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How to Choose A Credible Witness is for Powers of Attorney in Pennsylvania?

Published August 4th, 2026 by Mobile Notary Now

In Pennsylvania, a credible witness for a Power of Attorney (POA) is someone who meets the statutory requirements for witnessing under 20 Pa.C.S. § 5601(b)(3)(ii). These rules apply to all POAs executed on or after January 1, 2015.

Key requirements for a credible witness:

  1. Age and identity
    • The witness must be 18 years or older.
    • They must be able to identify themselves and the principal.
  1. Not the principal or agent
    • The witness cannot be the principal (the person granting the POA) 
    • The witness cannot be the designated agent (the person receiving authority) 
  1. Not the notary
    • The witness cannot be the notary public or another person authorized to take acknowledgments.
  1. Not the substitute signer
    • If the principal is unable to sign, the person signing on their behalf must also be excluded from being a witness.
  1. Independent observation
    • The witness must be present at the signing and able to observe the principal’s signature or mark, and the notarization (if applicable). 
  1. No conflict of interest
    • The witness should not have a personal or financial interest in the transaction that could impair their impartiality.

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