Notary Public in Ontario: Mississauga, Brampton and the GTA

A notary public in Ontario can witness or certify the signing of a document, certify a true copy of an original, and take affidavits and declarations. Notary public and commissioner of oaths services are available at our office in Mississauga’s City Centre, one minute from Square One, for clients from Mississauga, Brampton and across the GTA and Ontario. Walk in Monday to Friday, 9 a.m. to 6 p.m., or call to book a time.

Notarizing and commissioning are handled by our sister firm, Notary Point, a walk-in notary public in the same suite.

Notary public services

• Certified true copies of original documents
• Witnessing the signing of documents
• Affidavits and statutory declarations
• Invitation letters for visitors to Canada
• Travel consent letters for children
• Notarizing documents for use outside Canada

We notarize and commission documents. We do not apply for authentication (an apostille) on your behalf. If your document is going to another country, ask the authority that will receive it exactly what it requires before you visit.

Notarization: what it does and does not do

Notarization does not by itself make an agreement legally binding. It provides reliable evidence of who signed the document and when, which makes it harder for anyone to dispute the signature later. A certified true copy confirms that a photocopy matches the original the notary saw.

Commissioner of oaths in Ontario

Many institutions, in Canada and abroad, accept certain documents only if they have been sworn, affirmed or declared before a commissioner of oaths or notarized by a notary public. Common examples are statutory declarations, affidavits, court forms, change of name applications and declarations for passports, insurers and schools. If you plan to use a document or an agreement in another country, having it notarized is usually advisable, because the receiving institution may refuse it otherwise. Law Wise acts as a commissioner of oaths in Mississauga, and for clients who need a commissioner of oaths in Brampton, on the same walk-in hours.

Notary public near you: the areas we serve

Law Wise has one office, in Mississauga, and notarization is done in person, so every client comes to 33 City Centre Drive, Suite 606. The office is beside Square One, and clients come from well beyond Mississauga.

• Notary public Mississauga: the office is in the City Centre, beside Square One. Walk in during the hours above.
• Notary public Brampton: Law Wise serves Brampton clients from the Mississauga office at 33 City Centre Drive, Suite 606. The firm does not have an office in Brampton.
• Oakville, Milton and Burlington: clients from Halton come to the same Mississauga office. Call ahead if you are bringing several documents, so that they can all be done in one visit.
• Etobicoke, North York and Toronto: clients come to the same Mississauga office. If your document is for use abroad, check what the receiving authority requires before you travel, so that one visit is enough.
• Oshawa, Durham Region and the rest of Ontario: you are welcome, but the trip is longer. Call first to confirm that we can notarize your document and what to bring.

How to notarize your document

1. Bring the originalBring the document itself, complete but not signed or dated.
2. Bring identificationBring government-issued photo identification.
3. Sign in front of the notaryWe confirm your identity and watch you sign.
4. Take it with youThe document is notarized or commissioned while you wait.

Preparing for your appointment

• For certified true copies, bring the originals. We compare each copy with its original.
• Never sign beforehand. The signature must be made in front of the notary or commissioner.
• If your affidavit has exhibits, bring them. They are marked when the affidavit is sworn.

The most important point about a sworn statement is that everything in it must be true. You state what you know. If you state something you only believe to be true, you must say that it is a belief. Read the document before you come.

Drafting affidavits and declarations

We can draft simple affidavits and declarations where no legal advice is needed, for example an invitation letter, a travel consent letter or a common-law union declaration. An affidavit to support a claim in court is different: it needs a lawyer’s advice, which we can provide for a separate fee. Where a matter needs a lawyer’s advice and not only a signature, such as a will, a power of attorney or a real estate closing, we will tell you.

Documents we notarize or commission

• Invitation letters for visitors to Canada
• Letters of consent for children to travel abroad
• Statutory declarations of identity, relationship status, property ownership and professional accreditation
• Declarations for citizenship and immigration applications
• Common-law union statutory declarations and joint affidavits of marriage
• Certified true copies of degrees, diplomas, certificates, wills, and marriage and death certificates
• Affidavits of service and divorce affidavits
• Landlord and Tenant Board affidavits
• Name change affidavits for a child or an adult in Ontario
• Gender change affidavits
• Affidavits for stolen vehicles and insurance claims
• Sworn statements for a family gift of a used vehicle in Ontario
• OSAP affidavits about relationship status
• Income affidavits
• Declarations for lost or stolen passports, and declarations in lieu of a guarantor
• Signature and identity verification for employment and background checks
• Documents requested by a consulate (notarization only)
• Real estate and mortgage documents

For agreements about separation, parenting or cohabitation, see family law. For wills and powers of attorney, see wills and estates.

Making an appointment

You can walk in Monday to Friday, 9 a.m. to 6 p.m. To book a time, or to ask whether we can notarize a particular document, call 647-948-7819 or email info@lawwise.ca.

Common questions

This page is general legal information for Ontario, current as of 10 October 2026. It is not legal advice and does not create a lawyer-client relationship.