If you sold a rental property or cashed out a large stock position after June 25, 2024, your tax bill is higher than it would have been a year earlier. Canada's capital gains inclusion rate jumped from 1/2 to 2/3 for gains above $250,000 — and the math hits harder than most people expect. Here's exactly how it works, what it costs you, and the timing strategies that still exist.

The Two-Tier System: How It Actually Works

The old rule was simple: you included 50% of any capital gain in your taxable income. Sell a stock for $100,000 profit? $50,000 was taxable. The new system adds a second tier:

• First $250,000 in annual capital gains: 1/2 (50%) inclusion rate — unchanged
• Gains above $250,000: 2/3 (66.67%) inclusion rate — this is new

The $250,000 threshold resets every calendar year. It's per individual, not per transaction. So if you sell three properties in one year with $100K, $100K, and $150K gains, the first $250K is at 50% and the remaining $100K is at 66.67%.

Before vs. After: Real Dollar Comparison

Let's say you're in Ontario, earning $120,000 salary, and you sell a rental property with a $400,000 capital gain in 2026.

That's roughly $10,750 more in tax on the same $400,000 gain. Not catastrophic, but not nothing either — especially if you're selling multiple assets in the same year.

Run your own numbers through our capital gains calculator to see the exact tax impact for your province and income level.

Province-Level Effective Rates on Capital Gains

The inclusion rate is federal, but the tax you pay depends on your province. Here's the effective tax rate on capital gains above $250,000 for someone in the top provincial bracket:

Alberta remains the most tax-friendly province for capital gains — the effective rate above $250K is 32.00% compared to over 35% in Ontario, BC, and Quebec. If you're planning a large disposition, your province of residence on December 31 determines which rates apply.

Who This Actually Hits

The $250,000 threshold means most Canadians won't notice. If you're selling individual stocks in a non-registered account, you'd need a single-year gain above $250K to trigger the higher rate. That's unusual for most retail investors.

The groups that feel this most:

• Investment property owners — A condo bought for $400K and sold for $700K in Toronto triggers a $300K gain. $50K of that hits the 2/3 rate.
• Small business owners selling their company — though the Lifetime Capital Gains Exemption (LCGE) shelters the first $1,250,000 for qualifying small business shares.
• Corporations — No $250K threshold. All corporate capital gains use the 2/3 rate from dollar one. This disproportionately affects professionals who hold investments inside a holding company.
• Cottage owners — Depending on how you've claimed the property (primary residence vs. secondary), a large gain could partially hit the higher rate.

Timing Strategies That Still Work

Spread dispositions across calendar years

The $250K threshold resets every January 1. If you're sitting on $500K in unrealized gains, selling half in December 2026 and half in January 2027 means each year's gain stays under $250K — entirely at the 50% inclusion rate. That's roughly $10,000+ in tax savings compared to selling everything in one year.

Harvest losses strategically

Capital losses offset gains before the inclusion rate applies. If you have $350K in gains and $120K in losses elsewhere in your portfolio, your net gain is $230K — all under the threshold. Use our marginal tax calculator to see how losses change your overall tax picture.

Use the principal residence exemption wisely

If you own both a house and a cottage, you can only claim one as your principal residence per year. Run the math on which property has higher annual appreciation and designate accordingly. The exemption is worth more on the higher-growth property.

Quick Decision Framework

Planning a large asset sale? Ask these three questions:

1. Is the net gain under $250K? If yes, nothing changes — you're at the old 50% rate.
2. Can you split the sale across two calendar years? If yes, you might keep both years under $250K and avoid the higher rate entirely.
3. Do you have capital losses to harvest? Losses offset gains before inclusion rates apply. Selling a losing position to offset a winning one is the most straightforward tax optimization available.

Plug your numbers into our capital gains calculator and income tax calculator to see the exact after-tax proceeds for your province and income.