Challenging a Power of Attorney in Arizona - Pennington Law

Granting a power of attorney (POA) to another person or legal entity in Arizona empowers the designated representative to make decisions on someone else’s (principal) behalf. This can be a vital tool, especially when the principal faces temporary incapacity due to illness, injury, or emergencies. However, there are instances where the appointed representative may misuse their authority. In this article, we’ll explore the grounds for challenging a power of attorney in Arizona, with a focus on how this process applies in Surprise, Sun City West, Buckeye, and Peoria.

Mental Incompetence as a Ground for Challenge:

In Arizona, it’s a fundamental legal requirement that a principal must be mentally competent when drafting estate planning documents, including a POA. This means the principal should be of sound mind and fully aware of their decision when granting a POA. If you suspect that your loved one wasn’t mentally competent when assigning someone power of attorney, or if someone is exploiting their mental incompetence, you may have solid grounds to challenge the validity of the POA in the courts.

Mental incompetence can manifest in various ways, including cognitive impairments, dementia, or mental illness. To challenge a POA on these grounds, it’s essential to gather evidence demonstrating the principal’s incapacity at the time of the POA’s execution. Medical records, witness testimonies, and expert opinions from healthcare professionals can all play a crucial role in supporting your case.

Formalities and Validity of POA:

To be considered valid in Arizona, a POA must adhere to specific formalities:

  • Signatures and Dates: The principal and at least two witnesses must sign the document on a specific date. These signatures should be legible and clearly identifiable. Any inconsistencies or irregularities in the signatures may raise questions about the document’s authenticity.
  • Clear Intent: The language used in the document must explicitly express the intent to create a valid power of attorney. Vague or ambiguous language can lead to disputes over the document’s purpose and authority.
  • Notarization: A notary public must witness the signing and approve the POA. The notary’s role is critical in verifying the identities of the parties involved and ensuring that the document complies with legal requirements.

Failure to strictly follow these formalities may lead the court to deem the POA invalid. It’s crucial to ensure that all these requirements are met to protect the principal’s interests.

When challenging a POA based on formalities, you should consult an attorney experienced in estate planning and probate law. They can help you evaluate the document’s compliance with Arizona’s legal standards and guide you through the necessary legal procedures.

Abuse of Authority:

As fiduciaries, individuals holding POAs are legally obligated to act in the best interests of the principal, prioritizing their well-being and needs. If you have reason to believe that the person with a POA is misusing their authority by embezzling funds, mismanaging assets, or engaging in any form of misconduct, you may be entitled to challenge the POA in court.

To substantiate your claims of abuse of authority, it’s essential to gather evidence of the alleged misconduct. This may include financial records, communication logs, and witness testimonies. Consult with an attorney specializing in elder law to help you navigate the process of challenging a POA based on abuse of authority effectively.

Challenging a Power of Attorney in Surprise, Sun City West, Buckeye, and Peoria, Arizona:

Understanding the legal process of challenging a power of attorney is essential to protecting your loved one’s interests in these Arizona communities. Seek guidance from a qualified attorney with expertise in elder law and estate planning to navigate this complex terrain effectively.

When you’re in Surprise, Sun City West, Buckeye, or Peoria, it’s crucial to work with a local attorney who understands the nuances of Arizona state law. They can provide you with region-specific insights and represent your interests effectively in local courts.


A Power of Attorney is a legal instrument designed to safeguard the principal’s rights and interests. When it’s misused or manipulated, it not only breaches trust but also violates the law. Your vigilance and willingness to take action can make a significant difference. By staying informed about the relevant laws, remaining actively involved, and promptly addressing concerns, you can help ensure that your loved one’s wishes are respected, and their well-being is preserved.

In challenging a power of attorney, remember that the process can be legally intricate and emotionally challenging. Seek professional guidance and support to navigate this journey effectively while protecting the rights and dignity of your loved one.

Andre L. Pennington attributes his passion and success as an Arizona estate planning lawyer and licensed financial professional to one thing: wanting to do what’s right for his Family.