The Renewal Math Your Bank Ran First

Owen MacKinnon spent last Sunday evening at his kitchen table in Surrey, the renewal letter from his bank open on the counter and a spreadsheet open on his laptop. He had forty-eight hours to respond to the offer. The number at the top of the letter was 4.74 per cent. He did the math three times, which is what you do when the answer keeps coming back as something you were not expecting.

He had borrowed $650,000 in May 2021 at 1.94 per cent, 25-year amortization. His payment then: $2,728 a month. His remaining balance today: $543,000, with 20 years left to run. The bank's renewal offer at 4.74 per cent puts his payment at $3,454 a month. That is $726 more every month. $8,712 a year. For the same townhouse. No renovations. No new square footage.

The Bank of Canada held its overnight rate at 2.25 per cent on April 29. The headlines said borrowers had gotten a reprieve. Owen's spreadsheet said otherwise.

The tension here is specific: your mortgage rate and the Bank of Canada's overnight rate are not the same thing, and confusing them is costing real money in a year when roughly 1.15 million Canadian mortgages [1] are renewing. Many of those borrowers are doing what Owen did — opening a letter from their existing lender, absorbing the shock, and then either signing immediately or deciding to wait for the BoC to cut them out of the pain.

There is also a rule change that most of them don't know about, and that most renewal letters won't mention.

What the Bank of Canada Held on April 29 — and What It Didn't

The Bank of Canada's target for the overnight rate is 2.25 per cent, unchanged since October 2025. April 29 was the fourth consecutive hold. The Bank's statement flagged that CPI inflation is "likely rising further in April to about 3 per cent," driven primarily by higher oil prices tied to the conflict in the Middle East [2]. Core inflation has held just above 2 per cent. The Bank's base case is that oil prices ease and inflation returns to target by early 2027. The Bank was careful to note that risks are two-sided.

The overnight rate flows directly into prime rate — 4.45 per cent as of April 29 — and prime flows into variable-rate mortgages and home equity lines of credit (HELOCs). What it does not directly control is the rate on a fixed-rate mortgage renewal.

Fixed mortgage rates in Canada are priced off the Government of Canada five-year bond yield. That yield was 3.12 per cent on May 8 [3], having come down from 3.26 per cent the previous week. Lenders add a spread on top — typically 85 to 115 basis points for well-qualified conventional borrowers — which puts the best available five-year fixed rate at approximately 3.97 to 4.27 per cent in the broker market this week. The posted rate at the major chartered banks — the number the Bank of Canada tracks in its V80691335 series — sits at 6.09 per cent. Nobody is paying the posted rate. But plenty of people are paying something much closer to it than they need to.

Owen's bank offered 4.74 per cent. The broker market is trading best five-year fixed rates at around 4.04 per cent. The gap between those two numbers is $168 a month.

What Number Should You Actually Watch at Renewal?

The Government of Canada five-year benchmark bond yield is the number to track if you have a mortgage renewal coming up in the next six months. Not the Bank of Canada's overnight rate announcement. Not what the Bank signals for June.

Here is why. When the GoC five-year yield rises, fixed mortgage rates follow within days — lenders hedge their funding costs against those bonds, and they reprice accordingly. When the yield falls, fixed rates follow with a short lag. The overnight rate influences the bond yield indirectly, through growth and inflation expectations, but the daily move in the five-year yield is the more direct leading indicator of where your next fixed rate will land.

As of May 8, the GoC five-year yield at 3.12 per cent sits 1.68 percentage points below the prime rate of 4.45 per cent. That inversion — short-term borrowing (variable) costing more than medium-term benchmark rates (fixed) — is unusual. It reflects a bond market that is pricing in further BoC cuts over the next five years, even if not immediately. It is also part of why the best five-year fixed rates are lower than the best variable rates right now, which is the opposite of the pattern most Canadians remember from the pre-pandemic decade.

The 40-word version for anyone who wants to copy this into a search bar: the GoC five-year yield plus 90 to 110 basis points equals roughly what a competitive lender will offer you today on a five-year fixed mortgage. Right now that works out to about 4.02 to 4.22 per cent.

Owen's Numbers, Done Properly

Owen borrowed $650,000 at 1.94 per cent in May 2021, 25-year amortization. Canadian mortgages compound semi-annually by statute, so the effective monthly rate on a 1.94 per cent mortgage is approximately 0.1577 per cent — giving a monthly payment of $2,728. After 60 payments, his remaining balance is $543,000 with 20 years left.

Here is what his three realistic options look like today (all calculations assume Canadian semi-annual compounding):

All three involve a payment jump. There is no combination of BoC decisions and mortgage math that returns Owen to $2,728 a month at renewal. The question is which increase to absorb, and why.

The fixed-versus-variable decision at renewal in 2026 hinges on a single bet. If the BoC cuts twice more in the next two years — 50 additional basis points, taking prime to 3.95 per cent and Owen's variable rate to 2.80 per cent — his variable payment falls to roughly $2,980 a month. That is still $252 more than he pays now, but substantially better than locking in at 4.04 per cent.

If, instead, inflation persists above 2.5 per cent into 2027 because Middle East supply disruptions hold oil at elevated levels — the Bank's April statement identified this explicitly as a risk — and the BoC raises 25 basis points, prime goes to 4.70 per cent and Owen's variable payment rises to $3,166. He would then be paying $438 a month more than today, not $355, with no locked-in ceiling.

The variable bet is a reasonable one. It is not the only decision to make.

The Trap: Waiting for the Bank of Canada to Save Your Payment

Here is the mistake most people in Owen's situation are making this week.

They opened the renewal letter, absorbed the shock, and concluded that they should either sign quickly before rates move up, or wait for the BoC to cut before committing to a five-year term. The first instinct is understandable. The second is the one that costs money — and it has a history.

In 1994, the Bank of Canada and the U.S. Federal Reserve each held rates steady for the better part of a year, through a period of steady economic recovery and moderating inflation. Then, in February 1994, the Fed raised rates by 25 basis points — a recalibration, officials said, nothing structural. Within 12 months, the Fed had raised its benchmark rate by 300 basis points. The Bank of Canada followed, taking its rate from approximately 5.25 per cent to 8.75 per cent in roughly the same window. People holding variable-rate mortgages in 1994 who were waiting for cuts got an education in the asymmetry of that bet.

The 1994 parallel is not a forecast. The BoC's April statement describes the current risk as "small" and the base case as benign. But it is a reminder that a "hold" is not a "cut," and that a central bank that sees CPI approaching 3 per cent has limited room to signal anything but caution.

The seductive version of the trap goes like this: "I'll take a one-year fixed or stay variable, and when the Bank cuts in June or September, I'll lock into a lower long-term rate." This has surface plausibility. It also requires three things to happen on schedule: the Bank cuts, the five-year bond yield responds, and Owen acts before his next renewal window closes. It is a strategy that outsources the timing decision to events outside his control.

The actual question is simpler. Can Owen absorb the $355-a-month jump on variable without stress, given his current income and other obligations? If yes, variable is a defensible choice — he gets the lower entry payment and benefits if cuts arrive. If no, locking in at 4.04 per cent for five years costs him $203 a month more than variable, and buys certainty that has real value.

What the trap entirely ignores is that Owen hasn't yet decided who he's renewing with. And that is where the largest dollar amounts are sitting.

What OSFI Changed — and Why Your Renewal Letter Doesn't Mention It

In January 2026, the Office of the Superintendent of Financial Institutions (OSFI) confirmed an important change to Guideline B-20, the residential mortgage underwriting standard that contains the stress test [4].

Borrowers who switch lenders at renewal — moving their existing mortgage from one federally regulated institution to another — are now exempt from the stress test, provided the loan amount and remaining amortization period stay the same. Previously, switching lenders required you to requalify at the higher of your new contract rate plus two percentage points, or the 5.25 per cent floor. At a 4.04 per cent rate, the qualifying rate would have been 6.04 per cent. For many borrowers, that test was a genuine barrier — particularly those whose income or debt-to-service ratios had shifted since origination.

That barrier is gone. Owen can take his $543,000 balance, his 20-year amortization, and walk it to any competing lender. He does not need to prove he can afford a 6.04 per cent payment. He needs to prove he can afford a 4.04 per cent payment.

The financial value of shopping, in Owen's case:

• Bank's renewal offer at 4.74 per cent: $3,454/month
• Broker market best at 4.04 per cent: $3,286/month
• Difference: $168/month, $2,016/year, $10,080 over the five-year term

That is the cost of not making one phone call, and of not knowing OSFI changed the rule.

A mortgage broker — not a bank specialist, but an independent broker with access to multiple lenders — can put Owen's renewal to eight or ten lenders in a business day and return competitive offers. The broker's compensation comes from the lender, not from Owen. There is no fee for shopping.

Owen's bank knows the OSFI change happened. The renewal letter Owen received contains a polite invitation to call the bank's mortgage specialist. It does not mention that Owen can now move his mortgage without the stress test.

For prior reading on how rate decisions actually move from the Bank of Canada into products you hold, see The Rate That Didn't Move. For the 2021 version of this same renewal math — when people locked in at 1.94 per cent and felt smart — see The Renewal You Were Promised.

Use the mortgage renewal calculator to run your own balance and amortization against the current spread of available rates. The fixed-vs-variable comparison tool will run both scenarios against your actual remaining term and show you the breakeven point if rates shift 25 or 50 basis points. Current broker market rates are on the live mortgages page.

The last line Owen types into his spreadsheet is not 4.04 per cent or 3.30 per cent. It is the name of a mortgage broker referred by a colleague who renewed in January and saved $190 a month by shopping. Owen doesn't need the Bank of Canada to cut. He needs to make that call before Tuesday's deadline — and, if he misses it, to know he can ask for an extension.

A renewal offer is not a deadline. It is an opening bid.

The real decision in a year when 1.15 million mortgages are coming due is not which rate to choose. It is whether you are going to be the person who shopped, or the person who didn't. The Bank of Canada's next move has almost nothing to do with that.

Editor's note: Mortgage payment calculations in this column assume Canadian semi-annual compounding and standard amortization schedules. Rate figures reflect data as of May 8–11, 2026. Individual results vary based on lender, credit profile, and property type. Broker market rates change daily.

[1] TD Economics, "Mortgage Renewal Mission Possible: The Final Reckoning" — approximately 1.15 million mortgages renewing in Canada in 2026. [2] Bank of Canada, Opening Statement, April 29, 2026 — CPI projected to rise to approximately 3% in April driven by Middle East oil prices. [3] Bank of Canada, Selected Bond Yields — GoC 5-year benchmark yield at 3.12% on May 8, 2026. [4] OSFI, Minimum Qualifying Rate for Uninsured Mortgages — January 2026 confirmation of stress test exemption for lender switches at renewal with unchanged loan amount and amortization. [5] TD Economics / Bank of Canada Staff Analytical Note 2025-21 — fixed-rate holders renewing in 2025–2026 face average payment increases of 15–20%.