Common Law Separation in Quebec 2026: De Facto Spouse Rights, Property Division & the New Parental Union Regime

By Antonio G. Jimenez, Esq. | Florida Bar No. 21022 | Covering Quebec Divorce Law

Quebec de facto (common law) spouses have no automatic right to property division, spousal support, or family patrimony upon separation, regardless of how long they lived together. Unlike every other Canadian province, the Civil Code of Quebec does not recognize common law marriage as creating enforceable spousal rights. However, the landmark Bill 56 reform effective June 30, 2025 created a new "parental union" regime that automatically grants property-sharing rights to unmarried couples who become parents together after that date. This guide explains your legal options for common law divorce in Quebec, including unjust enrichment claims, cohabitation agreements, and the new parental union patrimony rules.

Key Facts: Quebec Common Law Separation

Why Quebec Treats Common Law Couples Differently

Quebec is the only Canadian province that does not grant automatic legal protections to common law (de facto) spouses upon separation. The Supreme Court of Canada upheld this distinction in Quebec (Attorney General) v. A (the "Eric v. Lola" case, 2013 SCC 5), ruling that the province's Civil Code provisions requiring marriage or civil union for property and support rights do not violate the Canadian Charter of Rights and Freedoms. The Court's 5-4 majority found that couples choose their relationship structure, and those who decline marriage can protect themselves through civil unions or cohabitation agreements.

Approximately 37% of Quebec couples live common law — the highest rate in Canada — making this legal distinction particularly significant. A de facto spouse who sacrificed career advancement for 15 years to raise children has no automatic legal claim to spousal support or property division upon separation. The Civil Code of Quebec Article 585 explicitly limits support obligations to married spouses and civil union partners, excluding de facto spouses regardless of relationship duration.

This legal framework reflects Quebec's civil law tradition, which prioritizes contractual freedom over presumed obligations. Unlike the common law provinces where relationships of sufficient duration trigger statutory protections, Quebec requires explicit legal formalization through marriage, civil union, or contract. The 2013 Supreme Court decision acknowledged this creates hardship in some cases but deferred to Quebec's legislative choice to preserve individual autonomy.

The New Parental Union Regime (Bill 56 — Effective June 30, 2025)

Quebec enacted Bill 56 on June 30, 2025, creating a mandatory "parental union" regime that automatically applies to de facto spouses who become parents of a child born or adopted after that date. This historic reform represents the most significant change to Quebec family law since the introduction of civil unions in 2002. Under C.C.Q. Article 521.20, a parental union forms automatically when de facto spouses become parents of the same child, regardless of relationship duration or intent.

The parental union patrimony includes three categories of assets acquired after the child's birth or adoption: the family residence (or rights conferring its use), movable property and furnishings serving household purposes, and motor vehicles used for family transportation. Upon separation, the net value of these assets is divided equally (50/50) between the spouses. This mirrors the family patrimony rules for married couples but applies only to assets acquired after the parental union formed.

Parental union spouses also receive succession rights. If one spouse dies without a will, the surviving partner automatically inherits one-third of the estate when there are children. Before Bill 56, a common law partner inherited nothing without a valid testament, regardless of relationship length. The reform also introduces a compensatory allowance remedy, permitting one spouse to claim compensation for contributions in property or services that enriched the other spouse's patrimony during the union.

Couples may opt out of the parental union regime entirely or modify its terms through a notarial deed executed before or during the union. Couples who had children before June 30, 2025 may voluntarily opt into the regime by mutual notarial agreement. However, the reform does not create spousal support obligations — even parental union spouses have no automatic right to support from each other upon separation.

Property Division for De Facto Spouses Without Parental Union

De facto spouses who do not qualify for the parental union regime — either because they have no children or their children were born before June 30, 2025 — retain no automatic property division rights. Under the Civil Code of Quebec, family patrimony provisions apply exclusively to married spouses and civil union partners. Common law couples typically follow an ownership-based approach: each spouse keeps the assets registered in their name, regardless of contribution history.

Joint ownership of property, accounts, or mortgages means assets are divided according to the ownership documentation, typically 50/50 unless the deed specifies otherwise. A jointly-owned home is sold and proceeds divided, or one spouse buys out the other's interest at fair market value. Disputes over jointly-held assets proceed through ordinary civil litigation rather than family court division procedures.

Assets held solely in one spouse's name remain that spouse's exclusive property upon separation. This applies even when the other spouse contributed financially to the asset's purchase, maintenance, or improvement. A partner who paid mortgage installments, renovated the home, or contributed to business assets for years may have no direct claim to those assets upon separation. The ownership principle means documentation matters enormously — keeping receipts, contracts, and payment records becomes essential for common law couples.

Pensions, RRSPs, and retirement savings accumulated during the relationship are not automatically divided upon common law separation. Unlike married spouses who share pension credits and registered investments through the family patrimony rules, de facto partners have no statutory entitlement to each other's retirement savings. Each spouse retains their own pension credits and registered accounts regardless of the disparity in accumulation during the relationship.

Unjust Enrichment: Your Primary Financial Remedy

Unjust enrichment under C.C.Q. Article 1493 provides the primary financial remedy for de facto spouses who contributed to their partner's wealth without receiving proportional compensation. This doctrine requires proof of five elements: the other spouse was enriched, you were correspondingly impoverished, a causal connection exists between the enrichment and impoverishment, no legal justification exists for the wealth transfer, and no other adequate remedy is available.

Quebec courts have applied unjust enrichment generously in long-term common law relationships. In Droit de la famille – 201878, the Court of Appeal upheld a $2.4 million award to a common law spouse whose domestic contributions enabled her partner to build a $17 million business empire during their relationship. Awards in similar cases typically range from 15% to 30% of the wealthier spouse's net assets, depending on the duration and nature of contributions.

For relationships exceeding 7 years, Quebec courts apply a simple presumption that a causal connection exists between one spouse's enrichment and the other's impoverishment, and that no justification exists for the disparity. This presumption shifts the burden to the enriched spouse to demonstrate why compensation should not be ordered. The presumption recognizes that lengthy domestic partnerships typically involve intertwined financial contributions that become impossible to precisely quantify.

The unjust enrichment remedy is calculated as the lesser of the enrichment amount or the impoverishment amount, assessed as of the lawsuit filing date. This means documentation of contributions throughout the relationship becomes critical. Evidence such as bank statements showing mortgage payments, renovation invoices paid by the impoverished spouse, and business records demonstrating unpaid labor all support unjust enrichment claims.

Cohabitation Agreements: Creating Your Own Protections

A cohabitation agreement (also called a de facto union agreement or life together contract) is a written contract between de facto spouses that creates enforceable rights upon separation. Under Quebec's general contract law principles, these agreements are valid and enforceable provided both parties consent freely, are of legal age, and the terms do not violate public order. While not mandatory, a cohabitation agreement is the only reliable method to guarantee property and support rights for common law couples.

Cohabitation agreements can address property division formulas (mirroring family patrimony rules if desired), spousal support obligations and amounts, family residence occupation rights, pension and retirement sharing, debt allocation, and life insurance beneficiary designations. Unlike married couples who cannot contract out of certain minimum protections, de facto spouses have nearly unlimited freedom to structure their agreement as they choose.

Notarization is strongly recommended though not legally required. A notarized agreement (notarial act) becomes inscribed in the notary's permanent minutes, making it virtually impossible to dispute authenticity. The notary's involvement also provides evidence that both parties received independent explanation of the terms and signed voluntarily. Private signature agreements are enforceable but more vulnerable to challenges regarding capacity, duress, or misrepresentation.

Both parties should disclose their assets and liabilities before signing. While Quebec does not impose a formal financial disclosure requirement for cohabitation agreements (unlike marriage contracts), material non-disclosure may provide grounds for annulment. Having each party obtain independent legal advice, though not required, further strengthens enforceability by demonstrating informed consent.

Parenting Arrangements for Common Law Separation

Children of de facto spouses have identical rights to those born to married parents. Both parents share parental authority (decision-making responsibility) and owe child support obligations regardless of their relationship status. The best interests of the child standard governs all parenting arrangements, with no presumption favoring either parent or any particular time-sharing arrangement.

Quebec uses the provincial Québec Model for the Determination of Child Support Payments when both parents reside in the province. This income-shares model considers both parents' disposable incomes, the number of children, parenting time arrangements, and special expenses such as childcare and education costs. The 2026 basic deduction is $13,575 per parent, indexed annually to the Quebec Pension Plan adjustment factor (3.2% for 2026).

Parenting time percentages significantly affect child support calculations. When one parent has the child more than 60% of the time (sole parenting — approximately 65% of Quebec cases), the other parent pays support based on the standard table amounts. Shared parenting (40-60% time with each parent) triggers a different calculation where both parents compute their theoretical support obligation and the higher-income parent pays the difference. Even with exactly 50/50 parenting time, the higher-earning parent typically pays child support to equalize the children's standard of living between households.

De facto spouses separating with children must submit their parenting arrangements to the Superior Court for approval, just as divorcing parents must. The court reviews proposed agreements for compliance with the child's best interests and may modify terms that appear inadequate. Uncontested separations with agreed parenting plans typically proceed through simplified court procedures without requiring a hearing.

Free Family Mediation Services

Quebec provides government-funded family mediation services to all separating couples, including de facto spouses. The Ministère de la Justice pays mediator fees at the regulated rate of CAD $130 per hour for the initial free sessions. Couples with children receive 5 hours of free mediation for first-time use, while couples without children or without dependent children receive 3 hours. Previously mediated cases (review situations) receive 2.5 hours.

Family mediation helps de facto spouses address parenting arrangements, child support calculations, and property division by agreement rather than litigation. The mediator facilitates negotiations but does not make decisions or provide legal advice. Both parties may consult independent lawyers between sessions. Mediated agreements are not automatically enforceable — they must be submitted to the Superior Court for homologation if the parties want court enforcement.

Under Bill 91 (2025), mediation has become mandatory for new family law proceedings. Parties must attend at least one mediation session before filing contested applications with the court, with exceptions for domestic violence situations or cases where mediation was previously attempted. This mandatory mediation requirement applies to de facto couples as well as divorcing spouses, recognizing that early negotiation often prevents costly litigation.

To access free mediation, contact an accredited family mediator directly or obtain a referral through the courthouse. The Barreau du Québec, Chambre des notaires du Québec, and professional mediator associations maintain directories of accredited mediators. After exhausting free hours, additional sessions cost CAD $130 per hour plus applicable taxes.

Court Procedures for Common Law Separation

De facto spouses with children must apply to the Superior Court of Quebec to obtain enforceable parenting orders and child support determinations. The court fees are CAD $108 for a joint application or CAD $325 for a contested application, plus a mandatory CAD $10 federal Central Registry fee. These amounts are indexed annually on January 1 and should be verified with the local court clerk.

Joint applications (Demande conjointe) proceed through a simplified procedure when both parents agree on parenting arrangements and child support. The application package includes the joint application form, proposed consent judgment, child support calculation worksheet (Schedule I), and parenting plan. Most joint applications are approved without a hearing if the proposed terms adequately protect the children's interests.

Contested applications (Demande en litige) follow standard civil litigation procedures with pleadings, discovery, case management conferences, and potentially trial. Family cases receive priority scheduling, but contested proceedings typically take 12-24 months to reach final judgment. Legal representation, while not required, is strongly recommended for contested matters given the procedural complexity and evidentiary requirements.

Unjust enrichment claims proceed through the Superior Court's civil division rather than family division. These claims follow ordinary civil procedure rules including examination for discovery, expert evidence on asset valuations, and potentially lengthy trials. Limitation periods apply — claims must generally be filed within 3 years of the circumstances giving rise to the claim becoming known, though this calculation can be complex in long-term relationships.

When to Consult a Lawyer

Legal consultation is essential for de facto spouses with significant assets, business interests, or complex financial arrangements. The absence of automatic property division rights means strategic planning becomes critical to protect your interests both during the relationship and upon potential separation. A family law lawyer or notary can draft cohabitation agreements, advise on unjust enrichment claim viability, and structure asset ownership to achieve your protection goals.

If you are separating after June 30, 2025 and have children born or adopted after that date, consult a lawyer immediately to understand your parental union rights and any opt-out options. The default 50/50 division of family residence, furnishings, and vehicles may not align with your circumstances, and modification requires mutual agreement through notarial deed.

Parents negotiating parenting arrangements should consider lawyer-assisted mediation or collaborative family law to ensure agreements properly address decision-making responsibility, parenting time schedules, holiday and vacation arrangements, relocation restrictions, and child support calculations including special expenses. Lawyers can also advise on tax implications of proposed arrangements.

De facto spouses considering unjust enrichment claims should consult litigation counsel experienced in Quebec civil law. These claims require substantial evidence gathering, expert valuations, and sophisticated legal arguments. The 15-30% recovery range in successful cases can represent substantial sums in high-asset relationships, justifying the litigation investment.

Frequently Asked Questions

Does Quebec recognize common law marriage?

No. Quebec is the only Canadian province that does not grant automatic legal protections to common law (de facto) spouses. The Supreme Court of Canada upheld this distinction in the 2013 Eric v. Lola decision (Quebec (Attorney General) v. A, 2013 SCC 5). Regardless of relationship duration — even 20+ years — de facto spouses have no automatic rights to property division, spousal support, or succession under the Civil Code of Quebec.

What is the parental union regime under Bill 56?

The parental union regime is a mandatory legal framework that automatically applies to de facto spouses who become parents of a child born or adopted after June 30, 2025. Under C.C.Q. Article 521.20, qualifying couples must divide the net value of the family residence, furnishings, and motor vehicles equally (50/50) upon separation. Couples may opt out by notarial deed.

Can I get spousal support as a common law partner in Quebec?

No automatic right to spousal support exists for de facto spouses under Quebec law. Even couples in parental unions (post-June 30, 2025) have no statutory support obligation. The only ways to obtain spousal support are through a valid cohabitation agreement that explicitly includes support provisions, or potentially through a successful unjust enrichment claim under C.C.Q. Article 1493.

How does child support work for common law separation?

Child support calculations are identical for married and common law parents. Quebec uses its provincial Québec Model for the Determination of Child Support Payments, which considers both parents' disposable incomes after a $13,575 basic deduction (2026 amount), the number of children, parenting time percentages, and special expenses. The 2026 tables reflect a 3.2% indexation increase over 2025 values.

What is an unjust enrichment claim?

Unjust enrichment under C.C.Q. Article 1493 allows a de facto spouse who contributed to their partner's wealth without proportional compensation to claim financial remedy. You must prove: your partner was enriched, you were impoverished, a causal connection exists, no legal justification applies, and no other remedy is available. Successful claims typically recover 15-30% of the wealthier spouse's net assets in long-term relationships.

Do I need a cohabitation agreement in Quebec?

A cohabitation agreement is not legally required but is strongly recommended for Quebec common law couples. Without such an agreement, you have no automatic rights to property division, spousal support, or your partner's pension upon separation. The agreement should be notarized for maximum enforceability and can address asset division, support, residence rights, and succession planning.

How much does common law separation cost in Quebec?

Court filing fees range from CAD $118 (joint application with $10 federal fee) to CAD $335 (contested with federal fee). Free family mediation provides 5 hours for couples with children or 3 hours without children. Lawyer fees vary widely: uncontested separations with agreed terms may cost CAD $1,500-3,500, while contested litigation can exceed CAD $15,000-50,000 depending on complexity.

Can I stay in the family home after common law separation?

If you are not on the property title, you have no automatic right to remain in the family home upon common law separation — unlike married spouses who have family residence protections. However, if you qualify for parental union (child born after June 30, 2025) and are the parent with primary parenting time, the court may authorize temporary residence in the family home even if your ex-partner owns it solely.

What happens to pensions in common law separation?

Pensions and retirement savings (RRSPs, TFSAs) are not automatically divided upon common law separation in Quebec. Each partner retains their own pension credits and registered accounts regardless of accumulation during the relationship. Only married spouses and civil union partners share pension credits through family patrimony division. Cohabitation agreements can include pension-sharing provisions if both parties agree.

How do I apply for common law separation with children?

File a joint or contested application with the Superior Court of Quebec where you or your children reside. Required documents include the application form, proposed parenting plan, child support calculation worksheet (Schedule I), and mediation certificate. Filing fees are CAD $108 (joint) or CAD $325 (contested) plus CAD $10 federal registry fee. Mandatory mediation (at least one session) is required before filing contested applications under Bill 91.