How Canadian affordability is estimated
GDS and TDS show whether the payment fits your income.
A mortgage payment is only one part of the approval picture. Canadian lenders also look at housing costs, other debts, down payment, and the qualifying rate.
GDS compares housing costs against gross income. Housing costs usually include the stressed mortgage payment, property taxes, heat, and part of condo fees if applicable. TDS adds other monthly obligations such as credit-card minimums, car loans or leases, student loans, personal loans, lines of credit, other mortgage or property debt, and child or spousal support.
The calculator uses common Canadian guidelines: a 39% GDS ceiling, a 44% TDS ceiling, and a stress-test rate based on the greater of your contract rate plus 2% or 5.25%. Your lender or mortgage broker makes the final decision.





