Buying a House With a Partner: What to Know

Buying a home with a partner is one of the biggest financial decisions a couple can make together. Two incomes can dramatically expand what you can afford — but a shared mortgage and shared title also mean shared risk. Whether you're married, common-law, or buying with a friend, getting the ownership structure and the money conversation right from the start protects both of you. Here's what every couple should know before buying a house together in Ontario.

Key takeaways

• Two incomes increase your borrowing power, but lenders assess both partners' credit and debts together.
• In Ontario you can hold title as joint tenants or tenants in common — the choice affects what happens if one of you dies or you split.
• A cohabitation or co-ownership agreement spells out who paid what and how the home is divided if the relationship ends.
• Both partners' debts count toward your combined GDS and TDS ratios.
• Eligible HOMEH buyers receive the industry's highest Cashback Rebate on their purchase.

How two incomes change your budget

The biggest advantage of buying together is borrowing power. Lenders look at your combined income when sizing your mortgage — but they also look at both partners' debts and credit. The key measures are your debt service ratios: lenders generally want your housing costs (GDS) at or below 39% of gross income and your total debts (TDS) at or below 44%.

One partner's car loan or student debt can pull your combined ratios up, so it pays to review both financial pictures early. See exactly how lenders crunch the numbers in our guide on how much house you can afford, then run your own figures with the affordability calculator.

Credit is the other half of the picture. Lenders look at both partners' credit scores, and the stronger profile doesn't simply average out the weaker one — a low score on one application can affect the rate you're offered or even whether a lender will approve you. Before house-hunting, pull both credit reports, clear up any errors, and pay down high-interest balances. A few months of clean credit and lower debt can noticeably improve both your approval odds and your interest rate, which over a 25-year amortization is worth a great deal of money.

How to hold title together

In Ontario, two people can hold title to a home in two main ways, and the difference matters most if one of you dies or you part ways.

• Joint tenants — you both own the whole property equally, and if one partner dies, their share passes automatically to the other. This is common for married couples.
• Tenants in common — each of you owns a defined share (for example 60/40), and your share passes through your will rather than automatically to the other. This suits unequal contributions or buying with a friend or family member.

Talk to your lawyer about title

Your real estate lawyer registers how you hold title at closing. Decide between joint tenancy and tenancy in common before that point — changing it later means more paperwork and possible cost.

The choice matters most in the situations no one likes to picture. With joint tenancy, if one partner passes away the home transfers automatically to the survivor, bypassing the estate — simple and clean for a committed couple. With tenancy in common, each person's share follows their will, which is essential if you've contributed unequally or want to leave your share to a child from a previous relationship. There's no universally 'right' answer; the right one depends on your relationship status, your contributions, and your estate wishes. A short conversation with a lawyer before closing settles it.

Protecting yourselves: the money conversation

Even the strongest relationships benefit from a clear written agreement. A cohabitation agreement (for unmarried couples) or a co-ownership agreement records who contributed what to the down payment, how mortgage and bills are split, and what happens to the home if you separate. It's not pessimism — it's the same logic as insurance.

Have the practical conversations early too: How much can each of you comfortably contribute monthly? Whose name carries the mortgage if one credit profile is stronger? Who pays the closing costs? Budget for those one-time costs using our breakdown of closing costs in Ontario so there are no surprises on closing day.

It also helps to agree on the day-to-day money management before you move in. Will you open a joint account for the mortgage and household bills? How will you handle a stretch where one of you earns less — say during parental leave or a job change? Couples who treat the home purchase as a shared project, with open numbers and a written record of who put in what, tend to avoid the resentment that quietly builds when money is assumed rather than discussed. None of this is unromantic; it's the foundation that lets you enjoy the home without financial friction.

Buying together, step by step

Once you've aligned on budget, title and contributions, the buying process is the same as for any purchase: get pre-approved, set your must-haves, tour homes, and make an offer. Our pillar guide walks through every stage in how to buy a house in Ontario. If you're not sure whether buying beats renting for your situation, compare the math first.

Double your buying power, then add cashback

On top of your combined income, eligible HOMEH buyers receive the industry's highest Cashback Rebate on their purchase. Estimate yours with the cashback calculator, then start touring on the HOMEH listings page.