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Student Loans and Separation in Ontario: Who Owes What?

Find out how a student loan is treated in an Ontario separation: whether it counts as a debt in equalization, and how it can matter for support.

Family Law5 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • Married spouses calculate net family property by subtracting debts and liabilities from the value of their property.
  • Debts such as credit cards, car loans and mortgages are subtracted when each spouse's share is calculated.
  • The person claiming a deduction bears the onus of proving it, so keep your loan records.
  • Unmarried partners are not spouses for equalization, so this calculation does not apply to them.

Many people come out of a relationship with student debt, whether it was taken on before the relationship began or while you were together. It is natural to ask whether your ex now owes part of it, or whether you will be asked to share theirs.

The answer depends on whether you were married, when the debt was taken on, and what else you own and owe. This article explains the general rules in Ontario and how debt can also come up when support is discussed.

Married or common-law: which rules apply

Ontario's property equalization system applies to spouses who are married to each other. Unmarried (common-law) partners are not spouses for the purposes of equalization.

Common-law couples are not legally required to split property acquired while living together, though they may choose a cohabitation agreement or separation agreement instead. How a student loan is treated if you were not married depends on your situation, so it is worth confirming with a lawyer.

How debts count in equalization

When a marriage ends, the spouse whose net family property is lesser is entitled to one-half of the difference between the two net family properties. Net family property is the value of all property (except excluded property) a spouse owns on the valuation date, less debts and liabilities and the net value of property owned on the date of marriage.

The valuation date is, first, the date the spouses separate with no reasonable prospect of resuming cohabitation. Debts such as credit cards, car loans and mortgages are subtracted when calculating each spouse's share. A student loan is a debt in the ordinary sense, so it is generally the kind of liability you would raise as a deduction. How a particular loan, including an OSAP loan, is treated depends on the facts, and a lawyer or accountant can confirm it.

This is not the same as splitting the loan. Equalization is about the difference between the spouses' overall net positions. A debt usually lowers the net family property of the person who owes it, which can reduce what that person owes or increase what they receive. Your ex does not usually become the borrower on your loan.

Debt from before the marriage versus during it

Timing matters. The calculation also subtracts the net value of property owned on the date of marriage. Property owned before the marriage is usually shared only for any increase in value.

For debts, the questions people usually ask are these: was the loan already there on the wedding day, how much is owing on the valuation date, and did the loan pay for something that increased in value? Your answers affect how the numbers fit together, so gather the dates and balances.

SituationWhat to ask
Loan taken before marriageWhat was owing on the wedding date, and what is owing on the valuation date?
Loan taken during marriageIs it a debt or liability on the valuation date?
Not marriedEqualization does not apply, so check your agreement and speak to a lawyer

The person claiming a deduction or an exclusion bears the onus of proving it. That means statements, loan agreements and balance records are important evidence.

Student debt and support

Debt can also come up when support is discussed. Spousal support is not automatic. You may qualify if you were married, lived together as a couple for at least three years, or had a child together in a relationship of some permanence, and you show a need and the other spouse's ability to pay.

Amount and duration are set by negotiation in a separation agreement or by a judge, considering income difference, child care, age and health, and roles in the relationship. Child support looks at each parent's current and future means, capacity to contribute, age and health, and accustomed standard of living. Loan payments are part of a person's financial picture, but how much weight they receive in a given case depends on the facts. A lawyer can tell you how they may be treated in yours.

Misconduct is not part of the equation. A court making a spousal support order shall not take into consideration any misconduct of a spouse in relation to the marriage.

What to do next

Put the paperwork together early, because you will need to prove what you claim. If you reach an agreement, both partners must sign in front of a witness, and the witness must also sign. Equalization claims also have time limits: you have six years from separation or two years from the divorce being final, whichever comes first.

Frequently asked questions

Do I have to pay my ex's student loan?

Not in the sense of becoming the borrower. For married spouses, debts are subtracted when each spouse's net family property is calculated. That can affect the equalization payment, but the loan itself generally remains with the person who borrowed it.

Does a student loan from before the marriage count?

The calculation subtracts debts and liabilities and also the net value of property owned on the date of marriage. How a pre-marriage loan fits depends on the amounts and dates, so a lawyer or accountant should review it.

What if we were never married?

Unmarried partners are not spouses for equalization. Common-law couples are not legally required to split property acquired while living together, though they may use a cohabitation or separation agreement.

Do I need proof of the debt?

Yes, the person claiming a deduction or exclusion bears the onus of proving it. Loan statements and dates are the usual starting point.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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