Why Did Fixed Mortgage Rates Rise Before The Bank Of Canada Hiked?
Fixed mortgage rates rose before the Bank of Canada raised its overnight rate on October 28, 2026 because they are priced off Government of Canada bond yields, not off the overnight target. The 5-year yield climbed from about 3.0-3.1% in June to 3.63% on September 10, and lenders added about 5-20 basis points to advertised fixed rates in October.
That order of events surprises people who expected the central bank to move first and mortgages to follow. The sequence runs the other way for fixed rates. Markets guess where the policy rate is going, bond yields move with the guess, and lenders reprice. By the time the announcement came, much of the move had already happened in yields. Here is the data, the mechanism, and what the hike did and did not do.
The 5-Year Bond Yield From June To October 27
These are the Bank of Canada's 5-year Government of Canada benchmark yields for the dates shown.
| Date, 2026 | 5-year yield | Note |
|---|---|---|
| June | about 3.0-3.1% | Starting point of the climb |
| July 21 | 3.16% | Shortly after the July 15 hold |
| August 31 | 3.33% | Two days before the September 2 hold |
| September 10 | 3.63% | Sharp jump in ten days |
| September 29 | 3.69% | Highest reading in this series |
| October 1 | 3.62% | |
| October 13 | 3.55% | |
| October 22 | 3.50% | Lowest reading in October |
| October 26 | 3.58% | |
| October 27 | 3.57% | Day before the hike |
The yield rose about 0.6 of a point between June and the end of September, then eased by about 0.1 to 0.2 in October. It did not fall back to June. That is the base fixed rates are built on.
How A Yield Becomes A Mortgage Rate
A lender prices a 5-year fixed mortgage at the 5-year bond yield plus a spread. The spread covers funding costs, credit risk, the cost of the prepayment option, the broker fee or branch cost, and the lender's margin. At a 3.57% yield, the lowest advertised insured 5-year fixed rates of about 4.34-4.59% imply a spread of roughly 0.8 to 1.0 points. Big-bank specials of 4.84-4.90% imply a spread near 1.3 points. The posted rate, at 6.19% in late October, implies one near 2.6 points, which is why it is a poor guide to what anyone pays.
Spreads are not constant. They tighten when lenders compete for volume and widen when funding is costly or the lender wants fewer applications. In October, with yields falling slightly from the late September peak, advertised fixed rates still rose by about 5-20 basis points on various terms. National Bank added 5-10 basis points in late October. A lender can raise a rate while yields are flat or drifting lower if it is widening its spread.
What The October Bank Increases Looked Like
The aggregators' reports show increases across terms in October, in the 5-20 basis point range. The board shows what borrowers saw. A 5-year fixed renewal offer reported on October 21 stood at 4.24% (mega thread). A B2B rate sheet dated October 21 showed 4.54% for 5 years and 4.34% for 3 years, reported on October 27 (thread). On October 28 the TD renewal letter at 4.89% for 3 years was posted next to RBC and BMO 3-year rows at 4.44% (thread). Different lenders, different dates, a spread of several tenths of a point inside one week. These are single reports and not a trend line, but they are consistent with the aggregator view that rates had moved up.
What October 28 Did And Did Not Do To Fixed Rates
The Bank of Canada raised the target to 2.50%, up 25 basis points, the first hike since July 2023. RBC, TD, BMO, Scotiabank and CIBC raised prime from 4.45% to 4.70%, effective October 29. That changes variable mortgages, home equity lines and other prime-linked loans.
It did not reprice a closed fixed mortgage you already hold. It did not change a written rate hold. And it did not, by itself, set the day's fixed rate, since that comes from yields and spreads. The 5-year yield on October 27 was 3.57%, a touch under the late September peak. What the decision added was information: the Bank said a further increase may be needed and that it would proceed carefully. That can push yields up if markets read it as a longer path. It can also be priced in already. The October 28 decision guide has the full statement figures.
What Higher Fixed Rates Cost On $500,000
A move of 5-20 basis points sounds small. On a $500,000 mortgage over 25 years, the payment at 4.34% is $2,723.07 and at 4.49% it is $2,764.59, a $41.52 difference. At 4.84% it is $2,862.65, and at 4.89% $2,876.79. From the lowest advertised rate to the TD renewal-letter level, the difference is $153.73 a month. Using the formula in the payment guide, that is $1,845 a year. The yield rise from June to October is not the whole of that gap, since the gap includes spreads and channels, but it is the engine under it.
Why Spreads Matter More Than The Yield Alone
Two lenders facing the same bond yield can price a 5-year fixed half a point apart, and the board shows it. Cost structure is one difference. A broker-channel monoline has no branch network and pays brokers a finder's fee at funding, commonly about 0.5-1.1% of the loan, while a big bank advertising 4.84-4.90% pays for branches and advertising. On the board, the B2B broker sheet sat at 4.54% for 5 years against those bank specials. The yield sets the floor under both. The spread explains the distance between them.
What To Watch Before December 9
The next Bank of Canada decision is December 9, 2026. Before then, three things move fixed rates more than the date does.
The 5-year bond yield, which the Bank of Canada publishes daily. The October inflation data and anything that changes the read on whether more hikes are coming. BMO expects another 25 basis point hike in January 2027, to 2.75%, according to the Financial Post. Desjardins expects one more, with timing depending on data. CIBC sees likely one more, not above 2.75%, per Reuters. Those are their forecasts. They are not a schedule, and bond yields can move on the opposite side of them.
The December 9 preview covers the decision itself, and this month's direction is the page for the near-term read.
Ask A Broker For A Rate Hold Now
A rate hold, typically 90-120 days and sometimes a bit longer, fixes the quote while yields and spreads move. If a purchase or a renewal falls inside that window, a hold is the one piece of this page you can act on. It is usually attached to a pre-approval and often involves a credit check, as covered in the pre-approval guide. Request cheaper rates and ask a licensed mortgage broker to price a 3-year and a 5-year with a hold written in, and to say what happens to the hold if rates fall.
Questions
Why do fixed mortgage rates move before the Bank of Canada does?
They are priced off Government of Canada bond yields plus a lender spread. Yields move on what markets expect the central bank to do, so fixed rates often move first.
Did the October 28 hike raise my fixed mortgage rate?
Not directly. It raised prime to 4.70% from October 29, which affects variable mortgages. A closed fixed term and a written rate hold do not change.
What was the 5-year bond yield before the hike?
3.57% on October 27, 2026, per the Bank of Canada series. It was about 3.0-3.1% in June and peaked at 3.69% on September 29.
Will fixed rates rise again before December 9?
No one can say. Watch the 5-year yield and the lenders' advertised rates. Banks such as BMO and CIBC expect another Bank of Canada hike, but that is a forecast.