Arizona Power of Attorney Laws: Durable, Medical, and Financial POA (2026)
Arizona Power of Attorney Laws: Durable, Medical, and Financial POA (2026)
Arizona operates under its own power of attorney statutes rather than the Uniform Power of Attorney Act (UPOAA) adopted by many other states. The core financial power of attorney statute is A.R.S. 14-5501. Under Arizona law, a power of attorney is durable only if the document expressly states that it survives the principal's disability or incapacity. Execution is distinctive: a valid Arizona financial POA requires the principal's signature, the attestation of one adult witness, AND notarization, with the witness and the notary public being different individuals, and neither may be the named agent. Health care decision authority requires a completely separate document governed by A.R.S. 36-3221 et seq..
What a Power of Attorney Does in Arizona
A power of attorney is a written instrument in which a principal designates another person, the agent, to act on the principal's behalf. The scope of authority depends entirely on what the document grants. A broad general POA may authorize the agent to manage bank accounts, pay bills, buy or sell real property, file tax returns, and handle virtually any financial or legal matter. A limited POA may authorize only a single transaction, such as closing a real estate sale.
Under A.R.S. 14-5502, acts performed by an agent under a durable power of attorney during any period of the principal's disability or incapacity have the same legal effect as if the principal had the capacity to act. Those acts bind the principal and the principal's successors in interest. This provision gives the durable POA its practical value: the agent can step in precisely when the principal cannot act for themselves.
A power of attorney ends at the principal's death regardless of whether the document is durable. After death, authority passes to the personal representative of the estate. The agent has no further power to act once the principal has died.
Durable Power of Attorney in Arizona
Arizona law defines a durable power of attorney in A.R.S. 14-5501(A) as a written instrument that designates an agent and contains language demonstrating the principal's intent that authority may be exercised if the principal is subsequently a person with a disability or incapacitated, or regardless of how much time has passed unless the document states a definite termination time.
Durability is not the default in Arizona. The document must affirmatively state it. A.R.S. 14-5501(B) provides two acceptable formulations: "This power of attorney is not affected by subsequent disability or incapacity of the principal or lapse of time," or "This power of attorney is effective on the disability or incapacity of the principal." The first form creates an immediately effective durable POA. The second creates what is sometimes called a springing POA, one that takes effect only upon incapacity.
A POA that does not contain durability language is non-durable. It terminates automatically if the principal becomes incapacitated, which is often precisely when the agent's help is most needed. For estate planning purposes, most principals want a durable POA.
Arizona also recognizes powers of attorney validly executed in other U.S. jurisdictions. Under A.R.S. 14-5501(C), a POA created in another state is valid in Arizona if it was valid where it was made.
How to Create a Valid Arizona Power of Attorney
A.R.S. 14-5501(D) sets out the execution requirements for a financial power of attorney. A valid Arizona POA must meet all three of the following requirements:
1. Signed by the principal. The principal must sign the document, or another person may sign at the principal's direction and in the principal's presence if the principal is physically unable to sign.
2. Witnessed by one adult. One adult witness must sign the document. The witness may not be the agent, the agent's spouse, or the agent's children. The witness also may not be the notary public who acknowledges the instrument.
3. Acknowledged before a notary public. A notary public must acknowledge the principal's signature. The statute prescribes a specific certificate form for this acknowledgment. The notary and the witness must be different people.
These three requirements all apply together. Arizona's one-witness requirement distinguishes it from states like Florida, which require two witnesses. Arizona also requires notarization in addition to the single witness, making the overall formality comparable to many UPOAA states.
A.R.S. 14-5501(F) adds a restriction on who may serve as agent: a person whose fiduciary license has been suspended or revoked under A.R.S. 14-5651 may not act as agent in any capacity, unless they are related to the principal by blood, adoption, or marriage and their license has been reinstated in good standing.
What an Arizona Agent Can and Cannot Do
The scope of an agent's authority is defined by the POA document itself. Arizona law does not enumerate a statutory default list of granted powers the way UPOAA states do; each document must specify what the agent is authorized to do.
Under A.R.S. 14-5503, if a court appoints a conservator or other fiduciary for the principal after a durable POA has been executed, the agent becomes accountable to that court-appointed fiduciary as well as to the principal. The court-appointed fiduciary has the same power to revoke or amend the POA that the principal would have if not incapacitated. Court oversight can therefore limit or end the agent's authority even when the POA is durable.
An agent generally may not make gifts to themselves or others unless the POA document expressly authorizes it. Agents must act in the principal's best interest, avoid self-dealing, and keep records of all transactions. Because Arizona does not follow the UPOAA, there is no statutory list of sensitive powers requiring specific separate authorization as in many other states. Principals and their attorneys should draft POA documents that clearly specify any sensitive powers such as gift-making, trust creation, or beneficiary changes.
Under A.R.S. 14-5504, if an agent acts in good faith without actual knowledge that the principal has died (for a durable POA) or without knowledge that the principal has become disabled (for a non-durable POA), those actions remain binding on the principal's successors.
Health Care Power of Attorney in Arizona
Financial and health care authority are governed by entirely separate statutes in Arizona. A financial POA under A.R.S. 14-5501 does not authorize an agent to make health care decisions. To grant medical decision-making authority, the principal must execute a separate health care power of attorney under A.R.S. 36-3221 et seq..
Under A.R.S. 36-3221, a health care POA must contain language that clearly indicates the principal intends to create a health care power of attorney, and it must be dated and signed by the principal. The document must be either notarized or signed by at least one adult witness who confirms they were present at execution and that the principal appeared to be of sound mind and free from duress.
Witness restrictions apply. The witness or notary may not be the designated health care agent. A witness who is not a notary must be unrelated to the principal by blood, marriage, or adoption, and may not be entitled to any portion of the principal's estate. A health care provider serving the principal at the time of execution may not serve as witness or notary.
The health care agent's authority covers the full range of medical decisions, including giving or refusing consent to medical, surgical, hospital, and related health care. The sample statutory form in A.R.S. 36-3224 also addresses authority over autopsy decisions, organ donation, and funeral and burial arrangements.
A health care agent's authority becomes effective when the principal is unable to make or communicate their own health care choices. The principal may revoke the health care POA at any time, and the agent's authority may also be ended by court order under A.R.S. 36-3206.
Arizona also recognizes a distinct mental health care power of attorney under A.R.S. 36-3281 et seq.. This document allows a principal to designate an agent specifically for mental health treatment decisions if the principal becomes incapable of giving informed consent. That determination must be made by a physician specializing in neurology or psychiatry, or by a licensed psychologist. If no mental health care POA exists, a general health care agent may make certain mental health decisions subject to the limitations in A.R.S. 36-3283(F).
Principals who want comprehensive advance planning coverage in Arizona typically need two documents: a durable financial POA under A.R.S. 14-5501 and a health care POA under A.R.S. 36-3221. A mental health care POA under A.R.S. 36-3281 is an optional third instrument for those with specific mental health planning needs.
Revoking or Ending an Arizona Power of Attorney
A principal may revoke a power of attorney at any time while competent. Arizona law does not require a specific form for revocation. A signed, written statement expressing the intent to revoke is effective. To protect against third parties who have been dealing with the agent, the principal should notify both the agent and any relevant third parties of the revocation in writing.
A durable financial POA terminates automatically upon the principal's death. It also ends if the principal's stated termination date or event occurs, if a court terminates the agent's authority under A.R.S. 14-5503, or if the document itself provides for termination upon a specific event.
Under A.R.S. 14-5504, an agent who acts in good faith without actual knowledge that the principal has died (durable POA) or that the principal has become disabled (non-durable POA) remains protected, and those actions bind the principal's estate. Under A.R.S. 14-5505, an agent's affidavit stating lack of actual knowledge of revocation or of the principal's death creates a rebuttable presumption that the power remained in effect at the time of the action. This protection encourages third parties to rely on a POA that appears valid on its face.
For a broader overview of how powers of attorney work across all states, see our national Power of Attorney guide.
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This page provides general legal information about Arizona power of attorney laws and is not legal advice. Arizona estate planning involves individual circumstances that an attorney licensed in Arizona can assess. Consult a qualified Arizona attorney before executing or relying on a power of attorney document.
Last reviewed: May 2026. Governing statutes: A.R.S. 14-5501 et seq. (durable financial power of attorney); A.R.S. 36-3221 et seq. (health care power of attorney); A.R.S. 36-3281 et seq. (mental health care power of attorney).