What Is the Mortgage Stress Test?
The stress test requires lenders to verify that a borrower can afford mortgage payments not at their actual contracted rate, but at a higher qualifying rate. This qualifying rate is the greater of:
- The Bank of Canada's minimum qualifying rate (currently 5.25%), or
- Your actual contract rate plus 2%
In a higher interest rate environment, the "contract rate plus 2%" test typically applies. For example, if your lender offers you a rate of 5.0%, you must qualify at 7.0%.
Who Does the Stress Test Apply To?
The stress test applies to all federally regulated mortgage lenders in Canada, which includes all major banks. It applies regardless of your down payment size — even if you are putting 20% or more down and do not require CMHC mortgage insurance.
Credit unions and some alternative lenders are provincially regulated and may not be required to apply the stress test, though many choose to do so voluntarily.
How Does the Stress Test Affect How Much You Can Borrow?
The stress test effectively reduces your maximum purchase price by approximately 20% compared to what you would qualify for without it. This is a significant impact and one that catches many first-time buyers off guard.
Lenders use two key debt ratios to assess your application:
- Gross Debt Service (GDS) ratio: Your monthly housing costs (mortgage, property taxes, heat, and 50% of condo fees) should not exceed 39% of your gross monthly income.
- Total Debt Service (TDS) ratio: All of the above plus other debt payments (car loans, student loans, credit cards) should not exceed 44% of your gross monthly income.
A Practical Example
Suppose you and a partner earn a combined household income of $140,000. Your lender quotes you a 5-year fixed rate of 4.99%. Your qualifying rate under the stress test is therefore 6.99% (4.99% + 2%).
At that qualifying rate, with a 25-year amortization, a household income of $140,000 might qualify you for a mortgage of approximately $700,000–$750,000, depending on existing debt levels and property taxes. Without the stress test, the same income could potentially support a mortgage $150,000–$200,000 higher.
Maximum Mortgage Estimates by Income
| Household Income | Estimated Max Mortgage |
|---|---|
| $80,000 | ~$330,000 – $370,000 |
| $120,000 | ~$490,000 – $550,000 |
| $160,000 | ~$650,000 – $730,000 |
| $200,000 | ~$810,000 – $910,000 |
Estimates only. Actual amounts depend on existing debts, amortization period, and current rates.
Tips for Passing the Stress Test
- Reduce existing debt before applying. Credit card balances and car loans directly reduce how much mortgage you qualify for.
- Increase your down payment. A larger down payment reduces the required mortgage amount.
- Consider a longer amortization. A 30-year amortization (available for certain buyers) lowers monthly payments and can help you qualify.
- Apply with a co-borrower. Adding a second income to the application increases your qualifying amount.
- Shop around. Different lenders may offer different contract rates, which directly affects your qualifying rate.
Find out exactly how much you qualify for
Our free Mortgage Stress Test Calculator is updated for 2026 OSFI rules — no signup required.