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Subsection 45(2) Election in Canada: Change in Use Tax Bill

Learn how the subsection 45(2) election works in Canada, how to file it when you rent out your home, how long it lasts and when it is unavailable.

Tax4 min readTSLBy the Treadstone Law Team · CanadaUpdated November 1, 2026
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Key takeaways
  • A change from personal to rental use is normally a deemed sale at fair market value, and the 45(2) election lets you elect that there be no deemed sale.
  • You make the election by attaching a signed letter to the return for the year of the change, describing the property and citing subsection 45(2).
  • The designation under the election lasts up to four years while the property earns income, unless an employer-relocation extension applies.

You have moved out of your home and plan to rent it, but you would rather not trigger a tax bill on a sale you never made. The Income Tax Act has an election aimed at exactly this situation.

This article explains what a change in use does, how to file the subsection 45(2) election, how long it lasts, and the situations in which it is not available.

This article covers Canadian federal tax law, which applies in every province.

What a change in use does

When a property changes from personal use to income-producing use, the law treats you as having sold it at fair market value and immediately bought it back at the same amount, and that amount becomes your new cost base. For a partial change, the proportionate share of fair market value is used.

A deemed sale can produce a capital gain even though no money changed hands. Half of a capital gain is taxable. A principal residence designation can shelter some or all of that gain, but the exemption depends on the years the home qualifies and the other rules in the Income Tax Act. The election is a way to avoid the deemed sale in the first place.

How to make the election

Under subsection 45(2), you can elect that there be no deemed sale on a change from personal use to income-producing use. You attach a signed letter to your return for the year of the change, describing the property and citing subsection 45(2).

For a partial change in use, such as renting part of your home, the election has been available since 19 March 2019. A small rental or business use with no structural changes and no CCA may not trigger a deemed sale at all.

How long the election lasts

While the election is in place, you may designate the property as your principal residence for up to four years while it earns income, if you do not designate another property and you remain a Canadian resident.

There is an exception. The four-year limit can be extended indefinitely under section 54.1 in certain employer-relocation cases, including where the home is at least 40 km farther from the new workplace than your subsequent residence.

Because only one property per family unit can be designated for each year from 1982 onward, a second home you designate for the same years can interfere. If you and your spouse own two homes, you may split years between them as long as no year is designated for two properties.

When the election is not available

If the property later goes back from rental to personal use, a related election exists under subsection 45(3). It postpones the deemed sale until the actual sale, and notice in writing is due by the earlier of 90 days after a CRA demand and the filing-due date for the year of the actual sale. It allows up to four prior years to be designated, but not if CCA was claimed.

What to do next

Decide before you file for the year you start renting. The letter goes with that year's return, so it is easiest to handle when you prepare the return rather than years later. If you are unsure whether your situation fits, a lawyer or accountant can review it.

Reporting the sale is required even if the gain is fully exempt, and CRA allows the exemption only if the sale and designation are reported.

Frequently asked questions

Is the 45(2) election automatic?

No. You must attach a signed letter to the return for the year of the change, describing the property and citing subsection 45(2).

How many years does the election cover?

You may designate the property as your principal residence for up to four years while it earns income, if you do not designate another property and remain a Canadian resident. Certain employer-relocation cases can extend this under section 54.1.

Can I claim depreciation on the rental and still use the election?

No. No CCA can be claimed on the property under the election. The election is also not available if CCA was claimed after 1984 and on or before the change in use.

Does the election work if I rent only part of my home?

Yes. Since 19 March 2019, a 45(2) or 45(3) election is also available for a partial change in use. A small rental use without structural changes or CCA may not cause a deemed sale at all.

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. Canadian 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 tax lawyer or accountant. Reach us at 1-844-900-1070 or send our Team a message.

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