In Ontario, a power of attorney is valid without a notary. However, if a power of attorney is notarized, it will be presumed to be valid in court.
The Power of Attorney Act, 1996 (the "Power of Attorney Act") in Ontario does not require a power of attorney to be notarized in order to be valid. However, the Power of Attorney Act does require that a power of attorney be signed by the principal in the presence of two witnesses. The witnesses must also sign the power of attorney and state their names and addresses.
If a power of attorney is notarized, the notary public will verify the identity of the principal and the witnesses and will also affix their seal to the power of attorney. This provides additional assurance that the power of attorney is genuine and that it was signed by the principal in the presence of two witnesses.