Joint Mortgages Explained

Most homes in Ontario today are bought by two people, not one — and that usually means a joint mortgage. Combining your incomes can dramatically increase what you can afford, but it also ties your finances together in ways worth understanding before you sign. This guide explains how joint mortgages work, the difference between joint tenancy and tenants in common, and what happens if a relationship or partnership ends.

Key takeaways

• A joint mortgage combines two or more applicants' incomes, boosting how much you can borrow.
• Everyone on a joint mortgage is fully responsible for the entire debt, not just their share.
• Joint tenancy and tenants in common are two different ways to hold ownership — choose deliberately.
• All co-borrowers must pass the stress test, and the combined debt ratios still apply.
• HOMEH gives eligible buyers the industry's highest Cashback Rebate, which both partners can put toward the purchase.

What is a joint mortgage?

A joint mortgage is a single home loan held by two or more people — most often spouses or partners, but sometimes siblings, friends, or a parent and adult child. The lender assesses everyone's combined income, credit, and debts, which typically lets the group qualify for more than any one of them could alone.

The flip side: every borrower is jointly and severally liable. That means the lender can pursue any one of you for the full balance, not just your portion. If you're new to home financing, start with our guide to how mortgages work in Canada for the fundamentals.

Why buy together? The affordability boost

The main reason couples and partners take out a joint mortgage is buying power. Two incomes mean more room within the lender's debt service limits — Gross Debt Service at or below 39% and Total Debt Service at or below 44% of gross income. Here's a simplified illustration of how combined income changes the picture.

Want your real number? Run both incomes through the HOMEH affordability calculator.

Joint tenancy vs tenants in common

How you hold title is a separate decision from the mortgage itself, and it matters a lot — especially if one owner dies or the group splits up.

Get legal advice on title

Your real estate lawyer registers how you hold title. Decide between joint tenancy and tenants in common before closing — changing it later means extra legal work.

How lenders assess a joint application

A joint mortgage isn't automatically easier to get. The lender looks at the whole group: combined income helps, but a weak credit score or high debt load on any one applicant can drag down the application. Every borrower must also pass the federal mortgage stress test — qualifying at the greater of the contract rate plus 2% or 5.25%.

A joint mortgage is distinct from co-signing a mortgage: co-borrowers on a joint mortgage are buying and owning the home together, while a co-signer typically lends their financial strength without intending to live there.

What happens if things change?

Life changes — relationships end, partners want out, or one person wants to buy the others out. Because everyone is fully liable, you can't simply walk away from a joint mortgage. Common paths forward include:

• Refinancing so the remaining owner takes on the mortgage alone (they must requalify).
• Selling the property and splitting the proceeds.
• Buying out the departing owner, often funded by a refinance.

Whatever the route, the mortgage usually has to be refinanced or discharged, which can trigger penalties. Our guide to mortgage penalties explains how to avoid surprises.

How HOMEH helps couples buy together

Buying together is a big step, and the costs add up fast. HOMEH is a licensed Ontario brokerage that gives eligible buyers the industry's highest Cashback Rebate — money two partners can put straight toward their down payment or closing costs. Sellers list for 1%, or free when they also buy with HOMEH within 6 months, or $395 + HST with a Mere Posting. Estimate yours with the cashback calculator, then run the numbers on your joint purchase.