Mortgage payment calculator
Mortgage Calculator
Use this Ontario mortgage calculator to compare up to four down-payment scenarios. It estimates monthly principal and interest, mortgage default-insurance premiums, Ontario tax on the premium and an illustrative payment at the qualifying rate. It does not determine mortgage approval or affordability.
The calculator is designed for buyers planning in Brampton, Mississauga and across the GTA. It uses a common Canadian fixed-rate convention and lets you replace the illustrative rate with your own estimate.
Confirm the interest rate, insurance treatment, qualifying rules and approved payment with your lender or a licensed mortgage professional.
Compare your mortgage payment before you shop.
See how different down payments may change your monthly payment, mortgage insurance and total mortgage amount.
Your Mortgage Details
Enter a few details to compare your options.
Down-Payment Scenarios
Change a percentage or dollar amount.
Calculation notes and 30-year planning view
The calculator starts with a 30-year planning illustration. You can choose 25 years from the amortization dropdown. Actual 30-year eligibility, mortgage-insurance treatment and lender approval must be confirmed with a lender or licensed mortgage professional. A 30-year insured amortization may add 0.20 percentage points to the estimated premium rate.
Your estimated monthly payments
Principal and interest only. Property tax, utilities, home insurance and condo fees are separate.
See exactly what changes when you adjust your down payment.
Select your current scenario and the option you want to explore. The calculator will explain the extra cash needed today and whether your monthly payment, mortgage insurance and total mortgage go up or down.
How to read this: Orange shows extra cash required today, green shows a saving or reduction, and red warns that a cost or payment would increase. The bar gives a quick visual of the trade-off between keeping more cash now and reducing mortgage costs later.
Choose what you want to explore next
Each card below is a button. Tap or click anywhere on a card to open that tool.
Complete scenario breakdown
Illustrative amortization schedule
Graphical representation — Scenario 1
Annual principal and interest are shown as bars. The line shows the mortgage balance remaining.
Interactive graph: move your mouse across a year, or tap a year on a phone or tablet, to see that year’s principal and interest, cumulative principal and interest paid to date, and the remaining balance. The table below shows five-year checkpoints only.
Five-year milestones: “In period” covers the preceding five years; cumulative totals show everything paid from the start of the mortgage through that checkpoint.
| Year | Principal paid in period | Interest paid in period | Total principal repaid | Total interest paid | Remaining balance |
|---|
Plain English
The listing price is not the number that sets your monthly payment.
Two buyers with the same purchase price can end up with meaningfully different payments once down payment tier, insurance and amortization are factored in. Seeing four scenarios at once, plus the full payoff schedule, keeps your search realistic.
Who this helps
Built for buyers who want the real payment before they shop.
This page is for anyone budgeting a GTA purchase who wants their mortgage payment handled before it becomes a surprise at pre-approval.
Buyers setting a budget
Get a realistic monthly payment before you start touring homes.
First-time buyers
See whether CMHC insurance applies and whether a 30-year amortization is available to you.
Buyers comparing down payments
Line up four down payment amounts side by side and see the payment and insurance shift in real time.
Move-up buyers
Model a new purchase price and rate against your current mortgage payment.
Newcomers to Canada
Understand how Canadian mortgage rules differ from what you may know from another country.
Buyers finalizing a pre-approval
Use the estimate as a question-checking tool, then rely on the lender or licensed mortgage professional for approval details.
Important disclaimer
Use this calculator for planning only.
This calculator is for planning only. It estimates principal and interest using the values entered. It does not determine affordability, qualification or approval, and it does not include property tax, heating, condo fees, other debts, lender fees or product-specific underwriting. The stress-test payment is illustrative. Confirm the actual rate, payment and approval conditions with your lender or a licensed mortgage professional.
Often missed
Costs and rules buyers often overlook.
Property tax and heat
Lenders may include property tax, heating costs, condo fees and other obligations when assessing debt-service ratios. These costs are not included in the payment shown.
Ontario tax on the insurance premium
Ontario applies 8% Retail Sales Tax to mortgage default-insurance premiums. It is normally paid from closing funds and is not added to the mortgage.
Standard insured-purchase price limit
For a standard insured home purchase, the purchase price must be below $1.5 million. A purchase at $1.5 million or more normally requires at least 20% down.
Closing costs beyond the down payment
Legal fees, land transfer tax and title insurance are separate from your mortgage. See the Land Transfer Tax Calculator.
Did you know?
Crossing from 5% to 10% down doesn't just shrink your loan — it also drops your CMHC premium rate from 4.00% to 3.10%, so the savings compound.
Did you know?
Your stress-test qualifying rate is not the rate you pay. It's the higher rate your lender uses to confirm you could handle payments if rates rise.
When to use it
Use this calculator before these moments.
Before house hunting
Use the estimate to set a preliminary payment range before touring homes. It is not a substitute for pre-approval.
Before finalizing your budget
Add your mortgage payment to land transfer tax and other closing costs.
When comparing down payment amounts
Line up four scenarios side by side instead of re-testing one number at a time.
When reviewing a pre-approval
Compare the principal-and-interest estimate with the lender’s numbers and ask about any differences in rate, compounding, fees or insurance.
When rates move
Re-run the numbers whenever your target rate changes to keep your budget current.
Did you know?
A longer amortization can lower the regular payment but generally increases interest over time. The schedule is illustrative because the rate may change at renewal.
Mortgage payment FAQ
Common questions before you rely on the estimate.
How is my monthly mortgage payment calculated?
This calculator converts the entered nominal annual rate to a monthly equivalent using semi-annual compounding, then applies a standard principal-and-interest payment formula. It is a planning estimate using the rate you enter, whether that rate is fixed or variable. Lender rounding, payment dates and product terms can create small differences.
Does it matter if my mortgage is fixed or variable?
The payment calculation itself is the same either way; it simply uses the rate you enter. What differs is how long that number stays accurate. A fixed-rate mortgage keeps the same rate and payment for your full term. A variable-rate mortgage moves with your lender's prime rate: some variable mortgages adjust the payment amount as rates change, while others keep the payment fixed but shift how much goes toward principal versus interest, which can lead to a "trigger point" if rates rise enough. Confirm which type applies to your situation with your lender or mortgage professional.
What is the mortgage stress test?
For most new insured and uninsured mortgages at federally regulated lenders, the qualifying rate is generally the higher of the contract rate plus 2 percentage points or 5.25%. The displayed payment at that rate is illustrative only; it does not test your income, expenses, debts or approval.
When do I need CMHC mortgage insurance?
For a standard home purchase, mortgage default insurance is typically required when the down payment is below 20% and the purchase price is below $1.5 million. The lender arranges the insurer, which may be CMHC, Sagen or Canada Guaranty.
How much is CMHC insurance?
For the standard insured scenarios shown here, the planning rates are 4.00% at 5% to 9.99% down, 3.10% at 10% to 14.99% down, and 2.80% at 15% to 19.99% down. An insured amortization beyond 25 years adds 0.20 percentage points. Product details can differ.
Can I get a 30-year amortization?
With less than 20% down, the maximum amortization is 30 years when at least one borrower is a qualifying first-time buyer or the property is a qualifying new build; otherwise it is 25 years. A first-time buyer may purchase a resale home, and a previous homeowner may qualify by purchasing a qualifying new build. With 20% or more down, the lender sets the available maximum amortization.
What is the minimum down payment in Canada?
For a standard one- or two-unit purchase, the minimum is 5% of the first $500,000 plus 10% of the portion above $500,000 and below $1.5 million. A purchase at $1.5 million or more normally requires at least 20% down. Lenders may require more.
Does this calculator include property tax and utilities?
No. The monthly result covers estimated mortgage principal and interest only. It does not include property tax, heating, condo fees, insurance, other debts or lender-specific amounts used in qualification.
Is this calculator exact, or is it mortgage advice?
No. It is a planning estimate, not a mortgage approval, affordability decision or financial recommendation. Rates, premiums and qualifying rules can change, and your lender or licensed mortgage professional confirms the actual mortgage terms.
Why is my estimated payment different from an online US mortgage calculator?
This calculator uses a common Canadian semi-annual compounding convention for this payment estimate. Many calculators use different compounding, rounding or payment assumptions, so results may not match exactly.
Does a bigger down payment always save money?
A larger down payment usually reduces the amount financed and may reduce or remove the insurance premium. The better choice still depends on closing funds, emergency savings, the mortgage product and other financial priorities.
Should I compare more than one down payment scenario?
Yes. Comparing scenarios helps show how the down payment changes the insurance premium, mortgage amount and monthly principal-and-interest payment. It does not identify which option is suitable for you.
What does the amortization schedule show?
It illustrates annual principal, interest and remaining balance as though the entered rate and payment continued for the full amortization. In practice, most mortgages renew by term, so future rates and payments can change.
Buyer resources
Helpful pages for the buying decision.
Use these pages to move from a rough mortgage payment to a full budget, area comparison and buyer strategy call.
First-Time Home Buyer GTA
A full walkthrough of budgeting, financing and buying your first home.
Read the guide -> Buyer agentGTA Buyer Agent
Buyer representation across Brampton, Mississauga, Toronto and the GTA.
See buyer services -> QuestionsBuyer FAQ
Common buyer questions about financing, offers and closing.
Read FAQ -> Buyer guideBuyer's Guide
Download the full closing costs checklist and step-by-step buying process.
Get the guide -> Closing costsLand Transfer Tax Calculator
Estimate land transfer tax alongside your mortgage payment.
See calculator -> StrategyBook a Buyer Call
Talk through your budget, timeline and target areas with Gaurang.
Book a call ->Review your estimate
Ask Team Shah to help plan the purchase
Prefer to call? Use the button above to reach Gaurang directly. Prefer to write instead? Share your details here and Gaurang can help connect your payment estimate to your home-search plan; mortgage approval must be confirmed by a lender or licensed mortgage professional.
Note: This page provides general real estate information only and is not mortgage, legal, tax or financial advice. Gaurang Shah is a Real Estate Broker with Team Shah Real Estate at Royal LePage Flower City Realty. Call or text (647) 892-2411 or email mail@myshahteam.com.