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№ 22 Wills & Estates

Joint Ownership as Estate Planning in Ontario: Overlooked Risks

Considering adding a child or relative to title or an account in Ontario? See the risks: lost control, creditors, tax, disputes and the will.

Wills & Estates5 min readTSLBy the Treadstone Law Team · OntarioUpdated November 13, 2026
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Key takeaways
  • Adding someone as a joint owner can mean an asset passes to them by survivorship instead of into the estate, but with a joint bank account any named holder can withdraw at any time, and creditors could make claims on the money if one holder has financial problems or goes bankrupt.
  • Adding a child to capital property can be treated as a sale at fair market value for tax purposes, and the automatic rollover does not apply to children.
  • An adult child added to a parent's account or asset without paying for it is presumed to hold it in trust for the parent and, on the parent's death, for the estate.

Many families add a child or partner to a house or bank account to keep things simple. Joint ownership can do that, but it also has side effects people often overlook.

This article walks through the main risks so you can ask better questions before changing title. It is general information, and a lawyer and an accountant can look at your situation.

Why people use joint ownership, and what it really does

A person may convey property to themselves jointly with another person, which is how an owner can add a child or partner to title. Property held with a right of survivorship goes straight to the surviving owner and not into the estate.

It also overrides the will. A deceased joint tenant's interest goes to the surviving joint tenants and not to the will's beneficiaries. If your will says one thing and your title says another, the title can win for that asset.

Loss of control and exposure to creditors

On a joint bank account, any named holder can withdraw at any time. If one holder has financial problems or goes bankrupt, creditors could make claims on the money.

For land, any joint tenant or tenant in common may be compelled to make or suffer partition or sale, and any person interested may apply to the court for partition, or for sale if the court considers sale more advantageous. Adding a person to title can therefore leave your home exposed to that person's circumstances.

Where the property is a matrimonial home, a spouse generally cannot sell or mortgage an interest in it without the other spouse joining in or consenting, unless a separation agreement, a court order or a valid designation of another home applies.

Tax surprises

If you give capital property as a gift, you are considered to have sold it at fair market value when you give it, and you must report any capital gain for that year. The automatic rollover applies to gifts to a spouse or common-law partner, not to children, except for qualifying farm or fishing property.

At death, a person is considered to have sold all their capital property just before death, which may produce a capital gain on the final return, even if the property passes by survivorship. Property transferred to a surviving spouse or common-law partner who is resident in Canada can roll over without immediate gain in some cases, and some or all of the gain on a principal residence may be exempt.

On probate fees, jointly owned property that passes automatically to the other owner is not included in the estate value for estate administration tax. But a joint asset the survivor holds on resulting trust for the estate does not escape the tax. An accountant can explain how these rules interact for you.

Disputes, support claims and the matrimonial home

A later dispute often turns on whether the joint owner was meant to receive a gift, and the courts look at the evidence of what the person making the transfer intended at the time. The presumption of resulting trust is the general rule for gratuitous transfers, and the person receiving the transfer carries the onus of showing a gift was intended. An adult child added without paying is presumed to hold the asset in trust for the parent and, on death, for the estate. The presumption of advancement is confined to minor children, and an adult child's financial dependency does not trigger it, though it can be strong evidence against the resulting trust.

Courts can look at the bank wording, control and use of the funds, any power of attorney, tax treatment and later evidence about intention. Between spouses, property held in both names as joint tenants is proof, without evidence to the contrary, of an intention to own it jointly.

What to do next

Frequently asked questions

Does adding my child to title keep the asset out of probate?

Property that passes by survivorship goes straight to the surviving owner and not into the estate, but land in two names is held as tenants in common unless the deed shows on its face that the owners take as joint tenants, and a tenant in common's share does not pass by survivorship. Jointly owned property that passes automatically to the other owner is not counted in the estate value for estate administration tax. The trade-offs are the other risks in this article.

Will my child be treated as having received a gift?

Not necessarily. An adult child added to a parent's asset without paying is presumed to hold it in trust for the parent. The child bears the onus of showing a gift was intended.

Can creditors reach a joint account?

If one holder has financial problems or goes bankrupt, creditors could make claims on the money. A lawyer can advise on how that applies to your situation.

Is there a tax cost to adding a child to my house?

Giving capital property as a gift can be treated as a sale at fair market value, and you must report any capital gain for that year.

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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