Under U.S. law, particularly according to the Uniform Power of Attorney Act (UPOAA) which has been adopted by many states, there are primarily three main ways to revoke Power of Attorney from someone, which will effectively remove them from their previously appointed role.
The first method to revoke Power of Attorney is through verbal communication. For instance, as long as the principal is mentally competent, they can communicate their decision to revoke Power of Attorney by verbal means. However, it’s important to note that this approach might not be legally binding in all jurisdictions.
The second way, and typically more definitive in terms of legal validity, is the written communication method to revoke Power of Attorney. The principal can draft a written document expressing their wish to revoke Power of Attorney and sign it, thereby providing a tangible piece of evidence of their decision.
Lastly, one can use a notary form to revoke Power of Attorney. A revocation document filled out and signed in front of a notary public provides an additional layer of legal validation to the principal's decision to revoke Power of Attorney. This method proves useful especially when the need arises for an official third-party validation of the principal's mental capacity at the time of revocation.