From 3.60% to 3.69%: What Ontario Buyers Should Do Before Locking a Rate

The five-year rate I track for clients came in at 3.69% in September 2026, up from the 3.40% to 3.60% range I had been quoting. That gap looks small, but at these levels every basis point now shows up in your qualifying amount. Here is what to do this week if you are buying or refinancing in Ontario.

1. Recalculate your qualifying rate at 3.69%, not the old number. The stress test uses your contract rate plus 2 percentage points or 5.25%, whichever is higher. At 3.40% you qualified at 5.40%. At 3.69% you qualify at 5.69%. Because the 5.25% floor no longer applies at these rates, any increase in your contract rate raises your qualifying rate by the same amount. If your budget was built on a summer pre-approval, rebuild it.
2. Ask your lender to reissue your pre-approval in writing with the current hold rate and expiry date. Get the hold rate, the date it ends, and confirmation that the qualifying math was redone. A pre-approval built on the old range can overstate your ceiling, and you do not want to learn that after an offer is firm.
3. Line up your hold expiry against your realistic closing date. If you are still searching, count backward from a plausible closing. If the hold runs out before closing, you are exposed to whatever rates do in between. Ask now whether the lender will extend it, and on what terms.
4. Ask, in writing, what happens if rates fall before you close. Some lenders pass a lower rate through to you and some do not. Get the policy on paper so you know whether locking protects you in only one direction.
5. Watch the 5-year Government of Canada bond yield, not the headlines. Five-year fixed mortgages are priced off that yield. When it climbs, lender rate sheets usually follow. Checking it a couple of times a week tells you more about where your rate is heading than any news story.
6. If you are self-employed, pull your Notices of Assessment and full T1 Generals now. Your qualifying income is what the lender can document, and a higher qualifying rate means you have less room for error on paper. Confirm that no balance is owing to the CRA and that your reported income supports the purchase price at 5.69%. If your add-backs or business income need explaining, write that explanation before the lender asks for it.
7. Investors refinancing: run the stress test before you count on the equity. Refinances are qualified at 5.25% or the contract rate plus 2%, whichever is higher. At 3.69% that means 5.69%. If you planned to pull equity for a down payment on your next property, check that the new payment still qualifies alongside your rental income.
8. Agents: rewrite your buyers' financing math before the next offer. If you are writing conditional offers in Vaughan or anywhere in the GTA, make sure your buyer's maximum price reflects the 3.69% figure. TRREB's September report described GTA buyers staying on the sidelines because of economic uncertainty. Sellers who do get a firm offer will hold onto it, so a buyer who overreached on old numbers has little room to renegotiate. Before you set the length of the financing condition, ask the buyer's mortgage agent to confirm the qualifying number.
9. Build your offer budget at a rate slightly above 3.69%. Run your numbers at a small cushion above today's rate as well as at today's rate. If the deal still works at the higher figure, a small move before you lock will not break it.

The item people skip most often is number 2. A pre-approval feels finished once you have it. But a document built on a 3.40% to 3.60% assumption may no longer reflect what you qualify for at 3.69%, and you only find out when an offer depends on it.