Is 3.99% A Good Mortgage Rate In Canada?

As of late October 2026, 3.99% is below every fixed mortgage rate advertised in Canada around October 28, where the lowest ran about 4.34-4.44%. That makes it a good rate only if the product is not what it appears to be. It is most likely a variable rate, an insured or restricted product, a rate with fees outside it, or a quote older than October's increases.

A rate that low should prompt a question before a celebration. Sometimes the answer is fine and sometimes it is a trap. This page lists the six usual explanations, shows what 3.99% costs in dollars, and says what to ask for to find out which one you have.

Where 3.99% Sits Against The Market Around October 28

Aggregators listing lender rate sheets put the lowest 3-year fixed at about 4.44% and the lowest insured 5-year fixed at about 4.34-4.59%. Big-bank 5-year specials ran 4.84-4.90%, with TD near 5.39%. A fixed rate at 3.99% would be 35 to 45 basis points under the floor of every figure.

Nothing on the rate board shows a 3.99% fixed offer in October. The lowest fixed rows are 3.90% for 3 years, which the writer said they got (thread, October 23), and 4.14% for 3 years, a renewal offer with fees extra (mega thread, October 21) and another from a broker who quoted a hold without naming the lender (thread, October 26). The 3.90% is a self-reported figure with no lender attached, and it was posted on October 23, before the hike. The board does not show that any lender will offer 3.90% or 3.99% today.

The Six Common Reasons A Rate Looks This Low

1. It is a variable rate. Prime is 4.70% from October 29 at RBC, TD, BMO, Scotiabank and CIBC. A variable at 3.99% is prime minus 0.71. That is a plausible discount, and it appears on the board in the same neighbourhood: an RBC renewal offer at prime minus 0.70 and an RBC investment-property quote at prime minus 0.71. Those rows, like most variable rows on the board, were written when prime was 4.45%. A discount stays the same when prime moves, and the rate moves 0.25 with it.

2. It is an insured mortgage. Insured files get the lowest rates because the insurer carries the default risk. A 3.99% quoted to someone with 5% down is not a rate an uninsured borrower with 25% down should expect.

3. It is a restricted or low-frills product. Some of the lowest rates come with limited prepayment, no portability, a sale clause or a posted-rate penalty. The rate is lower because the contract gives the lender more.

4. Fees outside the rate. One 4.14% renewal row on the board came with fees extra. A fee paid up front can sit behind a lower printed rate, so the total cost is the comparison, not the rate line.

5. An older quote. Banks raised advertised fixed rates by about 5-20 basis points on various terms through October. A 3.99% quoted in September, or in a rate sheet dated before the move, may not be available now.

6. An expired hold. Holds last about 90-120 days, some longer. A rate on a hold is real until the hold expires and gone after.

What 3.99% Costs On $500,000 Against The Alternatives

Using the semi-annual compounding formula from the payment guide, over a 25-year amortization:

3.99% saves $109.48 a month against 4.39% and $249.40 against 4.89%. That is a real number. It is why the first move is to find out whether it can be had. A rate is not a good rate if it cannot be signed.

If The 3.99% Is A Variable: What The Hike Did To It

A variable at 3.99% on the new 4.70% prime is prime minus 0.71. If the quote is 3.99% against the old 4.45% prime, then at the new prime the rate would be 4.24% if the discount holds, which is a different offer. Ask which prime the 3.99% was written against, and whether the payment is adjustable or fixed. The October 28 decision guide works through the payment effect of a 25 point move, and the fixed or variable guide covers the gap between variable and fixed payments. The Bank of Canada said a further increase may be needed. BMO expects another 25 basis points in January 2027, per the Financial Post, and CIBC sees likely one more, not above 2.75%, per Reuters. Those are their forecasts, not a schedule.

If It Is Fixed: Questions That Find The Catch

Four questions settle most of it.

Is it insured, insurable or uninsured, and does the rate change if the down payment does? What is the penalty method, and is it a posted-rate IRD? What are the prepayment limits and is the mortgage portable? And is there cash back or a fee that is not in the rate? For a rate this far under the market, ask for the full contract terms before paying for an appraisal.

Three months' interest on $500,000 at 3.99% is $4,987.50. That is the floor of a fixed penalty. An IRD can be larger when rates have fallen since you signed. The clause, not the rate, decides which of those two numbers you would pay. Ask for the lender's written prepayment information before you accept any offer, since lenders are expected to follow the Code of Conduct for Mortgage Prepayment Information.

What Happens If The 3.99% Is Older Than October

Fixed rates were rising through the month, by about 5-20 basis points on various terms according to aggregator reports, and the 5-year bond yield moved from 3.33% on August 31 to 3.63% on September 10 and 3.57% on October 27. A quote from June may have been written against a yield about half a point lower, and one from late August against a yield about a quarter point lower. If someone is holding a 3.99% from before that move, the rate is worth protecting: confirm the expiry date and what the lender needs to see before closing. If instead the 3.99% is something a lender has promised but not written down, treat it as unconfirmed until it appears in a commitment letter with a rate, a term and a date.

A common mix-up also deserves a line. A 3.99% teaser on a longer amortization, or a 3.99% that applies for a promotional period and then resets, is not the same offer as a fixed rate for the term. Read the term line on the document, not only the rate line.

Ask A Broker Whether 3.99% Can Be Matched

If you have a 3.99% quote in writing, a licensed mortgage broker can check whether the same terms can be had today and whether any lender will hold it. If you do not have one, the useful ask is the lowest rate available on your file now, split into variable and fixed. Request cheaper rates and attach the 3.99% as the number to beat, along with the date it was quoted.

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