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The principal residence exemption in BC: what happens to the gain when you sell your home

Selling the home you live in is usually tax free in Canada, but only if you report the sale and designate the property correctly. Here is how the CRA's principal residence exemption works for a Fraser Valley seller, including the cases where it covers only part of the gain.

By Shawn Kandola, PREC · Published November 5, 2026 · 8 min read

What counts as a principal residence

The Canada Revenue Agency (CRA) accepts a house, condo, townhouse, cottage or mobile home as a possible principal residence. For a given year, you have to own it alone or jointly, you, your spouse or common-law partner, or your child has to have lived in it at some point that year, and you have to designate it. The CRA's folio says even a short stay in the year is enough, unless the main reason you hold the home is to earn income.

Land is normally limited to 0.5 hectares (1.24 acres), including the land under the house, unless you can show more is necessary to use and enjoy the home, for example where the municipality's minimum lot size is larger.

For every year from 1982 on, a family can designate only 1 home. From 1993, a family means you, your spouse or common-law partner, and your unmarried children under 18. If you own a house in Surrey and a cabin, you choose which one gets each year.

Reporting the sale: Schedule 3 and Form T2091(IND)

For any sale from 2016 on, the CRA only allows the exemption if you report the sale and the designation on your return, on Schedule 3, Capital Gains (or Losses), and Form T2091(IND). If the home was your principal residence for every year you owned it, or every year but 1, you only complete page 1 of the form.

Forgetting is fixable but not free. The CRA accepts late designations in certain circumstances, with a penalty of the lesser of $100 for each complete month from the original due date to your request, or $8,000. Leaving a real estate sale off your return can also extend the time the CRA has to reassess that year.

The formula and the +1 rule

When the home was not your principal residence for every year you owned it, the exempt part of the gain equals the gain multiplied by (1 + the years you designate it and were resident in Canada), divided by the years you owned it. The year you buy and the year you sell each count as a full year.

The extra 1 exists because most people own 2 homes in the year they move. Say you bought a Langley townhouse in 2018, bought a house in 2026 and sold the townhouse later that year. You owned the townhouse in 9 tax years. Designate it for 2018 to 2025, which is 8 years, and the formula gives (1 + 8) divided by 9: the whole gain is exempt, and 2026 is still free to designate on the new house.

The +1 only applies if you were resident in Canada in the year you bought the home, a condition that has applied to sales after October 2, 2016. Any gain left after the exemption is a capital gain, and the inclusion rate is 1/2: the government confirmed in Budget 2025 that it would not proceed with the proposed increase.

Change in use: renting it out, or moving into a former rental

Turning your home into a rental, or a rental into your home, is a change in use, which the CRA treats as a sale at fair market value followed by an immediate buy back. 2 elections soften this.

Under subsection 45(2), when you move out and rent the home, you can elect not to be treated as having changed its use and keep designating it for up to 4 years, as long as you designate no other property, stay a Canadian resident and claim no capital cost allowance (CCA). The 4 years can be extended if your employer relocates you and your original home is at least 40 km farther from the new workplace than your temporary home.

Under subsection 45(3), when a rental becomes your home, you can postpone the deemed gain until you actually sell and designate the home for up to 4 years before you moved in. It is not available if CCA was claimed after 1984, and it is due by the earlier of your filing due date for the year of sale and 90 days after the CRA asks.

Since March 19, 2019, both elections also work for a partial change in use. Keep evidence of the fair market value on the date the use changed. A dated market analysis or appraisal is the usual record, and if the change was recent, a current Langley home value estimate is a reasonable place to start.

Basement suites, laneway homes and home offices

When part of a home earns income, the CRA splits the price and cost on a reasonable basis, usually floor area or number of rooms, and only the gain on the income producing part is taxable.

The whole home keeps its status only if the income use is ancillary to living there, there were no structural changes to create it, and no CCA is claimed. Renting a room, a home daycare or a home office usually meets that test. The CRA's folio gives converting part of a house into a self-contained rental unit, such as a duplex, as an example of a change treated as a sale of that portion, and claiming CCA on any part of the home has the same effect.

Farm land and acreage

Acreage is common around Langley, Abbotsford and Chilliwack. A farmer selling farmland that includes the home can choose between 2 methods under paragraph 40(2)(c) of the Income Tax Act:

• Method 1: split the property into the home portion and the rest on a reasonable basis. The CRA generally accepts the higher of the value of 0.5 hectares based on comparable farm sales and the value of a typical residential lot in the area. The home portion can be exempt and the rest is taxed normally.
• Method 2: make no split, and reduce the whole gain by $1,000 plus $1,000 for each year the property was your principal residence and you were resident in Canada, by attaching a signed election letter to your return.

Homes sold within 365 days

Since January 1, 2023, the federal residential property flipping rule treats the gain on a home owned for less than 365 consecutive days as business income. It is fully taxable, the principal residence exemption does not apply, and a loss is deemed to be nil. The rule does not apply if the sale happened because of, or in anticipation of, any of these:

• The death of the owner or a related person
• A related person joining your household, or you joining theirs
• A marriage or common-law breakdown, after living apart for at least 90 days before the sale
• A threat to the personal safety of you or a related person
• A serious illness or disability of you or a related person
• A work or school relocation where the new home is at least 40 km closer to the new location
• Involuntary job loss for you or your spouse or common-law partner
• Insolvency, or destruction or expropriation of the property

BC's separate flipping tax, and US citizens

British Columbia adds its own tax on homes sold within 730 days, filed separately from your income tax, with its own exemptions and a $20,000 deduction for a home you lived in for at least 365 days. Read how the BC home flipping tax works before you sell anything you have owned for less than 2 years.

The principal residence exemption is Canadian tax law only. US citizens are taxed by the United States on worldwide income, and the IRS home sale exclusion is up to US$250,000 of gain, or US$500,000 on a joint return, if you owned and lived in the home for at least 2 of the 5 years before the sale. A gain that is fully exempt in Canada can still be partly taxable in the US, so a cross-border accountant is worth calling before you list.

Before you list

Selling costs such as commissions and legal fees reduce a taxable gain, and capital improvements add to your cost, so keep the receipts. Here is a plain breakdown of what selling costs usually include.

When I list a home that has had a suite, a rental period or extra acreage, I ask the seller to talk to their accountant before we settle on a price, because the tax answer can change what they need to net. If you are planning a move, start with this overview of selling a home in Surrey.

This is general information, not tax advice. Confirm your own situation with an accountant before you sell.

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