Mortgage Affordability Calculator Canada 2025

Uses Canadian stress test • GDS & TDS ratios • Updated for 2025 rates

Canadian lenders use two ratios — Gross Debt Service (GDS) and Total Debt Service (TDS) — to determine how much mortgage you qualify for. This calculator applies the stress test rate to give you a realistic maximum.

Affordability Calculator

Annual Household Income ($)

Down Payment ($)

Monthly Debt Payments ($)

Monthly Property Tax Estimate ($)

Monthly Condo/HOA Fees ($)

Mortgage Rate (%)

The Canadian Mortgage Stress Test

All mortgage applicants in Canada must qualify at the higher of: their contract rate plus 2%, or 5.25%. This stress test ensures you can still afford your mortgage if rates rise.

GDS and TDS Ratios Explained

GDS (Gross Debt Service): Housing costs / gross income. Max 39%
TDS (Total Debt Service): Housing + all debts / gross income. Max 44%
Housing costs include: mortgage payment + property tax + heat + 50% of condo fees

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