Calculate your mortgage stress-test qualifying rate and estimate debt-service ratios for a Canadian mortgage purchase, renewal, or lender switch. The calculator uses the higher of the contract rate plus 2% or the applicable minimum qualifying rate, then compares housing costs and debts with income. It is an educational estimate, not a lender approval or a substitute for current underwriting.
Enter your own figures. Results update as you type and stay on this page.
Educational planning estimate
Enter a mortgage amount, contract rate and household income to see an estimate.
GDS compares the qualifying payment, property tax, heating and half of condo fees with gross monthly income; TDS adds other monthly debts. This is an educational planning estimate, not a pass/fail result, an approval, a qualification decision, or a lender offer. Lenders apply their own debt-service limits, documentation and underwriting.
Get Broker ReviewEnter the mortgage amount, contract rate, amortization, household income, property tax, heating, condo fees and other monthly debts on this page. The calculator uses the higher of the contract rate plus 2 percentage points or 5.25% as the qualifying rate, estimates the monthly payment at that rate with Canadian semi-annual compounding, then estimates GDS and TDS. Results are educational planning estimates, not an approval.
The qualifying payment plus estimated GDS and TDS using the income, housing costs and debts you enter.
Homebuyers, renewing borrowers and lender switchers who want a planning estimate before a lender reviews their file.
Online calculators are estimates. A lender's underwriting, documentation and product rules determine the actual result.
Enter the mortgage amount, contract rate, amortization, household income, property tax, heating, condo fees and other monthly debts on this page. The calculator uses the higher of the contract rate plus 2 percentage points or 5.25% as the qualifying rate, estimates the monthly payment at that rate with Canadian semi-annual compounding, then estimates GDS and TDS. Results are educational planning estimates, not an approval.
Renewals with the same lender normally do not require a new stress test. For an uninsured straight switch between federally regulated lenders, OSFI no longer prescribes the minimum qualifying rate, but the new lender still applies its own underwriting. Changes to the loan amount or amortization can alter treatment. Confirm current requirements before relying on an estimate.
Review the current OSFI minimum qualifying rate, OSFI's uninsured straight-switch guidance, and the Financial Consumer Agency of Canada mortgage guidance. Rules and lender policies can change, so check the sources again when applying.
Rule references reviewed September 11, 2026. Calculator interface updated September 29, 2026.