How Interest Rates Work in Canada (Plain-English Guide)

When the news says “the Bank of Canada cut rates again,” what does that actually mean for your savings account, your mortgage renewal, your line of credit, your parents’ GIC? This is the guide I wish someone had handed my dad when he tried to figure out why his variable-rate mortgage suddenly went up by hundreds of dollars a month.

Where Canadian interest rates actually come from

There is one number in Canada that every other interest rate — your mortgage, your HELOC, your credit card, your savings account — gets built on top of. That number is the Bank of Canada’s target for the overnight rate. It is set eight times a year by the Bank’s Governing Council. The number you see in the box above is the current one.

The overnight rate is the rate at which Canada’s big banks lend money to each other for one night. When the Bank of Canada changes its target, every bank in the country adjusts the rate they charge each other — and within hours, they adjust the rate they charge you.

The next number you’ll see is called the prime rate. It’s what the big banks charge their best, lowest-risk corporate borrowers. In Canada, prime sits at the BoC’s target overnight rate plus about 2.20 percentage points. So if the BoC target is 2.25%, prime is roughly 4.45%. The big banks set prime on the same morning the BoC announces, and they almost always move in lockstep.

Fixed vs variable: the question every borrower has to answer

Once you understand prime, the fixed-vs-variable debate becomes much simpler.

Variable-rate loans are usually priced as “prime minus 0.5” or “prime plus 1,” depending on the product and your credit. When the BoC moves, your rate moves on the very next billing cycle. You feel every cut and every hike.

Fixed-rate loans work differently. Their rate isn’t tied to today’s prime — it’s tied to what’s happening in the bond market, specifically Government of Canada bond yields. Banks lend you a 5-year fixed mortgage at roughly the 5-year Government of Canada bond yield plus a spread of 1.5 to 2 percentage points. So when bond markets price in future rate cuts, fixed mortgage rates can fall even when the BoC hasn’t moved yet. And they can rise the same way.

That’s why you’ll sometimes see fixed mortgage rates move a week before a BoC announcement — the bond market has already priced it in. The variable side waits for the actual decision.

Why the Bank of Canada moves rates at all

The Bank of Canada has one job — keep inflation near 2% per year. That’s the entire mandate. When inflation runs hot, the Bank raises rates to slow borrowing and spending. When inflation cools or the economy weakens, the Bank cuts rates to encourage activity. Every decision is filtered through that single question: are we tracking back to 2%?

The Bank publishes its Monetary Policy Report four times a year, where it lays out exactly what it’s seeing in the data — wage growth, oil prices, the Canadian dollar, U.S. Fed expectations, housing — and what that implies for rates. If you actually want to predict what the Bank will do next, the MPR is the only honest source.

When the Bank of Canada announces rate decisions

The Bank announces eight times a year, on pre-published Wednesdays at 9:45 a.m. Eastern. Each decision is followed by a written policy statement; four of the eight are also paired with a Monetary Policy Report and a press conference at 10:30 a.m. Eastern. You can subscribe to email alerts directly from the Bank of Canada’s events page — there’s no middleman, no analyst commentary, just the actual decision the moment it lands.

How a rate change actually touches your money

A 0.25-percentage-point cut sounds small. Here’s roughly what it changes in your life within 30 days:

• Variable mortgage on $500,000: payment drops about $70/month, or your payment stays the same and more goes to principal — depends on your lender.
• HELOC at prime + 0.5: the interest you pay on the balance drops by the same 0.25 points starting the next billing cycle.
• 5-year fixed mortgage shopping today: usually no immediate change — bond markets have already priced cuts in or out by the time the BoC announces.
• High-interest savings account: banks cut your savings rate by roughly the same amount, usually within a week. Promotional rates from the smaller banks (EQ, Wealthsimple, Neo, Tangerine, Simplii) tend to move slower and stay higher.
• GIC rates: drop on new GICs issued after the cut. Your existing GIC is locked in at the rate you signed for — that’s the whole point of a GIC.
• Credit card APR: almost no change. Credit cards are usually fixed-rate around 19.99% to 22.99% and don’t move with prime. The exception is low-rate cards tied to prime.

What this means you should actually do

I won’t pretend there’s one right answer — that depends on your job security, your timeline, and how well you sleep. But here’s the framework I’d give my own family:

• If you’re shopping for a mortgage right now: get both fixed and variable quotes. Ask the lender to model your payment under a 1-point hike and a 1-point cut. Pick what you can actually live with, not what feels clever.
• If you have a variable mortgage and rates are dropping: ask your lender to keep your payment the same and put the savings against principal. This is the single best move you can make in a rate-cut cycle.
• If you’re parking cash for the short term: use a high-interest savings account from one of the smaller banks (EQ, Wealthsimple, Neo). The promo rates beat the big-bank rates by 2 to 3 percentage points and CDIC coverage is the same.
• If you have a HELOC: rate cuts directly cut what you owe. Rate hikes do the opposite. Don’t draw on it unless you have a real plan to pay it back.
• If you’re nearing GIC renewal: in a falling-rate environment, lock in longer. In a rising-rate environment, ladder or stay short.

Related guides on Landed Money

The full picture of how rates touch your daily money lives across several articles:

• How Credit Card Interest Really Works in Canada (And How to Never Pay It)
• Chequing vs Savings Accounts in Canada: Which One Do You Actually Need?
• What Is an Index Fund? Investing Without Feeling Like Gambling
• What Is CDIC, and How Your Money Is Protected If a Bank Fails
• RRSP Explained Simply: How the Tax Refund Actually Works
• TFSA Explained Simply: The Account the Government Cannot Tax