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Can a Tenant in Common Be Forced to Pay Their Share of Costs in Ontario?

If you pay the whole mortgage, taxes and repairs on a co-owned Ontario property, learn how shares, mortgage liability and a forced sale work.

Real Estate4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
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Key takeaways
  • Co-owners who sign a mortgage together are each generally liable for the whole debt, whatever their ownership shares.
  • Land granted to two or more people is held as tenants in common unless the document shows a joint tenancy.
  • A co-owner can generally apply to the court for partition or sale, and the court has refused only in narrow circumstances.

You are paying the mortgage, the property taxes and the repairs on a property you own with someone else, and the other owner is not contributing. You may be wondering whether you can make them pay, or whether your share should change.

This article explains how co-ownership works in Ontario and where the law stops. How to recover what you have paid depends on your agreement and your facts, so a lawyer should review your situation before you act.

What being a tenant in common means

Unless the document shows an intention to create a joint tenancy, land granted to two or more people goes to them as tenants in common. This applies even if they are spouses. Each owner holds a share, and there is no right of survivorship on a tenancy in common.

If the owners did not hold title as tenants in common from the start, a joint tenant can sever the joint tenancy alone by signing and registering a transfer to themselves, without the other owner's consent. The exception is a matrimonial home: a spouse may not dispose of or encumber an interest in it unless the other spouse joins or consents, has released their rights by separation agreement, or a court order authorizes it. In the land titles system the transferee is then shown as a tenant in common with the other owners, and survivorship ends for that share.

Why you may be on the hook for the whole mortgage

Where there are several chargors, the covenants in a registered charge, including paying the mortgage money, are made jointly and severally unless the charge says otherwise. Each co-owner can therefore be liable for the whole debt. That is why the lender can look to you when the other owner does not pay.

If payments fall behind, the default must continue for at least 15 days before power of sale notice is given, and a sale cannot happen until at least 35 days after notice. A mortgagor may cure a default by paying the amount due. During the notice period, no further proceeding to enforce the mortgage may be started without a Superior Court of Justice judge's order.

Recovering what you paid and adjusting shares

Many co-owners have a written agreement covering shares, expenses, buyouts, rights of first refusal and what happens on death. These terms are matters of contract, so the wording of your agreement matters most. If you have none, whether and how you can recover the extra amounts you paid, or adjust the shares, depends on the facts and is something a lawyer should confirm.

When a forced sale is the option

Joint tenants and tenants in common may be compelled to make or suffer partition or sale of the land. Any person interested in land in Ontario may bring an action or application for partition, and the court may order a sale instead if that is more advantageous.

The Court of Appeal for Ontario holds that co-owners have a prima facie right to force a sale. The party resisting must show why the property should not be sold, and the court refuses only if the applicant is acting maliciously, vexatiously or oppressively. In Inniss v. Blackett, age, illness and claimed hardship were not enough.

Spouses and the matrimonial home

A spouse may not dispose of or encumber an interest in a matrimonial home unless the other spouse joins or consents, has released their rights by separation agreement, or a court order authorizes it. A transaction in breach may be set aside. How a sale or partition application fits with a separation or other family law matters depends on your situation, so it is worth confirming with a lawyer before starting one.

What to do next

Frequently asked questions

Can the lender come after me if my co-owner stops paying?

Generally yes. Unless the charge says otherwise, co-owners who sign it are jointly and severally liable, so each can be liable for the whole debt.

Can I force my co-owner to sell?

A co-owner can apply for partition or sale, and the court may order a sale instead. The court refuses only if the applicant is acting maliciously, vexatiously or oppressively.

Does my share change because I pay more?

It depends on your agreement and the facts. Terms about shares and expenses are matters of contract, so a lawyer should review them.

What if we inherited the property together?

Where the land passed by will or on intestacy, no partition proceeding may be taken until one year after the death.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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