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Spousal Trusts in Ontario: How They Work and Who Qualifies

Learn what a spousal trust is, the conditions it must meet under the Income Tax Act, and why blended families in Ontario use one in a will.

Family Law4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 1, 2026
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Key takeaways
  • A qualifying spousal trust must be created by the deceased's will.
  • The surviving spouse must be entitled to all the trust income arising before their death, and no one else may receive or use income or capital during their lifetime.
  • A trust that fails the conditions loses the tax rollover, and the cure for that is narrow.

If you have heard the term spousal trust, it was probably in a conversation about a will. Someone may have suggested that instead of leaving everything to your spouse outright, you leave it in a trust that looks after them for life. It is a common tool when a person has children from an earlier relationship.

This article explains what a spousal trust is in plain terms, the conditions the Income Tax Act sets for one to qualify, and why blended families often choose it. It is general information for Ontario, not advice on your own will.

What a spousal trust is

A trust is an arrangement where a person called a trustee holds and manages property for the benefit of someone else. In a spousal trust, the person who benefits during their lifetime is the surviving spouse or common-law partner of the person who died.

For tax purposes, the term used is a testamentary spouse or common-law partner trust. The word testamentary matters: a qualifying spousal trust must be created by the deceased's will. How a trust set up separately while you are alive is treated is a different question, so it is worth confirming with a lawyer or accountant.

The conditions to qualify

Not every trust for a spouse gets spousal trust treatment. The Canada Revenue Agency's guidance sets out conditions that cover how the trust is created, who can benefit from it, and when the property must be locked in.

A written request to extend the 36-month period can be made to the Tax Services Office before the 36 months end. If a trust does not meet the conditions, it does not get the rollover. A cure under section 70(7) is available only where the problem is testamentary debts. In practice, the wording of the will is what decides this, so the drafting deserves care.

Why blended families use them

In a blended family, the main worry is often that property left outright to a new spouse can end up going to that spouse's own relatives instead of the deceased's children. A spousal trust can address this. The surviving spouse has the benefit of the income, and the will can name who receives what remains afterward.

There is also a tax reason. Property that passes to a qualifying spousal trust can be moved on at the deceased's adjusted cost base, so the capital gain on the final return is zero. The tax is deferred, not erased: the trust is deemed to dispose of its capital property at the end of the day the beneficiary spouse dies.

Whether a spousal trust suits your family depends on the size of the estate, how the assets are held, and how much control you want to keep over the final beneficiaries. A lawyer can walk through those choices with you.

How it fits with a surviving spouse's other rights

A married survivor is not limited to what the will gives. They can claim half the difference in net family property under the Family Law Act, take what the will gives, or, if there is no will, take their share under the Succession Law Reform Act. To claim equalization, they must file the Election of Surviving Spouse form with the Estate Registrar for Ontario no later than six months from the death.

If no election is filed, the survivor is deemed to take under the will or intestacy. If they elect equalization, gifts to them in the will are deemed revoked unless the will expressly says the gifts are in addition. Whether that affects an interest in a trust depends on how the will is written, so ask before assuming.

A dependant can also ask the court for support out of the estate if the deceased did not make adequate provision for their proper support, with or without a will. A six-month limitation period applies to that kind of claim. How a spousal trust interacts with a claim like this depends on your situation and the wording of the will, so it is worth confirming with a lawyer.

What to do next

Frequently asked questions

Does a spousal trust have to be in a will?

A qualifying spousal trust must be created by the deceased's will. A trust created some other way is treated differently, so confirm the details with a lawyer.

Can the trustee pay money to my children while my spouse is alive?

Not if you want the trust to qualify. No one other than the surviving spouse may receive or use trust income or capital during the spouse's lifetime.

What happens if the trust does not meet the conditions?

It does not get the rollover. A cure under section 70(7) applies only where the problem is testamentary debts.

Does a spousal trust stop my spouse from claiming equalization?

No. A married survivor can still choose between equalization and what the will gives. If they elect equalization, gifts to them in the will are deemed revoked unless the will says they are in addition.

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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