Moving in together is an exciting step. It often reflects commitment, trust, and shared plans for the future. But it is also a legal and financial transition — one that many couples enter without fully understanding the consequences.
If you are combining households, sharing expenses, or purchasing property together, you’re likely wondering: should you create a cohabitation agreement before moving in?
Below, we walk through what changes legally when you move in together, what happens if you break up while living together, and how to make a cohabitation agreement that reflects your shared intentions.
Why Moving In Together Has Legal and Financial Consequences
Many couples assume that legal rights only arise after marriage. In reality, moving in together can create significant financial and legal implications — especially once you meet the definition of common law marriage under provincial law.
Across Canada, unmarried couples may acquire property rights, support obligations, or claims against each other after living together for a certain period of time or if they share children. The rules vary by province, but the financial impact can be real.
For example, you might be:
- Contributing to mortgage payments on a home you do not own
- Paying for renovations or shared assets
- Leaving full-time work to support the household
- Combining finances in ways that are difficult to untangle later
Without clear documentation, assessing the value of these contributions can become complicated if the relationship ends.
What Happens If You Break Up While Living Together?
Breaking up while living together can be emotionally and financially stressful.
Unlike married spouses, the rights of unmarried couples are not always automatically equal — particularly when it comes to property division. In some provinces, common law partners do not have the same statutory property division rights as married spouses. Instead, disputes may be resolved through equitable claims such as unjust enrichment or resulting trust.
That often means uncertainty, negotiation, and potentially litigation.
Questions that frequently arise include:
- Who keeps the home?
- How are joint purchases divided?
- Is either partner entitled to spousal support?
- What happens to shared debts?
When expectations are not clearly discussed in advance, disagreements can escalate quickly.
Does Living Together Create Common-Law Marriage?
The term “common law marriage” is widely used, but its legal meaning varies.
In Canada, you are not automatically “married” by living together. However, once you meet your province’s definition of common law — often after two or three years of cohabitation, or sooner if you have a child together — certain legal rights and obligations may arise.
These may include:
- Eligibility for spousal support
- Pension division rights
- Tax and benefit implications
Because the legal framework differs across provinces, it is important to understand how your location defines common law status.
What Is a Cohabitation Agreement?
So, what is a cohabitation agreement?
A cohabitation agreement is a written contract between unmarried partners that sets out how financial matters will be handled during the relationship and if it ends.
The purpose of a cohabitation agreement is clarity. It allows couples to proactively decide how property, debts, and support will be addressed — rather than leaving those decisions to default legal rules or future court proceedings.
A well-drafted cohabitation agreement can:
- Define ownership of property brought into the relationship
- Clarify how jointly purchased assets will be divided
- Address responsibility for debts
- Set out expectations around spousal support
- Protect business interests or inheritances
If you later marry, many provinces allow your cohabitation agreement to convert into a marriage contract.
What Does a Cohabitation Agreement Cover?
While each agreement should reflect your unique situation, common provisions include:
- Property division rules
- Treatment of the family home
- Savings, investments, and pensions
- Business ownership
- Debt allocation
- Spousal support terms
The key is customization. A cohabitation agreement should reflect your actual financial picture, not a generic template.
What a Cohabitation Agreement Cannot Cover
There are limits.
A cohabitation agreement generally cannot predetermine child custody or parenting arrangements. Courts must always consider the best interests of the child at the time of separation.
Agreements that are grossly unfair, signed under pressure, or created without proper financial disclosure may also be challenged.
Transparency and informed consent are essential to enforceability.
When Is a Cohabitation Agreement Especially Important?
While any couple can benefit from clarity, a cohabitation agreement is particularly important if:
- One partner owns a home
- One partner has significantly higher income or assets
- You own a business
- You expect an inheritance
- You are entering a second relationship
- One partner plans to step back from work
In these situations, the financial consequences of breaking up while living together can be significant.
Benefits of Creating a Cohabitation Agreement Before Moving In Together
Creating a cohabitation agreement before moving in together allows you to:
- Have thoughtful conversations about money and expectations
- Avoid misunderstandings later
- Reduce conflict if the relationship ends
- Protect assets while maintaining fairness
Most importantly, it provides certainty. Planning ahead does not mean you expect the relationship to fail. It means you value clarity and mutual understanding.
How to Make a Cohabitation Agreement Before Moving In
Many couples wonder how to make a cohabitation agreement and whether they need a lawyer for a cohabitation agreement.
Traditionally, each partner would retain a family lawyer to draft and negotiate terms. That approach offers individualized legal advice but can cost several thousand dollars. Today, there are more accessible options.
At jointly.ca, our cohabitation agreement platform was built by lawyers. The agreement builder is customized for your province’s laws and guides you step-by-step through financial disclosure, asset division, debt allocation, and support terms.
Unlike static templates, Jointly’s process adapts to your answers. It ensures your agreement reflects your specific circumstances — whether you are protecting a home, dividing future property, or addressing business interests.
After generating your agreement, you can obtain independent legal advice if desired, adding an extra layer of protection. This approach provides reliability and customization without the traditional cost barriers.
If you are planning to move in together, now is the easiest time to put an agreement in place. Starting early means decisions are thoughtful, collaborative, and calm — not rushed during conflict.
Ready to protect your future together? Create your personalized cohabitation agreement today at jointly.ca and move forward with clarity and confidence.
Related Articles From Our Learning Centre
If you are considering a cohabitation agreement, you may also find these helpful:
- Cohabitation Agreement vs Prenup: What’s the Difference?
- When Do You Become Common Law in Canada?
- Should I DIY Our Cohabitation Agreement?
- Voiding a Cohabitation Agreement: What You Need to Know
- How to Talk to Your Partner About Getting a Prenup
- Moving In Together? Should You Create a Cohabitation Agreement? - March 4, 2026
- What Are the Grounds for Divorce in Canada? - February 16, 2026
- Step parents rights and responsibilities in British Columbia - February 16, 2026
