The 120-Day Renewal Window: What Your Lender Can and Can't Do

What the 120-day window actually is

Most Canadian lenders will let you lock in your renewal terms starting about 120 days — four months — before your mortgage matures, without any penalty for doing it early. That window is a lender convention, not a legal requirement, but it's widely offered and it's worth using on purpose rather than by accident.

The protection runs both ways, within the terms your lender sets. If the cost of borrowing moves up between the day you lock in and your actual maturity date, you generally keep what you locked. If it moves down instead, most lenders will let you take the better terms available closer to your renewal date — subject to their own conditions, according to reporting by BNN Bloomberg. It's not a guarantee of any specific outcome — it's an option to fix your position early instead of waiting until the last possible moment.

The exact number of days isn't universal. Some lenders offer 150 or even 180 days rather than 120, and the terms attached to locking in early — whether you can still change your mind, whether switching term length resets anything — are set by that lender, not by a single national rule. That's worth confirming directly rather than assuming, especially if you're comparing an early lock-in from your existing lender against a competing offer elsewhere: the two windows won't necessarily line up.

Locking in early also doesn't mean you've committed to the fixed-versus-variable decision, or the term length, on the spot. It fixes a starting point you can still walk back from if something changes before maturity, which is a very different thing from signing the final renewal documents. Treating the two as the same step is part of what makes people put off starting the conversation at all.

The legal minimum is a much shorter window

It's worth knowing what you're actually guaranteed, separate from what's commonly offered. Under rules enforced by the Financial Consumer Agency of Canada, a federally regulated lender must send you a renewal statement at least 21 days before your term ends — and must give you the same 21 days' notice if it has decided not to renew you at all. That statement has to contain the same kind of information you'd see applying for a new mortgage: principal, pricing, payment schedule, term, amortization, prepayment privileges and applicable fees.

Twenty-one days is barely enough time to read an offer carefully, let alone compare it against other lenders and move your mortgage somewhere else if it isn't competitive. That gap — a 120-day practical window most lenders offer, against a 21-day legal floor — is exactly why waiting for the letter to arrive before doing anything is the single easiest way to lose the advantage the early window was offering you.

The traps hiding inside a renewal letter

A renewal letter from your existing lender is not written to get you the best available terms — it's written to be easy to accept. Left unanswered, many renewal offers default a borrower into standard list pricing or a short-term product, rather than the lender's most competitive offer for a renewing customer, per BNN Bloomberg's reporting.

• FCAC research cited in that reporting found 13% of mortgage holders didn't know negotiating at renewal was even an option.
• 37% of mortgage holders said they picked their lender mainly because they already banked there — inertia, not a comparison.
• Over 1.5 million Canadian households had already renewed into higher payments as of mid-2026, according to CMHC, with roughly another million due to renew before the year is out.

None of that means your existing lender's offer is automatically bad — sometimes it genuinely is the best terms available. The point is that you can't know that without comparing, and a passive renewal removes the chance to. Doing nothing isn't a neutral choice here: most renewal systems are built to auto-renew a mortgage that goes unanswered, on whatever terms the letter specified, which quietly turns silence into acceptance.

What to actually do inside the window

Mark your maturity date and work backward from it, rather than forward from whenever the renewal letter shows up. Around the 120-day mark, start actively comparing: ask your existing lender what they can genuinely offer a renewing customer, and see what else is available across other lenders before deciding. Requalifying is part of switching — a lender you're moving to will check your file against the current qualifying benchmark, the same way a new purchase would be checked.

• Confirm your exact maturity date and your lender's specific early-lock policy — don't assume 120 days if you haven't checked.
• Ask your existing lender directly what they can offer a renewing customer, in writing, rather than waiting for the automatic letter.
• Get at least one comparison from outside your current lender before deciding — that's the only way to know whether the first offer was competitive.
• Confirm what happens if you lock in early and conditions shift before maturity — specifically, whether you can still move to better terms if they appear.

If you're weighing whether to renew early at all, or whether a mid-term restructuring makes more sense for your situation, our RateShield Advance page walks through structured strategies for households who don't want to simply wait for their letter. And Mortgage Calculators lets you model what different terms actually mean for your payment, on real Canadian semi-annual compounding, before you commit to anything.

The bottom line

The window that actually protects you opens months before the letter that legally has to. Using the 120 days most lenders offer, instead of the 21 you're guaranteed, is the difference between renewing on purpose and renewing by default.