeal to the department for a hearing pursuant to § 42-1251.