Common-Law Partner vs Spouse in Canada: What Is the Difference for Immigration? (2026)
The short answer: IRCC sponsors spouses and common-law partners under the same program, with the same sponsor rules and generally the same fees. The difference is what you must prove. A spouse must show a legally valid marriage and a genuine relationship. A common-law partner must show at least 12 continuous months of living together in a conjugal relationship, and a genuine relationship. Both can be sponsored from outside Canada, and inland applications are also possible if you live together in Canada and your partner meets IRCC's in-Canada requirements.
How does IRCC define a spouse?
A spouse is a person you are legally married to. The marriage must be valid under the law of the place it took place and under Canadian law, and both partners must have been at least 18 when they married. IRCC also looks at whether the relationship is genuine and was not entered into mainly to gain status. Marriage requirements vary by country, so confirm that yours qualifies.
How does IRCC define a common-law partner?
A common-law partner is someone who is not legally married to you and has lived with you in a conjugal relationship for at least 12 continuous months. See how long it takes to be common-law.
What is the same?
The sponsor must meet the same eligibility rules. See who can sponsor.
Both are covered by the same sponsorship undertaking: 3 years from the day the person becomes a permanent resident, outside Quebec.
Both require proof that the relationship is genuine.
Both can be sponsored outland, and inland if you live together in Canada and your partner meets IRCC's in-Canada requirements. See inland vs outland.
Government fees are generally the same. See costs and fees.
What is different?
Spouse
Legal status: Legally married
Time requirement: None for marriage itself; relationship must be genuine
Key document: Marriage certificate plus relationship evidence
Typical evidence: Wedding proof, photos, communication, shared life
Common-law partner
Legal status: Not married
Time requirement: 12 continuous months of living together
Key document: IMM 5409 declaration and cohabitation evidence
Typical evidence: Same address documents over 12 months, shared life
Which one is easier?
Neither is automatically easier. A marriage certificate proves the marriage, but not that the relationship is genuine. A common-law case depends on showing the full 12 months. Officers can refuse either if the documents don't show a genuine relationship. See why spousal sponsorships get refused.
Should we marry to avoid proving common-law?
That is a personal decision, and one that should not be driven by immigration alone. Marrying changes your legal rights and obligations. If you are close to 12 months, you may simply wait. If you are far from it, compare your options with a representative.
What if we can't live together or marry?
The conjugal partner category may apply if your partner lives outside Canada and legal, immigration or other barriers stop you from living together or marrying. See conjugal partner sponsorship.
Who does this affect?
Unmarried couples deciding whether to marry
Couples who recently moved in together
Couples comparing the paperwork for each route
What should you do?
Check whether you are legally married or meet the 12 months.
Compare the evidence you have for each route.
Check sponsor eligibility.
Decide inland or outland.
Get advice if your facts are unusual.
Frequently asked questions
Is common-law the same as marriage for Canadian immigration?
IRCC treats spouses and common-law partners together under its spousal sponsorship program, but they are defined and proven differently.
Is it faster to sponsor a spouse than a common-law partner?
Check IRCC's processing times tool for your category.
Do common-law partners pay different fees?
Generally no. Check IRCC's current fee list.
Can a common-law partner be sponsored from outside Canada?
Yes, if you meet the definition. Living together abroad can count when you can prove it, and inland applications have extra requirements.
Can I be refused if I am common-law?
Yes, if the officer is not satisfied you meet the definition or that the relationship is genuine.
Key takeaways
Spouses and common-law partners are sponsored under the same spousal sponsorship program.
Spouse: valid marriage plus genuine relationship.
Common-law: 12 continuous months together plus genuine relationship.
Both need a strong, consistent evidence package.
The bottom line
The program is mostly the same. The proof is different. Pick the one that fits your facts and build the evidence for it.
Want a second opinion on which route fits? E-Pathway Immigration, led by Domonic Cheung, RCIC in Vancouver, can review your situation. Book a case review.
More spousal sponsorship guides: Spousal and common-law sponsorship · Spousal sponsorship guide hub
Last reviewed: October 2026
Sources: IRCC, Who you can sponsor; IRCC, Check if you're eligible to sponsor; IRCC, Statutory Declaration of Common-law Union (IMM 5409).
This article provides general information only and is not legal advice. Immigration options and outcomes depend on individual circumstances. Consult a qualified representative for advice about your situation.
About the author
Domonic Cheung is a Regulated Canadian Immigration Consultant (RCIC), licence R711344, with E-Pathway Immigration in Vancouver, BC. You can verify his licence on the College of Immigration and Citizenship Consultants (CICC) public register.
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