Estimate a Canadian mortgage with current insured-mortgage rules, provincial premium tax, and payment-frequency trade-offs.
This calculator is built for common Canada-specific questions such as minimum down payment, CMHC-style insurance cost, whether a 30-year insured amortization is available, how weekly, biweekly, and accelerated payments change the payoff path, and what stress-test payment a lender may review.
Canadian mortgage conventions This worksheet uses the Canadian nominal annual rate converted with semi-annual compounding,
checks the current minimum down-payment rules, adds CMHC-style insurance premiums when the
down payment is under 20%, and shows any provincial sales tax due on that premium at closing.
Display currency
Switch the displayed currency before entering amounts. The rules, insurance thresholds, and stress-test reference remain Canadian.
Quick examples
Minimum down payment Current worksheet minimum: $40,000.00. If the mortgage is insured, the longest amortization this page will allow is 25 years with the current buyer and property selections.
Insured 30-year eligibility
Use these switches when you want the calculator to model the current insured 30-year path for eligible first-time buyers or buyers of new builds.
Canadian mortgage payment estimate
$3,681.48
Estimated monthly payment on an insured mortgage balance of
$603,135.00 using Canadian semi-annual compounding.
Down payment
10.00%
Loan-to-value
90.00%
Insurance premium
$18,135.00
Estimated payoff
25.0y
Premium tax due at closing
$1,450.80
Minimum cash due now
$66,450.80
Stress-test rate
7.5%
Stress-test monthly payment
$4,412.26
Mortgage summary sheet
Mortgage before insurance
$585,000.00
CMHC-style premium rate
3.10%
Premium base rate + surcharge
3.10% + 0.00%
Mortgage after insurance
$603,135.00
Provincial premium tax
8.000% ($1,450.80)
Down payment + premium tax cash
$66,450.80
Total interest
$501,310.40
Total cost
$1,104,445.40
OSFI stress-test reference
7.5% monthly payment: $4,412.26
Stress-test payment gap
$730.78 above the contract-rate monthly payment
Payment-frequency comparison
Frequency
Payment
Payoff
Total interest
Total cost
Monthly
$3,681.48
25.0y
$501,310.40
$1,104,445.40
Weekly
$848.10
25.0y
$499,390.53
$1,102,525.53
Biweekly
$1,697.08
25.0y
$499,966.02
$1,103,101.02
Accelerated biweekly
$1,840.74
21.3y
$414,369.76
$1,017,504.76
Accelerated weekly
$920.37
21.3y
$413,371.80
$1,016,506.80
Premium tax must be paid in cash In the selected province, the mortgage-insurance premium also attracts provincial sales tax. That tax is shown separately because it cannot be rolled into the insured mortgage balance.Stress-test reference The qualifying payment uses the greater of the contract rate plus 2 percentage points or 5.25%. It is not an approval result, but it helps you see the payment level lenders may test against.Estimate only This worksheet does not quote a lender rate, does not include land transfer tax or legal fees, and does not model term renewals, qualification decisions, or every lender-specific mortgage rule.
Canadian mortgage calculator: payments, CMHC-style insurance, premium tax
A Canadian mortgage calculator is only useful if it follows current Canadian mortgage rules instead of reusing a generic U.S.-style formula.
What makes a Canadian mortgage calculation different
A Canadian mortgage payment is not just a standard fixed-loan payment copied from a generic mortgage calculator. Canadian quoted mortgage rates are commonly converted using semi-annual compounding, which changes the periodic rate used for the payment formula. A calculator that assumes simple monthly compounding can therefore produce the wrong monthly or biweekly payment even if the home price, down payment, and amortization look correct.
The insured-mortgage framework also matters. If your down payment is under 20%, the mortgage may require mortgage loan insurance and the premium is usually added to the financed amount. That means the principal used for the payment is often higher than the purchase price minus the cash down payment alone. A useful Canadian mortgage worksheet therefore needs to separate the mortgage before insurance from the insured balance after the premium is added.
How minimum down payment rules work in Canada
For homes priced at $500,000 or less, the minimum down payment is 5% of the purchase price. For homes priced above $500,000 and up to $1.5 million, the minimum is 5% of the first $500,000 plus 10% of the remaining portion. For homes at $1.5 million or more, the minimum is 20%, which means those purchases fall outside the standard insured path.
That is why a Canadian mortgage payment calculator should ask for home price and down payment separately instead of only asking for the mortgage amount. The size of the cash down payment changes not only the mortgage balance, but also whether the loan is insured, what premium rate applies, and whether the insurance premium tax creates extra cash needed at closing.
Minimum down payment = 5% of first $500,000 + 10% of the portion above $500,000 up to $1,500,000
Applies the current Canadian insured-mortgage down-payment rule for homes below the $1.5 million insured cap.
How CMHC-style insurance premiums and premium tax change the result
When the down payment is under 20%, the mortgage usually follows the insured path. The insurance premium is based on loan-to-value ratio, with lower premiums for lower LTVs and higher premiums as the down payment gets smaller. That premium is usually added to the mortgage balance for payment planning, so the insured mortgage can be materially larger than the pre-insurance loan amount.
Some provinces also apply provincial sales tax to the insurance premium. CMHC notes that Ontario, Quebec, and Saskatchewan currently apply provincial sales tax to the mortgage loan insurance premium, and that tax cannot be added to the loan amount. This is an important planning detail because borrowers may focus on the monthly payment and forget that the tax portion still needs to be paid in cash at closing.
Insured mortgage balance = mortgage before insurance + insurance premium
Adds the mortgage loan insurance premium to the financed balance for payment planning.
Cash due at closing from insurance tax = insurance premium × provincial sales tax rate
Shows the premium tax that must usually be paid separately at closing rather than rolled into the mortgage.
Why insured 30-year amortization can change the monthly payment
A longer amortization lowers the regular payment because the mortgage is spread across more scheduled payments. Under current insured-mortgage rules, a 30-year amortization can be available in situations where the borrower qualifies as a first-time homebuyer or the property is a new build. That matters because a page that assumes every insured mortgage is capped at 25 years can overstate the regular payment for eligible buyers.
The trade-off is not free. CMHC's premium guidance states that an amortization period beyond 25 years is subject to a 0.20% surcharge on the insurance premium. In other words, the monthly payment can go down while the premium cost rises. A strong Canadian mortgage calculator should show both sides of that trade-off instead of advertising the lower payment alone.
Worked example: a 10% down purchase with insurance and premium tax
Suppose you are buying a $725,000 home with a $72,500 down payment, which is 10% down. The mortgage before insurance is $652,500. Because the down payment is under 20%, the loan follows the insured path and the insurance premium is added to the mortgage amount before the payment is calculated.
If the selected province also charges sales tax on the premium, the calculator shows that tax separately because it usually has to be paid in cash at closing. That means the borrower needs to plan for more than the down payment alone. This is one of the most useful planning upgrades on the page: it separates the financed insurance amount from the premium tax cash requirement so the upfront and ongoing costs are not blurred together.
Monthly, weekly, and standard biweekly schedules all follow the same interest-rate assumptions, but the timing of principal reduction changes. Accelerated biweekly payments usually work by taking half of the monthly payment every two weeks, while accelerated weekly payments usually take one quarter of the monthly payment every week. Both accelerated schedules effectively create one extra monthly-payment equivalent over the course of a year. That often shortens payoff time and reduces total interest compared with a plain monthly schedule.
This is why the comparison table matters. A useful Canadian mortgage payment calculator should not only show the selected payment. It should also show the trade-off between monthly, weekly, biweekly, accelerated-weekly, and accelerated-biweekly options so borrowers can decide whether the lower friction of monthly payments is worth the longer payoff path.
Why the stress-test payment belongs beside the contract payment
A contract-rate payment is not the same as a lender qualification payment. OSFI's minimum qualifying rate for uninsured mortgages is currently the greater of the contract rate plus 2 percentage points or 5.25%. Lenders use that higher-rate stress-test concept to check whether borrowers could still carry the mortgage if rates or household expenses changed.
That does not mean this calculator can approve or decline a mortgage. It means the page can show a useful planning reference next to the regular payment. If the stress-test monthly payment is far above the contract-rate payment, the borrower has a clearer signal that income, debt-service ratios, and lender underwriting may matter as much as the headline mortgage payment.
What this Canadian mortgage estimator does not include
This worksheet is still a planning tool, not a lender approval. It does not quote a live mortgage rate, underwrite your income, or replace lender qualification. It also does not include land transfer tax, legal fees, appraisal costs, title insurance, property tax, condo fees, utilities, or home-insurance cash flow in the payment output unless you plan those separately.
It also does not model every lender-specific feature, such as variable-rate trigger-point behaviour, renewal risk, prepayment penalties, refinancing decisions, portability, or alternative-lender amortization options. Use the page to understand payment math, insurance cost, premium tax, payment frequency, stress-test reference payments, and amortization trade-offs. When you are making a real borrowing decision, the lender's disclosure and current official Canadian guidance should control.
Further reading
CMHC — Mortgage calculator — Official CMHC mortgage calculator covering Canadian payment frequencies and insured-mortgage context.
Why does a Canadian mortgage calculator use semi-annual compounding?
Because Canadian mortgage rates are commonly quoted using nominal annual rates compounded semi-annually. To calculate monthly or biweekly payments correctly, that quoted rate needs to be converted into the effective periodic rate for the selected payment frequency.
How do I calculate the minimum down payment in Canada?
For homes up to $500,000, the minimum is 5% of the purchase price. For homes above $500,000 and up to $1.5 million, it is 5% of the first $500,000 plus 10% of the portion above $500,000. At $1.5 million or more, the minimum is generally 20%.
When is mortgage loan insurance required in Canada?
Mortgage loan insurance is generally required when your down payment is under 20% and the mortgage fits the insured-mortgage rules. The premium is usually added to the mortgage balance for payment planning.
Do I have to pay tax on the insurance premium?
In some provinces, yes. CMHC states that Ontario, Quebec, and Saskatchewan currently apply provincial sales tax to the mortgage loan insurance premium, and that tax cannot be added to the loan amount. It normally has to be paid in cash at closing.
Can an insured mortgage in Canada use a 30-year amortization?
It can in some cases. Current insured-mortgage rules allow up to 30 years in situations such as qualifying first-time homebuyers or buyers of new builds, but the insurance premium can increase because CMHC applies a surcharge when the amortization goes beyond 25 years.
Is accelerated biweekly the same as standard biweekly?
No. Standard biweekly spreads the regular loan across 26 payments per year. Accelerated biweekly usually takes half of the monthly payment every two weeks, which means you effectively send one extra monthly-payment equivalent each year and often shorten amortization.
What is accelerated weekly mortgage payment in Canada?
Accelerated weekly usually means paying one quarter of the monthly payment every week. Because there are 52 weekly payments in a year, that works out to about 13 monthly-payment equivalents instead of 12. The extra principal reduction can shorten the payoff path and reduce total interest compared with a standard monthly schedule.
What mortgage stress-test rate does this calculator use?
The stress-test reference uses the greater of the contract rate plus 2 percentage points or 5.25%, matching OSFI's current minimum qualifying rate framing for uninsured mortgages. It is a planning reference only, not an approval result, because lenders still review income, debts, credit, property, product type, and insurer rules.
Does this calculator include closing costs like land transfer tax and legal fees?
No. It focuses on the mortgage payment, mortgage loan insurance, premium tax on that insurance, and the payment-frequency comparison. Land transfer tax, legal fees, appraisals, and other closing costs need to be planned separately.
Does this replace a lender qualification or approval?
No. It is a planning worksheet only. Your lender will still assess income, debt ratios, credit, qualification rules, product type, and current rates before approving a mortgage.
