Do I need an account to use this calculator?

No. This calculator is free and does not require signup. The figures stay in this page and are not submitted as a mortgage application.

Which payment goes into GDS and TDS?

The qualifying payment uses the greater of the contract rate plus 2% or 5.25%. The contract payment is shown separately so you can see the scheduled payment at the rate entered.

Does a ratio within the guideline mean a lender will approve?

No. The typical insured guidelines are 39% GDS and 44% TDS. Lenders, insurers and programs differ, and income, credit, property and document checks still matter. This is not a lending decision.

What is included in the insurance estimate?

The baseline premium is added to the mortgage when the down payment is under 20%. Provincial tax on the premium is not financed or included here. Confirm insurer eligibility and any program adjustments, including those for 30 years.

BrokerDam resources

GDS and TDS calculator with the stress test

Run a purchase scenario with Canadian mortgage math. No signup needed. All amounts are in Canadian dollars and payments are monthly.

Your numbers

Mortgage amount: $520,000.00
Insurance premium: $16,120.00 (3.10%)
Total financed: $536,120.00
Stress rate: 7.00%
Payment at the stress rate: $3,755.07
Payment at the contract rate: $3,118.10

The stress rate payment is used to qualify. The contract rate payment is what the client actually pays under the monthly schedule entered.

GDS 42.05%Typical 39%

Above the typical insured guideline

TDS 42.05%Typical 44%

Within the typical insured guideline

Lenders, insurers and programs differ. This is not a lending decision.

What would close the ratio gap?

Additional gross annual income needed: $9,386.74, with the other figures unchanged.

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See how a stated income and a clean application can look different once the documents and credit commitments are read together.

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What goes into GDS, TDS and the stress test?

GDS divides the qualifying mortgage payment, property tax, heat and half of condo fees by gross monthly income. TDS adds the other monthly debt payments to those housing costs.

The stress rate is the greater of the contract rate plus 2% or 5.25%. Canadian semi annual compounding is converted to a monthly payment, without rounding intermediate calculations. Read the GDS, TDS and stress test guide for the broker context.

Frequently asked questions

Do I need an account to use this calculator?: No. This calculator is free and does not require signup. The figures stay in this page and are not submitted as a mortgage application.
Which payment goes into GDS and TDS?: The qualifying payment uses the greater of the contract rate plus 2% or 5.25%. The contract payment is shown separately so you can see the scheduled payment at the rate entered.
Does a ratio within the guideline mean a lender will approve?: No. The typical insured guidelines are 39% GDS and 44% TDS. Lenders, insurers and programs differ, and income, credit, property and document checks still matter. This is not a lending decision.
What is included in the insurance estimate?: The baseline premium is added to the mortgage when the down payment is under 20%. Provincial tax on the premium is not financed or included here. Confirm insurer eligibility and any program adjustments, including those for 30 years.

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