Common-Law Union Declarations (IMM 5409) – Notarization in Ontario

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Common-Law Union Declarations (IMM 5409) – Notarization in Ontario

Common-Law Union Declarations are a required document in many immigration and sponsorship applications involving couples who are not legally married but share a committed life together. For residents and sponsors across Aurora, Richmond Hill, Vaughan, and Newmarket, the notarized IMM 5409 form plays a vital role in meeting Immigration, Refugees and Citizenship Canada (IRCC) requirements.

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What Is a Common-Law Union Declaration (IMM 5409)?

The IMM 5409 is a sworn statutory declaration that confirms two individuals have been living together in a conjugal relationship for at least one year. It acts as formal proof of common-law status and is often required during the application process for family sponsorship or permanent residency.


To be accepted by IRCC, this form must be properly signed and notarized.

Who Requires a Notarized Common-Law Union Declaration?

Applicants may be required to submit a notarized IMM 5409 form in cases such as:


  • Sponsorship of a common-law partner for permanent residency
  • Spousal sponsorship applications without a legal marriage certificate
  • Immigration cases involving employee relocation or dependent applications
  • Any situation where proof of a common-law relationship is necessary for IRCC processing


Notarization helps prevent document rejections, delays, or requests for additional evidence from immigration officers.

Why Notarization Matters

The IMM 5409 is a statutory declaration, meaning it must be:


  • Signed in the presence of a licensed Ontario Notary Public
  • Properly commissioned according to Ontario law
  • Verified as a legally binding document under the Ontario Notaries Act

By notarizing this declaration, applicants demonstrate that the information has been formally attested and is credible under Canadian legal standards.

Who Uses This Service


Couples applying under the family sponsorship class



Immigration lawyers preparing client documentation


Employers assisting with partner relocation


Individuals managing their own applications and needing compliant documentation

Online Notarization for IMM 5409 in Ontario

Many users search for “online notarization for common-law union declaration,” but under Ontario law, this process is referred to as online commissioning.


We can legally commission this document through a secure video call, provided the signer is located in Ontario and presents valid identification.

What Notary Link Offers

Notary Link supports clients across Aurora, Richmond Hill, Vaughan, and Newmarket with prompt and professional notarization for immigration forms such as IMM 5409.


We offer:

  • Mobile notarization at your home, office, or another convenient location
  • Online commissioning appointments where permitted
  • Fast turnaround for time-sensitive immigration deadlines
  • Guidance on acceptable ID and signing requirements (without legal advice)
  • Full compliance with the Ontario Notaries Act

Service Area

We serve clients in:


  • Aurora
  • Richmond Hill
  • Vaughan
  • Newmarket

Book Your Appointment

If you require a notarized Common-Law Union Declaration for your immigration or sponsorship application, contact Notary Link today. We’ll ensure your documents are properly executed, helping you move forward with confidence and full compliance.

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