A.R.S. § 12-312: Fees for intervenors and new parties

A. A person intervening in a civil action in the superior court shall pay the same fees required to be paid by a plaintiff.

B. A person brought in as a party plaintiff or defendant by either party to an action or by order of the court shall pay the fee of a plaintiff or a defendant, as the case may be, as provided in section 12-284.