What is the Principal Residence Exemption?

The Principal Residence Exemption is one of the most valuable tax benefits available to Canadian homeowners. For most Calgary families, it means selling their home is entirely tax-free — regardless of how much the property has appreciated.

How the PRE works

When you sell (or are deemed to have sold) a property, any capital gain is normally included in income and taxed. The PRE shelters gains on a "principal residence" — a housing unit ordinarily inhabited by the taxpayer or their spouse, common-law partner, former spouse, or child in a given tax year. The exemption is calculated using a formula that multiplies the gain by the fraction of designated years over total years of ownership, plus 1.

The +1 rule

The formula is: Exempt gain = Total gain × (1 + Number of designated years) ÷ Number of years owned. The "+1" in the numerator means that even if you only designate the property for fewer years than you owned it, you still get extra coverage. Practically, it means you can have full exemption on a property you bought and sold in the same calendar year, and it smooths the transition when you move from one principal residence to another.

Designation rules

You can only designate one property as your principal residence per year per "family unit" (taxpayer, spouse or common-law partner, and minor children). If your family owns a cottage and a city home simultaneously, you can only designate one as the principal residence for each year — you must choose strategically to maximize total exemption across both properties.

Ordinary inhabitation

The home must have been "ordinarily inhabited" by you or a qualifying family member. CRA has interpreted this broadly — even seasonal inhabitation can qualify in some circumstances. However, a home rented out entirely for the full year does not qualify as a principal residence for that year.

Estate and death scenarios

On death, the deceased's terminal year T1 return should include the PRE designation for the deemed disposition of the home. This is separate from the estate's subsequent sale of the property. The estate cannot claim the PRE on the T3 return for gain accruing after the date of death (since only the deceased, not the estate, can designate a property as a principal residence).

Changes since 2016

Since 2016, all principal residence dispositions must be reported on Schedule 3 of the T1 return, even when full exemption is claimed. Failure to report — even a fully exempt sale — can result in CRA denying the exemption. Every Calgary home sale should be disclosed to your accountant in the year of closing.

Frequently asked questions

This page is for general information only and does not constitute legal or tax advice. Consult a qualified Alberta lawyer or accountant for advice specific to your situation.