Understanding amortization, CMHC insurance, and stress tests — everything Canadians need to know before buying a home.
Your monthly mortgage payment in Canada has two parts: principal (paying back the loan) and interest (the cost of borrowing). In the early years of your mortgage, most of your payment goes to interest. Over time, more goes to principal as the balance shrinks.
For example, on a $500,000 mortgage at 5.5% over 25 years, your first payment of approximately $3,070 breaks down as roughly $2,292 in interest and only $778 going toward the principal. By year 20, that same payment is mostly principal.
Canada is unique — the Interest Act of Canada requires that mortgage interest be compounded semi-annually, not monthly like in the United States. This means your effective interest rate is slightly lower than the advertised rate, which saves you money.
If your down payment is less than 20% of the purchase price, you are required to purchase CMHC mortgage default insurance. The premium is added to your mortgage balance — you do not pay it upfront.
On a $600,000 home with 5% down ($30,000), your CMHC premium would be $22,800 — making your total mortgage $592,800.
Since 2018, all Canadian mortgage applicants must pass the federal stress test. You must qualify at the higher of your contract rate plus 2%, or 5.25%. This ensures you could still afford your mortgage if interest rates rise at renewal.
The amortization period is the total time to pay off your mortgage. In Canada, the maximum is 25 years for insured mortgages (under 20% down) and 30 years for uninsured mortgages. A longer amortization means lower monthly payments but significantly more interest paid overall.
On a $500,000 mortgage at 5.5%: a 25-year amortization costs $149,000 more in interest than a 20-year amortization — but saves $400/month in payments. Use our mortgage calculator to find the right balance for your budget.
After helping thousands of Canadians understand their mortgage payments, here are the most valuable tips that most people miss:
These are the most expensive mistakes Canadians make when getting a mortgage — and how to avoid them:
Ontario remains one of Canada's most expensive housing markets. The average home price in the Greater Toronto Area sits above $1 million, while markets like Hamilton, Kitchener-Waterloo, and Ottawa offer more affordable entry points for first-time buyers.
The Bank of Canada's interest rate decisions directly impact variable rate mortgages and the rates offered at renewal. After aggressive rate hikes in 2022-2023 to combat inflation, rates have begun to moderate — making 2026 an interesting time for buyers who were previously priced out of the market.
Ontario's First-Time Home Buyer Incentive and the new Tax-Free First Home Savings Account (FHSA) — which allows Canadians to save up to $40,000 tax-free toward a first home — are tools that can significantly reduce the amount you need to borrow.
One of the most consequential decisions Canadian homebuyers face is choosing between a fixed-rate and a variable-rate mortgage. Each carries distinct trade-offs, and the right choice depends on your risk tolerance, financial flexibility, and view of where interest rates are heading.
A fixed-rate mortgage locks your interest rate for the entire term, typically five years in Canada. Your payment never changes, providing complete predictability for budgeting. The downside is that fixed rates are usually slightly higher than variable rates at the outset, and if rates fall during your term, you are locked in unless you break the mortgage and pay a penalty — which for fixed mortgages uses the often-expensive interest rate differential (IRD) calculation.
A variable-rate mortgage moves with the lender's prime rate, which tracks the Bank of Canada's policy rate. When rates fall, more of your payment goes to principal (or your payment drops, depending on the mortgage type); when rates rise, the reverse happens. Historically, variable rates have saved borrowers money more often than not, but the rapid rate increases of 2022 to 2023 reminded Canadians that variable mortgages carry real risk. A key advantage: breaking a variable mortgage typically costs only three months' interest, far less than a fixed mortgage's IRD penalty.
Two mortgage concepts that confuse many Canadian buyers are amortization and term, and understanding the difference has major financial consequences. The amortization period is the total time to pay off the entire mortgage — commonly 25 years in Canada, though up to 30 years is available for insured first-time buyers on new builds. The term is the length of your current contract with the lender, typically one to five years, after which you renew at then-current rates.
A longer amortization lowers your monthly payment but dramatically increases total interest paid. On a $500,000 mortgage at 5%, extending amortization from 25 to 30 years reduces the monthly payment by roughly $200 but adds tens of thousands of dollars in interest over the life of the loan. The lower payment improves affordability and cash flow today, but it is genuinely expensive over time. The reverse is also true: a shorter amortization or accelerated payments save enormous interest.
The single most powerful interest-saving tool most Canadians overlook is the prepayment privilege. Most mortgages allow you to increase your regular payment by a set percentage and make lump-sum prepayments (often up to 15% to 20% of the original balance) each year without penalty. Even modest prepayments early in the amortization, when nearly all of your payment goes to interest, can shave years off your mortgage and save tens of thousands of dollars. Switching to accelerated bi-weekly payments — making 26 half-payments rather than 12 monthly payments — squeezes in one extra monthly payment per year almost painlessly.
At renewal, do not simply sign the lender's offer. Renewal is the ideal time to shop competing lenders, negotiate, and reassess your fixed-versus-variable choice and amortization. A mortgage broker can survey the market at no direct cost to you, and even a small rate improvement at renewal compounds into significant savings over the next term.
The mortgage payment is only one part of the cost of homeownership, and Ontario buyers in particular face significant additional expenses that should be budgeted from the start. Underestimating these costs is one of the most common reasons new homeowners feel financially stretched.
Upfront closing costs typically run 1.5% to 4% of the purchase price. The largest in Ontario is land transfer tax — and buyers in the City of Toronto pay it twice, once to the province and once to the municipality. First-time buyers receive rebates (up to $4,000 provincially and an additional $4,475 in Toronto), but the tax on a typical Ontario home still runs into thousands of dollars. Other closing costs include legal fees, title insurance, a home inspection, and an appraisal.
If your down payment is less than 20%, you must pay for mortgage default insurance through CMHC or a private insurer, with premiums ranging from 2.8% to 4% of the mortgage amount, usually added to the mortgage balance. While this lets you buy with as little as 5% down, it adds meaningfully to your total borrowing cost.
Ongoing costs beyond the mortgage include property taxes (which vary widely by municipality), home insurance, utilities, and maintenance. A common rule of thumb sets aside 1% to 3% of the home's value annually for maintenance and repairs. For condos, monthly maintenance fees cover building upkeep but can rise over time and must be factored into affordability. Budgeting realistically for all these costs — not just the mortgage payment — is the difference between comfortable ownership and being house-poor.
Q: How much do I need to earn to afford a $600,000 home in Ontario?
A: With a 20% down payment ($120,000), you would need a household income of approximately $130,000 to $150,000 to qualify for a $480,000 mortgage at current stress test rates. With only 5% down, the required income is even higher due to CMHC insurance and stricter qualification rules.
Q: Is a fixed or variable rate mortgage better in Canada right now?
A: Fixed rates provide payment certainty — your payment never changes during the term regardless of Bank of Canada rate decisions. Variable rates historically save money over the long term but carry risk. In an uncertain rate environment, most Canadian financial advisors recommend fixed rates for first-time buyers who need budget predictability.
Q: Can I pay off my Canadian mortgage early without penalty?
A: It depends on your mortgage type. Open mortgages allow early repayment with no penalty but have higher rates. Closed mortgages — the most common type — charge a penalty for breaking the mortgage early, typically the greater of 3 months interest or the Interest Rate Differential (IRD). Always check your prepayment privileges before making extra payments.
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