A.R.S. § 42-19003.01: Computers and equipment; hardware; software; definition

A. Except as provided by subsection C of this section, personal computers and general purpose computers used in a trade or business shall be valued as personal property.

B. Operating system software necessary to enable the operation of personal computers, general purpose computers and peripheral equipment shall be valued as a part of the computer on which it is installed.

C. All other software, other than operating system software, whether it is canned or customized for a specific application by a personal computer or a general purpose computer, shall not be valued as personal property.

D. For the purposes of this section, "operating system software" means the collection of software that directs the computer's low-level operations, controlling and scheduling the execution of application programs and managing the low-level operation of storage, input, output and communication resources.