How to revoke a power of attorney in Wyoming

What Wyoming law says about revoking a power of attorney, and a free letter you can fill in and print.

Checked against official sources: October 31, 2026.

Short answer

You can revoke a power of attorney or an agent's authority. The Act does not set a required method; the Wyoming Judicial Branch self-help page says to revoke it in writing.

Words used in Wyoming

In Wyoming you name an agent for money and property in a power of attorney, and an agent for medical decisions in a power of attorney for health care. Your written treatment wishes are called individual instructions; both are advance health care directives. If an adult cannot decide and has no documents, family members can act as surrogate, and a district court can appoint a guardian and a conservator.

An agent (also called an attorney-in-fact) is the person you choose to act for you. You are the principal.

Money and property
Power of attorney; 'Statutory Form Power of Attorney'
The person you choose
Agent
Health care
Power of attorney for health care (an 'advance health care directive'); the agent may also be called 'attorney-in-fact'
Treatment wishes
Individual instruction (part of an advance health care directive)
Court-appointed decision-maker
Guardian (care of the person) and conservator (property and finances) of an 'incompetent person'; plenary or limited

What Wyoming law says about revoking a power of attorney

How to revoke

You can revoke a power of attorney or an agent's authority. The Act does not set a required method; the Wyoming Judicial Branch self-help page says to revoke it in writing. Signing a new power of attorney does not revoke an earlier one unless the new one says so.

Telling others

Tell the agent and every bank or business that has a copy. An agent or other person who acts in good faith without actual knowledge that the power of attorney or the agent's authority has ended is protected.

Law: Wyo. Stat. § 3-9-110

Source: Official text

Free letter: revoke a power of attorney

The date on the document you signed. If you are not sure, use your best estimate.

These names go into your letter only. They are never saved or sent to us.

Other formats

Sign the letter and keep a copy. This tool does not check whether your document is valid, and it is not legal advice.

When it ends and how to revoke it

It ends when
  • You die
  • You become incapacitated, if the power of attorney is not durable
  • You revoke it
  • It says it ends, or its purpose is accomplished
  • The agent dies, becomes incapacitated or resigns, or you revoke the agent's authority, and no other agent is named
  • An action is filed for dissolution, annulment or legal separation from an agent who is your spouse
Banks and other businesses

A person asked to accept a notarized (acknowledged) power of attorney must accept it, or within 7 business days ask for an agent's certification or an English translation, and then accept it within 5 business days after receiving it, unless a legal reason to refuse applies (for example, a good-faith belief it is invalid, or a report to a protective agency of suspected abuse or exploitation). A person may not demand a different form. Wrongful refusal can lead to a court order and liability for reasonable attorney's fees and costs. A photocopy or electronically sent copy has the same effect as the original.

Law: Wyo. Stat. §§ 3-9-119, 3-9-120; § 3-9-106(d)

Law: Wyo. Stat. § 3-9-110

Good to know in Wyoming

  • A Wyoming health care power of attorney must be notarized or signed by two witnesses who each sign a declaration under penalty of perjury.

    Law: Wyo. Stat. § 35-22-403(b)

  • You can revoke the naming of a health care agent only by a signed writing.

    Law: Wyo. Stat. § 35-22-404(a)

  • Wyoming guardianship is decided by a preponderance of the evidence, and the petitioner, proposed ward or custodian may demand a jury.

    Law: Wyo. Stat. §§ 3-2-103, 3-2-104

  • Guardians must file reports on the ward every six months.

    Source: Wyoming Judicial Branch adult guardianship page

Free help in Wyoming

Report abuse or exploitation

Wyoming Department of Family Services (reports go to your local DFS office) · 1-800-457-3659

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