How Rising Interest Rates Affect Your Mortgage Payments

When the Bank of Canada raises its policy rate, the effects don't stop at the news headlines. Depending on the type of mortgage you hold, a rate increase can change your monthly payment, extend your amortization, or simply sit in the background until your renewal date arrives.

Variable-Rate Mortgages React the Fastest

Homeowners with a variable-rate mortgage typically feel rate changes sooner than anyone else. Most Canadian lenders offer two versions of this product: one where your payment stays the same but the portion going toward principal versus interest shifts, and one where your actual payment amount changes with the rate.

For example, if a homeowner has a variable rate mortgage with a fixed payment of $1,800 a month, a rate increase might mean more of that payment goes toward interest and less toward principal, which could slow down how quickly the balance shrinks. In some cases, if rates rise enough, a homeowner could hit what is sometimes called a trigger rate, where the payment no longer covers the interest owed. When this happens, lenders may require a lump sum payment, a temporary increase to the monthly payment, or an adjustment to the amortization schedule.

Homeowners with adjustable payments, where the dollar amount moves with the rate, will notice the change reflected directly in their next payment. This can make budgeting more unpredictable during periods of rate movement, which is why some homeowners choose to build in extra room in their monthly budget as a cushion.

Fixed-Rate Mortgages Are Protected Until Renewal

A fixed-rate mortgage locks in your interest rate for the length of your term, commonly three to five years in Canada. This means rising rates during your term will not affect your payment at all. The impact comes later, at renewal.

To illustrate, imagine a homeowner secured a five-year fixed rate a few years ago at a lower rate than what is available today. When their term ends and they need to renew, they may be offered a new rate that is noticeably higher, which could increase their monthly payment even though their mortgage balance has gone down. This is sometimes referred to as payment shock, and it can catch homeowners off guard if they have not planned for it.

Because fixed-rate holders have advance notice of their renewal date, there is an opportunity to prepare. Reviewing your budget, paying down extra principal where possible before renewal, or speaking with a mortgage professional a few months ahead of time can help you understand what your options might look like.

How Rate Increases Affect Amortization

For many homeowners, especially those with variable-rate mortgages and fixed payments, rising rates do not necessarily mean an immediate payment increase. Instead, the amortization period, meaning the total time it takes to pay off the mortgage, can stretch out. This happens because a larger share of each payment is absorbed by interest rather than principal.

Some lenders allow negative amortization, where the payment does not even cover the full interest owed, causing the balance to grow slightly rather than shrink. Lenders that allow this situation typically have policies in place, such as requiring a switch to a fixed rate or a lump sum payment once the mortgage balance reaches a certain threshold relative to the home's value.

Understanding whether your specific mortgage product allows for extended amortization or requires immediate payment adjustments is an important part of knowing how exposed you are to rate changes. This information is usually outlined in your mortgage contract, but a mortgage broker can help clarify the details if anything is unclear.

Options Homeowners May Consider During Rate Increases

Homeowners facing higher payments or upcoming renewals during a period of rising rates have several avenues worth exploring, though what makes sense will depend on individual circumstances. Some homeowners choose to make lump sum prepayments if their mortgage allows it, which can reduce the principal balance and offset some of the impact of a higher rate.

Others look at extending their amortization period at renewal to lower their monthly payment, understanding that this may mean paying more interest over the life of the mortgage. Switching from a variable to a fixed rate, or vice versa, is another option some homeowners consider, depending on their risk tolerance and financial goals.

Because every mortgage and household situation is different, speaking with a licensed mortgage professional can help homeowners understand which options are realistic for their circumstances and how different choices might play out over time.

Key Takeaways

• Variable-rate mortgages typically respond to rate changes faster than fixed-rate mortgages
• Fixed-rate mortgage payments stay the same during the term, but renewal at a higher rate could increase future payments
• Rising rates can extend amortization periods rather than immediately increasing payments, depending on the mortgage type
• Some mortgages have a trigger rate that can require lump sum payments or payment adjustments if rates rise enough
• Reviewing your mortgage terms and speaking with a mortgage professional can help you understand your options during rate increases

Disclaimer: This article is for informational purposes only and does not constitute financial, legal, or mortgage advice. Any numbers, rates, or scenarios mentioned are examples only and may not reflect current market conditions. Always consult a licensed mortgage professional or financial advisor for guidance specific to your situation.