Certified notary services in Toronto and New York
We provide reliable, professional notary services in both Ontario and New York for individuals, businesses, and legal professionals who need trusted document authentication.
- Law Society of OntarioLicensed in Ontario
- New York State BarAdmitted in New York




Document authentication made simple.
Need documents notarized? We offer fast, reliable notary services across New York and Ontario — including cross-border paperwork.
Our services are tailored for individuals, businesses, and legal professionals who need accuracy, speed, and trust — all in one place.
- In-person and remote notarization (where permitted)
- Certified copies and affidavits
- Cross-border document notarization
- Apostille coordination
- Legal document witnessing and verification
Reliable, professional notary services for individuals and businesses
- 01Proven track record
We’ve helped businesses navigate complex regulatory and legal challenges, providing practical solutions and strategic guidance to protect their operations and support growth.
- 02Personalized attention
We believe in building strong relationships with our clients, offering tailored legal strategies to meet your unique needs.
- 03Expertise you can trust
With years of experience navigating complex cases, we bring deep knowledge and strategic perspective to every client we take on.
What our clients say
Joseph explained every step of the legal process in a clear and straightforward manner. I always felt informed and at ease. His professionalism and dedication gave me confidence that my case was in the right hands. I highly recommend his services to anyone seeking legal assistance.
Leena E.
Working with Joseph Mayo was a fantastic experience. He is incredibly knowledgeable and efficient, helping me with important files that needed quick submission. His expertise and dedication were evident, and he guided me through the process in record time. I’m grateful for his prompt and thorough assistance. Highly recommended for anyone needing legal expertise!
Ziad A.
Joseph’s the kind of lawyer who actually listens. I never felt like just a file on his desk—he really took the time to understand me and what I was going through. It made the whole experience a lot less stressful. I’m honestly so glad I found him.
Wisam R.
Guides on this topic
Common questions
What is a notary public and what do they do?
A notary public is an officer of the law authorized to administer oaths, witness signatures, certify true copies of documents, and authenticate documents for use in legal proceedings. In Ontario, notaries public can perform a broader range of functions than commissioners of oaths — including certifying copies of documents for use outside Canada. In New York, notaries witness signatures and administer oaths. At Mayo Law, our notary services are performed by a licensed lawyer in each jurisdiction.
What's the difference between a notary public and a commissioner of oaths in Ontario?
Both can administer oaths and witness sworn statements, but a notary public has additional authority that a commissioner of oaths does not — most importantly, the ability to certify true copies of documents (useful for documents going abroad or to government agencies), notarize documents for international use, and authenticate signatures. In Ontario, every lawyer and paralegal licensed by the Law Society of Ontario is automatically a commissioner for taking affidavits, but notaries public are appointed by the Attorney General under the Notaries Act. A licensee who wants the office applies to Official Documents Services, is exempt from the qualification requirements that other applicants must meet, and receives an appointment that does not expire while the licensee remains in good standing. Commissioners of oaths are appointed for specific purposes and have a narrower scope.
Can you notarize documents going to another country?
Yes. We notarize documents for use abroad regularly — including powers of attorney for foreign transactions, immigration support letters, sworn statements for foreign court proceedings, and corporate documents for foreign business registrations. Documents going to certain countries also require authentication (Global Affairs Canada or US State Department) and legalization by the receiving country’s embassy or consulate. For Hague Convention signatory countries, an apostille replaces this process. We coordinate the full authentication and apostille chain for clients.
Do you offer same-day notarization?
Yes, in most cases. For straightforward notarizations — affidavits, statutory declarations, certified copies, and witnessed signatures — we typically accommodate same-day or next-business-day appointments at both our Toronto and New York offices. Documents requiring authentication or apostille take longer due to the government processing involved (typically 1 to 6 weeks depending on the country and method). Call ahead to confirm timing for your specific document.
Can you notarize cross-border documents between Canada and the US?
Yes, and this is one of the specific advantages of working with a cross-border firm. A document notarized in Ontario for use in New York or vice versa needs to be done correctly to be accepted on the other side of the border — wrong format, missing seal, or wrong jurisdiction certification can cause delays or rejection. Because we are licensed in both Ontario and New York, we can advise on the correct format and notarize the document in the jurisdiction it needs to be enforceable, avoiding the back-and-forth that happens when these documents are improperly executed.
What is an apostille and when do I need one?
An apostille is a certification issued under the Hague Convention of 1961 that authenticates a public document (including notarized documents) for use in another Hague signatory country. As of January 2024, Canada is a party to the Hague Convention — meaning Canadian documents can now be apostilled for use in other Hague countries instead of going through the longer embassy authentication and legalization chain. The US has been a party for decades. We coordinate apostille issuance through the correct competent authority, which is Official Documents Services for a document notarized in Ontario and Global Affairs Canada for a document issued by the Government of Canada, or through the relevant US authorities for clients whose documents are going to Hague signatory countries.
How much does notarization cost?
Notarization fees vary by document complexity and jurisdiction. A typical affidavit or statutory declaration in Ontario is approximately $50 to $100 per document or oath. Certified copies are similar. Cross-border documents requiring multi-step authentication and apostille have additional government fees and coordination time. For complex packages — for example, a series of corporate documents going abroad — we provide a written fee quote upfront.
What documents do I need to bring for notarization?
Bring valid government-issued photo identification (passport, driver’s license, or other accepted ID) for every person signing — the notary must verify identity at the time of signing. Bring the original document in its final form (not partially completed). Do not sign the document in advance — the signature must be witnessed by the notary. For certified copies, bring both the original document and any copies you want certified. For specific document types like immigration packages or cross-border legal documents, additional materials may be required — call ahead to confirm.

Notary services performed by a licensed lawyer in each jurisdiction.
Joseph Mayo is the principal attorney at Mayo Law. He is licensed to practice law in both Ontario and New York, holds a Master of Laws (LL.M.) from New York University School of Law with a specialty in international business and a Bachelor of Arts (B.A.) in law and a Master of Arts (M.A.) in business from Netanya Academic College, and is a member of the American Bar Association and the Law Society of Ontario. His practice focuses on cross-border immigration, business law, white collar defense, and compliance.
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