Rate Alert: Big Bank Mortgage Rates Kept Rising While the Bond Yield Fell
The five-year bond yield fell 17 basis points over the past month and advertised bank fixed rates rose anyway — the Big Six now sit 102 basis points above the best board rate.
Friday, October 16, 2026 — Toronto. Big bank mortgage rates rose again this week while the bond market moved the other way. TD lifted its advertised fixed rates on Thursday, one day after Scotiabank. The five-year Government of Canada bond yield closed at 3.486% on October 15, down about nine basis points on the day and roughly 24 below its September high of 3.729%. The Big Six now average 5.36% on an uninsured five-year fixed; the sharpest insured five-year fixed on the public comparison boards is 4.34%. That 102-basis-point gap is worth $288 a month on a $500,000 mortgage. The Bank of Canada decides on October 28.
Through September the link was simple: yields rose, so fixed rates rose. That link has broken. The yield has given back most of its spike and big bank mortgage rates have kept climbing anyway. If you are renewing inside four months, this is the week the cost of convenience became measurable.
What big bank mortgage rates did this week
The repricing has been steady rather than dramatic: five to twenty basis points at a time, on different days, by different lenders.
| Lender | Date | Change | Advertised rate |
|---|---|---|---|
| TD | Oct 15 | 1-year fixed +20 bps | 5.69% |
| TD | Oct 15 | 3-year fixed +10 bps | 5.24% |
| TD | Oct 15 | 5-year fixed +5 bps | 5.39% |
| Scotiabank | Oct 14 | 2-year fixed +10 bps | 5.24% |
| BMO | Oct 7 | 5-year fixed +20 bps | 5.14% |
| RBC | Oct 6 | 1- to 5-year +10 to 20 bps | Varies by term |
Step back a month and the moves are larger. Since early September, TD and RBC have lifted several terms by 40 to 50 basis points. CIBC has moved most terms about 20. BMO, National Bank and Scotiabank have gone 10 to 30. RBC also trimmed its discount on new five-year variable mortgages, which raises the effective variable rate without the Bank of Canada touching anything.
These big bank mortgage rates are publicly advertised specials. Broker-channel pricing at the same institutions is usually lower, and a bank will often discount for a borrower who pushes. The advertised number is simply what a renewing borrower sees first.
The bond yield went the other way
Five-year fixed pricing is built off the five-year Government of Canada bond yield, and the mechanics are set out in our piece on how the five-year bond yield drives fixed mortgage rates.
That transmission has gone quiet. The yield peaked at a 52-week high of 3.729% in September during a global bond selloff driven by firm crude and renewed inflation worry. It closed at 3.575% on October 14, then 3.486% on October 15 — down roughly 17 basis points over the month. Yields remain about 84 basis points above a year ago, so this is no rally. But the four-week direction is down, and big bank mortgage rates have gone up.
The spread is where your money goes
The gap between the five-year bond yield and a five-year fixed rate is the lender's gross margin. Nine days ago that spread on the best available fixed rate was 71 basis points. Here is where it sits now, measured against the October 15 yield of 3.486%.
| Five-year fixed | Rate | Spread over bond yield |
|---|---|---|
| Best insured rate on comparison boards (Oct 16) | 4.34% | 85 bps |
| Lowest uninsured rate quoted (Oct 15) | 5.09% | 160 bps |
| Big Six average, uninsured (Oct 15) | 5.36% | 187 bps |
| TD advertised special (Oct 15) | 5.39% | 190 bps |
The competitive end of the market is earning 85 basis points over funding; the big banks are earning more than twice that. Part of the difference is real — uninsured lending carries more capital cost than insured, and the 4.34% is a high-ratio product many renewers cannot access. But capital rules do not explain a 102-basis-point gap. Big bank mortgage rates are being set on what borrowers will accept, not only on what funding costs.
What the big bank mortgage rates gap costs you
Every figure below is calculated on a $500,000 balance over a 25-year amortization using Canadian semi-annual compounding.
| Rate | Monthly payment | Paid over 5 years | vs 4.34% |
|---|---|---|---|
| 3.41% variable (prime − 1.04%) | $2,472.66 | $148,360 | −$15,024 |
| 4.34% best insured fixed | $2,723.07 | $163,384 | — |
| 4.59% insured fixed, second board | $2,792.44 | $167,546 | +$4,162 |
| 5.09% lowest uninsured fixed | $2,933.69 | $176,022 | +$12,638 |
| 5.36% Big Six average uninsured | $3,011.33 | $180,680 | +$17,296 |
| 5.39% TD advertised fixed | $3,020.02 | $181,201 | +$17,817 |
The payment gap is only half of it. At 4.34%, that mortgage amortizes down to $437,811 after five years. At 5.36% it reaches only $445,001. You pay $17,296 more and end the term owing $7,190 more — about $24,000 in total cost over one term.
Scale it to your balance. On $450,000 the same 102-basis-point gap costs $259 a month. On $700,000 it costs $404 a month, or $24,215 over five years.
Why big bank mortgage rates rose while yields fell
Three things are happening at once, and none is about this week's yield.
First, lenders are pricing for October 28 rather than for today. Mid-October market pricing put roughly a 24% to 28% chance of a hike to 2.50% on October 28, and 76% to 90% odds of a hike by the December 9 decision. The Bank of Canada has held at 2.25% through seven consecutive decisions this year, most recently September 2, and prime has sat at 4.45% since the October 2025 cut. Anyone writing five-year paper today is funding it across a period in which the policy rate looks likelier to rise than fall.
Second, October 28 carries a Monetary Policy Report — the meeting where the Bank restates its inflation forecast. Lenders tend to build cushion ahead of an MPR rather than after it.
Third, the data is mixed. August CPI held at 3.0% year over year for a second straight month, with gasoline up 22.8% but core measures tame: CPI-trim 1.9%, CPI-median 2.0%. Then the September Labour Force Survey on October 9 showed employment down 68,000 and unemployment up to 6.5% — the kind of print that argues against a hike, and which pushed the market's hike expectation from October to December. September CPI lands Monday, October 19 at 8:30 a.m. ET and will move the odds again.
All of that is market expectation, not forecast. Pricing can reverse on a single data release, and big bank mortgage rates can reverse with it.
What to do in the next twelve days
If your renewal is inside four months, the window between now and October 28 is the useful one.
- Take a rate hold today, not after the decision. Most lenders hold a rate 90 to 120 days at no cost, and the hold protects you if rates rise while it is live. Our guide to how long mortgage rate holds last covers the mechanics.
- Price the switch before you price the renewal. Get your lender's best number, then two outside quotes, and treat big bank mortgage rates as an opening position rather than a final one. The real cost of signing your bank's renewal offer is usually the biggest number in the exercise.
- Use the straight-switch exemption. Since late 2024, OSFI has not required the stress test on a straight switch of an uninsured mortgage at the same balance and amortization. The new lender still has to approve you.
- Compare three-year against five-year. A three-year fixed at 4.34% prices below several five-year options. If the market is right that the policy rate rises into 2027 then normalizes, a shorter term can be the cheaper bet — an expectation, not a guarantee.
- Run the variable math with a hike in it. A variable at prime minus 1.04% is 3.41% today, $250 a month under the best fixed. Two quarter-point hikes take it to 3.91%, still $117 under. Know your break-even before choosing.
- Diarize October 19 and October 28. CPI moves the odds; the decision sets prime for the next six weeks.
The practical read
Big bank mortgage rates are no longer tracking the bond market closely enough for a renewing borrower to treat a bank quote as a market quote. The yield fell 17 basis points over the past month and advertised fixed rates rose. The premium for signing the first offer you are handed is now roughly a full percentage point, and on a $500,000 mortgage that is $288 a month.
Nobody can promise where rates go after October 28, and no lender should claim to. What you can establish today is the spread between what you are offered and what is available, and right now it is unusually wide.
Common questions
Why did big bank mortgage rates rise when the bond yield fell?
Lenders price forward, not backward. The October 28 decision carries a Monetary Policy Report and roughly a one-in-four chance of a hike, with much higher odds priced by December 9. Lenders widen spreads ahead of that uncertainty. Renewal volumes are also heavy and demand is relatively insensitive to small moves. Big bank mortgage rates reflect both funding costs and pricing power, and this month the second has been doing more of the work.
Is 5.36% a bad rate?
It is the Big Six average on an uninsured five-year fixed as of October 15, about 102 basis points above the best insured board rate. How close you get to the sharp end depends on your file: insured high-ratio borrowers see the lowest numbers, while uninsured borrowers with 20% or more equity typically price 50 to 75 basis points higher. The useful test is not whether 5.36% is bad in the abstract, but whether two other lenders will beat it on your file. Usually at least one will.
Should I lock in before October 28 or wait?
A rate hold costs nothing and does not bind you, so taking one now is close to a free option: if rates fall you re-quote, and if big bank mortgage rates keep rising you keep the held rate. Waiting without a hold is the position that carries risk. Nobody can tell you which way October 28 goes, and anyone guaranteeing a direction is guessing. Secure the hold, then decide term length once the October 19 CPI print and the decision are on the record.
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Canada's 5-year bond yield closed at 3.63% on October 5, 2026 and the best five-year fixed sits at 4.34% — a spread of 71 basis points against a normal 100 to 200. If lenders restore a 130-point markup with yields flat, a $500,000 mortgage costs $1,981 more a year. Here is the math, and the three releases before the October 28 decision.
