DeedWorthGuide · Quebec

Real Estate Capital Gain in Quebec: How to Calculate It (and What You'll Pay in 2026)

Q: Are the capital gain and recapture of CCA the same thing?

No. Recapture applies to the capital cost allowance claimed and is taxed at 100%. The capital gain applies to the appreciation beyond the purchase cost and is taxed at 50%. Both can apply to the same sale.

Selling a rental property for more than you paid triggers capital gains tax. But between the sale price on paper and the amount actually taxable, there are several steps that many investors get wrong — often to their own detriment. This guide details the exact formula, what you can add to your cost to reduce the tax, and how the capital gain combines with recapture of CCA.

The basic formula

In Quebec as at the federal level, the capital gain on a property is calculated as follows:

Capital gain = (Sale price − Selling costs) − Adjusted cost base (ACB)

Then:

Taxable amount = Capital gain × 50%

The inclusion rate remains 50% in 2026. The increase to 66.67% proposed in the 2024 federal budget was cancelled on March 21, 2025; there is no $250,000 threshold. Half of your gain is therefore added to your income for the year and taxed at your combined Quebec-federal marginal rate.

The adjusted cost base (ACB): your best ally

The ACB is the total tax cost of your property — and the higher it is, the lower your taxable gain. Too many investors reduce it to the purchase price alone. In reality, the ACB also includes:

the initial purchase price;
the land transfer duties (welcome tax) paid on acquisition;
the legal and notary fees on purchase;
the survey, appraisal, and inspection fees tied to the acquisition;
capital improvements: major renovations that durably increase value (roof, windows, expansion, full renovation of a unit).

Keeping all these supporting documents for the entire holding period can mean thousands of dollars less tax at resale. It's one of the simplest and most overlooked optimizations.

Current expenses vs capital expenses: the distinction that matters

Not all expenses are treated the same way, and the confusion is costly:

A current expense (repair, maintenance, painting, like-for-like replacement) is immediately deductible from your rental income for the year.
A capital expense (an improvement that extends the useful life or increases the value) is not deductible from rental income; it is added to the property's capital cost and therefore to the ACB.

Repairing a stair tread is current; rebuilding the whole staircase in superior materials is capital. Classifying these expenses properly over the years ensures your improvements correctly raise your ACB on the day of sale.

A worked example

Take a simple illustrative case, with no CCA claimed (we come back to that next).

Purchase price: $500,000
Welcome tax + notary fees on purchase: $12,000
Roof redone (capital improvement): $18,000
ACB = $530,000
Sale price: $700,000
Brokerage commission + selling costs: $28,000
Net sale price = $672,000

Capital gain = $672,000 − $530,000 = $142,000 Taxable amount = $142,000 × 50% = $71,000 added to your income for the year.

At a 45% marginal rate, the tax on the gain is about $32,000. Without adding the $30,000 of welcome tax and roof to the ACB, the taxable gain would have been $15,000 higher — roughly $6,750 in extra tax.

Watch out: the capital gain doesn't come alone

If you claimed capital cost allowance (CCA) during the holding period, the sale triggers two separate taxes:

Recapture of CCA, taxed at 100%, on the CCA you had deducted.
The capital gain, taxed at 50%, on the appreciation beyond the original cost.

A common mistake is to project only the capital gain and forget the recapture, which can be a large share of the bill. For the details of this mechanism, see our dedicated guide to recapture of CCA.

The 365-day anti-flip trap

If you hold the property for less than 12 months before reselling, the regime changes completely: the anti-flip rule (in force since January 1, 2023) reclassifies the profit as business income taxed at 100%. It is then no longer a capital gain at 50%, and no principal residence exemption applies. Short holding is therefore heavily penalized — a parameter to build in from the moment of purchase if you're considering a quick resale.

The owner-occupied plex case

If you live in one of a plex's units, the portion you occupy as a principal residence may qualify for a partial principal residence exemption, while the rental portion remains subject to the capital gain. The split is generally prorated by floor area. It's a notable advantage of the "owner-occupant" model, but one that requires a rigorous allocation.

Why model the exit tax before buying

A property's real return isn't measured by the gross gain, but by the net after-tax gain — once recapture, the 50% taxation of the capital gain, and selling costs are subtracted. These variables interact and depend on your marginal rate in the year of disposition.

The DeedWorth engine projects exactly this result: it computes the ACB, recapture of CCA, and net capital gain within a 10-year projection, so you can compare your resale scenarios after tax, not just on the sticker price. Analyze a property with DeedWorth →

FAQ

What percentage of a capital gain is taxable in Quebec? 50% of the capital gain is taxable and is added to your income for the year, at your marginal rate. The 50% inclusion rate is maintained in 2026.

What is the adjusted cost base (ACB)? It's the property's total tax cost: purchase price, land transfer duties (welcome tax), legal fees on acquisition, and capital improvements. The higher the ACB, the lower the taxable gain.

Can I deduct the welcome tax from my capital gain? Yes, indirectly: the land transfer duties paid on purchase are part of the adjusted cost base, which reduces the capital gain at resale accordingly.

Are the capital gain and recapture of CCA the same thing? No. Recapture applies to the CCA claimed and is taxed at 100%; the capital gain applies to the appreciation beyond the purchase cost and is taxed at 50%. Both can apply to the same sale.

What happens if I sell less than a year after buying? The 365-day anti-flip rule reclassifies the profit as business income taxed at 100%, with no capital gain treatment and no principal residence exemption.