The Risks of Adding an Adult Child to Your Home Title or Bank Account in Ontario

It feels like a natural solution. You are getting older, you want to make things easier for your children when you are gone, and someone tells you: "Just put your child's name on the house. When you die, they get it without probate." The advice is not entirely wrong — it can work. But it routinely creates problems that cost far more than the probate fees it was meant to save.

Adding an adult child to the title of your home or to your bank account is one of the most commonly misunderstood estate planning moves in Ontario. This article explains the legal, tax, and family risks — and suggests cleaner alternatives.

How the Transfer Works (And Why It Looks Easy)

When you add an adult child's name to your property title as a joint tenant, the right of survivorship means the property passes automatically to the child on your death. No will required. No probate application. No estate administration tax on that property.

For bank accounts, the same logic applies: a joint account passes to the surviving account holder outside the estate.

The simplicity is real. The problems are also real.

Problem 1: Immediate Capital Gains Tax

This surprises many people: adding a child to your title is a deemed disposition of half the property under the Income Tax Act, at fair market value, on the date of the transfer.

If your home is your principal residence and you and your child both live in it as your principal residences, the principal residence exemption may shelter the gain. But if your child owns their own home (which is true of most adult children), the exemption does not apply to their half. Any accrued gain on the child's half is taxable in the year of transfer.

On a property worth $900,000 with an original purchase price of $300,000, the accrued gain is $600,000. Half of that ($300,000) relates to the half you transferred to your child. Half of that gain is included in income (the current inclusion rate — verify with CRA). At a 50% marginal rate, the resulting tax bill can be substantial — easily exceeding any EAT saving on the entire property.

Problem 2: Land Transfer Tax

In Ontario, adding an adult child to title triggers a transfer of legal ownership. Ontario land transfer tax (LTT) applies to transfers of land for consideration. If the child provides no consideration (no payment), LTT may not apply — but there are nuances, and municipality-specific taxes (Toronto has its own LTT) may apply. Get specific advice before acting.

Problem 3: The Resulting Trust Presumption

Ontario courts have addressed many cases where a parent added an adult child to a home title or bank account "for estate planning purposes" and the child later claimed outright ownership — or where other beneficiaries sued for a share.

The legal rule: when a parent gratuitously transfers property to an adult child, the law presumes a resulting trust — the child holds the property for the benefit of the parent's estate, unless the child can prove a gift was intended. But when the parent has died, proving the parent's intention requires evidence — witnesses, letters, notes from meetings with a lawyer. Without clear written documentation of the parent's intention made at the time of the transfer, the surviving family members face expensive litigation.

This is the bitterest irony: a technique used to simplify an estate ends up generating exactly the kind of dispute it was meant to prevent.

Problem 4: Exposure to the Child's Creditors

Once the child is on title, their interest in the property is exposed to their creditors. If your child:

• Goes through a business failure or bankruptcy
• Has a judgment creditor
• Owes taxes to the CRA
• Faces a matrimonial property claim in a divorce

...then a creditor can reach the child's interest in your home. A creditor's claim against a jointly held property may force a court-ordered sale of the property, even if you are still living in it.

Problem 5: Loss of Control

Technically, a co-owner can sever a joint tenancy at any time without the other owner's consent. Your child could register a transfer converting the joint tenancy to a tenancy in common — eliminating the right of survivorship — and leave their half-interest to whomever they wish in their own will. You could end up owning a home with your child's surviving spouse.

Problem 6: Unequal Treatment of Siblings

If you add one child to title and leave other assets to other children, the child on title receives the full value of the property on survivorship without it forming part of your estate. That child effectively receives more than the others unless your will accounts for this — and often, it does not. The equalization conversation is painful after the fact.

What to Do Instead

Several techniques accomplish the same probate-avoidance goal more cleanly:

• Secondary will — if the property is a private asset not requiring probate, a secondary will avoids EAT without any transfer during your lifetime
• Alter ego trust or joint partner trust — transfers assets to a trust at cost with no immediate capital gain, bypasses probate on death
• A clearly documented gift with legal advice — if a gift to one child is truly your intention, have it structured and documented by a lawyer, with a corresponding note in your will addressing equalization with other beneficiaries

Frequently asked questions