The principal residence exemption can eliminate the entire capital gain on your home. It is not automatic. Since the 2016 tax year you must report the sale on your return and designate the property, or the CRA can deny the exemption outright and charge a late-designation penalty on top.
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The exemption is a formula, not an on/off switch. You take the gain and multiply it by one plus the number of years the property was designated as your principal residence, over the number of years you owned it. The extra year in the numerator is deliberate — it covers the year you buy a new home before selling the old one. If you owned and designated the property for every year you held it, the formula wipes out the whole gain.
To qualify, the property must be a housing unit you own and that you, your spouse or common-law partner, your former spouse, or your child ordinarily inhabited at some point in the year. Ordinarily inhabited is a low bar — a cottage used a few weeks each summer can meet it. It does not require it to be your main home.
Land counts up to half a hectare. Beyond that, the excess only qualifies if you can show it was necessary to your use and enjoyment of the housing unit — usually because a municipal minimum lot size or lack of access made a smaller parcel impossible. On a large rural Ontario lot, that is the fight.
Since 1982 a family unit — you, your spouse or common-law partner, and your unmarried minor children — can designate only one property as a principal residence for any given year. If you own both a house and a cottage, you cannot shelter both. You choose, year by year, and each year you assign to one property is a year you cannot assign to the other.
The right choice is not the more valuable property. It is the one with the larger average gain per year of ownership. Run the numbers for both before you designate, because the designation is made on the return for the year of the first sale and it constrains what you can claim when the second one sells.
Years in which you were not resident in Canada generally do not count toward the exemption, and the extra year in the formula is not available for a year you were non-resident. If you emigrated and later sold a Toronto home you had lived in for a decade, the exemption will usually be partial.
For dispositions from the 2016 tax year onward, you must report the sale on Schedule 3 of your return, including the year of acquisition, the proceeds and a description of the property. From 2017 onward you must also file Form T2091(IND) on any disposition of a principal residence — page 1 alone where the property was your principal residence for every year you owned it, and the full form where the exemption is only partial. Miss it and the CRA can deny the exemption entirely. A late designation may be accepted, but a penalty of $100 for each complete month it is late applies, subject to a cap. Failing to report a real property disposition at all also extends the CRA's reassessment window for that year.
The residential property flipping rule is the other trap. Residential property you held for fewer than 365 consecutive days is deemed to produce business income on sale, taxed at 100% rather than 50%, and the principal residence exemption is unavailable. There are exceptions for genuine life events — death, a marriage or relationship breakdown, a serious illness or disability, a job relocation, insolvency, an involuntary disposition. Selling because prices moved is not one of them.
Changing how you use a property is a deemed sale. Moving out and renting your home, or moving into a former rental, triggers a disposition at fair market value. Elections under subsections 45(2) and 45(3) can defer that. The 45(2) election also lets you keep designating a rented-out home as your principal residence for up to four further years — but only if you claim no capital cost allowance on it. Claim CCA once and the election is void.
Usually not. The CRA generally accepts that renting part of a home is ancillary to its use as your residence, and does not treat it as a partial change of use, provided the rental portion is relatively small, there is no structural change to accommodate it, and you claim no capital cost allowance on the rented portion. Claiming CCA is the line that gets crossed most often — the deduction is modest and the cost is a permanently taxable slice of your home's gain, plus recapture. Do not claim it.
Yes. That is the change made for the 2016 tax year and it is the single most common failure we see. Even where the exemption covers the entire gain and no tax is payable, the sale goes on Schedule 3 and the designation is made there. If you forgot, ask the CRA to amend the return for that year as soon as you notice — the late-designation penalty accrues monthly, so the delay is what costs money, not the mistake itself.
Compare gain per year of ownership, not total value. Divide each property's total gain by the number of years you owned it, then assign years to whichever yields the larger sheltered amount, remembering that the plus-one year covers a transition. If the cottage has been in the family for thirty years and the house for six, the cottage often wins even though the house is worth more. Do this analysis before either property is sold, because the first designation locks in the constraint on the second.
Only in narrower circumstances than before. Rules effective for the 2017 and later tax years restricted the exemption for trusts to particular categories — broadly, certain alter ego and spousal trusts, qualifying disability trusts, and trusts for a minor whose parents have died — and required a specified beneficiary who ordinarily inhabits the property. Putting a home into an ordinary family trust for probate planning can therefore cost the exemption. Get the trust reviewed before, not after, the transfer.
Open your file tonight — a licensed Ontario lawyer will confirm everything with you by tomorrow.