Principal Residence Exemption Canada: The Full Guide
Selling your home in Canada can be completely tax-free — no dollar cap, even on a large gain. But the exemption is a formula, not a blanket promise: it depends on which years you designate, and since 2016 you must report the sale even when you owe nothing.
How we check the numbers: every figure on this page is calculated from official CRA, Statistics Canada or Bank of Canada data and cross-checked with the free calculators on this site — run them yourself to verify.
The short version
The exemption shelters the gain on a home that qualifies as your principal residence. A house, cottage, condo, apartment, duplex unit, trailer, mobile home or houseboat can all qualify. The land under it usually counts up to 0.5 hectare (1.24 acres) — more only if you can show the extra land was needed to use and enjoy the home, for example a municipal minimum lot size larger than half a hectare.
What counts as a principal residence year
A property qualifies for a year only if all four conditions hold:
- It is a housing unit (or a leasehold interest in one, or a co-op share acquired to live in the unit).
- You own it, alone or jointly with another person.
- Someone in the family lived in it — you, your current or former spouse or common-law partner, or any of your children — at some time during the year. The CRA does not set a fixed minimum number of days; a cottage used each summer can qualify for that year.
- You designate it as your principal residence for that year when you sell.
Only years in which you were resident in Canada count toward the designation. And for 1982 and later years, a family unit can designate only one property per year — you, your spouse or common-law partner, and unmarried children under 18 share a single designation. A couple cannot shelter a city home and a cottage for the same years.
The formula, with two worked examples
First find the capital gain: sale proceeds, minus the adjusted cost base, minus selling costs such as commissions and legal fees. Then apply the exemption formula from section 40(2)(b) of the Income Tax Act:
Exempt gain = capital gain × (1 + years designated) ÷ years owned. If the fraction exceeds 100%, it is capped at 100% — the whole gain is exempt. Both counts use tax years ending after the acquisition date.
Example 1: lived in it the whole time — $370,000 gain, $0 tax
Bought in 2016 for $600,000, sold in 2026 for $1,000,000, with $30,000 of selling costs. The gain is $370,000. The 10 tax years ending after purchase (2017–2026) were all designated, so (10 + 1) ÷ 10 = 110%, capped at 100%. Exempt gain: $370,000. Taxable capital gain: $0. There is no dollar cap on the exemption.
Example 2: home and cottage split the years — only 70% exempt
A family owns a home for 10 years and designates it for 6 of them, keeping the other 4 years for the cottage. On a $350,000 gain, the exempt share is 70% — $245,000. The remaining $105,000 is a capital gain, and at the 50% inclusion rate, $52,500 is added to income. The lesson: run the numbers for both properties before choosing which years go where, because years spent on one property are lost to the other.
The +1 year: why moving does not cost you a year
The “+1” in the formula covers the year you sell one home and buy another. You lived in both that year but can designate only one — the extra year means the overlap does not expose part of your gain. One catch: you only get the +1 if you were resident in Canada during the year you bought the property. If you were non-resident throughout the purchase year, there is no extra year.
Three ways people lose part of the exemption
1. Renting it out — change in use
Turning a home into a rental, or a rental into your home, is a deemed disposition at fair market value at the time of the change. A section 45(2) election lets you keep designating a home for up to 4 more years while it is rented, but you cannot claim capital cost allowance (CCA) in those years. A section 45(3) election works in the other direction, for up to 4 years before you move into a former rental.
2. Renting only part of the home
If part of the home earns income, split the sale price and the cost base between the personal part and the income part, using a reasonable measure such as square metres or rooms. The CRA keeps the whole property as a principal residence only if the income use is ancillary, there is no structural change, and no CCA is claimed.
3. Selling within 365 days — the flipping rule
Since January 1, 2023, a residential property owned for fewer than 365 consecutive days is flipped property: the profit is business income taxed at 100%, the principal residence exemption does not apply, and any loss is deemed nil. Nine life-event exceptions can save the sale, including death, a household addition, a marriage breakdown after at least 90 days apart, a threat to personal safety, serious illness or disability, an eligible relocation at least 40 km closer to work or school, involuntary job loss, insolvency, and destruction or expropriation. Note that holding past 365 days only stops the automatic rule — the CRA can still treat a sale as business income based on your intent at purchase.
One more rule that surprises sellers: a home is personal-use property, so a loss on selling it cannot be claimed.
Reporting: exempt does not mean invisible
Since the 2016 tax year, the CRA only allows the exemption if you report the disposition and the designation on your return for the year of sale — Schedule 3 (Capital Gains or Losses) plus Form T2091(IND). File a separate T2091(IND) for each property sold that year. If the home was your principal residence for all years, or all years but one, only page 1 of T2091(IND) is needed. If you forgot, ask the CRA to amend that year's return: a late designation may be accepted, but the penalty is the lesser of $100 for each complete month late and $8,000 — 12 months late costs $1,200.
Frequently asked questions
Do I pay tax when I sell a home I lived in the whole time?
No tax on the gain if the home was solely your principal residence for every year you owned it — but since 2016 you must still report the sale on Schedule 3 and Form T2091(IND), even when the gain is fully exempt.
Can a couple designate two different homes for the same year?
No. For 1982 and later years, a family unit — you, your spouse or common-law partner, and unmarried children under 18 — can designate only one property as a principal residence for each year.
What happens if I rent out my home or part of it?
A change in use to rental (or back) is a deemed disposition at fair market value. A section 45(2) election can let you keep designating a rented home for up to 4 more years, but you cannot claim capital cost allowance during those years. If only part of the home is rented, split the proceeds and cost base by a reasonable measure such as square metres.
Does the exemption apply if I sell within a year of buying?
Usually not. Since January 1, 2023, the federal flipping rule treats a residential property owned for fewer than 365 consecutive days as business income taxed at 100%, with no principal residence exemption — unless a listed life event, such as death, marriage breakdown, or an eligible relocation, caused the sale.
What if I forgot to report a home sale?
Ask the CRA to amend the return for the year of the sale. The CRA accepts a late designation in certain circumstances, but a penalty may apply: the lesser of $100 for each complete month late and $8,000.
Sources
What about the part that is taxable?
The remaining gain is still taxed at the 50% inclusion rate — see Capital Gains Inclusion Rate 2026: Still 50% — and if you are weighing selling against staying put, run Overpay Your Mortgage or Invest in 2026? The Math.
Educational content only — not financial advice. Figures are estimates; confirm your own situation with the CRA or a licensed financial advisor. See our Disclaimer.