What Happens to Debt When You Separate in Ontario?

When a relationship ends, most people picture splitting the house, the savings, maybe the pension. Debt rarely gets the same attention until the statements keep arriving and both names are still on them. In Ontario the rules for dividing debt depend on one thing first: whether you were married or living common-law. Get that wrong and you can end up paying for a loan you thought was someone else's problem.

Here is how debt actually gets handled when an Ontario couple separates, and the one mistake that catches people every time.

How debt works for married spouses

For married spouses, debt does not get divided on its own. It gets folded into the equalization calculation under Ontario's Family Law Act. Equalization is the process that compares what each spouse is worth and evens out the difference.

The math runs on each spouse's net family property. You take what you own on the valuation date, normally the day you separated, and subtract what you owe on that same date. The debts you carry on separation day, the mortgage balance, the credit cards, the car loan, the line of credit, reduce your net family property dollar for dollar. Debts you brought into the marriage on the marriage date are factored in too, so a spouse who walked in carrying student loans is not penalised for paying them down during the relationship.

Once each spouse's net family property is calculated, the one with the higher number pays the other half the difference. That payment is the equalization payment. Debt shapes the number on both sides, but it is the net difference that gets shared, not the individual loans.

If you want to see roughly where you would land, try the equalization calculator, then read the deeper breakdown in how equalization works.

The mistake almost everyone makes

This is the part people miss, and it costs them. A separation agreement or a court order divides responsibility for debt between the two of you. It does not bind the bank.

Say your agreement says your ex takes the joint line of credit. Good. But the lender was never a party to that agreement. If both names are on the account and your ex stops paying, the bank comes after you for the full balance, and your credit score takes the hit. The agreement gives you the right to chase your ex for what they owe you, but it does nothing to stop the lender from collecting from whoever is on the contract.

So the agreement is step one. Step two is closing or refinancing every joint account. Move a joint loan into one spouse's name through a refinance, cancel joint credit cards, and split or close the joint line of credit. Until the lender removes your name, you are still on the hook no matter what the paperwork between you says.

What counts as your debt versus shared debt

A debt with your name alone on it stays yours. A debt with both names on it is a joint debt, and the lender can collect the full amount from either of you. That is true even if only one spouse ran up the balance.

This is where good records matter. To run the equalization math properly, both spouses have to lay out every asset and every debt on the valuation date. Hiding a loan or guessing at balances leads to a wrong number and an agreement that can be reopened later. The page on financial disclosure walks through what each side has to produce.

Are debts split fifty-fifty in Ontario?

No. Equalization shares the net difference in what each spouse is worth, which is not the same as cutting every debt in half. If one spouse has a far larger net family property even after debts, that spouse pays an equalization amount, and the loans themselves stay with whoever signed for them.

There is also a floor. If your debts are bigger than your assets, your net family property cannot drop below zero. Section 4(5) of the Family Law Act stops a negative number. You do not get credited for being deep in debt, and your spouse is not required to take on half of it through the equalization formula.

What about common-law partners?

Equalization is for married spouses only. Common-law partners in Ontario do not equalize property or debt when they separate. Each partner keeps what is in their own name and stays responsible for their own loans.

That does not leave a common-law partner with nothing. Where one partner contributed to property or paid down a debt that built the other's wealth, there can be a claim, usually for unjust enrichment, to recover that contribution. Joint debts still bind both partners to the lender exactly the same way, married or not. If your name is on the loan, the bank can collect from you.

What to do right now

Pull a copy of every account and write down who is named on each one. Order your credit report so nothing is missed. Stop adding to joint accounts. Then get the responsibility for each debt nailed down in writing, and close or refinance the joint accounts so the lender can no longer come after you.

The cleanest way to lock all of this down is a separation agreement that sorts the debts alongside support, parenting, and property in one document.

How Ryan helps

Ryan Manilla handles separation and the debt that comes with it for clients across Toronto and the GTA. He builds a separation agreement that divides responsibility for every debt cleanly and tells you which joint accounts have to be closed or refinanced so a lender cannot chase you for your ex's share later.

The fee is flat, quoted up front, so you know the cost before you commit, and the first consultation is free. Book your free consultation and get a straight answer on where you stand with the debt.