Principal Residence Exemption — The Rule That Saves Most Ontario Sellers
If you’re selling your primary residence in Ontario, you likely owe $0 in capital gains tax. This exemption—called the principal residence exemption (PRE)—is automatic for most homeowners and eliminates tax on the gain entirely.
A principal residence is a home you or a family member owned and lived in during the calendar year it was sold. You can designate only one property per family per year as your principal residence. For most Ontario sellers, this means:
- No capital gains tax on the profit
- No T2091 form filing required (in most cases)
- Full exemption applies to the entire property gain
The exemption applies regardless of how much the property appreciated. A home that sold for $850,000 and originally cost $300,000 triggers zero capital gains tax if it qualifies as a principal residence.
What Disqualifies a Property From PRE
You lose the exemption—or claim only partial exemption—if:
- The property was never your principal residence (e.g., always rented out)
- You rented out part of it (basement apartment, separate unit) for the entire holding period
- You owned it but didn’t live in it at any point during the year of sale
- You designated a different property as principal residence in a previous year and are now selling multiple properties
Verify your principal residence status with Canada Revenue Agency (CRA) guidelines before proceeding with your sale.
When Capital Gains Applies: Investment Property, Second Home, Partial Use
If your property doesn’t qualify for the principal residence exemption, capital gains tax applies to 50% of your profit (as of 2026). Understanding when this rule kicks in is critical.
Investment Properties (Rental Units)
Any property you owned and rented out—whether a house, condo, duplex, or detached unit—is subject to capital gains tax on the full sale profit. There is no exemption. If you purchased a rental property for $400,000 and sold it for $550,000, the $150,000 gain is taxable.
Second Homes and Cottages
A vacation property, cottage, or second residence does not qualify for principal residence exemption unless you lived in it as your primary address during the year of sale. Most cottage owners face capital gains tax on appreciation. A cottage purchased for $250,000 and sold for $425,000 triggers a taxable gain of $175,000—50% of which ($87,500) is included in taxable income.
Properties Rented Out Part-Time
If you rented out your home (or part of it) for any period during your ownership, you lose partial or full exemption. See the mixed-use section below for calculation details.
The 50% Inclusion Rate for 2026 Capital Gains Tax
As of June 25, 2024, Canada’s capital gains inclusion rate increased to 50% for most taxpayers. This means half of your capital gain is added to your income and taxed at your marginal rate.
How the 50% Inclusion Rate Works
Example: You sell a rental property with a $200,000 capital gain. Half of that gain ($100,000) is included in your taxable income. If your marginal tax rate in Ontario is 43.41% (top bracket), you owe $43,410 on that gain.
| Sale Price | $650,000 |
| Adjusted Cost Base | $450,000 |
| Capital Gain | $200,000 |
| Inclusion Rate (50%) | $100,000 |
| Marginal Tax Rate (43.41%) | $43,410 |
Your actual tax owing depends on your total income for the year and your provincial marginal rate. Use your 2025 notice of assessment or consult a tax accountant for precise numbers.
How to Calculate Gains — Adjusted Cost Base, Expenses, Improvements
Capital gain = Sale Price − Adjusted Cost Base (ACB)
Most sellers underestimate their ACB by forgetting to add capital improvements. Here’s what counts.
Adjusted Cost Base (ACB)
Your ACB is the original purchase price plus capital improvements minus any selling costs you deducted.
- Purchase price: What you paid (including legal fees, land transfer tax, inspections)
- Capital improvements: Renovations that add value or extend the property’s life (new roof, foundation repair, deck, HVAC replacement, kitchen overhaul)
- What does NOT count: Repairs (painting walls, replacing roof shingles on old roof), maintenance, or utilities
Capital Improvements vs. Repairs
This distinction matters. A new roof = capital improvement (20-year lifespan). Repainting the roof = repair. A new kitchen with new cabinets and counters = capital improvement. Refinishing cabinets = repair.
Keep receipts and invoices for all major work. If you claim $50,000 in improvements but can only document $20,000, CRA will reject the difference.
Selling Expenses Reduce the Gain
Real estate commissions, legal fees, and title insurance paid at sale are deductible from the selling price. They reduce your capital gain.
Example with improvements and selling costs:
| Sale Price | $725,000 |
| Less: Real Estate Commission (4.5%) | −$32,625 |
| Less: Legal Fees | −$1,200 |
| Net Proceeds | $691,175 |
| Purchase Price | $425,000 |
| Plus: Verified Capital Improvements | +$45,000 |
| Adjusted Cost Base | $470,000 |
| Capital Gain | $221,175 |
Learn more about seller closing costs so you factor them in early.
Estate Sales — Capital Gains Treatment for Inherited Property
When you inherit a property, the adjusted cost base is deemed to be the fair market value on the date of death. This eliminates capital gains tax on appreciation before you inherited it.
How It Works
Your parent owned a home worth $300,000 when they bought it in 1995. It’s worth $750,000 when they pass away. Your ACB is $750,000 (the value at death), not $300,000. If you sell it immediately for $750,000, there is no capital gain.
If you hold the inherited home and sell it later for $850,000, your capital gain is only $100,000 (the appreciation after inheritance).
Inherited Principal Residence
You may designate an inherited property as your principal residence if you moved into it and lived there. You can claim the exemption for the years you occupied it. Years before you moved in are not exempt—they follow the inherited ACB rule above.
This strategy is complex. Work with an accountant if you’re selling inherited real estate.
Mixed-Use Property — Partial Exemption Math
If you rented out part of your home (basement apartment, second unit, or rooms) for any part of your ownership, you lose the principal residence exemption for that portion and that time period.
How Partial Exemption Works
Assume you owned a duplex for 10 years, lived in one unit, and rented the other for all 10 years. The rented unit is 50% of the property. You can claim principal residence exemption for only 50% of the gain (your unit). The other 50% is taxable.
Example:
- Purchase price: $500,000
- Sale price: $750,000
- Capital gain: $250,000
- Percentage lived in (principal residence): 50%
- Exempted gain: $125,000 (no tax)
- Taxable gain: $125,000 (50% inclusion = $62,500 added to income)
Time-Based Apportionment
If you rented out one unit for 5 of 10 years, the calculation is more complex. You may claim the exemption for 5 years (lived there) and lose it for 5 years (rented out). Consult a tax professional for time-based splits.
Keep detailed records of when rental use began and ended. This directly affects your tax bill.
Reporting on T2091 — What Most Sellers Miss
If your property does NOT qualify for principal residence exemption (or qualifies only partially), you must file Form T2091 (Designation of a Property as a Principal Residence) with your tax return.
Many sellers forget this step. Failure to file the T2091 can result in CRA reassessing your return and demanding payment of tax you thought was exempt.
When You Must File T2091
- You’re claiming principal residence exemption on a property other than your home
- You own multiple properties and must designate which is principal residence
- You’re claiming partial exemption (mixed-use property)
- You’re claiming exemption for an inherited property
When You Don’t File T2091
If your primary residence was your principal residence for the entire holding period, you generally don’t file T2091. However, if you later sell another property and claim it was your principal residence for an earlier year, you must then file retroactively—which triggers CRA scrutiny.
File T2091 with your tax return for the year of sale. Keep a copy for your records.
FAQ
Q: Do I owe capital gains tax on selling my primary home in Ontario?
No, in almost all cases. The principal residence exemption eliminates capital gains tax on your primary residence, provided you owned and lived in it during the year of sale. File your tax return normally—you do not file T2091 unless you had other properties or are claiming exemption on a different property.
Q: What if I rented out a basement apartment for 3 years out of 15 years of ownership?
You lose the principal residence exemption for those 3 years (20% of your ownership). If your capital gain is $300,000, only 80% ($240,000) is exempt. The other $60,000 (20%) is taxable; 50% of that ($30,000) is included in your taxable income. Consult a tax accountant for exact calculation, as the apportionment method varies.
Q: Can I claim principal residence exemption on a cottage I never lived in?
No. To claim the exemption, you or a family member must have owned and lived in the property as your principal residence during the year of sale. A cottage you visited seasonally does not qualify unless it was your primary address on record.
Q: Do I need to report the sale if I owe zero capital gains tax?
You report all real estate sales on your tax return, even if the gain is exempt. You do not file T2091 if the property qualifies for principal residence exemption and there are no complications. Report the sale in the “Capital Gains” or real estate section of your return—CRA will see that the exemption applies automatically.
Q: What is the 50% capital gains inclusion rate, and when does it apply?
As of June 25, 2024, 50% of all capital gains are included in taxable income for most taxpayers. This means half your gain is added to your income and taxed at your marginal rate. It applies to all real estate sales that are not exempt (investment properties, cottages, rental units, and non-exempt years of mixed-use properties).
Q: Should I document capital improvements before selling?
Yes. Every dollar of verified capital improvements reduces your capital gain and therefore your tax bill. Keep invoices, receipts, and contractor statements for all major work (new roof, kitchen renovation, HVAC replacement, deck, foundation repair). If you cannot document an improvement, CRA will reject it. A new kitchen worth $30,000 saves $6,495 in tax (50% of $30,000 × 43.41% marginal rate); documentation is critical.
Q: Can I avoid capital gains tax by gifting the property to a family member?
No. CRA deems a gifted property to be sold at fair market value. You owe capital gains tax as if you had sold it, even if you received no cash. Principal residence exemption is the only legal way to avoid capital gains tax on your home.
Understand your precise home value and timeline before committing to a sale. Run your free instant home value estimate at InstantCalculator.ca — operated under RE/MAX Your Community Realty, Brokerage. Then review the Ontario selling process and book a consultation with a real estate agent who can walk through tax implications specific to your property.
 | Alex GoodmanSales Representative · RE/MAX Your Community Realty, Brokerage Alex Goodman is a Sales Representative with RE/MAX Your Community Realty, Brokerage, serving the Greater Toronto Area. He specializes in residential sales across Ontario — luxury, first-time buyer, and downsizing transactions — and maintains InstantCalculator.ca as a free public resource for Ontario homeowners researching their property value. |