Common-law partner in Canadian immigration: what counts and how to prove it

“We live together, so we’re common-law.” In Canadian immigration, it is not that simple. A common-law partnership has a precise meaning: at least 12 months of continuous cohabitation, in a conjugal relationship, not just dating or sharing a flat. And it is up to you to prove it. Couples in or coming to Québec also have provincial steps to follow. Here is what counts, how to organize the evidence, and what changes in Québec, based on IRCC pages consulted on October 17, 2026.

Key takeaways

• A common-law partner has lived with you for at least 12 consecutive months in a conjugal relationship, and is at least 18.
• Time apart during those 12 months should be short and temporary.
• A shared address alone does not show a conjugal relationship.
• Varied, dated records with a clear timeline beat a thick pile of similar documents.
• The Statutory Declaration of Common-law Union (IMM 5409) does not replace evidence.
• In Québec, sponsorship adds a provincial undertaking, with its own cap.

What counts as common-law for immigration

According to IRCC’s page on who you can sponsor, a common-law partner:

• has lived with you for at least 12 consecutive months;
• is not legally married to you;
• is at least 18 years old;
• is in a genuine relationship with you.

Any separation during those 12 months should be short and temporary, such as for family obligations or business travel. IRCC also considers a common-law union to end if either partner ends the relationship.

Frequent visits, occasional overnights or an on-and-off arrangement do not establish continuous cohabitation. And roommates sharing an apartment are not a couple: the file has to show both the shared home and the conjugal nature of the relationship.

Category	What you must show
Spouse	A legal marriage and a genuine relationship
Common-law partner	At least 12 consecutive months living together in a conjugal relationship
Conjugal partner	An exclusive, interdependent relationship of at least 1 year with someone living outside Canada who cannot live with you or marry you

The test looks at substance, not labels: how you organize your home, share responsibilities, make decisions together and present yourselves to family and friends. No single item, not a joint lease, not a signed declaration, settles it on its own.

Pick the category that truly describes your relationship. See who can sponsor and be sponsored.

Proving continuous cohabitation, including time apart

Build a month-by-month timeline from the day you set up a shared home: address, moves, records available for each partner, explanations. For any absence (work, travel, family), document the dates, the reason, how you kept up your shared life and when you resumed living together. If there was a genuine break, say when and explain it plainly: accurate dates matter more than forcing everything into one story.

When you move, show the old address, the transition and the new address in sequence, with records from both homes, so there is no unexplained gap.

Documents that establish a shared home

Prioritize dated records that name each partner at the same address: leases, utility or insurance records, government mail, bank or service statements. A joint lease is helpful, but separate records also work when each shows one partner at the same address over overlapping dates. For example, one partner has the lease, the other has government mail and a bank statement at that address.

Cover the whole period rather than a thick bundle from a few months. If a record is missing or dates conflict, name the gap, explain it in a line and add independent corroboration.

Evidence that the relationship is genuine

Sort proof into two groups: shared residence and an ongoing, mutual relationship. Financial and household records show shared responsibilities; photos, messages and letters from people who know you show that others see you as a couple. They add context, but they do not replace dated proof of where you lived.

Both partners’ accounts must line up: how the relationship began, when you moved in, your moves, any time apart. If you correct an earlier date, explain the change instead of leaving a contradiction.

The statutory declaration and foreign partnerships

Many applications ask for the Statutory Declaration of Common-law Union (IMM 5409). It covers your address, how long you have lived together and shared ties (lease, property, accounts, insurance), and ends with a solemn declaration before a notary, commissioner of oaths or commissioner of affidavits. It never replaces the evidence: signing it does not create the status if the facts are not there. Likewise, a foreign civil partnership (such as a French PACS) can support your file but does not automatically meet the Canadian common-law definition.

When records are only in one partner’s name

Many couples have a lease, internet bill or insurance policy in one name only. That is common, and it is not a problem in itself, as long as you do not let one document tell the whole story. Add records that independently link the other partner to the same address during the same period: government mail, a driver’s licence or health card showing the address, a bank or phone statement, an employer letter, a school record. Then explain in one sentence why the lease has a single signatory (for example, one partner moved in later, or the landlord would not add a name).

The same logic applies to finances. Partners do not have to share a joint account to be common-law, but the file should show how the household actually runs: who pays rent, who pays groceries, whether one partner supports the other, whether you are named on each other’s insurance or as beneficiaries. A short explanation that matches the records is more convincing than a stack of statements with no context.

Time apart and moves, explained properly

Separations happen: a work contract in another city, a family emergency abroad, a visa that forced one partner to leave Canada for a while. IRCC expects separations during the 12 months to be short and temporary. Present each absence with its dates, the reason and the proof (travel records, a work assignment letter), then show that the relationship and the shared home continued: messages, money transfers, the household bills that kept running, and the date you resumed living together.

If there was a genuine break in living together, do not hide it. Recount the timeline honestly; it may mean you need to wait until you have 12 continuous months again, or that a different category, such as spouse after a marriage, fits better. Forcing an uninterrupted story onto dates that do not support it creates contradictions an officer will notice, and a misstatement can have far worse consequences than a delay (see misrepresentation).

One relationship, several applications

Common-law status can matter in more than one file: a spousal sponsorship, a spousal open work permit, a permanent residence application where the partner is included as a family member. Each application has its own checklist. Reuse records where they fit, but check that each one answers that application’s questions, and keep dates and addresses identical from one file to the next. If your situation changed since an earlier application (a move, a separation, a marriage), say so clearly rather than leaving two files that contradict each other.

Common-law status for immigration and family law in Québec are separate questions. Being common-law partners for IRCC does not by itself give you the rights of married spouses under Québec law; for those consequences, get advice specific to your situation.

Common mistakes

• Counting the relationship, not the cohabitation: 12 months of dating is not 12 months of living together.
• Sending only recent records that do not cover the full period.
• Relying on the statutory declaration to replace the evidence.
• Leaving gaps unexplained: a move or an absence with no note.
• Partners telling different stories about when they moved in.
• Choosing the conjugal partner category for convenience rather than because of a real obstacle.

Organizing a clear evidence package

1. A short relationship chronology.
2. A cohabitation table: dates, address, supporting records, explanations.
3. Consistently labelled exhibits, grouped by what they prove.
4. A note for anything that is not obvious: a name on a bill, a move, a period without records.
5. Translations as the application instructions require.
6. A final check: dates, addresses and personal details identical across forms and records.

Sponsorship and Québec-specific steps

Common-law status matters in sponsorship and in some temporary applications, such as spousal open work permits, but forms and evidence change from one route to another. In Québec, sponsorship has a federal step and then an undertaking with the MIFI: it lasts 3 years from permanent residence, and Québec caps undertaking applications for spouses and partners at 13,300 from July 2, 2026 to June 30, 2028. See the Québec steps and cap and the sponsor’s undertaking.

Our spousal sponsorship in Québec page explains how we assess eligibility, prepare relationship evidence and organize both applications, and our family sponsorship page covers the other categories. To review your file, you can describe your situation or book a consultation.

Frequently asked questions

Can we become common-law by signing a declaration before 12 months together?

No. You must have lived together for at least 12 consecutive months. If you are married, the spouse category applies.

Does the IMM 5409 have to be sworn?

Yes: it ends with a solemn declaration made before a notary, a commissioner of oaths or a commissioner of affidavits.

Does being common-law for immigration give us the same rights under Québec family law?

Not necessarily: immigration definitions and family law are separate. For family-law consequences, get advice specific to your situation.

What if our relationship ends during processing?

IRCC treats a common-law union as ended when either partner ends the relationship. Get case-specific guidance right away before deciding how to proceed.

Do documents in another language need to be translated?

Yes, records that are not in English or French must be translated according to the instructions of the application you are filing. Keep the original, the translation and the translator’s declaration together.

We declared ourselves common-law in an earlier application. Is that enough now?

It helps show your history, but you still have to answer the new application’s questions with current evidence. Stay consistent with the earlier file and explain any change.

We got married recently. Should we apply as spouses or common-law partners?

Once you are legally married, the spouse category describes your situation. Your earlier cohabitation still helps show that the relationship is genuine.

An old address record doesn’t match our timeline. What should we do?

Keep the original record and add a short note explaining the difference between the date it shows and the period you are describing.

Official sources

Official pages consulted on October 17, 2026:

• IRCC — Who you can sponsor
• IRCC — Statutory Declaration of Common-law Union (IMM 5409)
• IRCC — Evaluation of the Family Reunification Program
• Québec — Rules for receiving undertaking applications