Bank of Canada Rate — How the Overnight Rate Shapes Your Mortgage

The Bank of Canada makes rate decisions on a fixed schedule — eight pre-announced dates per year, spread roughly six weeks apart. Four of those decisions are accompanied by the full Monetary Policy Report, which lays out the Bank's forecast for growth and inflation over the next two years. The other four are shorter statements. Markets price in an expected outcome before the announcement, so the actual mortgage-rate reaction is driven by how far reality lands from that expectation.

The Bank of Canada has a single formal mandate: keep annual inflation close to 2% over the medium term. When inflation runs hot, higher rates cool borrowing, spending and hiring. When the economy softens, lower rates make credit cheaper and encourage activity. The overnight rate is the primary lever, and every meeting is essentially a judgement on where inflation is heading eighteen to twenty-four months out — which is why the Bank talks so much about forecasts rather than the latest CPI print alone.

The transmission chain is short. A change in the overnight rate flows into bank funding costs within days, into prime within hours, and into every variable-rate mortgage and HELOC on the next billing cycle. The typical spread between prime and the overnight rate has been around 2.2 percentage points since 2010.

Fixed mortgage rates move through a different channel. Lenders fund 5-year fixed mortgages using 5-year Government of Canada bonds, so 5-year fixed pricing tracks bond yields. Bond yields do react to Bank of Canada expectations, but they also react to U.S. Treasury moves, oil prices and global risk appetite — which is why a fixed rate can fall in the same week the overnight rate rises.

Look past the headline number. The forward guidance in the accompanying statement — the language the Bank uses to describe future decisions — moves markets more than the current move itself. Words like "further increases will likely be required" versus "the Governing Council will continue to assess" send very different signals to bond traders, and those signals show up in 5-year fixed mortgage rates within a day or two.

If you are inside a fixed term, an announcement changes nothing about your current payment. If you hold a variable, expect your rate to reset on the next cycle. If you are shopping for a mortgage, the announcement is a good moment to re-check quotes: lenders often refresh their sheets the same afternoon, and a rate hold that was priced in can be a quiet opportunity to lock a slightly better fixed rate the following week.