When it comes to signing and validating important documents in Ontario, many people are unsure whether they need a notary public or a commissioner of oaths. Both roles are authorized to witness signatures, but they serve different purposes. For Gloucester residents, knowing the difference can save time and prevent mistakes.
What a Notary Public Does
A notary public has broader authority than a commissioner. In Ontario, a notary can:
- Certify true copies of original documents
- Witness and verify signatures
- Prepare and notarize affidavits, statutory declarations, and contracts
- Authenticate international documents for use outside Canada
Notaries are especially important if your documents will be used internationally or need a higher level of legal verification.
What a Commissioner of Oaths Does
A commissioner of oaths has more limited powers. They can:
- Administer oaths, affirmations, and declarations
- Witness the signing of affidavits and statutory declarations
However, a commissioner cannot certify copies of documents or notarize documents for international use. Their role is usually sufficient for many provincial and municipal purposes.
Which One Do You Need in Gloucester?
If you need to send documents abroad, or if the receiving institution specifically requires a notarized document, you must see a notary public. If you only need someone to witness an oath or declaration for use within Ontario, a commissioner of oaths may be enough.

Final Thoughts
For Gloucester residents, the choice between a notary and a commissioner depends on the type of document and where it will be used. When in doubt, consult a local professional to ensure your documents meet the proper legal requirements.



