Self-employed refinance in Canada: why your tax return matters more than your revenue
When you're self-employed, a refinance often comes down to the income on your tax return, not your business revenue. Here's what lenders ask for, how they read your income, a worked example of how add-backs can change the result, and what to do if a bank says no.
A self-employed refinance in Canada works like any refinance: you can usually borrow up to 80% of your home's appraised value and most borrowers must pass the stress test. The difference is how lenders read your income. FCAC says self-employed borrowers may need Notices of Assessment for the past two years, and OSFI expects federally regulated lenders to obtain proof of income such as the NOA and T1 General plus business documents. Because many business owners write off expenses, the income lenders see can be much lower than revenue. Some lenders add back certain non-cash or personal-use deductions. In our example, $110,000 of reported income qualifies for about $431,800 at the stress-test rate, while $125,000 after $15,000 of add-backs qualifies for about $514,700, enough for the $480,000 refinance.
Key takeaways
- →The basic refinance rules still apply: up to 80% of your home's appraised value, and the stress test for most new uninsured mortgages.
- →Your tax return drives the result. FCAC says self-employed borrowers may need two years of Notices of Assessment; OSFI expects lenders to verify income with documents like the NOA and T1 General.
- →Write-offs cut both ways. Deductions that lower your tax can also lower the income a lender uses.
- →Some lenders add back certain deductions, which can change how much you qualify for.
- →If a bank says no, alternative lenders may look at bank statements or business financials, usually at a higher cost.
Short answer: A self-employed refinance in Canada follows the same core rules as any refinance. You can usually borrow up to 80% of your home's appraised value [4], and most new uninsured mortgages must pass the stress test at the greater of your contract rate plus 2% or 5.25% [3]. What's different is how the lender reads your income. FCAC says self-employed borrowers may need Notices of Assessment (NOAs) from the Canada Revenue Agency for the past two years [1], and OSFI's B-20 guideline says federally regulated lenders should obtain proof of income, such as the NOA and T1 General, and relevant business documentation [2].
This guide covers what lenders ask for, how write-offs affect what you qualify for and what to do if the first answer is no. For an overview of how we help business owners, see our self-employed mortgage page.
What lenders ask for when you're self-employed
| Document | What it shows |
|---|---|
| NOAs for the last two years | Your assessed income and that taxes are filed [1] |
| T1 General returns | The breakdown of your income sources [2] |
| Business documents | In our experience: articles of incorporation or a business licence, GST/HST returns, business bank statements or financial statements [2] |
| Proof of no tax owing | In our experience, lenders want to see CRA balances paid or on a payment plan |
| Mortgage and property details | Current mortgage statement, property tax bill and home insurance |
Rows marked "in our experience" reflect common lender requests; each lender sets its own list.
Incorporated? In our experience, lenders may also ask for corporate financial statements and look at salary and dividends you pay yourself, and some will consider income kept in the company.
Why your tax return matters more than your revenue
Most refinances are uninsured, because you can't borrow more than 80% of your home's value [4]. That means each lender applies its own self-employed policy within OSFI's B-20 expectations [2]. Many start from the income on your T1 or NOA, often averaged over two years. If you've written off a lot of expenses, that number can be well below what the business brings in.
Some lenders add back certain deductions. For comparison, CMHC's self-employed program for insured purchases allows income to be grossed up by 15% or certain deductions, such as business-use-of-home, motor-vehicle expenses and capital cost allowance, to be added back [5]. In our experience, uninsured lenders take a range of approaches, so the same file can qualify differently at different lenders.
Self-employed and thinking about a refinance? A licensed 8Twelve agent can review your NOAs and business documents and match you with lenders whose income policies fit, across 65+ lenders, OAC. Talk about a self-employed refinance
Worked example: how add-backs can change the answer
You own a home appraised at $850,000 and owe $380,000. You want to refinance to $480,000 to pay off a business line of credit and renovate. That's about 56% of value, well inside the 80% limit of $680,000 [4]. The question is income.
Your T1 shows $110,000 of self-employment income. You claimed $15,000 in capital cost allowance, business-use-of-home and vehicle expenses. Property tax is $450 a month, heating $120 and a vehicle lease $600. The lender qualifies you at 6.39% (an assumed 4.39% contract rate plus 2%) [3] over 25 years, with assumed debt ratio limits of 39% GDS and 44% TDS.
| Income the lender uses | Most you could borrow at the stress-test rate | Covers the $480,000 refinance? |
|---|---|---|
| $110,000 (as reported) | about $431,800 | No, short by about $48,200 |
| $125,000 (with $15,000 added back) | about $514,700 | Yes |
Assumptions for illustration, not offers. Debt ratio limits and add-back policies vary by lender. Calculated in Python with semi-annual compounding.
What it shows: the same borrower, home and loan can get a different answer depending on how a lender treats deductions. Our guide to GDS and TDS ratios explains the ratio math in more detail.
Step by step: refinancing when you're self-employed
- Pull your last two NOAs from your CRA My Account, and make sure taxes owing are paid or on a plan.
- Gather your T1 Generals and business documents [2].
- Know your numbers: your balance, an estimate of value and how much you need.
- Talk to a broker before applying to several lenders, so your file goes to lenders whose income policies fit.
- Expect an appraisal to confirm value, plus legal and possibly penalty costs. Our guide to refinance costs breaks them down.
If a bank says no
A decline from one lender isn't the end. In our experience:
- Another prime lender may read your income differently.
- Alternative (B) lenders may use bank statements or business financials, at a higher rate and often with a lender fee. Our guide to B-lender mortgages explains how they work.
- Waiting for your next NOA can help if this year's income is higher.
Private lending is usually a short-term last resort with higher costs, and should come with a clear exit plan.
From our desk: business owners are often surprised that a strong year in revenue doesn't show up in the mortgage math. A conversation with your accountant about how you report income, a year before you need to borrow, can make a real difference.
A self-employed refinance follows the usual 80% and stress-test rules, but your tax return decides how much you can borrow. Gather two years of NOAs, understand how lenders treat your deductions and compare lenders before you apply.
Next step: check the rules in our guide to mortgage refinance requirements in Canada, or read our complete mortgage refinance guide.
This article is for general information only and isn't financial, legal or tax advice. Rates, products and terms change without notice and are available on approved credit (OAC). The rate and terms you qualify for depend on your individual financial situation, including credit, income, property and loan-to-value. "Best rates" means the most suitable options available for your situation, not a guarantee of the lowest rate. Example rates and payments are for illustration only, as of October 2026, and are not an offer. 8Twelve Mortgage arranges mortgages through 65+ lenders and does not lend directly. Licensed across Canada — see our licences.
Examples are for illustration only, as of November 1, 2026, and are not offers. Income policies, debt ratio limits and costs vary by lender; approval is OAC. This isn't tax advice; talk to your accountant about how you report income. Rules checked against FCAC, OSFI and CMHC on November 1, 2026. 8Twelve does not lend or fund mortgages; we arrange them with third-party lenders.
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Last reviewed on November 4, 2026