Most capital gains articles in Canada spend three paragraphs debating a rate change that was cancelled a year ago. This one won't. The proposed 66.67% inclusion rate increase is dead — cancelled on March 21, 2025. The rate is 50% and staying there for 2026.

Here's what that means for your actual after-tax return, broken down by province and income level.

How capital gains tax actually works in Canada

Canada doesn't have a separate capital gains tax rate. Instead, 50% of your gain is added to your regular income for the year, and that combined total is taxed at your marginal rate.

The formula:

Capital gain × 50% (inclusion rate) = Taxable capital gain.
Taxable capital gain × your marginal rate = Tax owed.

So if you have a $40,000 capital gain and you're in a 40% combined marginal bracket, you add $20,000 to your income and pay $8,000 in tax. Your effective tax rate on the full $40,000 gain is 20%. That 20% effective rate is one reason capital gains are considered one of the most tax-efficient forms of income in Canada.

The province-by-province breakdown

The maximum effective capital gains tax rate (at the top combined federal-provincial bracket) varies significantly across Canada.

Alberta and Saskatchewan are the most favourable provinces for high-income earners realizing large capital gains. Someone in the top bracket in Alberta pays roughly 3.65 percentage points less than someone in Ontario — on a $500,000 gain, that's approximately $18,250 less in tax.

But: most Canadians aren't in the top bracket. At median income levels, the differences narrow considerably, and the marginal rate that applies depends on your total income including the gain.

What Ontario residents actually pay

Ontario has the most nuanced capital gains picture because of the Ontario Surtax. In the top bracket, the combined federal-provincial effective capital gains rate is 26.77%. That means on a $100,000 capital gain, the government keeps $26,770 and you keep $73,230.

At lower income levels, the effective rate drops substantially. An Ontario resident with $60,000 in employment income who realizes a $20,000 capital gain adds $10,000 to their taxable income. At a combined marginal rate of roughly 31.48% in that bracket, the tax is approximately $3,148 — an effective rate on the full $20,000 gain of about 15.7%.

What BC residents actually pay

BC's top combined rate of 26.75% is nearly identical to Ontario's. BC's top provincial rate (20.5%) applies to income over $265,545 in 2026 — a lower threshold than Alberta's top rate but higher than Ontario's entry to its top bracket.

What Alberta residents actually pay

Alberta's flat provincial income tax rate and absence of a surtax make it the most straightforward province. The top combined federal-Alberta rate on capital gains is 24.00%. Alberta residents earning $80,000 selling a $50,000 gain face a combined marginal rate on the taxable $25,000 portion of roughly 30.5% — approximately $3,813 in tax, or 7.6% on the full gain.

What Quebec residents actually pay

Quebec operates its own provincial tax system (with a 16.5% federal abatement). The combined maximum effective capital gains rate in Quebec is 26.66%. What makes Quebec different isn't the rate — it's the calculation. Quebec's TP-1 is filed separately from the federal T1, and capital gains are reported on both.

The rules that change the math entirely

The principal residence exemption. If the property you're selling was your principal residence for every year you owned it, the capital gain is fully tax-free. You still report the sale on Schedule 3 and file Form T2091, but the effective tax rate is 0%.

Capital losses. Capital losses in the current year offset capital gains dollar for dollar. Losses carry back three years or forward indefinitely. A bad 2023 crypto year can still reduce your 2026 capital gains.

TFSA and RRSP sheltering. Capital gains earned inside a TFSA are completely tax-free. Gains inside an RRSP are sheltered until withdrawal, then taxed as regular income.

The Lifetime Capital Gains Exemption (LCGE). For qualified small business shares and qualifying farming/fishing property, the LCGE is approximately $1,275,000 for 2026.

The rate change story — why it's still confusing

The proposed increase from 50% to 66.67% inclusion for gains over $250,000 was originally announced in Budget 2024. The Carney government cancelled it on March 21, 2025. The 50% rate is confirmed for 2026. Despite this, many search results and some financial articles still reference the 66.67% rate as if it applies. It doesn't.

Sources

• CRA — Capital Gains Guide
• TaxTips.ca — 2026 combined marginal rates