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Cohabitation Agreement Template | Family Law Act s.53

Common-law partner agreement built to Family Law Act s.53 and s.55 formalities. Covers property, debt and spousal support across Canadian provinces.
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A cohabitation agreement is a written domestic contract that lets two people living together, or planning to, set out how property, debt, finances, and support will be handled during the relationship and if they ever separate. In Canada it matters most for common-law partners, because unmarried couples do not get the automatic property regime that married spouses do. The document fixes expectations early, replaces guesswork with clear terms, and gives a court something concrete to work from later. Couples blending families, sharing a mortgage, or bringing a business into the relationship rely on it to protect what they built before moving in together.

The practical value is simple. Without an agreement, a common-law partner who wants a share of the other's property usually has to sue on unjust enrichment or constructive trust, which is slow, expensive, and uncertain. A clean cohabitation agreement avoids most of that.

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What is a cohabitation agreement?

A cohabitation agreement is a private contract between two people who live together in a conjugal relationship without being married, or who intend to start. It records each partner's rights and obligations while they cohabit, on separation, and sometimes on death. The agreement can set out who owns what, how a jointly occupied home is treated, how debts are split, whether one partner pays or receives spousal support, and how shared expenses run day to day. It cannot dictate parenting outcomes : a court still decides decision-making responsibility and parenting time based on the child's best interests, and child support belongs to the child, not the parents.

People often confuse three documents. A cohabitation agreement is signed by unmarried partners. A marriage contract (the Canadian term for a prenup) is signed by spouses who are married or about to marry. A separation agreement is signed once a couple has already decided to split and need to divide their affairs. The line blurs in one important way: in several provinces a cohabitation agreement is deemed to become a marriage contract if the same couple later marries, unless the document says otherwise. That single mechanism is why so many agreements drafted at the kitchen table create surprises years later. A template that ignores it, or that treats common-law and married status as interchangeable, is the wrong document for the situation.

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When do you need this document?

The clearest trigger is the decision to move in together when the two people arrive with unequal assets. One partner owns the condo, the other is paying down student debt; one runs an incorporated business, the other has a pension. Putting the agreement in place before the boxes are unpacked is the textbook scenario, because it is the moment when nobody can later argue they were rushed or cornered. A close second is the shared-home purchase, where partners take title together but contribute very different down payments and want a record of who gets what if they part. Our Canadian purchase and sale agreement template often sits alongside a cohabitation agreement in exactly this situation, since the property paperwork and the relationship paperwork need to say the same thing.

Blended families are another frequent reason. A partner with children from an earlier relationship usually wants to protect assets intended as an inheritance, and the agreement is where that intention gets written down. Couples who are already living together and have simply never papered the arrangement also reach for one, often after a friend's messy split makes the risk concrete. It is never too late to sign : an agreement made years into a relationship is still valid if it meets the statutory formalities. One edge case worth flagging is the couple who plans to marry eventually. Because the agreement may convert into a marriage contract on the wedding day, they should decide now whether they want that automatic conversion or a clause that ends the agreement at marriage. Another edge case is the partner financing a renovation on a home titled in the other's name : without a written term, the contributor's claim later depends on fact-heavy trust litigation rather than a clear paragraph.

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Key clauses included in our template

  • The identification of the parties and relationship status opens the agreement and states plainly that the couple is unmarried and cohabiting or about to. This matters because the document's entire legal character depends on it, and a contract that muddles common-law and married status invites a challenge.
  • The property and asset schedule lists what each partner brings in and how property acquired during the relationship will be treated. It distinguishes assets kept separate from those intended to be shared, and it addresses the home specifically, since unmarried partners do not get the matrimonial-home protections that married spouses enjoy.
  • The debt and financial responsibility clause sets out who is liable for existing debts and how joint expenses, the mortgage, and household costs are divided. Clear wording here prevents one partner from absorbing the other's pre-relationship liabilities by accident.
  • The spousal support provision records whether support will be paid on separation, in what amount, and for how long, or whether each partner waives it. Courts examine support waivers closely, so the clause is drafted with the numbers and reasoning documented rather than left as a bare "support is waived".
  • The financial disclosure acknowledgment confirms that both partners exchanged honest information about income, assets, and debts before signing. Incomplete disclosure is the single most common ground for setting an agreement aside, so this clause does real protective work.
  • The dispute resolution and review clause explains how disagreements get handled and when the agreement should be revisited, such as on the birth of a child, a marriage, or a major change in income. A built-in review trigger keeps the document from going stale.
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Regional considerations

Ontario offers no statutory property division to common-law partners, which makes the cohabitation agreement the main tool for creating property rights the law does not otherwise supply. The agreement is governed by section 53 of the Family Law Act and must satisfy the writing, signature, and witness rule in section 55(1). Couples should remember the section 53(2) deeming rule: if they marry, the agreement becomes a marriage contract unless they opt out in writing. Without an agreement, a partner seeking a share of property is left to unjust enrichment or constructive trust claims, which Ontario courts treat as fact-intensive and uncertain.

British Columbia is the outlier among common-law provinces. Under the Family Law Act, SBC 2011, c. 25, partners who cohabit for two years in a marriage-like relationship gain property and support rights close to those of married spouses, with family property generally divided equally. A cohabitation agreement in BC is therefore used to contract out of that default sharing, and the courts will respect it only where disclosure was full and the terms are not significantly unfair. Drafting that simply mirrors an Ontario agreement misses the point, because the starting position is opposite.

Alberta recognises common-law couples as adult interdependent partners under the Adult Interdependent Relationships Act, with property dealt with under the Family Property Act. Status arises after three years of cohabitation, on having a child together, or by signing a formal adult interdependent partner agreement. An agreement executed before that status exists can be vulnerable, so Alberta documents often declare the partners adult interdependent or provide for re-execution once the threshold is met. For families weighing how an agreement fits with later estate planning, our Canadian wills and powers of attorney documents cover the succession side that a cohabitation agreement deliberately leaves alone.

Other provinces follow their own thresholds. Saskatchewan extends family property rules after two years of continuous cohabitation, while Manitoba does so after three years or on registration of the relationship with its Vital Statistics Agency. The practical lesson is consistent across the country: the agreement must be drafted to the province where the couple actually lives, because the default rights it modifies are different in each one.

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How to fill out this cohabitation agreement

You start by selecting your province, since that single choice determines which statute governs the agreement and which default property and support rules it is written against. From there the form asks for the full legal names of both partners and confirms your relationship status, then walks you through the financial picture each of you brings to the relationship. You enter assets, debts, income, and any property you want to keep separate, and the template builds the disclosure schedule from those answers so the record of who told what is created as you go. The form then asks how you want to treat the shared home, how household expenses and debts are divided, and whether spousal support will be paid or waived on separation. Where the choices carry legal weight, such as a support waiver, the wording is drafted to the language courts expect rather than left vague. You finish by adding the date and the witness details required for a valid domestic contract, then download the completed agreement in Word and PDF. If your circumstances later change, our family and divorce document collection includes the separation and parenting documents you may need next.

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Common mistakes to avoid

The mistake that ends more agreements than any other is thin financial disclosure. A partner who hides or rounds down income, assets, or debts hands the other a ready-made argument to have the whole contract set aside, and judges routinely accept it. Closely related is signing under pressure : an agreement produced the night before moving day, or just before a wedding, looks coercive in hindsight even when it was not, which is why timing the signature well ahead of any deadline protects both sides. Skipping independent legal advice is the third recurring error. It is not always strictly mandatory, but its absence is one of the first things a court notices when a partner asks to escape an agreement that turned out badly.

People also reach for the wrong document or the wrong version of it. Using a married-couple marriage contract for an unmarried relationship, or ignoring the rule that a cohabitation agreement can convert into a marriage contract on marriage, creates terms that quietly stop meaning what the couple intended. Others try to lock in parenting or child support outcomes, which courts will not enforce because those belong to the child. Finally, an oral understanding is not a contract at all : without writing, signatures, and a witness, there is nothing to enforce. Couples who later separate and need to formalise the split should move to a proper Canadian separation and family law agreement rather than relying on what they once discussed.

Key takeaways

Who it protects

Common-law partners need a clear property plan

A cohabitation agreement is built for unmarried couples because, in many provinces, common-law partners do not get the automatic property-sharing rules that married spouses receive. It lets you decide in advance who keeps what, how a jointly occupied home is handled, how debts are split, and whether spousal support is payable. It is especially useful when one partner brings a business, savings, or a prior home into the relationship.

Formalities

If it is not written and witnessed, it fails

Enforceability can turn on strict signing rules. In Ontario, the Family Law Act allows cohabiting partners to contract about rights and obligations (s.53), but a domestic contract is unenforceable unless it is in writing, signed by both parties, and witnessed (s.55(1)). A heartfelt oral deal, a text message thread, or a handshake about property or support is not a domestic contract, even if both partners meant it sincerely.

Consequences

Without an agreement, disputes become lawsuits

Without a cohabitation agreement, a common-law partner seeking a share of the other partner’s property often ends up suing using unjust enrichment or constructive trust arguments. That route is typically slow, expensive, and uncertain, because the court must reconstruct contributions and intentions after the fact. A well-drafted agreement replaces guesswork with clear terms and gives the court something concrete to apply if separation ever happens.

Frequently Asked Questions

Yes, when it is properly made. A cohabitation agreement is a domestic contract, and in provinces like Ontario it is enforceable only if it is in writing, signed by both partners, and witnessed, under section 55(1) of the Family Law Act. Meeting those formalities is the floor, not the ceiling. A court can still set the agreement aside if one partner failed to disclose finances honestly, signed under duress, or the terms are unconscionable. Full disclosure and independent legal advice are the two things that most reliably keep an agreement standing if it is ever challenged, so a signed template backed by real disclosure is far stronger than signatures alone.

The agreement downloads in both Word and PDF. The Word version lets you make further edits, add province-specific wording, or update figures as your finances change, which matters because a cohabitation agreement is meant to be revisited when circumstances shift. The PDF is the clean, print-ready copy you sign and keep. Since a valid domestic contract has to be signed by both parties and witnessed, most couples print the PDF for signing and keep the Word file as their editable master. Having both formats means you are never locked out of your own document or forced to rebuild it from scratch later.

You do not need any minimum period to sign one, and signing early is usually the better choice. The thresholds in family law decide when common-law rights and obligations arise, not when you can make an agreement. In Ontario, spousal support eligibility generally requires three years of cohabitation or a child together. In British Columbia, two years of marriage-like cohabitation brings property and support rights close to marriage. Alberta recognises adult interdependent partners after three years, on having a child, or by formal agreement. A cohabitation agreement signed before any of those clocks runs out lets you decide the terms in advance rather than inheriting your province's defaults.

No. A cohabitation agreement can record the partners' intentions, but it cannot bind a court on parenting. Decision-making responsibility and parenting time are determined by the child's best interests, and child support is the child's right, calculated under the Federal Child Support Guidelines rather than waived or fixed by the parents. Any clause that purports to lock in custody or eliminate child support is unenforceable. What the agreement can usefully do is keep parenting questions separate from the financial and property terms, so the enforceable parts are not dragged down by clauses a judge will ignore.

Not strictly, but it is strongly advisable, and one lawyer cannot act for both partners because of the conflict of interest. Independent legal advice means each partner gets separate advice about what they are signing and what they are giving up. While the statute does not always make it mandatory, its absence is one of the most common reasons an agreement gets challenged, and in some situations involving property or support waivers it becomes effectively necessary for enforceability. Documenting that both partners had the chance to get advice dramatically increases the odds the agreement survives court scrutiny.

In several provinces the agreement automatically converts into a marriage contract on the wedding day. In Ontario, section 53(2) of the Family Law Act deems a cohabitation agreement to become a marriage contract once the parties marry, unless the agreement expressly says it ends at marriage. This is significant because marriage brings new rights, including matrimonial-home protections that did not apply while you were common-law, and some clauses that worked before may no longer hold. The practical step is to decide upfront whether you want the conversion or an opt-out clause, and to review the agreement once you marry so its terms still match your legal status.

Yes. A cohabitation agreement is meant to be living document that keeps pace with your circumstances. To amend it, you prepare a new written agreement, sign it, and have it witnessed, exactly as you did with the original, because an amendment to a domestic contract must meet the same formalities to be enforceable. Common triggers for a review are the birth of a child, a significant change in either partner's income, the purchase or sale of a home, or a planned marriage. Building a review clause into the original document makes these updates routine rather than something one partner can resist.

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Cohabitation Agreement Template | Family Law Act s.53
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Updated on June 19, 2026

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