Roxana Soica
Founder | Family Law Lawyer
Debt is often the overlooked side of division of property in an Ontario divorce — but it can be just as financially significant as the assets being divided. How debt is allocated between separating spouses, who is legally responsible to creditors, and how to protect yourself from a spouse’s financial obligations are critical issues that must be addressed strategically in any separation.
At Soica & Associates, our divorce debt lawyers help clients navigate this complex area with clarity, ensuring that the debt side of your division of property is handled as carefully as the asset side.
Under Ontario’s Family Law Act, debts are not divided between spouses the way assets are divided. Instead, debts are incorporated into each spouse’s Net Family Property (NFP) calculation — they reduce the value of the assets each spouse holds, and therefore affect the equalization payment. This is a critical distinction: the Family Law Act does not give a court the power to force a creditor to accept a new arrangement. What the court does is determine who, as between the spouses, bears the financial responsibility for debts in the internal equalization calculation.
The legal responsibility for debt after separation depends on whose name the debt is in — and this does not always align with who spent the money or benefited from it:
Joint financial exposure is one of the most urgent practical issues in any separation. Steps to protect yourself:

The mortgage on the matrimonial home is typically addressed as part of the home disposition decision — whether the home is sold, one spouse buys out the other, or it is transferred. The outstanding mortgage reduces the net equity available for division. If one spouse is taking over the property, the lender must agree to remove the other spouse from the mortgage — lenders are not bound by the separation agreement and will apply their own qualification criteria.
Personal credit card debt in one spouse’s name is their sole legal obligation. However, credit card debt incurred for family purposes that is held jointly means both spouses remain liable to the issuer regardless of internal agreements. Where one spouse continues to use a joint credit card after separation, the other remains exposed until the card is cancelled or the account separated.
Student loans are generally treated as individual debt — incurred for one spouse’s education and not a joint liability. However, if the other spouse supported the family financially while their partner completed their education, this may be relevant to a compensatory spousal support analysis.
Debts associated with a business owned by one spouse reduce the value of that business interest in the NFP calculation. The business is valued net of its liabilities for equalization purposes. Complex business debt situations — including personal guarantees given for corporate debt — require careful analysis by both a family lawyer and an accountant.
Personal income tax liabilities are individual debts that reduce the owing spouse’s NFP. However, joint tax filings, GST/HST issues, and corporate tax obligations connected to a jointly operated business may require more careful analysis. Unpaid tax debts can attract CRA collection action that affects both spouses — particularly if the CRA determines that property was transferred to defeat a tax debt.
Under section 5(6) of the Family Law Act, a court can make an unequal division of net family property if equal division would be unconscionable. One basis for a section 5(6) application is where a spouse has incurred debts or liabilities recklessly or in bad faith — for example, by deliberately running up credit card debt, dissipating assets, or transferring property to defeat the other spouse’s equalization claim — in anticipation of separation. This is a significant remedy when available and requires strong evidentiary support.
Debt issues resolved as part of a negotiated separation agreement: 3–8 months for most matters.
Contested equalization disputes involving significant debt: 12 months to 3+ years.
Urgency: Where a spouse is actively incurring joint debt or dissipating assets, urgent court motions may be required immediately.
Legal costs: Straightforward debt allocation in a separation agreement: often handled as part of the overall process. Contested equalization matters: significantly higher.
→ Addressing debt issues promptly and proactively at the start of the separation process minimizes financial exposure.
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It depends entirely on whether the debt is in your name, your spouse’s name, or held jointly. You are solely responsible for debt in your name, regardless of who benefited. Your spouse is solely responsible for debt in their name to the creditor, though it affects the equalization calculation. For joint debt, both spouses remain equally liable to the creditor regardless of any internal agreement — if your spouse doesn’t pay, the creditor can pursue you for the full amount.
Debts reduce your NFP — the net value of the property you accumulated during the marriage. If you have significant debts on the date of separation, your NFP is lower, which may reduce the equalization payment you owe (or increase the payment you receive). Debts you brought into the marriage on the date of marriage also reduce your NFP calculation. The equalization payment is then half the difference between each spouse’s NFP.
A joint mortgage remains both parties’ legal obligation until the property is sold or the mortgage is refinanced in one party’s name (with lender approval). A separation agreement can allocate responsibility for mortgage payments between the parties, but this does not affect the lender’s right to pursue both parties if payments are missed. If one spouse is taking over the property, the lender must qualify them independently for the refinanced mortgage.
A separation agreement can allocate responsibility for joint debt between the parties and include indemnification provisions, but it cannot change the legal obligation you have to the creditor. The practical protection comes from refinancing joint debts out of joint names where possible, closing joint accounts, and enforcing the indemnification if your spouse fails to pay a debt they have been allocated. Legal advice on debt management at the start of separation is strongly recommended.
If a spouse is incurring debt recklessly or in bad faith in anticipation of separation — for example, deliberately running up credit cards or transferring assets to defeat an equalization claim — this may be grounds for a section 5(6) application for an unequal division of property. In urgent cases, a court can also grant an order restraining asset dissipation. Contact a lawyer immediately if you suspect this is occurring.
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