Affidavits Services

Comissioner of Oath Service

A Commissioner of Oaths is empowered under provincial legislation to administer and witness the swearing of oaths or solemn affirmations in the taking of an affidavit for any potential legal matter. Commissioners of Oaths are also empowered to witness any declaration as required under a statute. The person swearing an oath, making an affirmation or making a declaration is called a deponent or declarant.

OEIS cannot notarize documents or certify any documents in the capacity of a Notary Public.

Such requests are referred to law firms entitled to practice law in Ontario, Justice of the Peace or similar vocations eligible to notarize documents.

OEIS Process:

It is at the exclusive discretion of the OEIS’s Commissioner of Oath whether or not they choose to sign the document. If the Commissioner of Oath is uneasy about the identity of the deponent or the content of the document for any reason, the Commissioner of Oath may refuse to sign the document and the deponent will be referred to a lawyer. 

The Commissioner of Oath will not prepare or edit affidavits, nor provide legal advice. The Commissioner of Oath will not counsel or assist a person with completing the affidavit document. Any assistance required should be directed to the agency or party that has requested the form. OEIS does not supply blank affidavit forms. OEIS does not provide interpreters for the signing of affidavits. It is the responsibility of the deponent to obtain and provide an interpreter, if required.

OEIS certifies true copies of original documents such as birth, death, marriage certificates and passports. The original document must be provided in order to certify a true copy.


Commissioner of Oath services are provided at OEIS Investigation, between the hours of 9:30 to 4:30 p.m., Monday to Friday. An appointment is preferred in order to ensure availability of the Commissioner of Oath Agent.


You will need to appear before the Commissioner of Oath along with a proper identification (Original photo ID) such as a valid driver's license, current passport or any other government-issued photo identification as well as the completed affidavit with the exception of the signature. The signing of the affidavit must be completed in the presence of the OEIS Commissioner.


OEIS’s Commissioner of Oath only certifies by affixing a stamp that the required oath or affirmation or declaration has been properly administered. OEIS does not certify the truth of the statements contained in a document; the responsibility remains with the deponent or declarant.

OEIS’s Commissioner of Oath Agent is not responsible for the content of the affidavit; it is the responsibility of the person whose signature is being commissioned (the deponent). The deponent must understand not only the details to which he/she will attest, but also the fact that he/she is swearing an oath that the details are correct.

Contact Us

Commissioner of Oath services are provided at OEIS Investigation, between the hours of 9:30 to 4:30 p.m., Monday to Friday.

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