Understanding Non-Capital Losses in Canada: Running a small business, operating a farm, or managing rental properties in Canada comes with financial ups and downs. From economic slowdowns to natural disasters and unexpected costs, sometimes your business expenses outweigh your income, resulting in what the Canada Revenue Agency (CRA) calls a non-capital loss.
Knowing how non-capital losses work and how they can be used to reduce your tax bill is crucial for small business owners, entrepreneurs, and self-employed Canadians.
This guide breaks down everything you need to know about non-capital losses in Canada, including how they differ from capital losses, how long you can carry them forward or backward, and what they mean for your overall tax planning strategy.
What Is a Non-Capital Loss?
A non-capital loss occurs when your allowable expenses (such as business, farming, or rental expenses) exceed your total income from those same sources in a given tax year.
Common scenarios that generate non-capital losses in Canada include:
- Startup costs exceeding early revenue
- Business slowdowns or seasonal drops
- Inventory write-downs or spoilage
- Operating a rental unit with no tenants
- Equipment failure or unforeseen repairs
- Weather-related crop loss for farmers
- Economic uncertainty is impacting customer demand
These are everyday realities for small businesses and sole proprietors in Canada, but the good news is that non-capital losses can be used to offset income and reduce taxes.
Non-Capital Loss vs. Capital Loss: What’s the Difference?
Capital losses happen when you sell a capital asset (e.g., real estate, stocks, or equipment) for less than its purchase price. For example, selling farmland or rental property at a loss.
Capital losses can only be used to offset capital gains, not employment or business income. You can:
- Carry them back 3 years
- Carry them forward indefinitely, but only against future capital gains
Non-capital losses, on the other hand, are much more flexible. You can apply them to:
- Employment income
- Self-employment income
- Rental income
- Interest and dividends
- RRSP withdrawals
This makes them a valuable tax-saving tool, especially for businesses with irregular income.
How Long Can You Carry Back a Non-Capital Loss in Canada?
According to CRA rules, non-capital losses can be carried back up to three years. This allows you to recover taxes you already paid in profitable years by applying your current-year loss to those past returns.
Example:
Let’s say your business had a strong profit in 2021 and 2022, but in 2023, you took a loss due to reduced demand. You can carry that 2023 non-capital loss back to 2022, 2021, or 2020 to generate a refund.
To do this, file CRA Form T1A – Request for Loss Carryback with your tax return.
How Long Can You Carry Forward a Non-Capital Loss?
If you choose not to carry the loss back - or if there’s no previous income to offset- you can carry your non-capital loss forward up to 20 years, depending on the taxation year.
CRA Non-Capital Loss Carryforward Periods:
- 7 years for tax years ending on or before March 22, 2004
- 10 years for tax years ending after March 22, 2004, and before 2006
- 20 years for tax years ending after 2005
This gives you a powerful long-term strategy to minimize future taxes, especially if you expect profits to grow.

What Is an Allowable Business Investment Loss (ABIL)?
An ABIL is a special type of capital loss related to investments in Canadian small business corporations.
You may be able to claim an Allowable Business Investment Loss if you lose money on:
- Shares of a small business corporation
- Debt owed to you by a small business corporation
Key ABIL Highlights:
- The loss must be on arm’s-length investments
- Only 50% of the loss is deductible (just like a capital loss)
- But you can deduct it against any source of income, not just capital gains
- Carryback: 3 years | Carryforward: 10 years
- After 10 years, any unused ABIL becomes a regular capital loss and can be carried forward indefinitely
ABILs are often reviewed by CRA, so always retain records showing that your investment became completely worthless or unrecoverable.
When Should You Carry Back a Non-Capital Loss?
Carrying losses backward helps improve your cash flow if you’ve already paid tax in prior years. It’s often a smart choice when:
- You expect lower profits shortly
- You’re preparing to sell or wind down the business
- You paid a higher marginal tax rate in past years
- You want a CRA tax refund sooner rather than later
Just remember: If you don’t claim the carryback in the same tax year the loss occurred, you lose the option and can only carry it forward.
When Should You Carry Forward a Non-Capital Loss?
Sometimes it’s more beneficial to carry the loss forward, especially if:
- Your future income is expected to be much higher
- You want to offset future tax from corporate growth
- You want to minimize tax payable over the long run
This is particularly helpful for:
- Farmers with seasonal crop yields
- Tech startups expecting delayed profits
- Real estate investors recovering from vacancy periods
The decision to carry forward or carry back should always be based on your overall tax planning goals and future income expectations.
Where to Find Your CRA Loss Carryforward Amounts
Wondering what your unused non-capital losses are?
You can find them:
- On your CRA Notice of Assessment
- Under “Tax Returns” in your CRA My Account
- By reviewing your T1 General tax return summary
Keep these records up to date so you can apply losses strategically.
Final Thoughts: Maximize Your Tax Efficiency with Non-Capital Losses
Whether you’re a Canadian small business owner, sole proprietor, farmer, or rental property investor, non-capital losses offer valuable flexibility to reduce your overall tax bill — now and in the future.
Key Takeaways:
- Deduct non-capital losses against a wide range of income
- Carry them back 3 years or forward up to 20 years
- Use Form T1A to request a carryback
- Know the difference between capital loss and ABIL
- Plan strategically for better tax outcomes
To make the most of these tax tools, always work with a qualified Canadian tax accountant who understands CRA rules, corporate tax planning, and loss optimization strategies.
Connect with Filing Taxes at 416-479-8532. Schedule an NTR engagement appointment with us and take the first step toward proper management of your finances.
Disclaimer: The information provided on this page is intended to provide general information. The information does not take into account your personal situation and is not intended for use without consultation with accounting and financial professionals. Salman Rundhawa and Filing Taxes will not be held liable for any problems that arise from the usage of the information provided on this page.

