Capital gains on a Canadian rental sale — what you'll actually owe

Selling a Canadian rental property triggers one of the most misunderstood tax events a landlord can face. Unlike a principal residence, every dollar of gain on a rental sale is potentially taxable — and the Canada Revenue Agency (CRA) is watching for errors. Here is exactly what you need to know before you list, close, or file.

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How Capital Gains Tax Actually Works on a Rental Property

When you sell a rental property, the CRA taxes the capital gain — not the full sale price. Your capital gain is calculated as:

Proceeds of Disposition − Adjusted Cost Base (ACB) − Outlays and Expenses = Capital Gain

Only a portion of that capital gain is included in your taxable income. For 2024 and later years, the federal inclusion rate changed under Budget 2024 proposals: the first $250,000 of capital gains realized annually by an individual remains at the ½ (50%) inclusion rate, while gains above $250,000 are included at ⅔ (66.67%). Corporations and trusts face the ⅔ rate on every dollar of gain. These changes were proposed to take effect June 25, 2024, though you should verify final legislative status with your tax advisor, as the legislation was still progressing through Parliament at the time of writing.

The included portion is then added to your other income for the year and taxed at your applicable federal and provincial marginal rates — there is no flat "rental capital gains tax rate." A landlord in Ontario with significant other income could face a combined marginal rate above 50% on the included gain.

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What Is Your Adjusted Cost Base — and Why It Changes Everything

The ACB is the foundation of your capital gains calculation. Get it wrong and you either overpay tax or attract a CRA audit.

What Goes Into Your ACB

Your ACB starts with the original purchase price and grows with legitimate additions:

Legal fees paid on purchase

Land transfer taxes (in provinces that charge them, such as Ontario's Land Transfer Tax Act)

Real estate commissions paid when you bought the property

Capital improvements (a new roof, added suite, HVAC replacement) — but not routine repairs expensed on Schedule 776 (T776) during the rental years

• Any amount you paid to have the property surveyed or appraised at purchase

Keep every receipt. The CRA can request documentation going back to the original acquisition date under subsection 230(1) of the Income Tax Act (ITA).

What Reduces Your ACB

Two items commonly reduce the ACB and catch landlords off guard:

Capital Cost Allowance (CCA) recapture — if you claimed CCA (depreciation) on the property using Class 1 (4% rate for most rental buildings), the CRA does not reduce your ACB for CCA directly. Instead, upon sale you face recapture of previously claimed CCA, reported on T2125 / T776 as fully taxable income (not a capital gain) in the year of sale.

1. Government grants or assistance received toward the property's cost must reduce your ACB under subsection 53(2) of the ITA.

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CCA Recapture: The Tax Hit Most Landlords Forget

Recapture is separate from the capital gain and is 100% taxable as ordinary income — no inclusion rate discount applies. If you claimed $40,000 in CCA over the years and sell the building for more than its undepreciated capital cost (UCC), every dollar of that $40,000 comes back as income in the year of disposition.

This is reported on Form T2091 (if a principal residence election is involved) or directly on the T776 Statement of Real Estate Rentals. Many landlords who deliberately avoided claiming CCA to sidestep this problem should note: the CRA can notionally apply CCA in certain circumstances, and there are cases where not claiming it costs more in deferred deductions than it saves.

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The Principal Residence Exemption — When It Partially Applies

If you ever lived in the property as your principal residence for one or more years before renting it out, you may be able to shelter part of the gain using the Principal Residence Exemption (PRE) under section 40(2)(b) of the ITA.

The exemption formula is:

(1 + Number of years designated as principal residence) ÷ Total years owned × Capital Gain = Exempt Portion

The "+1" in the numerator is a bonus year that helps when you transition from owner-occupant to landlord (or vice versa).

You must report the disposition and claim the exemption on Schedule 3 (Capital Gains or Losses) and Form T2091 (IND) — Designation of a Property as a Principal Residence by an Individual. Since 2016, the CRA has required this form even when the entire gain is sheltered; failure to file on time can result in a late-designation penalty of $100 per month (up to $8,000) under subsection 220(3.21) of the ITA.

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Provincial Considerations That Change Your Bottom Line

Capital gains are taxed at your combined federal and provincial rate. The included gain sits on top of all your other income, which means the marginal rate matters enormously.

Ontario: Top combined marginal rate on the included portion can exceed 53% for high earners.

British Columbia: Similar top rates; B.C. also has its own Property Transfer Tax on the buyer, but sellers face the same federal/provincial capital gains regime.

Alberta: No provincial general income surtax; the combined top rate on capital gains is lower than in most other provinces, making timing of a sale potentially more valuable here.

Quebec: Quebec administers its own provincial income tax separately via Revenu Québec; you file both a federal return (T1) and a provincial return (TP-1). Quebec's top combined marginal rate on capital gains rivals Ontario's.

• Nova Scotia, New Brunswick, PEI: Higher top combined marginal rates than Alberta; landlords in Atlantic Canada should model the tax cost carefully before selling.

If you own the property inside a corporation, the corporation pays tax on the gain at the corporate rate, but extracting after-tax cash as a dividend triggers additional personal tax — speak with a tax lawyer or CPA before assuming incorporation was a tax advantage on the way out.

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Common Pitfalls That Cost Canadian Landlords Real Money

Even experienced landlords make avoidable errors on rental property dispositions. Watch for these:

Forgetting to report at all. The CRA matches property transfer registrations to T1 filings. Unreported dispositions attract gross negligence penalties under subsection 163(2) of the ITA — up to 50% of the unpaid tax.

Mixing capital improvements with repairs. A fresh coat of paint is a current expense (deducted on T776 in the year incurred). A new deck is a capital improvement that increases your ACB. Misclassifying the two understates your ACB and overstates your gain.

Ignoring the deemed disposition on change-in-use. When you convert your principal residence to a rental (or vice versa), subsection 45(1) of the ITA treats this as a deemed sale at fair market value. You can elect under subsection 45(2) to defer this deemed disposition, but you must file the election in the year of the change.

Underestimating outlays and expenses on sale. Real estate commissions, legal fees, staging costs, and mortgage discharge penalties paid on sale all reduce your proceeds of disposition — many landlords forget to include all of these, overpaying tax as a result.

Missing the June 15 filing deadline for self-employed filers — but not the April 30 payment deadline. If you or your spouse carries on a business, your return is due June 15, but any balance owing (including capital gains tax) is still due April 30. Missing the payment date triggers daily compound interest at CRA's prescribed rate.

1. Assuming a trust or estate can use the $250,000 lower-inclusion threshold. Under the 2024 proposals, only individuals benefit from the ½ rate on the first $250,000 of gains. Most trusts face ⅔ inclusion on every dollar.

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Bottom Line

Capital gains tax on a Canadian rental property sale is not a single fixed number — it is the product of your ACB (which you control through documentation), the year's inclusion rate rules, any CCA recapture, provincial rates, and whether a principal residence designation applies to any of your ownership years. Accurate records kept from day one using purpose-built property management software dramatically reduce the risk of errors, and a CPA who specialises in Canadian real estate should review your numbers before you sign any offer to sell. The CRA's own guidance on capital gains is available in IT Folio S1-F3-C2 and Guide T4037 (Capital Gains) — both worth bookmarking long before closing day arrives.