Key Takeaway

Fixed-rate mortgages in Canada are priced based on Government of Canada bond yields, particularly the 5-year bond, not the Bank of Canada’s overnight policy rate. The BoC rate primarily influences variable-rate mortgages and lenders’ prime rates, while fixed rates move with the bond market, which responds to broader economic expectations about inflation, growth, and future rate directions. This is why fixed mortgage rates can rise or fall independently of BoC rate announcements.

What the Bank of Canada Rate Actually Controls

The Bank of Canada sets the target for the overnight rate, which is the interest rate at which major financial institutions borrow and lend one-day funds among themselves. According to the Bank of Canada, this policy rate directly influences variable-rate mortgages and lenders’ prime rates. When the BoC raises or lowers the overnight rate, variable mortgage rates typically move in the same direction within days.

Fixed-rate mortgages, however, operate under a completely different pricing mechanism.

What Fixed Rates Are Actually Based On

Lenders price fixed-rate mortgages by looking at the cost of borrowing money for the same term length. For a 5-year fixed mortgage (the most common term in Canada), lenders base their rates on the yield of 5-year Government of Canada bonds. Bond yields represent what investors demand to lend money to the federal government over that period.

Lenders add a spread (their margin) on top of the bond yield to cover operating costs, risk, and profit. If the 5-year bond yield is 3.2 per cent and a lender’s margin is 1.5 percentage points, the advertised 5-year fixed rate might be around 4.7 per cent. The bond yield is the foundation; the BoC rate is not.

Why Bond Yields Don’t Follow the BoC Rate

Bond markets are forward-looking. Investors buy and sell bonds based on their expectations for inflation, economic growth, and what the Bank of Canada will do with rates in the future, not just what the BoC does today. If traders expect inflation to ease and the BoC to cut rates over the next two years, bond yields can fall even before the BoC moves. Conversely, if inflation expectations rise, bond yields can climb even if the BoC holds rates steady.

This disconnect means fixed mortgage rates sometimes move weeks or months ahead of BoC announcements, or move in the opposite direction entirely. A BoC rate hike might coincide with falling bond yields (and falling fixed rates) if markets believe the hike will slow inflation and lead to future cuts.

Read also: Why the Bank of Canada’s Interest Rate Cut Is No Silver Bullet for Mortgages in Canada

What This Means for Borrowers in Canada

When choosing between a fixed-rate and variable-rate mortgage, understand that they respond to different signals. A variable rate will move directly with BoC policy changes and is tied to the lender’s prime rate. A fixed rate reflects where the bond market thinks rates are heading over your term.

If you are shopping for a mortgage or coming up for renewal, watch both the BoC announcements and the 5-year Government of Canada bond yield. The Financial Consumer Agency of Canada recommends comparing offers from multiple lenders, as spreads and margins vary. Fixed rates across lenders can differ by 0.5 percentage points or more for the same term, even when bond yields are identical.

Practical Next Step

Before locking in a fixed rate, check the current 5-year bond yield and compare it to the quoted mortgage rate. A wide spread may signal room to negotiate or shop around. For variable rates, review how the lender’s prime rate has tracked the BoC rate historically. Confirm all terms with a licensed mortgage broker for your personal situation.

Financial Disclaimer: This article provides general educational information only and is not personalized financial, lending, legal, or tax advice. Mortgage rates, products, and eligibility vary by lender, province, and your individual circumstances. The OSFI mortgage stress test, qualifying rates, and available programs differ depending on where you live and which lender you use. Rates change frequently; verify current terms with a licensed mortgage professional before making any decisions. For advice tailored to your situation, consult a licensed mortgage broker or your financial institution.