Principal Residence Exemption: You MUST Report the Sale

For decades, Canadians could sell their primary home and pocket the profit tax-free without telling the CRA. That changed in 2016. To close loopholes, the government now mandates that ALL principal residence sales be reported on Schedule 3 of the tax return.

The Reporting Requirement

Even though the sale is likely tax-free, you must report:

The year of acquisition
The proceeds of disposition (sale price)
The address of the property

You make this designation on Schedule 3 of your T1 return. If you don't, the principal residence exemption (PRE) is not claimed, and the CRA can reassess you for capital gains tax on the sale.

The "Plus One" Rule Explained

The PRE formula is: ((1 + Number of years designated) / (Number of years owned)) × Capital Gain.

Why the "+1"? This rule exists to help people who move in the same year. If you sell your old home in 2025 and buy a new one in 2025, you own two properties that year. The "+1" rule allows you to treat both properties as your principal residence for that transition year, ensuring you satisfy the exemption for both tax-free.

New: The Anti-Flipping Tax (12-Month Rule)

As of 2023, the CRA has introduced strict rules to combat house flipping. If you sell a residential property (including a rental property) that you have owned for less than 12 months, the profit is automatically considered business income, not capital gains.

Consequences:

You cannot claim the Principal Residence Exemption.
The profit is 100% taxable (not just 50%).
It is considered active business income, taxed at your marginal rate.

Exceptions: Life events such as death, divorce, disability, or a work relocation (40km+) may exempt you from this presumptive rule.

What Happens If I Don't Report?

If you don't report the sale and designate the property as your principal residence, the exemption is technically denied. The entire gain could become taxable.

If you realize your mistake later, you can ask the CRA to amend your return. However, they can charge a penalty of $100 for each month the designation is late, up to maximum of $8,000. Don't risk an $8,000 bill for a simple paperwork error—tell your accountant if you sold any property!

Change in Use: Rental to Personal (and vice versa)

Be very careful if you convert a home from a rental to a principal residence, or from a personal home to a rental. The CRA considers this a "deemed disposition"—meaning you sold the house to yourself at fair market value.

Example: You move out of your condo (worth $500k) and start renting it out. You must report this "sale" at $500k. If you owned it as your principal residence, the gain up to that point is tax-free. But any future increase in value from $500k upwards will be taxable capital gains.

The "Election" to Avoid Tax (Section 45(2) / 45(3))

You can file a special election to ignore this change in use. This defers the tax until you actually sell the property or die.

Section 45(2) Election: Filed when you move out and start renting. It allows you to designate the property as your Principal Residence for up to 4 more years even while you don't live there. (Note: This can be extended indefinitely if you relocated for work).
Section 45(3) Election: Filed when you move back into a rental property. It defers the gain on the rental period until ultimate sale.

Warning: These elections must be filed with your tax return for the year the change occurred. Late filing involves penalties.

Can a Cottage be a Principal Residence?

Yes! A seasonal residence like a cottage or cabin can be designated. If you own both a city home and a cottage, you have to choose which one to designate for each year. You calculate the capital gain per year for each property and designate the exemption to the property with the highest average gain per year to minimize your total tax.

Selling as a Non-Resident

If you are a non-resident of Canada for tax purposes and you sell taxable Canadian property, the rules are strict. The buyer must withhold 25% of the gross purchase price and remit it to the CRA unless you provide a Certificate of Compliance (T2062). This is a complex area, and professional advice is mandatory.

Key Takeaways

You MUST report the sale of a principal residence on Schedule 3.
Failure to report can lead to an $8,000 penalty.
The "+1" rule covers you when you move and own two homes in one year.
Watch out for the new 12-month Anti-Flipping Tax.
Changing a home from rental to personal (or vice versa) triggers a tax event.
Consider the 45(2) or 45(3) election if you rent out your home temporarily.

Frequently Asked Questions

Q: Can I have two principal residences?
A: No. A couple (married or common-law) can only designate one principal residence between them for any given year (for years after 1981).

Q: What if I build a new home?
A: You can apply the "substantially constructed" rule. If you buy land and build, you might be able to claim the exemption for the land for a period before you move in, but specific conditions apply.

Q: Do I report the sale if I lost money?
A: Yes, you should report it. Note that you generally cannot claim a capital loss on the sale of a personal-use property (like your home).