Ariz. Rev. Stat. § 14-11014
A. A trustee, other than an interested trustee, or if two or more persons are acting as trustee, a majority of the trustees who are not an interested trustee, in its sole discretion and without the approval of the court may:
3. Change the percentage used to calculate the unitrust amount or the method used to determine the fair market value of the trust, or both, if:
(a) The trustee adopts a written policy for the trust providing either:
(b) The trustee sends written notice of its intention to take this action, along with copies of the written policy and this section, to:
B. If there is no trustee of the trust other than an interested trustee, the interested trustee or, if two or more persons are acting as trustee and are interested trustees, a majority of interested trustees, in its sole discretion and without the approval of the probate court may:
3. Change the percentage used to calculate the unitrust amount or the method used to determine the fair market value of the trust, or both, if:
(a) The trustee adopts a written policy for the trust providing either:
(b) The trustee appoints a disinterested person who, in its sole discretion but acting in a fiduciary capacity, determines for the trustee:
(c) The trustee sends written notice of its intention to take such action, along with copies of the written policy and this section, and the determinations of the disinterested person to:
F. A trustee may act pursuant to subsection A or B of this section with respect to a trust for which both income and principal have been permanently set aside for charitable purposes under the governing instrument and for which a federal estate or gift tax deduction has been taken, provided that:
G. Following the conversion of an income trust to a total return unitrust, the trustee:
H. In administering a total return unitrust, the trustee, in its sole discretion but subject to the provisions of the governing instrument, may determine:
K. This section pertains to the administration of a trust and is available to any trust that is administered in this state under Arizona law or to any trust, regardless of its place of administration, whose governing instrument provides that Arizona law governs matters of construction or administration unless:
N. For the purposes of this section:
4. "Interested trustee" means: