Should You Lock In Your Variable Rate After The October Hike?

Many lenders let a variable-rate borrower convert to a fixed rate mid-term, at whatever fixed rate the lender is offering that day. After the October 2026 hike the question is whether that offer beats a fixed quote from elsewhere. At 3.80% variable on $500,000 the payment is $2,576.17; at 4.49% fixed it is $2,764.59. The conversion offer has to be set against both.

The October 28 decision changed the variable payment by 25 points and left the fixed rates mostly where bond yields had put them weeks earlier. That makes the lock-in question sharper, not simpler. You are asking whether paying more per month for certainty is worth it, and whether the lock-in route is the cheapest way to get it.

Can You Lock In A Variable Rate Mortgage?

Usually yes, but it depends on the contract. A conversion option lets you move from variable to a fixed term, within limits the contract sets. The rate is the lender's fixed rate on the day you convert, often described as a posted or conversion rate rather than the discounted rate a new customer might be offered. Your agreement states whether it applies and whether any fee does.

The key point is that you are borrowing the same lender's rate card. A broker can price a fixed rate from many lenders. A conversion cannot, because it stays in house. Where the two differ, the difference is cash. Checking only costs a conversation.

Lock In Versus Staying Variable, In Payments

Payments below use $500,000 over 25 years. The variable figures assume a prime minus 0.90 discount, which was 3.55% against the old prime and is 3.80% against 4.70%. The fixed figures are advertised rates around October 28 from aggregator and board reports; they are not quotes for any one borrower.

The lowest advertised fixed costs $188.41 more per month than the variable today, about $11,304.76 over five years of payments. That is what certainty is priced at, for the borrower with the best discount and an insured file. The big-bank specials priced even higher. If the conversion offer lands near those, the premium for locking in is larger than the market's low.

What One More Hike Does To That Gap

BMO expects another 25 points in January 2027 (Financial Post). CIBC sees one more as likely and does not expect the overnight target above 2.75% (Reuters). Desjardins expects one more, timing depending on data. Those are their views. If one more happened and was passed into prime, the variable above would sit at 4.05%, $2,643.67, and the gap to the 4.49% fixed would narrow to $120.91 a month.

Narrowing is not closing. For the variable to cost the same as that fixed over the term, prime would need to average roughly 0.69 points above its new level, which is closer to three more increases than one. The Bank itself said only that a further increase may be needed and that it will proceed carefully. This arithmetic does not say that will not happen. It says what has to happen for locking in to have been the cheaper choice, which is a different question from whether it feels safer.

The Conversion Offer Is Not The Only Fixed Rate

This is the practical heart of the matter. Breaking a variable to move to a different lender usually costs three months' interest. On $500,000 at 3.80% that is $4,750.00. If the fixed quote elsewhere is meaningfully lower than the conversion offer, the break cost is the number to weigh. A 0.20 point lower rate on $500,000 saves roughly $55.29 a month, about $3,317.55 over five years, which is less than the $4,750.00 break fee in that illustration. On those numbers a 0.20 point gap does not pay for the move by itself; a wider one could.

These are worked examples with rates picked for illustration. The real numbers come from the conversion letter and from a fixed quote on your file. Your contract states the penalty and the conversion terms, and the penalty calculator turns them into a dollar figure.

Who Tends To Prefer Locking In

The question is mostly not about prediction. It is about what the household can absorb. A borrower whose budget has a hard ceiling at about the current payment plus a few dollars may find that a fixed payment of the same size is worth more than a variable that could rise. A borrower with room in the budget and a deep discount may find the variable's lower starting cost buys more. The fixed or variable guide frames the question in terms of the payment you would still make without changing your plans.

Timing matters too. Lenders move their conversion rates on their own schedule, and fixed rates rose about 5 to 20 basis points in October, after the 5-year bond yield climbed from about 3.0 to 3.1% in June to 3.69% on September 29. It was 3.57% on October 27. Waiting for the conversion offer to improve is itself a bet on the bond market, not on the Bank of Canada. The December 9 preview covers the next date.

Why Conversion Rates Are Worth Checking

Fixed rates move with bond yields and each lender's margin. The 5-year Government of Canada yield was about 3.0 to 3.1% in June 2026, 3.63% on September 10, 3.50% on October 22 and 3.57% on October 27. Lenders raised advertised fixed rates by about 5 to 20 basis points on various terms in October, and National Bank by 5 to 10 basis points late in the month. The Bank of Canada's conventional 5-year posted rate was 6.19% late October, up from 6.09% earlier in the month, but that figure is a posted rate, not what borrowers pay.

The reason the posted figure matters is that some penalty methods lean on it, and a conversion offer may too. A lender that converts at a rate near its posted rate is a long way above the 4.49% to 5.39% range of advertised discounted 5-year rates. The contract and the lender's written offer say which it is. A lender is not required to offer its best advertised rate for a mid-term conversion.

What To Ask A Broker

Ask for two documents side by side. One is your lender's conversion offer, in writing, with the rate, term and any fee. The other is a fixed quote from other lenders for the same term and balance, with the break cost of leaving your current mortgage stated, which for a variable is usually three months' interest. Then compare payment, break fee and term.

A licensed mortgage broker can price the fixed alternative across lenders in one request. Request cheaper rates with "variable to fixed, current balance and discount" as the first line. If you are still choosing a term, two-year or five-year fixed covers that part.

Questions

Request cheaper rates