A simple guide to how it works, the traps to avoid, and how real Canadians can use it to lower taxes
If you’ve ever looked at your non-registered investments and thought, “Wow… this stock is deep in the red,” you might be surprised to learn that those losses could actually help you save taxes.
This strategy has a name: tax loss harvesting. And no, it’s not shady. It’s part of the Income Tax Act and something everyday Canadian investors can legally use.
Below is the full breakdown of how it works, when it works, and how to not accidentally mess it up.
What Tax Loss Harvesting Actually Is
Tax loss harvesting simply means:
You intentionally sell an investment that has dropped in value so you can realize a capital loss. That loss can reduce the tax you pay on your capital gains.
Example:
You made a $20,000 gain on one stock
You’re sitting on a $15,000 loss on another
Selling the losing stock means you now only pay tax on the net gain of $5,000.
You don’t get a tax refund from losses alone—losses only offset gains.
Where You Can (and Cannot) Use This Strategy
Tax loss harvesting only works in non-registered investment accounts, such as:
✓ Cash / Margin account
✓ Non-registered brokerage account
✓ Joint investment account
It does not work inside:
𐄂 TFSA (losses disappear and are NOT deductible)
𐄂 RRSP / RRIF
𐄂 RESP
𐄂 FHSA
If you sell at a loss inside one of these plans, you get no tax benefit at all.
How Capital Losses Work in Canada
In Canada, all capital gains and capital losses fall into the same tax bucket, no matter where they come from. This means a capital gain from selling a property and a capital loss from selling shares or other investments can offset each other.
Here’s the general rule:
50 percent of your net capital gains are taxable
50 percent of your capital losses are allowable (CRA’s term)
And here’s the key part most people don’t know:
A capital loss from one type of asset (like stocks) can offset a capital gain from another type of asset (like real estate).
Different asset classes… same capital gains bucket.
So if you sold a rental property this year and triggered a large capital gain, you can sell losing investments in your non-registered account and use those losses to directly reduce the tax on that property gain.
Here’s how the losses can be applied:
- Use the loss against gains this year
This is the first priority. You must offset the current year’s capital gains before anything else.
- Carry back up to three years
If you didn’t have gains this year but did in past years, you can apply the loss retroactively.
Use Form T1A – Request for Loss Carryback to recover tax previously paid.
- Carry forward forever
If there are no gains to offset now or in the past three years, unused capital losses never expire. They stay on your CRA account until you have future capital gains to apply them against — again, from any asset class.
The Big Trap: The Superficial Loss Rule
One of the biggest traps in tax loss harvesting is the superficial loss rule. This rule doesn’t just look at what you do. It also looks at what you OR your affiliated person or entity does.
In other words, even if you don’t repurchase the investment, your loss can still be denied if anyone affiliated with you buys back the same or identical investment within the 30-day window.
So the superficial loss rule applies if BOTH of these happen:
You OR an affiliated person/entity sells an investment at a loss.
You OR an affiliated person/entity buys back the same or identical investment
within 30 days before or after the sale, AND
you OR the affiliated person/entity still own it 30 days after the repurchase.
If those conditions are met, the capital loss is denied and added back into the adjusted cost base instead.
This is why understanding who counts as “affiliated” is so important.
Who Counts as “Affiliated”?
The term “affiliated” has a specific meaning under the Income Tax Act. It includes anyone or anything that CRA considers to be effectively “you” for tax purposes.
Here’s the practical breakdown:
- YOU (the taxpayer)
This includes all accounts registered under your SIN:
Personal non-registered account
TFSA
RRSP/RRIF
Corporate account if you control the corporation
If any of those accounts repurchase the investment, you can trigger the superficial loss rule.
- Your spouse or common-law partner
This is the one most Canadians miss.
Example:
You sell RBC shares at a loss.
Your spouse buys RBC shares the next day in their account.
CRA considers that an affiliated repurchase → loss denied.
Even though YOU didn’t do anything.
- Corporations you control
If you own more than 50%, directly or indirectly, the corporation is considered affiliated with you.
Example:
You sell TD stock at a loss personally.
Your holding company buys TD stock the next day.
Loss = superficial.
- Trusts where you are the main beneficiary
This includes:
Your RRSP
Your TFSA
A family trust where you or your spouse are majority beneficiaries
Example:
You sell BCE shares at a loss in your taxable account.
Your RRSP automatically reinvests in BCE shares due to a DRIP.
Loss denied → because your RRSP is affiliated.
Why This Matters
Because the rule applies across ALL affiliated persons and entities, you need to monitor:
Your spouse’s accounts
Your RRSP/TFSA automatic contributions
Corporate investment accounts you control
DRIPs and automatic reinvestments
Portfolio rebalancing inside registered accounts
Transfers between accounts
Consolidation moves at year-end
The superficial loss rule is far broader than most people realize — and it is the #1 reason tax loss harvesting fails.
What Counts as “Identical Property” in Canada?
The CRA uses a very strict definition.
Two properties are identical if they are the same in all material respects — meaning there is no meaningful difference between them.
This matters because if you sell an investment at a loss and then buy back an identical investment within the superficial loss window, the loss is denied.
Here are Canadian-specific examples to make this clear:
Examples of Identical Property (Loss Will Be Denied)
- Same ETF from the same provider
Selling Vanguard FTSE Canada All Cap Index ETF (VCN)
Buying back VCN
→ Identical.
- Same bank stock
Selling Royal Bank of Canada (RY)
Buying RY again in any account (yours, spouse, RRSP, TFSA)
→ Identical.
- Same crypto token
Selling Bitcoin
Buying Bitcoin again
→ Identical.
- Same mutual fund series from the same company
Selling RBC Canadian Dividend Fund – Series A
Buying back the exact same Series A fund
→ Identical.
Examples of NOT Identical (Loss Generally Allowed)
- Similar Canadian ETFs from different providers
Sell VCN (Vanguard FTSE Canada All Cap Index ETF)
Buy XIC (iShares S&P/TSX Capped Composite Index ETF)
→ Not identical, even though they track almost the same market.
- ETFs with different mandates
Sell XEQT (iShares Core Equity ETF Portfolio)
Buy VGRO (Vanguard Growth ETF Portfolio)
→ Not identical because the asset mix is different.
- Different bank stocks
Sell BMO
Buy TD
→ Not identical.
- Different crypto assets
Sell Bitcoin
Buy Ethereum
→ Not identical.
- Different classes of mutual funds
Sell RBC Canadian Dividend Fund — Series A
Buy RBC Canadian Dividend Fund — Series F
→ Likely NOT identical because they have different fee structures.
Easiest Ways to Avoid Violating the Superficial Loss Rule
Option 1: Wait 31 days
After selling at a loss, wait 31 days before buying back the same investment.
Option 2: Buy something similar but not identical
This way, you keep market exposure without triggering the rule.
Canadian example:
Sell VCN
Buy XIC instead
→ Keeps you invested in the Canadian market without violating the rule.
Another example:
Sell BMO Canadian Dividend ETF (ZDV)
Buy iShares Canadian Select Dividend ETF (XDV)
→ Similar mandate, but not identical.
Settlement Timing (Important for Year-End Planning)
To count a tax loss for the 2025 tax year:
Your sale must settle before December 31
Most trades settle T+1 (one business day later)
In 2025, your last trading date should be December 30
Rule of thumb:
Make tax loss harvesting trades no later than December 30.
Allowable Business Investment Loss (ABIL)
Most Canadians won’t use this, but it’s powerful.
An ABIL is a special type of loss from:
Selling shares or debt of a qualifying small business corporation
ABILs can offset all types of income, not just capital gains.
If unused:
First 10 years → treated as a non-capital loss
After 10 years → becomes a regular net capital loss
Carry forward indefinitely as a net capital loss
When Tax Loss Harvesting Makes Sense
✓ You have (or expect) capital gains
✓ You want to clean up underperforming investments
✓ You want to rebalance your portfolio
✓ You want to reduce tax on past gains (carry-back)
When It Does NOT Make Sense
𐄂 You’re triggering a superficial loss
𐄂 You plan to repurchase right away
𐄂 The stocks that you are losing money on are held in your registered accounts
𐄂 The tax savings are smaller than trading fees
𐄂 You only want “a loss for tax purposes” but still love the investment and can’t find a replacement
𐄂 You have no gains today and don’t expect gains soon
Real-Life Example
You bought Stock A for $25,000.
It is now worth $10,000.
Loss = $15,000.
You also sold another investment this year for a $20,000 gain.
Net gain = $20,000 – $15,000 = $5,000
Taxable (50%) = $2,500
Without loss harvesting, you would have been taxed on a $20,000 gain (taxable $10,000).
Practical Strategy For Canadians
Here’s the real workflow I’d use with clients:
Step 1: List all gains for the year
Example:
- Sold cottage
- Sold rental property
- Sold investments
- Sold private shares
Exercised stock options
Step 2: List all losers sitting in your portfolio
Then calculate the potential loss.
Step 3: Check the superficial loss risk
If yes → adjust.
Step 4: Sell the losers
Decide whether you want to:
Buy it back after 31 days
Buy a similar ETF
Stay out of the market briefly
Step 5: Decide whether to carry loss back
If you paid tax in the last three years, tax refunds are possible.
Quick Q&A
Q: Can I harvest losses on crypto?
Yes. Crypto is treated as a commodity. But superficial loss rules apply.
Q: Can I sell the stock in my personal account and buy it back in my spouse’s account?
No. Spouse = affiliated.
Q: Can I sell in personal and buy in corporate account?
If you control the corporation → affiliated → loss denied.
Q: Do superficial loss rules apply to ETFs?
Yes. Identical ETFs = loss denied.
Key Takeaways
Tax loss harvesting reduces tax on gains, not overall income.
Avoid buying the same investment 30 days before or after selling it.
Losses carry forward forever or back three years.
Registered account losses cannot be used.
Only real, realized losses count—paper losses don’t.
Next Steps
We help everyday Canadians navigate the confusing world of taxes—so you can keep more of what you earn. Want to make sure you’re not leaving money on the table? Book a consultation with my team today.
Until next time, happy Canadian Real Estate Investing.
Cherry Chan, CPA, CA
Your Real Estate Accountant
