How the Bank of Canada Affects Your Mortgage
Every BoC rate decision makes headlines — but its impact on your mortgage depends on whether you have a fixed or variable rate, and how bond markets react.
Two Different Channels, Two Different Rates
Variable Rates
Driven by: Bank of Canada overnight rate → Prime rate
How it works: When the BoC raises or cuts the overnight rate, banks adjust their prime rate by the same amount (usually within 1-2 days).
Your rate: Expressed as Prime ± discount. Example: Prime - 0.50% = 5.95% - 0.50% = 5.45%
Impact: Direct and immediate. A 0.25% BoC cut reduces your variable rate by 0.25%.
Fixed Rates
Driven by: Government of Canada 5-year bond yield
How it works: Lenders fund fixed mortgages by selling bonds. When bond yields drop, lenders can offer lower fixed rates (and vice versa).
Your rate: Bond yield + lender spread (typically 1.5%-2.0%)
Impact: Indirect and forward-looking. Bond yields react to inflation expectations, not just BoC decisions.
The Rate Transmission Chain
BoC Overnight Rate
Policy tool
Bank Prime Rate
Overnight + ~2.2%
Your Variable Rate
Prime ± discount
Variable rate path: direct and immediate
Inflation Expectations
Market sentiment
5-Year Bond Yield
Market-determined
Your Fixed Rate
Bond yield + spread
Fixed rate path: indirect and forward-looking
Recent BoC Rate Decisions
| Date | Change | Overnight Rate |
|---|---|---|
| January 29, 2025 | -25 bps | 3.00% |
| December 11, 2024 | -50 bps | 3.25% |
| October 23, 2024 | -50 bps | 3.75% |
| September 4, 2024 | -25 bps | 4.25% |
| July 24, 2024 | -25 bps | 4.50% |
| June 5, 2024 | -25 bps | 4.75% |
| April 10, 2024 | 0 bps | 5.00% |
| March 6, 2024 | 0 bps | 5.00% |
The BoC makes 8 scheduled rate announcements per year. The next announcement schedule is available on the Bank of Canada website.
What Rate Changes Mean for Your Cost of Credit
Rate changes aren't abstract — they directly impact what you pay over the life of your mortgage. Here's how a single 0.25% change affects your total cost of credit.
Impact of 0.25% on a $400,000 Mortgage (25 Years)
Monthly Payment Change
±$56
Annual Impact
±$672
Total Cost of Credit Impact
±$14,000
Variable Rate Holders
Every BoC announcement directly changes your cost of credit. In a cutting cycle, your payments drop immediately — savings that compound over your remaining term. In a hiking cycle, your cost of credit increases with each decision.
Fixed Rate Holders
Your cost of credit is locked until renewal. But bond yields today signal what your renewal rate will be. If yields are falling, your next term could reduce your cost of credit significantly.
Approaching renewal? If your mortgage renews in 6-12 months, start watching BoC announcements and 5-year bond yields now. The rate environment at renewal will determine your cost of credit for the next 3-5 years.
Frequently Asked Questions
Camilo Rodriguez
Founder of Mortgages Lab & Mortgage Expert
Camilo Rodriguez is the Founder of Mortgages Lab, a licensed mortgage broker with over 20 years of experience helping Canadians achieve financial freedom. He has trained 100+ mortgage agents across Canada, served as a former Mortgage Manager for TD Canada Trust, and was Past President of the Canadian Mortgage Broker Association – BC. He is the author of "From Debt to Zero," a guide to becoming mortgage free.
P.A.Y.O.F.F™, L.A.B™, M.A.P™ are Trademarks of Mortgages Lab®
Financial Disclosure
This page contains informational content only and does not constitute financial advice. Mortgage rates shown are sourced from publicly available lender data and may change without notice. Always verify rates directly with the lender. Mortgages Lab may receive compensation from partner lenders, which does not influence our editorial content or rate rankings. Built on Real Experience — 20+ years of working with real mortgage scenarios and helping Canadians achieve financial freedom.
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