-1% rate
Qualifying at 5.50%
$675,300
$44,200 more
Canadian mortgage qualification tool
Mortgage Affordability Calculator Canada
Estimate a maximum home price using Canadian GDS and TDS ratios, the mortgage stress test, down-payment rules, CMHC insurance premiums, property costs, and monthly debts.
GDS and TDS qualification Stress-test payment Automatic CMHC premium Target-price and rate sensitivity
Qualification inputs
Build the borrower scenario
Results update automatically. Start with income and down payment, then refine property costs, debts, and qualification policy.
Step 1
Income and available cash
Use gross qualifying income before tax. Keep closing costs and emergency reserves separate from the down payment entered here.
Employment, pension, business, or other income expected to be accepted by the lender.
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Optional rental, child benefit, support, bonus, or secondary income. Enter only the amount expected to qualify.
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The engine checks insured minimum down-payment tiers and the 20% requirement where mortgage insurance is unavailable.
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Step 2
Mortgage assumptions
The maximum price is qualified at the greater of the entered rate plus the stress-test buffer or the stress-test floor.
A longer amortization can improve qualification but may increase total interest.
Step 3
Property carrying costs
Property taxes, heat, and 50% of condominium fees are included in the housing ratios.
Use a percentage while searching broadly, or enter the known annual amount for a specific property.
Estimated percentage of purchase price.
%
Use actual records where available or a reasonable estimate.
$
The engine includes 50% in GDS and TDS. Enter $0 for a freehold.
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Step 4
Monthly debt obligations
Separate revolving balances from fixed monthly payments so the engine can apply the correct treatment.
Total required monthly payments for car loans, leases, personal loans, and similar debts.
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The engine uses 3% of the outstanding balance as the monthly obligation.
$
Enter the qualifying payment for secured lines of credit or other secured obligations.
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Court-ordered or documented support obligations expected to be included by the lender.
$
Use for retained-property carrying costs, student loans, guarantees, or other lender-counted obligations not entered above.
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Advanced qualification settings
Defaults reflect common insured qualification benchmarks. Change them only when modelling a lender-specific policy.
Target home analysis
Compare a specific asking price with the maximum qualification estimate and identify the income or down-payment gap.
Enter $0 to hide the target analysis.
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Rate sensitivity
How rates can change the purchase range
Each scenario reruns the full price solver, including the stress-test floor, mortgage-insurance premium, property taxes, down-payment tiers, and debt-service ratios.
Entered rate: 4.50%
Entered rate
Qualifying at 6.50%
$631,100
Entered scenario
+1% rate
Qualifying at 7.50%
$590,700
$40,400 less
+2% rate
Qualifying at 8.50%
$555,000
$76,100 less
How the engine works
Affordability is the intersection of income, debt, cash, and policy
Mortgage affordability is not a simple income multiple. The usable purchase price depends on the interaction among qualifying income, debt obligations, down payment, mortgage-insurance eligibility, amortization, stress-test rate, property taxes, heating costs, and condominium fees. This calculator solves those variables together and explains which constraint limits the result.
Income becomes a monthly qualification budget
The calculator combines the entered gross qualifying income and converts it to a monthly amount. The selected Gross Debt Service ratio limits the share available for the qualifying mortgage payment, property taxes, heat, and 50% of condominium fees. The Total Debt Service ratio also includes other monthly debt obligations.
The mortgage is qualified at the stress-test rate
The expected contract rate is not normally the rate used for qualification. The calculator applies the mortgage stress test and uses the greater of the contract rate plus the entered buffer or the entered floor. That higher qualifying rate produces the payment used in GDS and TDS, while the result also shows the lower estimated contract payment for cash-flow planning.
Purchase price is solved iteratively
Affordability cannot be calculated accurately by dividing a payment budget by a fixed factor. As purchase price changes, the down payment, loan-to-value ratio, mortgage-insurance premium, property-tax estimate, and mortgage payment can all change. The engine repeatedly tests complete purchase scenarios until it finds the highest price that fits every selected constraint.
Mortgage insurance is added before qualification
When the down payment is below 20% and the purchase is eligible for insured financing, the estimated mortgage default insurance premium is added to the base mortgage before the qualifying payment is calculated. The premium therefore affects both the mortgage balance and debt-service ratios.
Understand the result
What each major output tells you
Maximum purchase price
This is a mathematical qualification ceiling under the entered assumptions. It is not the same as a recommended budget, a pre-approval, or a lender commitment. A practical buying range may be lower after lifestyle spending, savings goals, closing costs, maintenance, and income stability are considered.
Binding constraint
The binding constraint is the first limit reached: GDS, TDS, or available down payment. If TDS is binding, reducing counted debt may improve affordability. If GDS is binding, debt repayment may not help unless housing costs, income, rate, or amortization also change.
Contract payment versus qualifying payment
The estimated contract payment models the entered mortgage rate. The qualifying payment models the higher stress-test rate. Lenders generally use the qualifying payment for debt-service ratios, but the contractual payment is closer to the scheduled mortgage cash flow if the rate and terms are approved as entered.
Target-home gap
The target analysis tests a specific purchase price against the same mortgage-insurance, down-payment, amortization, GDS, and TDS rules. It separates an estimated income gap from a minimum-down-payment shortfall so the user can see why the target does or does not fit.
Common affordability mistakes
- Entering take-home pay instead of gross qualifying income.
- Using all available cash as down payment without reserving funds for closing costs and emergencies.
- Ignoring credit-card or line-of-credit balances because the current minimum payment appears small.
- Comparing affordability using the contract rate instead of the higher qualifying rate.
- Assuming all rental, bonus, overtime, support, or business income will be accepted at 100%.
- Using a city-wide property-tax estimate after a specific property and tax bill are available.
- Treating the maximum lender ratio as a comfortable personal spending target.
- Assuming a 30-year insured amortization is available without meeting borrower or property eligibility rules.
What lenders and brokers verify
- Employment, income amount, history, stability, and supporting documents.
- Credit score, repayment history, utilization, collections, proposals, bankruptcies, and undisclosed obligations.
- Down-payment source, account history, gifted-fund documents, and anti-money-laundering requirements.
- Property type, occupancy, condition, location, appraisal, taxes, condo status, and insurability.
- The lender's own GDS, TDS, rental-income, revolving-debt, and secured-line policies.
- Mortgage-insurer eligibility, insured price cap, amortization eligibility, and premium treatment.
- Closing costs, land transfer tax, legal expenses, adjustments, and remaining liquidity.
- Whether the requested payment remains suitable after non-lender expenses and household goals are considered.
Connected HopeWell knowledge
Continue from affordability to the complete mortgage decision
A maximum price becomes useful only when the income, down payment, property, credit, closing costs, and lender policy behind it are understood. These resources are selected specifically for purchase qualification.
Calculation pathway
Related mortgage calculators
Continue into qualification, comparison, refinancing, and prepayment analysis as each calculator is released.
Live
Mortgage Payment Calculator
Model the contractual payment, term, amortization, prepayments, and full repayment schedule.
Planned
Mortgage Stress Test Calculator
Isolate the contract-rate and qualifying-rate payment difference.
Planned
CMHC Insurance Calculator
Compare premium tiers, insured mortgage amounts, and cash required at closing.
Planned
Closing Cost Calculator
Estimate land transfer tax, legal costs, adjustments, appraisal, and other purchase costs.
Planned
Debt Consolidation Calculator
Measure payment changes and qualification impact from restructuring debts.
Planned
Down Payment Planner
Build a savings path and test minimum-down-payment thresholds across target prices.
Frequently asked questions
Mortgage affordability calculator FAQ
How much mortgage can I afford in Canada?
The result depends on gross qualifying income, monthly debts, down payment, the qualifying interest rate, amortization, property taxes, heating, condominium fees, and the lender's GDS and TDS limits. This calculator solves for a maximum purchase price rather than applying a fixed income multiple.
Why does the calculator use a higher payment than my expected mortgage payment?
Canadian mortgage qualification commonly uses the greater of the contract rate plus a buffer or a prescribed floor. The payment at that higher qualifying rate is used in GDS and TDS even though the scheduled payment at the approved contract rate may be lower.
How are credit cards and unsecured lines of credit treated?
The calculator includes 3% of the entered outstanding revolving balance as a monthly obligation. A lender may use a different method where permitted, but the entered balance should not be ignored merely because the current statement minimum is lower.
Does the affordability estimate include CMHC insurance?
Yes. When the tested loan-to-value ratio is above 80% and the purchase is eligible for insured financing, the calculator estimates the applicable homeowner premium and adds it to the mortgage before calculating the qualifying payment.
Can I use a 30-year amortization with less than 20% down?
An insured 30-year amortization is modelled as eligible when the borrower is a first-time homebuyer or the property is a qualifying new build. A conventional mortgage with at least 20% down may also permit a 30-year amortization, subject to lender policy.
Why is my maximum price lower when I add condo fees?
The calculator includes 50% of monthly condominium fees in both GDS and TDS. That reduces the monthly income available for the qualifying mortgage payment and can lower the maximum purchase price.
Is the maximum purchase price the amount I should spend?
Not necessarily. It is a qualification estimate under the entered limits. A prudent personal budget may be lower after childcare, transportation, maintenance, utilities, savings, retirement goals, income volatility, and emergency reserves are considered.
Calculation references
Educational disclaimer
This calculator provides an educational estimate only. It is not a mortgage approval, pre-approval, commitment, rate quote, credit decision, insurer decision, suitability assessment, or legal, tax, accounting, or financial advice. Lenders and mortgage insurers may use different income, debt, property-tax, heating, condo-fee, rental-income, credit, amortization, and ratio policies. Closing costs and emergency reserves are not deducted from the entered down payment. Rules, insurer premiums, qualifying rates, and lender policies can change. Have a licensed mortgage professional verify the scenario and supporting documents before making an unconditional purchase commitment.