Sources
Sources and data
Best-today rates come from published rate listings, collected November 1, 2026 and checked against lenders' own pages. Typical, posted and prime figures come from the Bank of Canada (refreshed November 1, 2026). Rules come from OSFI, the Department of Finance, FCAC and federal law.
Best-today rates
Lowest listed rates by province, term and insurance class from WOWA.ca, a Canadian rate-comparison site, read by a script that keeps each listing's update date. We are not affiliated with WOWA.ca or any lender. Lenders' own pages checked the same day:
- nesto — rates page
- Butler Mortgage — rates page
- True North Mortgage — rates page
- Tangerine — rates page
- Ratehub.ca — dated best-rate statement (cross-check)
Switching and qualifying rules
- OSFI — exempts uninsured mortgage straight switches from the prescribed MQR (November 21, 2024)
- OSFI — Minimum qualifying rate for uninsured mortgages
- Department of Finance Canada — Straight switches and portfolio insurance (December 16, 2024)
Bank of Canada data
All 28 series are retrieved from the Bank of Canada Valet API and used under the Bank's terms of use. Each series, its code, value and date is listed on the benchmarks page. Human-readable tables:
- bankofcanada.ca/core-functions/monetary-policy/key-interest-rate/
- bankofcanada.ca/rates/banking-and-financial-statistics/posted-interest-rates-offered-by-chartered-banks/
- bankofcanada.ca/rates/interest-rates/t-bill-yields/
- bankofcanada.ca/rates/interest-rates/canadian-bonds/
- bankofcanada.ca/rates/banking-and-financial-statistics/
Rules and consumer information cited in guides
- Bank of Canada — Banking and financial statistics
- Bank of Canada — Canadian bond yields
- Bank of Canada — Policy interest rate
- Bank of Canada — Posted interest rates offered by chartered banks
- FCAC — Borrowing home equity
- FCAC — Breaking your mortgage contract
- FCAC — Choosing a mortgage
- FCAC — Mortgage terms and amortization
- FCAC — Reduce prepayment penalties
- FCAC — Renewing your mortgage
- FCAC — Rights: lines of credit
- FCAC — When interest rates rise
- FCAC — Your rights: mortgages
- Justice Laws — Interest Act
What we don't use
No paid placements, affiliate rate tables, reviews or testimonials. Worked examples use illustrative inputs stated beside them, and every number in them is computed by the site's own code.