Use Canadian rate conversion
Fixed mortgage rates are commonly quoted as nominal annual rates compounded semi-annually. The calculator converts that convention into the selected payment-period rate.
Canadian purchase and renewal analysis
Model semi-annual compounding, mortgage insurance, renewal shock and debt-service ratios.
Separate the contractual term from the full amortization, compare monthly and biweekly payments, test the current qualifying-rate rule and see how prepayments affect the balance carried into renewal.
Decision guide
How to evaluate a Canadian mortgage
Canadian mortgages combine an amortization that may last decades with a contractual term that often ends much sooner. Renewal risk, payment frequency and prepayment privileges deserve their own analysis.
Term is not amortization
The term governs the current contract. At renewal, the outstanding balance is repriced over the remaining amortization, so a higher rate can change the payment materially.
Insurance and qualification
A high-ratio purchase usually carries mortgage default insurance that protects the lender. Qualification uses debt-service measures and a higher stress-test rate.
Stress test changes
The model uses the current greater-of rule: contract rate plus 2 percentage points or 5.25%. Regulators and lenders can change or exceed this minimum.
GDS and TDS are screening ratios
The worksheet includes mortgage payment, property tax, heating and half of condo fees for GDS, then adds entered debts for TDS. Underwriting definitions may differ.
Read the disclosure box
Compare principal, APR, term, amortization, payment frequency, cost of borrowing, insurance, prepayment privilege and penalty language in the lender disclosure.
Simple by design
Three steps to a clearer number.
Enter your details
Use realistic values in each field. You can change them anytime.
Calculate instantly
The formula runs locally, so there is no account or waiting time.
Use the result
Treat the answer as a practical estimate for your next decision.