🏠 MORTGAGE & REAL ESTATE · UPDATED 2026

Home Affordability Calculator

Find out exactly how much home you can afford in Canada — including the stress test, GDS/TDS ratios, and CMHC insurance rules.

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How Canadian lenders determine what you can afford

Canadian banks use two ratios: GDS (max 39%) — housing costs vs. income, and TDS (max 44%) — all debt vs. income. They also apply the mortgage stress test, requiring you to qualify at your rate + 2%. This calculator applies all three rules.

📋 Enter Your Details

💼 Income
$
Combined gross income before taxes
🏦 Mortgage Details
$
Min 5% on first $500K · 10% on $500K–$999K · 20% on $1M+
%
Current 5-yr fixed avg ~4.79% (Apr 2026)
First-time buyers can now amortize over 30 years
$
Approx. 0.5–1.5% of home value per year
💳 Monthly Debts
$
$
Student loans, credit cards, lines of credit
🏠 Carrying Costs
$
Enter 0 for houses / freehold properties
$
CMHC uses $150/month as a standard estimate

🏠 Maximum Home Price You Can Afford
$0
Based on GDS/TDS ratios and the mortgage stress test
Max Mortgage
$0
Home price minus down payment
Monthly Payment
$0
Principal + interest
Stress Test Rate
0%
Rate used to qualify
Down Payment %
0%
Of purchase price
GDS Ratio
0%
Max allowed: 39%
TDS Ratio
0%
Max allowed: 44%
✅

Stress Test: PASS

You qualify at the stress test rate.

📊 Debt Ratio Analysis

GDS — Gross Debt Service Ratio 0%
Housing costs ÷ gross income · Maximum allowed: 39%

TDS — Total Debt Service Ratio 0%
All debt payments ÷ gross income · Maximum allowed: 44%

🇨🇦 Canadian Minimum Down Payment Rules

Homes up to $500,0005% minimum
$500,001 – $999,9995% on first $500K + 10% on remainder
$1,000,000 and above20% minimum (no CMHC available)
First-time buyers30-year amortization available

💡 Home Buying Tips for Canadians

🧪 Stress Test Reality

The stress test means you must qualify at your rate + 2%. If you get 4.79%, you must prove you can afford payments at 6.79%. This protects you if rates rise.

💰 The 20% Magic Number

A 20% down payment eliminates CMHC insurance (which can add thousands to your mortgage) and gives you immediate equity in your home.

🏦 Shop Multiple Lenders

Even a 0.25% rate difference on a $500K mortgage saves over $15,000 in interest over 5 years. Always compare banks, credit unions, and brokers.

📋 Get Pre-Approved First

A pre-approval locks in your rate for 90–120 days and shows sellers you're serious. It also reveals your exact budget before you start house hunting.

How Canadian Lenders Determine What You Can Afford

Canadian mortgage lenders use two debt ratio tests to determine how much mortgage you qualify for: the Gross Debt Service (GDS) ratio and the Total Debt Service (TDS) ratio. The GDS ratio measures your housing costs (mortgage principal and interest, property taxes, heating, and 50% of condo fees if applicable) against your gross income — lenders generally require this to be 39% or lower. The TDS ratio adds all other monthly debt payments (car loans, credit cards, student loans) to your housing costs — this must generally be 44% or lower.

On top of these ratios, most Canadians must also pass the mortgage stress test administered by OSFI (the Office of the Superintendent of Financial Institutions). The stress test requires you to qualify at a rate 2 percentage points higher than your actual mortgage rate, or the Bank of Canada's 5-year benchmark rate, whichever is higher. This ensures you could still afford your mortgage if interest rates were to rise.

The Minimum Down Payment Rules in Canada

Canadian mortgage rules require a minimum down payment that varies based on the home's purchase price. For homes priced up to $500,000, the minimum is 5%. For homes between $500,000 and $999,999, it is 5% on the first $500,000 plus 10% on the remainder. For homes at $1,000,000 and above, the minimum is 20% — and CMHC mortgage insurance is not available for homes above this threshold. As of August 2024, first-time home buyers purchasing new construction can amortize over 30 years with a down payment under 20%, which reduces monthly payments but increases total interest paid.

CMHC Mortgage Insurance

If your down payment is less than 20%, your mortgage must be insured through the Canada Mortgage and Housing Corporation (CMHC) or a private insurer. The insurance premium ranges from 2.8% to 4.0% of the mortgage amount depending on your down payment percentage. This premium is typically added to your mortgage and amortized over the life of the loan rather than paid upfront. While mortgage insurance protects the lender, it benefits you by allowing access to homeownership with a smaller down payment and access to the lowest available mortgage rates.

Frequently Asked Questions

How is the mortgage stress test calculated in Canada?

The stress test requires you to qualify at the higher of: your actual mortgage rate plus 2 percentage points, or the Bank of Canada's 5-year conventional mortgage rate (the benchmark rate). For example, if your lender offers you a 4.79% rate, you must prove you can afford payments at 6.79%. This test applies to all mortgages in Canada — both insured (under 20% down) and uninsured (20% or more down). It effectively reduces the maximum mortgage amount you qualify for by approximately 20% compared to qualifying at your actual rate.

What counts as income for mortgage qualification in Canada?

Lenders consider employment income (full-time, part-time, and contract), self-employment income (typically averaged over 2 years using your Notice of Assessment), rental income (usually 50–80% of gross rental income), investment income, alimony and child support received, and pension income. Bonus and overtime income may be included if it is consistent over two years. Lenders will ask for pay stubs, T4 slips, NOAs, and sometimes employment letters. Self-employed Canadians often face more scrutiny and may need to document their income more thoroughly.

Does the First Home Savings Account (FHSA) help with affordability?

Yes, the FHSA significantly helps first-time buyers. You can contribute up to $8,000 per year (lifetime maximum $40,000) to an FHSA, receive a tax deduction on contributions, and withdraw funds tax-free when purchasing your first home — combining the best features of both the RRSP and TFSA. When used in combination with the RRSP Home Buyers' Plan (up to $60,000 per person), a couple could access up to $200,000 in registered savings tax-free toward a first home purchase. Use our FHSA Calculator to model your potential savings.

How does property tax affect my mortgage qualification?

Property taxes are included in your GDS ratio calculation, so higher property taxes directly reduce the mortgage amount you qualify for. Property tax rates vary widely across Canada — from roughly 0.5% in some areas of British Columbia to over 1.5% in parts of Ontario and Manitoba. When using this calculator, estimate your property taxes at approximately 1% of the home value as a starting point, then verify the actual rate for the specific municipality you are considering. Some lenders will also accept a property tax estimate from the municipality directly.

Related Canadian Calculators

🏠 Stress Test Calculator
See if you pass Canada's mortgage stress test 💳 Mortgage Payment Calculator
Calculate your monthly payments 🏛️ CMHC Insurance Calculator
Estimate your mortgage insurance premium 🔑 FHSA Calculator
Plan your First Home Savings Account