How Mortgage Rates Are Set in Canada: Why Fixed Rates Follow Bond Yields, Not the Bank of Canada

How Mortgage Rates Are Set in Canada: Why Fixed Rates Follow Bond Yields, Not the Bank of Canada

Short answer: The Bank of Canada does not set your mortgage rate. Your lender does. The Bank sets one number, its policy interest rate, and that number reaches your mortgage through two completely different chains. Variable rates hang off your lender's prime rate, which moves when the Bank moves. Five-year fixed rates are priced off the five-year Government of Canada bond yield plus a lender spread, and bond yields move every trading day whether the Bank acts or not. That split is why 2026 produced a full year of headlines about a Bank that held steady at 2.25% while fixed mortgage rates quietly rose. If you only watch Bank announcements, you are watching the wrong signal for a fixed rate, and only half the signal even for a variable one.

This matters in dollars, not just mechanics. On a $500,000 mortgage with a 25-year amortization, the difference between a 4.50% fixed rate and a 3.55% variable rate is about $258 a month ($2,767 versus $2,510, using the standard Canadian semi-annual compounding formula). On a renewal, a single percentage point on a $400,000 balance with 20 years left is about $216 a month. Borrowers who understand which chain their rate hangs off make better decisions about term, timing and rate holds. Borrowers who treat every mortgage rate as if the Bank set it directly tend to be surprised at exactly the wrong moment. This guide walks through both chains step by step, works the math with labeled examples, and ends with what to actually watch before you sign or renew.

The two rate chains at a glance

Every Canadian mortgage rate you will ever be quoted is built the same way: a benchmark, plus or minus adjustments. The benchmark is what differs.

	Variable rate mortgage	Five-year fixed rate mortgage
Starting benchmark	Bank of Canada policy rate, through lender prime	Five-year Government of Canada bond yield
Who sets the middle step	Your lender sets its own prime rate	Bond investors set the yield in daily trading
Typical relationship	Prime has commonly sat near policy rate plus 2.20 points	Fixed rate has commonly sat near bond yield plus 1 to 2 points
When it can change	Mainly around the Bank's eight scheduled decision dates a year, plus lender discount changes	Any trading day, whenever bond yields move enough
What moves it most	Bank of Canada decisions on inflation and growth	Inflation expectations, growth data, U.S. bond yields, government bond supply, global risk
Your payment during the term	Rate floats; payment or amortization absorbs the change depending on product type	Rate and payment are locked until renewal

Neither chain is secret. Lenders describe the prime link openly, and the bond link is the standard explanation in Bank of Canada and Financial Consumer Agency of Canada educational material: the Bank influences mortgage rates rather than setting them, and it influences fixed and variable rates differently. The rest of this article is about making that influence concrete enough to use.

Chain one: how a variable rate is actually built

A variable mortgage rate in Canada is quoted as prime plus or minus a fixed discount or premium that is locked in for your term. The arithmetic has three steps.

Step 1: the Bank of Canada policy rate. The Bank sets a target for the overnight rate, announced on eight scheduled dates a year. Through 2026 this rate has sat at 2.25%: the Bank has held it there since October 2025, including at its September 2, 2026 decision, which our September 2026 hold analysis covered in detail. The next scheduled decision after that hold is October 28, 2026.

Step 2: lender prime. Each lender sets its own prime rate for its best borrowers. The Bank does not set prime. In practice, most large Canadian lenders have moved prime in step with the policy rate and have priced it at about 2.20 percentage points above it. Treat that 2.20 figure as a long-running convention, not a rule: a lender can widen or narrow it, and a few smaller lenders price prime slightly differently from the big banks.

Step 3: your discount or premium. Your contract might read prime minus 0.90, prime minus 0.40, or prime plus 0.20, depending on the product, your profile and how hard the lender wants your business that week. That adjustment does not change during your term. Only the prime underneath it moves.

A worked illustration, using the actual policy rate in place in the fall of 2026 and the common spread convention, labeled clearly as arithmetic rather than a quote: policy rate 2.25% plus a 2.20-point spread implies prime near 4.45%. A borrower quoted at prime minus 0.90 would then pay about 3.55%. Your real prime and your real discount are whatever your lender publishes and signs, and both deserve confirmation in writing, because the illustration only shows the shape of the build. The mortgage rates hub tracks how these pieces are presented to borrowers, and our fixed versus variable guide compares how the two products behave once you hold one.

Two product details decide how a prime move feels. In an adjustable-rate mortgage, the payment itself rises and falls with prime. In a variable-rate mortgage with fixed payments, the payment stays put and the split between interest and principal shifts instead; if rates rise far enough, the payment may no longer cover the interest, which is the trigger-rate problem that squeezed borrowers in the last hiking cycle. Home equity lines of credit sit on the same chain, usually at prime plus a premium, which is why our home equity borrowing guide treats a Bank decision as a direct HELOC payment event.

One more timing point borrowers miss: lenders can change the discount on new variable offers at any time, even when the Bank does nothing. Prime is the moving part most people watch, but the minus in prime minus 0.90 is a commercial decision, and it tightens or loosens with funding costs and competition between Bank announcements.

Chain two: how a five-year fixed rate is actually built

A fixed rate starts in the bond market, not at the Bank.

Step 1: the Government of Canada bond yield for your term. When the government borrows for five years, investors demand a return, expressed as a yield. That five-year yield is set by daily trading and reflects what investors collectively expect for inflation, growth and future Bank of Canada policy over the next five years, plus global forces, especially U.S. bond yields. A three-year fixed rate keys off the three-year yield and a ten-year fixed off the ten-year yield for the same reason: lenders match the term of the money to the term of the mortgage.

Step 2: the lender spread. On top of the matched bond yield, the lender adds a spread to cover the cost of raising and hedging the funds, servicing the loan, regulatory capital and profit. That spread has commonly run between 1 and 2 percentage points for a five-year fixed rate, wider or narrower with competition and risk appetite. When lenders are hungry for mortgage growth, spreads compress and fixed rates fall faster than yields. When balance sheets are tight, spreads widen and fixed rates stay sticky even as yields ease.

Step 3: your borrower adjustment. Insured, insurable and uninsured mortgages price differently because the risk and funding treatment differ. Credit profile, property type and term choice move the final quote around the spread. The benchmark gets you to the neighbourhood; your file gets you to the house.

Here is the build with round, hypothetical numbers, labeled as an illustration and not a market quote: if the five-year Government of Canada yield were 3.00% and a lender priced at a 1.50-point spread, the starting five-year fixed rate would be about 4.50%. Feed that rate into the Canadian mortgage formula (nominal rate compounded semi-annually, converted to a monthly rate) on a $500,000 balance with a 25-year amortization and the payment is $2,767 a month. The same mortgage at the 3.55% variable illustration above pays $2,510 a month. The $258 gap is the price of certainty in this example, and it inverts whenever bond yields and prime cross the other way. Run your own balance and rate pair through the mortgage payment calculator rather than trusting any printed example, including ours.

This chain explains the most common mortgage confusion in Canada: fixed rates moving with no Bank announcement at all. Bond yields trade every day. A hot inflation print, a strong jobs report, a sell-off in U.S. Treasuries or a heavy week of government bond issuance can lift the five-year yield on a Tuesday, and lenders can reprice fixed offers on Thursday. Nothing about that requires the Bank to speak.

The 2026 divergence, in one paragraph of receipts

If the two-chain model sounds tidy, 2026 supplied the proof. The Bank of Canada held its policy rate at 2.25% from October 2025 through its September 2, 2026 decision, a streak our affordability and renewal coverage has tracked all year, including the September 2026 affordability meter. Variable pricing anchored to prime therefore barely moved. Over the same stretch, the five-year Government of Canada bond yield rose from about 2.72% in late February 2026 to a 12-month high near 3.36% in August, and lenders raised five-year fixed rates twice within five days that month. A borrower waiting for a Bank cut to bring fixed rates down watched the wrong gauge for eight months. The Bank was never the fixed-rate signal. The bond market was.

There is a forward-looking lesson in that episode. Fixed rates are the market's forecast, priced today. By the time the Bank actually cuts or hikes, bond yields have usually moved weeks or months earlier on the same data that will drive the decision. That is why fixed rates sometimes fall before a widely expected cut (the market already priced it) and can even rise after a cut (the market decides the Bank is behind on inflation). It feels backwards only if you assume the Bank sets the rate. Once you see the bond chain, the sequence makes sense.

What pushes each benchmark around

Inflation is the master variable for both. The Bank targets 2% inflation. Persistent inflation above target argues for a higher policy rate, which lifts prime and variable rates directly. The same inflation scare lifts bond yields, because investors demand more return to lend for five years into rising prices, which lifts fixed rates. Falling inflation toward target relieves both chains, usually the bond chain first.

Growth and jobs data move bonds before they move the Bank. A strong GDP or employment release can push the five-year yield up within hours, because traders reprice the odds of future Bank action immediately. The Bank itself meets only eight times a year. Bond yields therefore react to the data calendar: inflation, jobs and GDP releases are the dates to circle if you are pricing a fixed rate or a renewal.

U.S. rates spill north. Canadian bond yields are heavily influenced by U.S. Treasury yields. American inflation surprises, Federal Reserve signals and global risk events (tariffs, energy shocks, conflicts) routinely move Canadian fixed rates on days when nothing Canadian happened at all. Our stress test guide shows the other half of that story: whatever rate you sign, federal qualification tests you higher.

Lender funding and appetite set the spread. Two lenders can quote different fixed rates off the identical bond yield on the identical morning. Deposit competition, mortgage-backed funding costs, capital rules and simple hunger for volume all live in the spread. This is the part of your rate that shopping actually negotiates, which is why brokers and competing quotes matter more at the spread level than at the benchmark level.

Your file sets the final adjustment. Credit history, down payment size, insured versus uninsured status, property type and amortization length all reprice the offer. The benchmark explains the market's rate. Only your application explains yours.

Posted rates, discounted rates and rate holds, translated

Three pieces of vocabulary cause most of the confusion at signing time.

A posted rate is the lender's list price, used for calculations like penalties and rarely the rate a qualified borrower actually pays. A discounted rate is the real offer after the lender shaves the posted number for your file. When you compare lenders, compare discounted contract rates and the fine print attached to them, never posted rates.

A rate hold (also called a rate guarantee) locks a discounted offer for a window while you shop or close, commonly 90 to 120 days depending on the lender and product. Holds matter precisely because the fixed chain moves daily: a hold converts a moving bond market into a ceiling for your purchase window, while still letting you take a lower rate if fixed pricing improves before closing at many lenders. Ask whether your hold is a ceiling or a lock, how long it runs, and whether it survives a switch from a purchase to a refinance. Those details are product-specific, so get them in writing rather than assuming the common pattern applies.

Finally, the rate that qualifies you is not the rate you pay. Federal rules test insured and most uninsured borrowers at a qualifying rate well above the contract rate. Our CMHC premium guide covers the insurance cost side of high-ratio borrowing, and the down payment rules hub covers how your down payment decides which of those rate categories you are even shopping in. A first-time buyer stacking programs should also read the GST rebate guide, because tax cash at closing changes how much mortgage you need, even though it does not change the rate chain itself.

How to use this before you sign or renew

You cannot control either benchmark. You can control which chain you are exposed to, when you lock and how much spread you pay.

If you are buying and leaning fixed, watch the five-year Government of Canada bond yield in the weeks before you write an offer, not the Bank calendar. A yield that has jumped a quarter point will usually show up in fixed offers within days. A rate hold taken early in your search is cheap insurance against that drift.

If you are leaning variable, your calendar is the Bank's. Know the next two decision dates, know whether your product is adjustable (payment moves) or fixed-payment variable (amortization moves), and know your trigger-rate math before prime tests it. Stress-test your own budget one point higher: on a $400,000 balance with 20 years remaining, one point is roughly $216 a month ($2,522 at 4.50% versus $2,738 at 5.50% in our worked example). If that increase breaks the budget, the variable discount is not a saving, it is a risk you are being paid too little to hold. The affordability calculator and the stress test calculator let you run your real numbers instead of our illustrations.

If you are renewing, start earlier than feels necessary, get your current lender's offer in writing, and take at least one outside quote. Renewal pricing lives in the spread, and spreads are where lenders compete. Ask any lender quoting you a variable renewal to state prime, the discount and the exact payment at prime plus one point. Ask any lender quoting a fixed renewal what five-year yield the quote was priced off. Most borrowers never ask. The ones who do find out quickly whether they are being offered the market or a margin.

None of this picks a winner between fixed and variable, because there is no universal winner, only a match between a rate chain and a household. A fixed rate buys payment certainty valued in dollars per month. A variable rate buys a lower starting payment and lower typical break penalties in exchange for living with the Bank's calendar. Our mortgage prepayment penalty guide is worth reading before you decide, because the cheapest rate with the wrong penalty formula is often not the cheapest mortgage.

Frequently asked questions

Does the Bank of Canada set mortgage rates in Canada?

No. The Bank of Canada sets only its policy interest rate. Lenders set mortgage rates themselves. Variable rates are influenced directly because lenders base their prime rates on the policy rate. Fixed rates are influenced indirectly, mainly through Government of Canada bond yields, funding costs and competition.

Why did fixed mortgage rates change in 2026 when the Bank of Canada did not move?

Because five-year fixed rates are priced off the five-year Government of Canada bond yield, not the policy rate. The Bank held its policy rate at 2.25% from October 2025 through September 2026, while the five-year bond yield climbed from about 2.72% in late February to near 3.36% in August. Lenders raised fixed rates in response to the bond market, with no Bank announcement involved.

What is the prime rate and how is it calculated?

Prime is a lending rate each lender sets for its most creditworthy borrowers. Most large Canadian lenders have historically priced prime at the Bank of Canada policy rate plus about 2.20 percentage points. At the 2.25% policy rate held through September 2026, that convention implies prime near 4.45%. Your lender sets and publishes its own prime, so confirm the current figure in writing before you sign.

How is a five-year fixed mortgage rate built?

Start with the five-year Government of Canada bond yield, then add a lender spread that covers funding, servicing, hedging, capital and profit. That spread has commonly run between 1 and 2 percentage points. If the five-year yield were 3.00% (a hypothetical illustration) and your lender's spread were 1.50 points, the resulting fixed rate would be about 4.50% before any borrower-specific discount or premium.

If the Bank of Canada cuts its rate, will my fixed mortgage payment fall?

Not during your current term. A fixed rate is locked for the term you signed, so a policy change does not change your payment until you renew, refinance or buy again. Bond yields may move in advance of a Bank decision, which means new fixed rates sometimes fall before a cut is announced, or rise even when the Bank is expected to cut.

What should I watch if I am renewing in the next six months?

Watch two different signals. For a variable renewal, watch the Bank of Canada decision dates and your lender's prime. For a fixed renewal, watch the five-year Government of Canada bond yield, which moves daily. Get written renewal pricing early, ask what a one-point increase would do to your payment, and compare at least one offer from outside your current lender.

Why is my neighbour's rate lower than the rate I was quoted?

The benchmark is only the starting point. Your final rate also reflects your credit profile, your down payment and whether the mortgage is insured, insurable or uninsured, the property type, the term length and the lender's current appetite for business. Two borrowers can be quoted rates a half point apart on the same day from the same benchmark.

The bottom line

Canadian mortgage rates are two different products wearing similar labels. Variable rates follow the Bank of Canada through lender prime, in steps, on a published calendar. Fixed rates follow bond investors through Government of Canada yields, continuously, on the bond market's calendar. The Bank held at 2.25% all through 2026 while the five-year yield climbed and fixed rates rose, and that single episode teaches the whole system: watch prime if you float, watch the five-year bond if you fix, shop the spread either way, and confirm your own prime, discount and hold terms in writing. Benchmarks explain the market. Your signed contract explains your payment.

Sources and method: Bank of Canada policy rate history and decision calendar (policy rate held at 2.25% from October 2025 through the September 2, 2026 decision); lender prime convention (policy rate plus about 2.20 points at most large lenders) and fixed-rate spread range (bond yield plus about 1 to 2 points) as described in lender and Financial Consumer Agency of Canada educational material; five-year Government of Canada bond yield path in 2026 (about 2.72% in late February to near 3.36% in August) from market reporting of lender repricing. Payment figures were calculated with the standard Canadian mortgage formula (nominal annual rate compounded semi-annually) and are labeled illustrations, not quotes. Rates, primes and yields change; confirm your actual rate, prime and discount with your lender or a licensed mortgage broker before signing. This article is educational and is not financial advice.