The 120-Day Rule: When to Start Shopping Your Mortgage Renewal

Here's a statistic that should bother you: the majority of Canadians sign the renewal letter their lender mails them, more or less as-is. No shopping, no negotiating, no comparison. The banks know this, which is exactly why that first renewal offer is almost never their best rate.

The single biggest factor in whether you renew well or renew badly isn't your credit score, your income, or even the rate environment. It's when you start. Start early and you have leverage, options, and time. Start late and your only realistic option is signing whatever's in front of you.

This is the timeline that gives you leverage — and it starts earlier than you think.

What the 120-Day Rule Actually Is

Most Canadian lenders will let you lock in a renewal rate up to 120 days before your term ends. Some stretch to 150 or even 180 days; a few cap it at 90. This "rate hold" works in one direction, in your favour:

• If rates rise between your rate hold and your renewal date, you keep the lower held rate.
• If rates fall, you can ask for the lower current rate before finalizing — or take a competing offer elsewhere.

A rate hold costs nothing and commits you to nothing. It is, functionally, a free option on interest rates — one of the very few free options you'll ever be handed in personal finance. Not taking it is leaving money on the table.

But the 120-day mark is when you should be locking, not when you should be starting. Rewind further.

The Renewal Timeline, Month by Month

6 Months Out: Take Inventory

Before you can shop, you need to know exactly what you have. Pull out your mortgage statement (or log into your lender's portal) and write down:

• Current balance — what you'll actually be renewing
• Remaining amortization — not your original 25 years; what's actually left
• Current rate and type — fixed or variable, and if variable, your discount to prime
• Maturity date — the day your term ends
• Prepayment room — most lenders allow 10–20% lump-sum prepayment per year without penalty

That last one matters more than people realize. If you have savings earmarked for the mortgage, the weeks before renewal are the time to use your prepayment privilege — every dollar you pay down before renewing is a dollar you don't finance at the new rate for the next five years.

This is also the moment to ask the bigger questions while you have zero time pressure: Is your amortization still right? Should you shorten it now that your income has grown — or lengthen it because cash flow is tight? Do you want to add a HELOC? Might you sell within the next term? Your answers shape what product you shop for, not just what rate.

5 Months Out: Start Collecting Quotes

Now the actual shopping begins. You want three to five real quotes, from at least two different kinds of lender:

• Your own bank's public offer — check their posted "special" rates online so you know their opening position.
• A mortgage broker — one conversation gets you visibility into dozens of monoline lenders whose rates are frequently 0.20–0.50% below big-bank specials.
• A credit union or online lender — often the sharpest pricing for straightforward files.

If you have at least 20% equity, there's a structural change working in your favour: since November 2024, federally regulated lenders no longer have to apply the mortgage stress test when you switch lenders at renewal, as long as your loan amount and amortization stay the same. We cover what that means in practice in our guide to switching lenders at renewal — the short version is that the old "you're trapped at your bank because you can't re-qualify" problem has largely disappeared for straight switches.

4 Months Out: Lock Your Rate Holds

This is where the 120-day rule earns its name. Lock a rate hold with your existing lender and with your best outside option. Both are free. Now you're protected against rate increases from two directions, and you've converted "I might switch" from a vague threat into a documented, rate-attached alternative.

A rate hold from a competing lender is the single most persuasive object you can bring to a renewal negotiation. "Can you do better?" gets a shrug. "Lender X is offering 4.09%, here's the commitment — can you match it?" gets a phone call to the retention desk.

3 Months Out: Negotiate

Take your best outside offer back to your current lender and ask them to beat it — not match it, beat it. Staying put is worth something to them (they avoid losing the loan) and it's worth something to you (no paperwork, no legal fees). The fair split of that convenience is a rate at least as good as the outside offer.

Two rounds is normal. The first "best we can do" usually isn't. Ask for the retention team specifically — front-line staff often have limited rate authority, while retention desks exist precisely to save mortgages that are about to walk. Our renewal negotiation guide has scripts for exactly these conversations.

2 Months Out: Decide and Execute

If you're staying, get the final offer in writing and confirm the product details — prepayment privileges, portability, penalty structure — not just the rate. If you're switching, this is when the new lender's paperwork happens: application, possibly an appraisal (frequently covered by the new lender as a switching incentive), and instructions to your lawyer or a title service. Six to eight weeks is comfortable; three weeks is stressful; one week is usually not enough.

Renewal Day: Nothing Happens

If you've done the above, renewal day is an anticlimax. The new term starts, the payment adjusts, and you've saved yourself thousands of dollars with a few phone calls. That's the goal: boring.

What Happens If You Do Nothing

It's worth knowing the default. If you genuinely ignore every letter, most lenders will roll you into an automatic renewal — typically a six-month term at their posted rate, which can run one to two full percentage points above market. On a $400,000 balance, six months at posted instead of a shopped rate can cost you $2,000–$4,000 in extra interest. It's the most expensive snooze button in your financial life.

The Numbers: What Starting Early Is Worth

Say you're renewing $400,000 with 20 years of amortization left. Your bank's renewal letter offers 4.69%. A broker finds 4.19% — a half-point difference, which is entirely typical of the gap between a first offer and a shopped rate in mid-2026.

• At 4.69%: monthly payment about $2,566
• At 4.19%: monthly payment about $2,459

That's roughly $107 a month, or about $6,400 over a five-year term — and slightly more of each payment goes to principal at the lower rate, so the gap in your ending balance widens further. Run your own numbers in the mortgage calculator; the difference between "signed the letter" and "shopped for five months" is rarely small.

Special Situations That Change the Timeline

Renewing off a pandemic-era rate. If you locked a fixed rate below 2.5% in 2020–2021 and you're renewing now, you're facing a meaningful payment increase no matter what you do. Starting six months early won't make the increase disappear, but it lets you plan for it: model the new payment, use prepayment room before renewal to shrink the balance, and consider whether resetting your amortization makes sense for cash flow.

Planning to sell within the next term. Prioritize a shorter term or a variable product — breaking a variable costs three months' interest, while breaking a five-year fixed can trigger a much larger IRD penalty. Our prepayment penalty guide shows the math.

Finances have gotten harder since your last term. If money is tight, start even earlier and read our guide on renewing during financial hardship — you have more options before you miss a payment than after.

The Bottom Line

The 120-day rule is really a six-month project with a 120-day milestone in the middle: inventory at six months, quotes at five, rate holds at four, negotiation at three, execution at two, boredom on renewal day.

None of the steps is difficult. All of them together take maybe three or four hours spread over half a year. Against that effort stands the loyalty tax — the 0.30–0.75% premium lenders collect from everyone who signs the first letter.

Find your maturity date today, count back six months, and put it in your calendar. Future-you, checking the mortgage calculator with a rate that has an extra discount in it, will be glad you did.