A capital loss occurs when you sell a capital asset for less than its adjusted cost base (ACB).
Common examples include:
✔ Stocks
✔ ETFs
✔ Mutual funds
✔ Investment real estate
✔ Cryptocurrency
✔ Other investment assets
The rules are governed by the Canada Revenue Agency (CRA).
Important: Only 50% of a capital loss is deductible. This is called an allowable capital loss.
Capital losses can only offset:
👉 Capital gains
They cannot reduce:
❌ Employment income
❌ Business income
❌ Rental income
❌ Interest income
If you do not have capital gains in the current year, you may carry the loss to another year.
You can apply a current-year capital loss against capital gains from any of the previous 3 tax years.
This may result in:
✔ An immediate tax refund
✔ Recovery of taxes previously paid on capital gains
You must file the appropriate adjustment request with the CRA to apply the carryback.
If you have no current or prior capital gains:
✔ You can carry capital losses forward indefinitely
✔ They can be applied in any future year when you realize capital gains
There is no time limit for carrying capital losses forward.
In 2025:
You can:
Proper planning could generate significant refunds.
✔ The loss must be realized (you must actually sell the investment).
✔ Documentation of the transaction is essential.
✔ The “superficial loss rule” may deny your deduction in certain cases.
If you sell an investment at a loss and:
👉 The loss may be denied temporarily.
This is one of the most commonly reviewed areas by the CRA.
Capital loss planning can:
✔ Offset large capital gains (such as selling investment property)
✔ Reduce year-end tax exposure
✔ Improve long-term portfolio tax efficiency
✔ Support estate and retirement planning
Year-end tax planning before December 31 can be especially valuable.
❌ Not realizing losses strategically
❌ Ignoring the superficial loss rule
❌ Failing to apply carrybacks when beneficial
❌ Losing track of accumulated capital losses
Tax planning requires coordination with your broader financial strategy.
At Toro Accounting, we:
✔ Review your investment portfolio
✔ Calculate allowable capital losses accurately
✔ Evaluate carryback vs. carryforward strategies
✔ Coordinate with your overall tax planning
✔ Reduce CRA reassessment risk
Losses don’t have to mean wasted opportunities — with proper planning, they can reduce your overall tax burden.
If you experienced investment losses and want to optimize your tax strategy: