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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Family Law & Divorce Ontario » Can a Stay-at-Home Spouse Claim a Constructive Trust on a Professional Degree in Ontario?

Can a Stay-at-Home Spouse Claim a Constructive Trust on a Professional Degree in Ontario?

9 Jul 2026 5 min read No comments Family Law & Divorce Ontario
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Under Ontario family law, a professional degree is not considered divisible family property. Based on the landmark case Caratun v. Caratun, a stay-at-home spouse cannot claim a constructive trust over a medical or law degree, but they may be entitled to compensatory spousal support instead to reflect their financial sacrifices.

When a couple divorces, dividing assets like the family home or bank accounts is relatively straightforward. ㊨ But what happens when the most valuable “asset” acquired during the marriage is a spouse’s professional education? Many stay-at-home spouses in Ontario sacrifice their own careers, work multiple jobs, and take on the entirety of parenting time to put their partner through medical, law, or dental school. When the marriage ends just as the lucrative career begins, it can feel incredibly unjust.

Generally, family law in Ontario operates under the Family Law Act to divide the value of net family property. However, professional degrees present a unique legal challenge. Some spouses attempt to claim a “constructive trust” over the degree, arguing that they own a piece of the professional licence due to their contributions. This article will explain why Ontario courts reject this specific property claim and what legal avenues are actually available to ensure you are fairly compensated.

What is a Constructive Trust and How Does it Apply in Ontario?

A constructive trust is a legal remedy used by courts to prevent “unjust enrichment.” ⚖ It occurs when one person contributes significantly to the value of an asset owned by another person, and there is no legal reason (like a contract or a gift) for the owner to keep all the benefit. For example, if you personally spent 1,000 hours renovating a cottage owned solely by your spouse, a judge at the Superior Court of Justice might grant you a constructive trust, giving you a percentage of the cottage’s value.

However, applying a constructive trust to a professional degree is entirely different. A degree is a personal achievement. It cannot be sold, transferred, or divided on the open market. This fundamental difference forms the basis of how Ontario courts handle these disputes.

The Rule from Caratun v. Caratun: Degrees Are Not Property

The definitive answer in Ontario comes from the landmark Court of Appeal case, Caratun v. Caratun. 📄 In this case, a wife worked tirelessly to support her husband while he attended dental school in Toronto. Just two days after he obtained his licence to practise dentistry, he asked for a divorce. The wife sought a property interest in his dental licence, arguing unjust enrichment.

The Ontario Court of Appeal ruled explicitly that a professional degree or licence is not property and therefore cannot be subject to a constructive trust or divided under the Family Law Act. The court reasoned that a licence is personal to the holder and its future value is too speculative to calculate as a divisible asset at the date of separation.

Step-by-Step Process: Seeking Compensation for Supporting a Spouse’s Education

Just because you cannot claim a constructive trust over the degree itself does not mean you walk away empty-handed. 💰 Ontario family law uses compensatory spousal support to remedy this exact injustice. If you live in Ottawa, London, or Toronto and supported your spouse through school, here is the process to secure your financial rights.

Step 1: Establishing the Unjust Enrichment in the Marriage

Your law firm will first build a case proving your sacrifices. You will need to show that you deferred your own education, paid the household bills, or took on 100% of the decision-making responsibility for the children so your spouse could study. You must demonstrate that your spouse received a financial benefit (the degree) while you suffered a corresponding deprivation (lost career progression).

Step 2: Filing an Application for Compensatory Spousal Support

Instead of claiming property, you will file an Application (Form 8A) at the Superior Court of Justice for spousal support. 📝 The Spousal Support Advisory Guidelines (SSAG) recognize “compensatory” support. This type of support is designed specifically to compensate a spouse for the economic consequences of the marriage, including putting a partner through school.

Step 3: Calculating Support Based on the Professional’s New Income

The court will look at your spouse’s current, lucrative professional income. Because they are now a practising doctor or lawyer, their income for support purposes will be much higher. The SSAG formulas will yield a higher monthly support payment, effectively giving you a share of the financial success you helped build, paid out over time rather than as a lump sum property division.

Step 4: Negotiating a Disproportionate Division of Other Assets

Sometimes, spouses will reach a settlement where the supporting spouse receives a larger share of the existing physical assets (like taking full ownership of the house) in exchange for lower monthly spousal support. 🏠 A local family lawyer can help structure a Separation Agreement that guarantees your financial security.

Financial Costs of Litigating Spousal Support in Ontario

Pursuing a strong compensatory spousal support claim requires gathering evidence and expert legal advocacy. Here are the typical costs associated with these cases in Ontario:

Superior Court Filing Fee$214 to $669 CAD
Initial Retainer for a Family Law Firm$3,500 to $7,500 CAD
Drafting a Separation Agreement$2,500 to $5,000 CAD
Full Court Trial (if unresolved)$20,000 to $50,000+ CAD

General Timelines in the Superior Court of Justice

If you and your former spouse agree on the compensatory nature of the support, a customized Separation Agreement can be negotiated in 3 to 6 months. 🕑 However, professionals sometimes fiercely contest spousal support, arguing they earned the degree solely through their own merit. If litigation is required, reaching a final trial in an Ontario court can take 1.5 to 2.5 years due to current scheduling backlogs.

Frequently Asked Questions (FAQ)

What is the difference between compensatory and non-compensatory spousal support?

Compensatory support repays a spouse for economic sacrifices made during the marriage (like paying for tuition). Non-compensatory support is based purely on financial need and the other spouse’s ability to pay.

Does the Caratun rule apply to business licences too?

Generally, yes. Professional licences (like a real estate or plumbing licence) are not divisible property, but the actual business or corporation built around that licence can be valued and divided.

Can I get a lump sum spousal support payment instead of monthly?

Yes, it is possible. Ontario courts can order lump sum spousal support in specific circumstances, especially if there is a risk the paying spouse will default on monthly payments.

What if my spouse hasn’t graduated yet when we separate?

If they are still a student, they may not have an income to pay support immediately. However, your lawyer can file to have support reviewed or initiated once they secure employment in their field.

Should I hire an Ontario lawyer to handle this?

Absolutely. Constructive trust claims and compensatory spousal support are highly complex areas of family law that require experienced legal counsel.

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