What Triggers the Appointment
Naming a guardian in a will or signed writing is only the first step. The appointment does not take effect until one of three events happens.
It starts when the appointing parent or spouse passes away, a court finds them unable to care for themselves, or a doctor says in writing that they can no longer provide care.
The appointment of a guardian pursuant to section 14-5301 is effective on the death of the appointing parent or spouse, the adjudication of incapacity of the appointing parent or spouse or a written determination by a physician who has examined the appointing parent or spouse that the appointing parent or spouse is no longer able to care for the incapacitated person, whichever first occurs.
A.R.S. § 14-5301.01(A)This means the guardian does not step in too early. The appointing person keeps full caregiving authority until one of these events occurs.
Filing Rules and the Thirty-Day Window
Once the appointment takes effect, the named guardian has thirty days to file an acceptance with the court. The filing must include a copy of the will or signed writing.
The guardian must also give written notice to several people. This includes the appointing parent or spouse (if still living), the person who needs care, the current caregiver, and the closest adult relative.
Within thirty days after filing, the guardian must ask the court to confirm the appointment. The court may have already confirmed it under Section 14-5301. If not, the guardian's authority ends if the court appoints someone else or if someone files an objection first.
The powers of a guardian who timely complies with the requirements of subsections B and D of this section give acts by the guardian that are of benefit to the incapacitated person and that occurred on or after the date the appointment became effective the same effect as those that occurred after the filing of the acceptance of appointment.
A.R.S. § 14-5301.01(G)This retroactive rule matters. If a guardian acts in the person's interest between the triggering event and the formal filing, those actions count as legally valid.
The statute also makes clear that the appointment itself does not mean the person lacks capacity. This protects the dignity and legal rights of the person receiving care.