Do You Need to Notarize a Non-Disclosure Agreement or Contract?

Non-disclosure agreement with a padlock and briefcase
In-office7 days a week at 21 King St W (5th Floor) · 9 AM–5 PM
MobileWe come to your home, workplace, hospital or campus · 9 AM–7 PM, 7 days

Clients sometimes ask us to notarize non-disclosure agreements (NDAs), service contracts or informal agreements. It’s a reasonable instinct, but in most cases it isn’t legally required.

Is notarization required?

Generally, a contract in Ontario can be valid without being notarized. What matters is the agreement itself, which is why the drafting is best left to a lawyer. Notarization does not make an agreement more enforceable, and it does not confirm that the terms are fair or legal.

When notarization can still be useful

  • the other party or an institution specifically requires a notarized signature;
  • the document will be used outside Canada, where notarization is often expected;
  • you want independent confirmation of who signed and when;
  • a signer is signing remotely from the other parties and their identity needs to be verified.

What a notary actually does

When we notarize a signature, we confirm the signer’s identity, watch them sign, and complete a notarial certificate. We don’t review the contract, explain its terms or advise whether you should sign it.

Before your appointment

  1. Have the agreement reviewed by your lawyer if you have questions about its terms.
  2. Bring it unsigned, with all pages.
  3. Each signer needs valid photo ID.

Related reading

Book with Crown Seal Notary

Crown Seal Notary serves Hamilton and the surrounding area seven days a week. In-office appointments are available at 21 King St W, 5th Floor, and our mobile service comes to your home, workplace, hospital or care home. To book, call 289-207-0851, email info@csnotary.org, or book online. You can also browse all of our services or read our FAQs.

Please note: Crown Seal Notary provides notarization and commissioning services only. We do not provide legal, immigration or financial advice, and we cannot tell you what to write in your document. If you are unsure which document you need, please check with the organization that asked for it or speak with a lawyer or licensed paralegal.

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Crown Seal Notary is an independent notary public and commissioner of oaths. We are not a government agency and do not issue or renew passports, visas, IDs, licences, permits, certificates or background checks.