• How Mortgage Rates Are Set in Canada

The Bank of Canada sets the overnight rate — the rate at which major financial institutions lend money to each other for one-day terms. This rate directly influences the prime rate, which Canadian banks publish and which forms the basis for variable mortgage rates. When the Bank of Canada raises the overnight rate, prime goes up, and variable mortgage rates follow, typically within days. Fixed mortgage rates move independently: they are driven by yields on Government of Canada bonds, particularly the 5-year bond, which is influenced by inflation expectations, economic growth, and global capital flows.

• Posted Rate vs. Discounted Rate

One of the most important things to understand about Canadian mortgage rates is that the rate advertised by a major bank — the posted rate — is almost never what qualified borrowers actually pay. The posted rate is published by lenders and also used by the federal government to stress-test mortgage applicants (you must qualify at the higher of 5.25% or the posted rate plus 2%). The actual rate offered to borrowers is a discounted rate, negotiated below the posted rate, and the discount available depends on the borrower's credit profile, the lender, market competition, and whether you negotiate or use a mortgage broker.

Major banks rarely volunteer their best rate unprompted. Borrowers who simply accept the first number they are given consistently pay more than those who negotiate, compare, or engage a broker. This is one of the clearest cases in personal finance where a small investment of time produces a large financial return.

• What Moves Rates Over Time

Variable rates move with Bank of Canada decisions, which are driven primarily by inflation data and labour market conditions. When inflation is high, the Bank raises rates to slow borrowing and spending; when the economy weakens, it cuts rates to stimulate activity. Fixed rates move with bond yields, which anticipate these central bank decisions — meaning fixed rates often move in advance of Bank of Canada announcements rather than in response to them. This is why fixed rates sometimes fall while the Bank of Canada is still actively raising its overnight rate, or rise in anticipation of a future rate hike cycle. Tracking the 5-year Government of Canada bond yield gives a useful leading indicator of where 5-year fixed rates are headed.

• How to Read a Mortgage Rate Offer

When a lender presents you with a rate, there are three things to confirm beyond the headline number. First, the compounding frequency: by Canadian law, mortgage interest must compound semi-annually (twice per year), not monthly as in many other countries. This means the effective rate you actually pay is slightly different from the stated rate, and it is how lenders are required to calculate interest on Canadian mortgages. Second, whether the rate is the rate or the APR — the Annual Percentage Rate includes fees and other costs of borrowing, making it a more comprehensive comparison tool. Third, what the prepayment privileges are: a mortgage with a 0.1% higher rate but generous prepayment privileges may be more valuable to a borrower who plans to pay aggressively than a rate-minimized mortgage with restrictive terms.

• The Real Cost of Rate Differences

These figures assume a $500,000 mortgage amortized over 25 years with no prepayments. The difference between 5% and 6% over the full amortization is approximately $80,000 in additional interest — a figure large enough to justify significant time spent shopping for the best available rate. Even a 0.25% difference represents approximately $20,000 in total interest on a mortgage of this size.

• Rate Holds: Locking In Before You Close

Most lenders will hold a pre-approved rate for 90 to 120 days from the date of pre-approval. A rate hold means that if rates rise before you close on your purchase, your lender is committed to the lower rate. If rates fall, most lenders will offer the lower rate at closing — but confirm this in writing before committing to a lender. Rate holds are particularly valuable in rising-rate environments, when the difference between the rate at pre-approval and the rate at closing can be material. Shopping for both rate and rate-hold length simultaneously is a useful strategy when rate volatility is elevated.

• Mortgage Broker vs. Bank: Rate Access

A mortgage broker has access to rates from dozens of lenders simultaneously, including monoline lenders — institutions that only offer mortgages and often provide better rates than full-service banks because they have lower overhead. Brokers are compensated by the lender (via a finder's fee called a trailer fee), not by you, so their service is typically free to borrowers on standard mortgage products. A broker shopping your application across multiple lenders can often produce a meaningfully better rate than negotiating with a single bank directly, particularly if your situation involves any complexity: self-employment, a non-standard property type, or a recent change in income.

Going directly to your bank has its own advantages: an existing relationship may qualify you for loyalty discounts or bundled product benefits, and a bank that holds all your financial products can sometimes move faster on approval. The best approach for most borrowers is to get a broker's best rate first, then present it to your primary bank and ask them to match or beat it.

• When to Break a Mortgage for a Lower Rate

If rates drop significantly during your mortgage term, breaking your mortgage early to refinance at a lower rate can save money — but it requires careful math. Fixed-rate mortgages carry a prepayment penalty calculated as the greater of three months' interest or the Interest Rate Differential (IRD) — a formula that compensates the lender for the rate difference between your current rate and the current market rate for the remaining term. IRD penalties on fixed mortgages can be very large when rates have fallen significantly, sometimes equivalent to several years of interest savings. Variable-rate mortgages carry only a three-month interest penalty, making them much cheaper to break. Before breaking a mortgage, calculate the penalty, compare it to the projected savings, and factor in any legal and administrative costs of refinancing.

• Pressure-Testing Your Rate Decision

Before accepting a rate and committing to a mortgage product, ask yourself three questions. If rates rise by 2% from today, can you still afford the payment on a variable-rate mortgage? If rates fall by 1% during your fixed-rate term, is the IRD penalty low enough that breaking the mortgage would still make financial sense? And are the prepayment privileges on this mortgage flexible enough to allow you to pay it down faster if your financial situation improves? These questions do not have universal answers, but asking them before signing prevents the common scenario of discovering the constraints of a mortgage product only when you want to change your behaviour.

• The Bottom Line

The rate on your mortgage is not fixed by the market — it is negotiated, and most borrowers have more leverage than they realize. Get at least two or three quotes, including one from a broker, before committing to any lender. Understand what is driving the rate you are being offered, read the full terms of the mortgage product rather than just the rate, and run the numbers on what a 0.25% improvement would mean over your amortization. That exercise alone tends to reframe how much time is worth spending on rate shopping.