Capital gains tax when you sell your home, and why most sellers owe nothing

If you sold your home and it was your principal residence for every year you owned it, you do not pay tax on the gain. That is the whole answer for most Canadian sellers, and it is worth putting first because a lot of writing on this subject makes you read about inclusion rates and adjusted cost bases before telling you that none of it applies to you.

There is a catch, and it is a filing catch rather than a tax one. Since the 2016 tax year the Canada Revenue Agency will only allow the exemption if you report the sale on your return. The tax is still nil. But the paperwork is no longer optional, and the people who get caught are usually the ones who reasoned that a tax free sale could not possibly need to be reported.

This guide covers who qualifies, the exact formula the CRA uses, and the four situations that take the exemption away in whole or in part. It is written for Alberta sellers, though the rules here are federal and apply the same way across the country.

The short version

• Sold a home you lived in, owned for more than a year, never rented out, on a normal city lot? You almost certainly owe nothing. Report it anyway.
• Owned it less than 365 days? Read the section on the flipping rule before you assume anything.
• Rented out part of it, or moved out and rented it before selling? Part of the gain is probably taxable.
• Acreage larger than about 1.24 acres? The land above that size may not be covered.
• You and your partner each owned a home for some of the same years? Only one of them can be designated per year.

What counts as a principal residence

The CRA is broader here than people expect. A principal residence can be a house, a cottage, a condominium, an apartment in an apartment building, an apartment in a duplex, a trailer, a mobile home, or a houseboat. It does not have to be the place you spent the most nights, and it does not have to be in Canada.

For a property to qualify for a given year, all four of these have to be true:

• It is a housing unit, a leasehold interest in a housing unit, or a share of the capital stock of a co-operative housing corporation acquired only to get the right to inhabit a housing unit owned by that corporation.
• You own the property, alone or jointly with another person.
• You, your current or former spouse or common-law partner, or any of your children lived in it at some time during the year.
• You designate the property as your principal residence.

That third condition is looser than it sounds. The technical requirement is that the home was ordinarily inhabited in the year, and the CRA accepts that brief occupation can satisfy it. Someone who sells early in the year, or buys late in the year, can still meet the test for that year by having lived there at any point in it. A seasonal cottage qualifies too.

The limit on that generosity is purpose. If the main reason you own the place is to gain or produce income, it is generally not considered ordinarily inhabited, even if you stayed there occasionally. Incidental rental income does not disqualify a property. Owning it primarily to earn income does.

Only one home per family, per year

For 1982 and later years, a family can designate only one property as its principal residence for any given year. Your family unit for this purpose is you, your spouse or common-law partner throughout the year, and your children, other than a child who was married, in a common-law partnership, or 18 or older during that year.

The exception is if you were separated for the entire year under a court order or a written agreement, in which case your spouse is not part of your family unit for the year.

This rule catches a specific and very common situation. Two people each own a home. They move in together, keep both properties for a few years, then sell both. They cannot both claim a full exemption for the overlapping years. One property gets designated for those years and the other does not, and the gain attributable to the undesignated years is taxable. Deciding which property to designate for which years is a real calculation, and it is worth doing with an accountant before either sale rather than after both.

The formula

When a property was not your principal residence for every year you owned it, the exemption does not vanish. It gets prorated. The CRA reduces your gain by:

A multiplied by (B divided by C)

• A is the gain otherwise determined on the disposition.
• B is 1 plus the number of tax years ending after you acquired the property for which it was your principal residence and during which you were resident in Canada.
• C is the number of tax years ending after you acquired the property during which you owned it.

The 1 at the front of B is known as the one plus rule, and it exists to handle the year you move. If you sell one home and buy another in the same year, both are technically your residence at some point in that year but only one can be designated for it. The extra year in B covers the gap. It is available only if you were resident in Canada during the year that includes the acquisition date.

The practical effect is that one year of non-residential use usually costs you nothing, because the one plus absorbs it. Longer gaps do not get absorbed.

The four situations that break the exemption

1. You owned it for less than a year

This is the one most seller guides in Alberta leave out, and it is the most expensive to get wrong.

Since 1 January 2023, if you dispose of a housing unit in Canada that you owned for less than 365 consecutive days, the profit is deemed to be business income. Not a capital gain. That means the profit is fully included in your income rather than getting the lower capital gains treatment, and the principal residence exemption is not available at all. If you lose money instead, the loss is deemed to be nil, so you cannot claim that either.

The rule also reaches assignment sales, where you sell the right to buy a property before taking ownership of it. In that case the 12-month clock resets once the person who signed the purchase and sale agreement actually secures ownership.

There are nine life events that take you out of the deeming rule. The sale has to have happened because of, or in anticipation of, one of these:

• The death of the taxpayer or a person related to them.
• A related person joining the taxpayer's household, or the taxpayer joining a related person's household. Moving in with a partner, the birth of a child, an adoption, or taking care of an elderly parent all count.
• The breakdown of a marriage or common-law partnership, where the taxpayer has been living separate and apart from their spouse or partner for at least 90 days before the sale.
• A threat to the personal safety of the taxpayer or a related person, such as domestic violence.
• A serious disability or illness of the taxpayer or a related person.
• An eligible relocation, where the new home is at least 40 kilometres closer to a new work location or school.
• The involuntary termination of the employment of the taxpayer or their spouse or partner.
• The insolvency of the taxpayer.
• The destruction or expropriation of the property, including destruction by a natural or man-made disaster.

Notice what is not on that list. Changing your mind, finding the commute worse than expected, or simply getting a good offer are not qualifying events. Neither is a job change you chose, unless it meets the 40 kilometre relocation test.

If you owned the property for at least 365 days, the deeming rule does not apply, but that does not automatically make your profit a capital gain either. Whether it is business income or a capital gain then becomes a question of fact based on your circumstances, including how often you do this and what your intention was when you bought.

2. You rented it out, or part of it

If you used part of your home to earn income, you have to split the selling price and the adjusted cost base between the part you lived in and the part you did not. The CRA accepts a split based on square metres or the number of rooms, as long as it is reasonable. Only the income producing portion generates a taxable gain.

There is an important carve-out. The CRA will treat the entire property as keeping its character as a principal residence, despite the income use, when all three of these are true:

• The income producing use is ancillary to the main use of the property as a residence.
• There is no structural change to the property.
• No capital cost allowance is claimed on the property.

A home daycare is the CRA's own example. A basement suite with its own entrance, built as such, with depreciation claimed against the rental income, is the opposite case.

That third condition deserves emphasis, because it is a trap that looks like a benefit. Claiming capital cost allowance against rental income lowers your tax in the years you claim it. It also disqualifies you from this carve-out and can trigger a recapture when you sell. Many people claim it without being told what it costs later.

3. You changed what the property was used for

Every time you change the use of a property, the CRA considers you to have sold it at fair market value and immediately reacquired it for the same amount. You have to report the resulting gain in the year the change happens, even though no money moved and nothing was sold.

Moving out of your home and renting it out is a change of use. So is moving into a property you had been renting out.

Two elections soften this:

• Subsection 45(2), for turning your home into a rental. You elect not to be considered as having started to use it as a rental, so there is no deemed sale. While the election is in effect you can designate the property as your principal residence for up to four years even though you are not living there, provided you do not designate any other property for those years and you remain a resident of Canada. You cannot claim capital cost allowance. The four year limit can be extended indefinitely if you are living away because your employer, or your spouse's or partner's employer, wants you to relocate, the employer is at arm's length, your original home is at least 40 kilometres farther from the new workplace than your temporary one, and you return while still with that employer or before the end of the year after the employment ends.
• Subsection 45(3), for turning a rental into your home. You elect to postpone reporting the disposition until you actually sell, and you can designate the property as your principal residence for up to four years before you moved in. This election is unavailable if capital cost allowance was deducted on the property for any tax year after 1984 up to the day the use changed.

Both elections are made by attaching a signed letter to your return describing the property and stating which subsection you want to apply. There is no form. The 45(3) election has a deadline: the earlier of 90 days after the CRA asks for it, and the filing due date for the year you sell.

4. The land is bigger than half a hectare

This matters for Alberta acreages and rural properties more than for city lots.

The land under and around your home is part of your principal residence, but normally only up to one-half of a hectare, roughly 1.24 acres. Land beyond that is deemed not to have contributed to your use and enjoyment of the home, and so is not covered by the exemption, unless you can establish that it was necessary.

The bar is genuinely "necessary", not "nice to have". The CRA's position is that the excess land must clearly be needed for the housing unit to properly fulfil its function as a residence, and not merely be desirable. Using extra land for recreation or lifestyle, keeping pets, or simply wanting to live in the country, does not make it necessary.

Two arguments do tend to work. One is access: if the location of the property means the extra land is required to get to and from a public road, it qualifies. The other is the law itself. If a municipal or provincial minimum lot size, or a severance or subdivision restriction, meant the property could not legally have been smaller in a year you owned it, then the excess is normally part of your principal residence for that year.

That second point is the one to check first on an Alberta acreage. Many rural municipalities set minimum parcel sizes well above half a hectare, and where that applies, the land goes back inside the exemption. It is worth getting the applicable land use bylaw for the years you owned the property rather than assuming the half hectare cap binds you.

There is no six year rule in Canada

Canadians search for the "six year rule" on capital gains in real numbers, and it is worth saying plainly: it does not exist here.

The six year rule is Australian. It lets an owner who moves out keep treating a dwelling as their main residence for up to six years while renting it out. Canada's closest equivalent is the subsection 45(2) election described above, and the differences matter. It runs to four years rather than six, it requires you to file an election, it bars capital cost allowance, and it requires that you designate no other property in those years.

If you moved out five years ago and have been relying on something you read about a six year window, the number you are relying on is from another country's tax system.

Reporting it, which is the part people skip

For the 2016 and later tax years, the CRA allows the principal residence exemption only if you report the disposition and designate the property on your income tax return. A sale that produces no tax still has to be reported.

You report on Schedule 3, Capital Gains or Losses, and complete Form T2091(IND), Designation of a Property as a Principal Residence by an Individual. If the property was your principal residence for all the years you owned it, or for all years except one, only page 1 of the T2091(IND) needs to be completed.

Where a legal representative is designating a property for someone who has died, the form is T1255 instead.

If you sold more than one property in the same calendar year and each was at some point your principal residence, you need a separate T2091(IND) for each one.

If you forget, ask the CRA to amend your return for that year, and do it rather than leaving it. The CRA will accept a late designation in certain circumstances, but a penalty may apply. The cost of the amendment is much smaller than the cost of losing the exemption.

One thing you cannot do

If you sell your home for less than you paid, you cannot claim the loss. A home is personal-use property, and losses on personal-use property are not deductible. The exemption protects you from tax on the way up, and the same classification denies you relief on the way down.

What to do before you list

Most sellers reading this will find their situation is the simple one, and the work is limited to remembering to file. If any of the following apply to you, get advice from an accountant before the sale closes rather than at tax time, because several of the elections and designations are easier to handle in advance:

• You have owned the property for less than 365 days.
• You have rented out the property or any part of it, at any point.
• You claimed capital cost allowance against rental income.
• You moved out and kept the property.
• You or your partner owned another home during any of the same years.
• The parcel is larger than 1.24 acres.
• You were not a resident of Canada for part of the ownership period.

The CRA's line for questions about the principal residence exemption where non-residency is involved is 1-800-959-8281.

We are a brokerage, not an accounting firm, and this guide is general information rather than tax advice for your situation. What we can do is make sure the transaction record you hand your accountant is complete and accurate: the dates, the adjusted cost base, the outlays and expenses on the sale, and the split between land and building where it matters. Getting those right at the time of sale is what makes the tax filing straightforward six months later.

If you are working out what a sale would net you before deciding whether to list, our guide to what commission actually costs in Alberta covers the other side of that calculation.