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Can a Joint Owner Who Caused a Death Still Take by Survivorship?

Learn how survivorship works in Ontario joint tenancy, what the Court of Appeal said about a person who kills a co-owner, and when to get legal advice.

Wills & Estates4 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • Property held in a joint tenancy normally passes automatically to the surviving owner when one owner dies.
  • Ontario's Court of Appeal has noted the general principle that a person who kills another should not profit from the crime, with exceptions such as mental disorder.
  • In one case, a person found not criminally responsible on account of mental disorder was not prevented from taking by survivorship or under insurance.
  • The order of deaths can matter: in one case, the timing of a death relative to the destruction of the home raised a triable issue about insurance proceeds.

When a home or bank account is jointly owned and one owner dies at the hand of the other, families are often shocked to learn that the ordinary rules of survivorship seem to point toward the person who caused the death. It is natural to ask whether that person can really keep the house, the account or the insurance money.

This article explains, in general terms, how survivorship works in Ontario and what the Court of Appeal for Ontario has said about a killing between joint owners. The answer depends heavily on the facts, including the criminal outcome, so this is a starting point for a conversation with a lawyer and not a prediction.

How survivorship normally works

If you own property as a joint tenant in Ontario, the property automatically passes to the surviving owner when you die. The Court of Appeal has described survivorship as the critical distinction between a joint tenancy and a tenancy in common, where a deceased owner's share instead passes to the estate.

Because survivorship applies only to interests held in a joint tenancy, property that does not pass that way goes to the deceased's personal representative. A will cannot by itself end a joint tenancy, and survivorship takes precedence over a will. That is why a family cannot simply point to the will of the person who died to redirect a jointly held home.

The principle that a person should not profit from a killing

The Court of Appeal for Ontario has noted the general principle that a person who kills another should not profit from the crime, and that there are exceptions, such as mental disorder. In plain words, the law is uncomfortable with letting a wrongdoer benefit from a death they caused.

This article confirms that principle and one exception. It does not set out a full Ontario rulebook for every kind of unlawful killing, such as how a conviction for murder, manslaughter or another offence would affect a joint tenancy. A lawyer can confirm how the principle applies to a particular set of facts.

The mental disorder exception

In one Court of Appeal decision, a person found not criminally responsible on account of mental disorder for killing a spouse was not prevented from taking under insurance or by right of survivorship. The court treated mental disorder as an exception to the general principle.

This does not mean every case turns out the same way. It shows that the criminal finding matters, and that a person found not criminally responsible is treated differently from the general principle.

QuestionWhat the Court of Appeal said
Is there a general principle against profiting from a killing?Yes, the court noted it, with exceptions such as mental disorder.
Can survivorship still apply after a finding of not criminally responsible?In that case, the person was not prevented from taking by survivorship or under insurance.
Does a will change who takes jointly owned property?Not by itself, because survivorship takes precedence over a will.

Why the order and timing of deaths matter

In the same case, timing mattered. The court found a triable issue about whether the wife's estate had an interest in the insurance proceeds, including contents, separate from the house, if she died after the home was destroyed. In other words, the sequence of events can affect what belongs to whom.

If the facts include a fire, a sale, a mortgage or any other event around the time of death, tell your lawyer about all of it. Details that seem minor to a family can decide which rule applies.

What families can do next

Do not rush to move out, sell, cancel insurance or sign anything with the surviving owner while the legal position is unclear. Instead, organize the information a lawyer will need.

If the property does not pass by survivorship, it goes to the deceased's personal representative, and Ontario says an application for probate may be needed when real property does not pass by right of survivorship. A lawyer can tell you which path applies.

Frequently asked questions

Does a joint owner automatically get the property after the other dies?

In a joint tenancy, yes, the property normally passes automatically to the surviving owner. Where the owners held as tenants in common, the deceased's share goes to the estate instead.

Can a will stop the surviving joint owner from taking?

Not by itself. A will cannot sever a joint tenancy, and survivorship takes precedence over a will.

Is there any case where a person who caused a death still took by survivorship?

Yes. In one Court of Appeal decision, a person found not criminally responsible on account of mental disorder was not prevented from taking by survivorship or under insurance.

Should we apply for probate in this situation?

It depends on how each asset was held. Ontario lists real property that does not pass by right of survivorship as a reason to apply, so a lawyer should review the title and accounts first.

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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