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Spousal Rollover on Death: How the Tax Deferral Works in Ontario

See which assets pass tax-free to a surviving spouse under the federal spousal rollover, how executors can elect out, and when tax finally applies in Ontario.

Family Law4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
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Key takeaways
  • At death a person is generally treated as selling capital property at fair market value, unless it passes to a spouse or spousal trust.
  • The property must be locked in for the spouse or trust no later than 36 months after death.
  • The rollover defers tax rather than removing it, and the legal representative can elect out property by property.

When someone dies, the tax return for the year of death can include large capital gains. For married and common-law couples, the federal spousal rollover can push that tax off to a later date.

If you are a surviving spouse or an executor, this article explains what generally transfers without tax, the conditions that apply, and when tax finally comes due. Because the outcome depends on the assets and the will, confirm the details with an accountant or lawyer.

The default rule: a deemed sale at death

Under the Income Tax Act, a person is deemed to have disposed of capital property at fair market value immediately before death. This means unrealized gains on things like investments or a cottage can be taxed on the final return even though nothing was actually sold.

The spousal rollover is the main exception to that default.

How the rollover works

If capital property passes to a surviving spouse or common-law partner who is resident in Canada, or to a testamentary spousal trust, the deceased is deemed to sell at adjusted cost base. The capital gain on the final return is then zero, and the survivor takes over the deceased's cost.

Common-law partners qualify for the federal rollover as well as married spouses. Property law is different. In Ontario, common-law couples are not legally required to split property acquired while living together, but the tax rollover still applies to them.

Choosing not to use the rollover

The legal representative can elect in the final return, property by property, to transfer at fair market value instead of using the rollover. Executors sometimes consider this where it makes sense to report a gain now, for example to use up tax room on the final return. Whether that helps depends on the numbers, so an accountant should model it before the return is filed.

When tax finally applies

The rollover is a deferral. The survivor takes over the deceased's cost, so a gain built up over both lifetimes is still there. It generally comes into play in these situations:

SituationWhat happens
Survivor later sells the propertyThe survivor works from the deceased's old cost
Survivor diesThe survivor is in turn deemed to dispose of capital property at fair market value just before death
Property is in a spousal trust and the beneficiary spouse diesThe trust is deemed to dispose of its capital property at the end of that day, and the deferred gain is taxed then

On a separation rather than a death, a similar rollover idea applies. Capital property transferred to a spouse or common-law partner, or to a former spouse or partner in settlement of rights arising from the relationship, rolls over at adjusted cost base if both are resident in Canada, and the transferor may elect out in their return.

Registered plans have their own rules

RRSPs and RRIFs follow their own set of tax rules, which are described here separately from the rollover for other property. By default, an unmatured RRSP is treated as received at fair market value on the final return. If the spouse or common-law partner is the sole beneficiary and all the RRSP property is transferred to a plan for the spouse by December 31 of the year after death, the deceased is not taxed on the RRSP value. A RRIF with a successor annuitant who is the spouse also avoids tax for the deceased. Our separate article on RRSP rollovers covers the steps.

What to do next

Frequently asked questions

Is the spousal rollover automatic?

Not on its own terms. The property must pass to a surviving spouse or common-law partner resident in Canada, or to a testamentary spousal trust, and it must vest indefeasibly for them no later than 36 months after death. A spousal trust must also meet the conditions in the tax rules, or it does not get the rollover. The legal representative can also elect out of it property by property on the final return.

Does the rollover apply to common-law partners?

Yes. The rollover applies to a surviving spouse or common-law partner resident in Canada. This is a tax rule and does not change property rights between unmarried partners under Ontario law.

How long do we have to lock in the property?

The property must vest indefeasibly for the spouse or trust no later than 36 months after death. You can make a written extension request to the Tax Services Office before the 36 months end.

Is tax ever paid on these assets?

Yes, usually later. The survivor takes over the deceased's cost, and the survivor is deemed to dispose of capital property at fair market value at their own death.

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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