Canada mortgage qualification pressure test
See whether your mortgage passes Canada’s stress test — and what breaks first.
Compare the payment you expect to make with the higher payment used to qualify. Then isolate the first constraint: GDS, TDS, minimum down payment, insured-mortgage rules, or the mortgage-size gap.
See the qualifying-rate formula, insured-mortgage rules, and model boundaries
Rules used in this qualification estimate
- Qualifying rate: the higher of the contract rate plus 2 percentage points or 5.25%.
- Planning ratio limits: 39% GDS and 44% TDS.
- Housing costs include qualifying payment, property tax, heat, and 50% of condo fees.
- Mortgage payments use Canadian nominal rates compounded semi-annually.
- Minimum down payment is rounded up to the next whole dollar for a conservative planning result.
- Below 20% down, the estimated CMHC premium is added to the mortgage principal.
Model boundaries that can change lender treatment
The model does not underwrite credit, income documentation, rental income, self-employment, property type, insurer exceptions, provincial sales tax on insurance premiums, or lender overlays. A 30-year insured result requires either first-time-buyer or newly built-home eligibility and uses CMHC Home Start premium rates.
Build the mortgage file lenders will pressure-test
Use verified gross income and realistic required costs. Optimistic inputs can create a false pass.
Purchase price, rate, and mortgage structure
Income, debt, and lender-style housing costs
The stress payment is not the actual payment. It is the higher payment used for qualification.
TDS can fail before GDS. Required debts consume the same monthly ratio room as housing.
Fees still matter. This estimate counts 50% of monthly condo fees in housing costs.
Your mortgage qualification pressure diagnosis
The decision separates the pass line, mortgage-size gap, and first rule that constrains the file.
A $650,000 purchase that misses the planning pass line
This crawlable example uses the same formulas and default values shown in the editable form.
Result: likely fail at a 109 / 100 pressure score. Change any input and calculate for a live diagnosis.
The model will identify whether the file passes, feels tight, or breaks a rule.
Stress-tested payment
Waiting
Maximum qualifying mortgage
Waiting
Mortgage room / gap
Waiting
Qualification pressure
Waiting
How to read this file
Interpretation appears after calculation.
Main qualification risk
The strongest pressure source appears after calculation.
First rule that constrains the file
The limiting ratio or mortgage rule appears after calculation.
Repair comparison appears after calculation.
Price, down payment, debt, income, amortization, and rate sensitivity are reconciled against the same formulas.
Next checks before treating the purchase price as safe
Trace every dollar that creates qualification pressure
The table reconciles the requested mortgage, qualifying payment, housing costs, debt, and ratio limits.
| Component | Amount | Why it matters |
|---|
Compare repairs without changing the pass line
Each card changes one input, rounds the displayed recommendation first, and recalculates the final score from that displayed value.
Lower purchase price
Calculate to test this lever.
Resulting score appears here.
Increase down payment
Calculate to test this lever.
Resulting score appears here.
Reduce monthly debt
Calculate to test this lever.
Resulting score appears here.
Increase verified income
Calculate to test this lever.
Resulting score appears here.
Extend amortization
Calculate to test this lever.
Resulting score appears here.
Lower contract rate
Calculate to test this lever.
Resulting score appears here.
See the current score and strongest repair on one scale
A score at or below 100 is inside the planning ratio limits; a rule issue can still prevent a valid pass.
The map appears after calculation.
Visualize payment shock, ratio pressure, and repair strength
Charts render only after a valid calculation and use the same values shown in the table and scenario cards.
Contract payment vs qualifying payment
GDS and TDS against their limits
Pressure score after each available repair
Keep the assumptions with the qualification estimate
Save the exact inputs, formulas, decision result, ratio audit, and rounded repair scenarios in one file.
Run the stress test with lender-style inputs
Start with the purchase price and cash down. Below 20% down, the model checks Canada’s minimum down-payment tiers, estimates the applicable mortgage-insurance premium, and adds that premium to the principal being tested. Then enter verified gross income, required monthly debt, property tax, heat, and half of condo fees where applicable.
Replace listing guesses with actual housing costs
Property tax and heat feed both GDS and TDS. A small monthly understatement can erase a thin qualification buffer.
Keep the actual payment separate from qualification
The contract-rate payment helps plan cash flow. The higher MQR payment is the one used in the ratio test.
Use a higher custom qualifying rate only for conservatism
The calculator blocks a manual rate below the official MQR so a custom scenario cannot manufacture a false pass.
Read the mortgage gap before treating the price as workable
A pass means the estimated GDS and TDS are inside the planning limits and the mortgage setup clears the modeled down-payment and insured-amortization rules. It is not a promise of approval. A tight pass means the ratios are close enough to the line that a different tax bill, verified income figure, debt payment, or lender treatment could change the answer.
A fail is more useful when it names the constraint. GDS points to housing cost. TDS points to housing plus other debt. A mortgage-size gap shows how far the requested principal is above the model’s lower GDS/TDS-based limit. A rule issue means changing the ratio alone will not make the mortgage structure eligible.
Choose the repair that matches the limiting ratio
When housing cost drives GDS
Price, down payment, a valid longer amortization, or a lower contract rate can reduce the qualifying payment. Verify eligibility before relying on 30 years.
When non-housing debt drives TDS
Reducing a required car, loan, or revolving-debt payment may create more qualification room than a small price change.
When the file only barely passes
Move from qualification to cash-flow comfort. Test the actual mortgage payment, closing cash, maintenance, utilities, and a reserve for rate changes.
Three files that look affordable until the ratios are tested
The car loan breaks TDS
The housing payment fits GDS, but a required vehicle payment pushes total debt service over 44%. The debt repair card exposes the difference.
The condo fee quietly consumes room
Half the monthly condo fee is added to housing cost. A lower purchase price can still qualify for less than a fee-free property.
Insurance increases the principal being tested
With less than 20% down, the premium can be added to the mortgage. The payment is calculated on that larger insured principal, not only price minus down payment.
Input choices that overstate mortgage qualification
Using the contract payment in the ratios
Qualification uses the MQR payment, even though the contract-rate payment is the expected cash-flow payment.
Letting property tax default to zero
Property tax belongs in housing costs. This rebuild requires an explicit positive monthly figure instead of an unsupported province-wide guess.
Ignoring revolving-debt treatment
Entering only a preferred payment can understate TDS. CMHC guidance uses no less than 3% of outstanding credit-card and unsecured line-of-credit balances.
From purchase price to the 39% / 44% pressure score
Qualifying rate
Maximum of contract rate + 2 percentage points and 5.25%. A manual rate must be at least this high.
Gross debt service
(Qualifying payment + property tax + heat + 50% of condo fees) divided by gross monthly income.
Total debt service
(GDS housing cost + required monthly debt payments) divided by gross monthly income.
Pressure score
The higher of GDS / 39% and TDS / 44%, multiplied by 100. Rule issues are evaluated separately.
The mortgage-size estimate converts the lower monthly room allowed by GDS or TDS back into principal at the same qualifying rate and amortization. Scenario searches use the same calculation. After the suggested input is rounded for display, the model recalculates the resulting score so cards, charts, the table, and export remain reconciled.
Why qualification can fail even when the payment feels affordable
The Canadian mortgage stress test is a qualification check, not a personal spending plan. It asks whether the file still fits at a prescribed higher rate using gross income and standardized debt-service ratios. A household may be comfortable with the contract payment but fail the MQR calculation; another may pass the ratios but have too little cash-flow room after income tax, childcare, utilities, repairs, and savings.
NumeraHub’s role on this page is narrower than a maximum-home-price calculator: test one proposed mortgage, show the contract-to-MQR payment shock, identify the limiting ratio or rule, quantify the mortgage gap, and compare repairs that reconcile to the same model. Continue with mortgage affordability, mortgage payment, and closing costs before treating a qualification pass as a buying decision.
Canadian stress-test questions behind the pass line
Answers use the same rules and boundaries disclosed in model NH-MST-2026.08.03.
The higher of the contract rate plus 2 percentage points or 5.25%. You can test a higher conservative qualifying rate, but the calculator blocks a lower manual rate.
No. It means the modeled GDS and TDS are inside the planning limits and no modeled structure rule failed. Lenders and insurers still verify credit, income, debt, documents, and the property.
GDS includes the qualifying housing cost. TDS adds other required monthly debt payments, so vehicle, student-loan, lease, credit-card, or line-of-credit obligations can become the first constraint.
For a down payment below 20%, this model requires at least one borrower to be a first-time homebuyer or the property to be a newly built home. It then applies the CMHC Home Start premium schedule, including the 0.20% surcharge beyond 25 years.
Property tax varies materially by municipality and property. A province-wide estimate can create false precision, so this calculator requires an explicit monthly amount from the listing, municipality, or professional estimate.