Use our advanced Ontario mortgage calculators to plan your home purchase with real numbers — not estimates. Each calculator is built specifically for Canadian mortgage rules, including the stress test, CMHC insurance, and Ontario land transfer tax. Whether you’re buying in Toronto, Vaughan, Mississauga, or anywhere in the GTA, these tools help you understand exactly what you can afford, what your payments will be, and how much income you need to qualify.
- Used by Ontario home buyers daily
- Built for Toronto & GTA market
- Works with real lender rules
Ontario Mortgage Calculator Hub
All Ontario Mortgage Calculators — Payments, Affordability & Closing Costs
Monthly Payment Calculator
Ontario Mortgage Payment Calculator
Calculate your monthly mortgage payment using real Ontario rules, including interest, principal, property tax, and CMHC insurance. Built for buyers across Toronto and the GTA.
Closing Cost Essentials
Ontario & Toronto Land Transfer Tax Calculator
Estimate your Ontario land transfer tax and Toronto double LTT instantly, including first-time buyer rebates. A critical cost for GTA home buyers.
Total Cost Breakdown
Ontario Closing Cost Calculator
Calculate your full closing costs, including legal fees, title insurance, land transfer tax, and adjustments. Know your true cash required before buying in Ontario.
Affordability Calculator
Maximum Mortgage Calculator Ontario
Find out how much mortgage you can afford based on income, debts, and the B-20 stress test. See what lenders will actually approve in Ontario.
Qualification Tool
Required Income for Mortgage Ontario
Estimate the income needed to qualify for a home in Ontario. Includes stress test rules and standard lender qualification ratios.
Lender Qualification Metrics
Debt Service Ratio Calculator Canada
Calculate your Gross Debt Service (GDS) and Total Debt Service (TDS) ratios — the key numbers lenders use to approve mortgages in Canada.
Compare Mortgage Rates
Mortgage Rate Comparison Calculator Ontario
Compare two mortgage rates side-by-side and see the real cost difference over time. Understand how even small rate changes impact your total payments.
Mortgage Renewal Strategy
Mortgage Renewal Savings Calculator Ontario
Compare staying with your lender versus switching at renewal. See how much you could save over your next term with better rates.
Ontario Mortgage Tools & Services
Everything You Need to Plan, Compare & Get Approved
Instead of guessing your mortgage, use real Ontario calculations, compare lender options, and get expert guidance — all in one place. Whether you’re buying in Toronto, Vaughan, or anywhere in the GTA, this is your complete mortgage toolkit.
Mortgage Calculators (Ontario-Accurate)
Run the numbers using Ontario-specific rules — stress test, CMHC insurance, and Toronto land transfer tax included.
- Used by Ontario home buyers daily
- Built for Toronto & GTA market
- Works with real lender rules
Download The My Mortgage Toolbox App
Download the Mortgage Toolbox App — access all nine Ontario mortgage calculators, real-time rate alerts, and direct one-tap contact with your mortgage advisor.
Take all Ontario mortgage calculators with you. Compare scenarios, track rates, and share results instantly — anytime, anywhere.
What You Can Calculate
- Monthly mortgage payments (principal & interest) using Canadian semi-annual compounding
- Maximum mortgage affordability based on income, existing debts, and the B-20 stress test
- Total cash required at closing including down payment, land transfer tax, and legal fees
- Ontario and Toronto land transfer taxes with first-time buyer rebates applied automatically
- Required annual income to qualify for any Ontario purchase price under current lending rules
- GDS and TDS debt service ratios — the two numbers lenders check before everything else
- Mortgage renewal savings — your bank’s posted rate versus what a broker can actually get you
- Rate comparison — two scenarios side-by-side with total interest cost over a full term
- Purchase all-in cost — the complete cash picture including CMHC insurance PST
Working with a mortgage calculator in Ontario is different from using a generic tool built for the US market. Canadian mortgages compound semi-annually by law — not monthly — which changes your payment calculation. Ontario buyers also pay land transfer tax at closing, and Toronto buyers pay a second municipal LTT on top of that. Every calculator on this page handles both correctly.
Whether you’re a first-time buyer in Vaughan trying to understand how much you can afford, a homeowner in Mississauga approaching renewal, or an investor in Brampton running rental property numbers — these calculators reflect the actual rules your lender will apply to your file.
Run any calculation in seconds. No account required. Share your results by URL with your partner, your lawyer, or your realtor.
Start With Numbers. Finish With a Better Rate.
Run your calculations here, then get a personalized mortgage rate based on your real financial profile. If the numbers work, I’ll find the right lender. If they don’t yet, I’ll tell you exactly what to adjust.
FAQ
Questions About These Calculators
Yes — each calculator uses the standard Canadian mortgage formula with semi-annual compounding, the current CMHC premium tiers, the 2026 Ontario and Toronto LTT rate structures, and the B-20 stress test qualifying rate (contract rate + 2% or 5.25%, whichever is higher). Results match what your lender will show in a commitment letter.
Yes. The Maximum Mortgage Calculator and Required Income Calculator both apply the B-20 stress test by default — showing your qualification at both your actual contract rate and the stress-tested rate. This gives you the most accurate picture of what you can borrow under current OSFI regulations.
Yes — the Land Transfer Tax Calculator includes both the Ontario provincial LTT and the Toronto Municipal Land Transfer Tax. Select City of Toronto to see both taxes calculated and combined. First-time buyer rebates up to $8,475 are applied automatically.
No — all nine calculators are completely free with no account, no email, and no registration required. You can share any calculation by URL. An account is only needed if you want to save scenarios to the Mortgage Toolbox app.
Yes — all calculators work on mobile browsers. For a dedicated offline experience with rate alerts and saved scenarios, download the free My Mortgage Toolbox app on iOS or Android.
Still Have Questions?
Not seeing your exact situation here? Let’s take a look at your numbers and walk through your options step by step.