Divorce can make an already complicated mortgage decision even harder. If you locked in a low rate a few years ago, selling your home or refinancing could mean giving up that rate and taking on a much more expensive mortgage. Knowing how to go about sharing a low-rate mortgage after divorce, whether through an assumption, an insured buyout, or tax strategies, could save tens of thousands of dollars in interest.
So, what happens to the mortgage when a marriage ends? Here’s what separating spouses in Ontario need to know about the legal process and financial risks of keeping or changing the existing loan.
Why the Mortgage Rate Itself Has Become a Negotiable Asset
When a marriage or common-law relationship ends, the matrimonial home is often both the largest shared asset and the largest shared debt. Separating spouses have to decide whether to sell the home, refinance so one spouse can buy out the other, or have one spouse formally assume the existing mortgage.
Refinancing terminates the existing mortgage contract and replaces it with a new loan at the prevailing rate. If a fixed-rate mortgage is broken before the end of its term, the borrower will typically face a prepayment penalty equal to the greater of three months’ interest or the Interest Rate Differential (IRD). For a large balance with several years remaining, the IRD can become costly because it is designed to compensate the lender for the interest income lost when the mortgage is paid out early.
An assumption can avoid that reset. If the lender approves the transfer to a single borrower, the existing contract, rate, and remaining amortization can continue. That can give a below-market mortgage meaningful financial value. During a separation, the spouse keeping the home is not simply retaining the property. They may also be retaining years of interest savings, which can become a factor in negotiating the broader financial settlement.
Mortgage Assumptions: What’s Transferable
The lender must formally approve the transfer, and if the mortgage is insured, the default insurer may also need to approve it. Whether the transfer is possible also depends on how the mortgage is registered on the title.
Qualifying To Assume Solo
The spouse taking over the mortgage has to qualify on a single income, under the same standards as any other borrower:
- Debt service ratios: Lenders use a 39% Gross Debt Service (GDS) limit and a 44% Total Debt Service (TDS) limit, factoring in mortgage payments, property taxes, heating costs, and other debt obligations. Spousal or child support received may count toward qualifying income when it is supported by a formal separation agreement, while support payments you make are treated as a debt obligation.
- The stress test: For an uninsured mortgage, borrowers generally have to qualify under the mortgage stress test at the higher of their contract rate plus 2% or 5.25%.
- Credit score: Canada Mortgage and Housing Corporation (CMHC) requires a minimum credit score of 600 for at least one borrower on an insured mortgage. Individual lenders may set higher standards, particularly for uninsured mortgages or products with a collateral charge.
The Release of Covenant
An assumption changes who makes the mortgage payments. It does not automatically remove the departing spouse’s legal liability for the debt. If your name comes off the title but the lender has not issued a formal, written Release of Covenant, you could still be responsible if your former spouse defaults.
The mortgage may also continue to affect your credit report and borrowing capacity, making it harder to qualify for another home. For this reason, family law counsel should make the title transfer conditional on the lender providing the release in writing.
When Assumption Isn’t Enough: The 95% Insured Spousal Buyout
An assumption does not give the spouse keeping the home extra money to pay out their former partner. The existing mortgage balance stays the same, so the remaining spouse needs enough cash or other available funds to cover the buyout. A standard refinance generally caps borrowing at 80% of the home’s value, which may not leave enough room to cover both the existing mortgage and the departing spouse’s share.
A spousal buyout program can help bridge that gap. CMHC, Sagen, and Canada Guaranty offer insured financing programs that can treat a qualifying buyout as an insured purchase of the departing spouse’s equity. Financing can reach 95% loan-to-value, potentially making it possible to keep the home without giving up a valuable existing mortgage rate.
Tax Tools That Can Shrink Your Mortgage
The less you need to borrow, the easier it is to preserve a low rate. Two federal mechanisms are specifically built for this situation.
The Home Buyers’ Plan (HBP)
While the plan requires participants to meet the first-time home buyer rules, the Canada Revenue Agency (CRA) provides an exception for people who are living separate and apart because of a marriage or common-law relationship breakdown.
The current HBP limit is $60,000, and qualifying withdrawals are generally repaid over 15 years. CRA also specifically allows the previous-home disposal requirement to be waived when the individual uses the HBP to acquire their former spouse’s or common-law partner’s share of the residence.
Tax-Adjusted Asset Offsetting
Instead of borrowing more, spouses can offset home equity against other marital assets, including Registered Retirement Savings Plans (RRSPs), pensions, and investments. Principal residence equity is generally realized tax-free, while RRSP withdrawals are taxable later, so $100,000 in an RRSP may be worth less than $100,000 in home equity.
Registered assets can generally be transferred between spouses on a tax-deferred basis through the CRA, including using Form T2220 where applicable. The receiving spouse should account for the taxes they may eventually pay when valuing the asset. Couples may also deduct a notional 5% for potential disposition costs when dividing home equity, helping avoid a situation where one spouse bears all of the costs if the home is eventually sold.
Land Transfer Tax (LTT)
In Ontario, property transfers between spouses or former spouses made under a written separation agreement are exempt from provincial LTT, including any amount paid to buy out the other spouse’s share as specified in that agreement.
The Risk of Staying Co-Owners Just to Keep the Rate
Some couples try to preserve a low rate by simply staying on the mortgage together after separating. In Ontario, both spouses hold an equal right to possession of the matrimonial home under the Family Law Act regardless of whose name is on title, but continuing to co-own carries real exposure:
- Joint and several liability. The lender can pursue either spouse for 100% of the debt. If the occupying spouse misses a payment, both credit scores take the hit.
- Occupation rent disputes. If one spouse lives in the home while the other keeps paying half the mortgage, courts may need to decide whether the occupying spouse owes rent to the non-occupying one.
- Frozen borrowing capacity. If the non-occupying spouse is still tied to the joint mortgage, it can make qualifying for a new home much harder.
- Forced sale exposure. Under Section 2 of Ontario’s Partition Act, any co-owner can apply to force a sale, and courts usually grant it unless the request is malicious or unconscionable. A forced sale means paying out the existing mortgage and any applicable prepayment costs, potentially wiping out the low-rate advantage the couple was trying to preserve.
Next Steps for Divorcing Homeowners
Sharing a low-rate mortgage after divorce can preserve significant interest savings, but the arrangement must protect both spouses from future liability. Before finalizing a separation agreement, have a family lawyer and mortgage professional review the mortgage structure and financing options.
If a buyout or assumption isn’t the right fit for your situation, Zoocasa can help you find what’s next. Start your home search today.
