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September 9, 2026 · Morgan Welker

Can a Power of Attorney Be Challenged or Contested?

Yes — and knowing the grounds helps you either protect a valid document or raise a real concern about a bad one.

A Power of Attorney is powerful, so the law allows it to be challenged when something isn’t right. Whether you’re defending a valid document or worried about one that’s being misused, it helps to know the grounds.

Common grounds for a challenge

  • Lack of capacity. The principal must have understood what they were signing at the time. If they were already too impaired, the document can be attacked as invalid.
  • Undue influence or coercion. If someone pressured or manipulated the principal into signing — or into naming a particular agent — that can void it.
  • Fraud or forgery. A signature that was faked, or a document the principal was tricked into signing, is not valid.
  • Improper execution. If the signing skipped a required notary or witnesses, the document may fail. See does a Power of Attorney need witnesses.
  • Agent misconduct. Even a valid document can be challenged by asking a court to remove an agent who is abusing their authority or self-dealing.

Who can raise it

Typically an interested party — the principal (if able), family members, a successor agent, or sometimes a financial institution or adult protective services — can raise concerns. Where an agent is being removed for misconduct, a court gets involved.

What this means for you as an agent

The best protection against a challenge is doing the role right: act only in the principal’s interest, stay inside the document, keep the money separate, and keep records of everything. Clean records answer almost every question before it becomes a dispute. See recordkeeping for a Power of Attorney.

If you suspect abuse

If you believe someone is misusing a Power of Attorney over a vulnerable person, learn the red flags of financial abuse and don’t wait to raise it. Protecting the principal is the entire point of the role.

_This article is plain-English education, not legal advice. Power of Attorney law varies by state, and reading it does not create an attorney–client relationship. For guidance on your specific situation, talk with a licensed attorney in your state._

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Education, not legal advice. Power of Attorney requirements vary by state.