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№ 22 Wills & Estates

Capital Gains on an Inherited Cottage in Ontario

Learn how the deemed disposition at death works for a family cottage, how the gain is worked out, and the options that may reduce or defer the tax.

Wills & Estates5 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • At death, the deceased is treated as having sold their property just before death, and any gain is reported on the final return.
  • The gain is the fair market value on the date of death minus the adjusted cost base.
  • A cottage is personal-use property, so a loss on it generally cannot be claimed.
  • Only one property per family unit can be designated as a principal residence for any year after 1981, so a cottage designation can affect the family home.

A family cottage often has a low purchase price from decades ago and a high value today. When the owner dies, that difference can lead to a tax bill that surprises the family, and it is paid by the estate, not by the cottage itself.

This article explains in plain words how the tax rules treat a cottage at death and the main options an estate trustee and an accountant look at. Every estate is different, so use this as a map, not a prediction of your own bill.

The deemed disposition: a sale that never happened

For tax purposes, a person who dies is treated as having sold all their property just before death. This is called a deemed disposition, and it applies even though nobody actually sold the cottage.

Any gain or loss is reported on Schedule 3 and line 12700 of the deceased's final return. The estate trustee, whose job includes paying taxes and debts before distributing what is left, is responsible for dealing with this.

How the gain is worked out

The deemed proceeds are the fair market value of the capital property on the date of death. The gain is those proceeds minus the adjusted cost base.

How the heirs' own cost base is set for a later sale depends on the situation, so it is worth confirming with an accountant.

ItemWhat it means for a cottage
Deemed proceedsFair market value on the date of death
Adjusted cost baseThe figure subtracted from the proceeds to find the gain
Gain on final returnProceeds minus adjusted cost base, reported on Schedule 3
Heirs' cost baseDepends on the situation; confirm with an accountant

A written appraisal as of the date of death is a practical way to support the value you report. It also helps later, when an heir sells.

Cottage, principal residence and the family home

A cottage is personal-use property. Its gain is reported on Schedule 3, and a loss on personal-use property generally cannot be claimed.

A property that qualifies as a principal residence must still be designated on the final return, using Schedule 3 and Form T1255. The deceased's designation applies only until the date of death.

There is a trade-off. Only one property per family unit can be designated as a principal residence for any year after 1981, and the CRA's own example shows a cottage designated for certain years blocking the family house for those years. Choosing which property to designate for which years is a decision to make with an accountant.

Land size can matter too. Land up to one-half hectare generally counts as part of the residence, and excess land is treated as not contributing to the residence unless it was necessary for the use and enjoyment of the housing unit.

Options that may reduce or defer the tax

Whether a rollover or an election is better depends on the whole picture, including the other income on the final return and what the family plans to do with the cottage. It is worth asking an accountant how any later tax would work.

Timing and what to do next

The final return is due April 30 of the following year if death occurs January 1 to October 31. If death occurs November 1 to December 31, it is due six months after the date of death. The payment due date for any balance owing does not move with the filing date.

A lawyer and an accountant working together can confirm the current inclusion rate and the numbers for your case.

Frequently asked questions

Do heirs pay tax when they inherit the cottage?

The tax on the deemed disposition is reported on the deceased's final return, so it is generally an estate matter. Heirs may deal with their own tax later if they sell. How that is measured depends on the situation, so it is worth confirming with an accountant.

Can the estate claim a loss on a cottage that dropped in value?

A loss on personal-use property generally cannot be claimed, and a cottage is personal-use property.

Can the cottage be treated as a principal residence?

If it qualifies, it must still be designated on the final return using Schedule 3 and Form T1255, and the designation applies only until the date of death. Only one property per family unit can be designated for any year after 1981.

When is the tax due?

Filing is due April 30 of the following year for deaths from January 1 to October 31, or six months after death for deaths from November 1 to December 31. The payment date does not move with the filing date.

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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