A Lower Contract Rate Won't Drop Your Qualifying Rate Below 5.25%

Take two borrowers in Ontario this fall, one whose contract rate sits just under 3.25% and the other whose rate is exactly 3.25%. (Both rates are illustrative.) They will be stress-tested at exactly the same rate, and on the same income they qualify for exactly the same maximum mortgage. The cheaper offer saves the first borrower money every month, but it doesn't buy a single extra dollar of approval.

That surprises a lot of people shopping for a home or a refinance. The common assumption is that every rate drop stretches your budget. Under the rule lenders use for uninsured mortgages, that holds only down to a certain point. Below it, your borrowing power stops responding to rate. If you're trying to get approved for more, you need to know where that point sits and what moves your number once you're past it.

The qualifying rate has a floor, and it sits at 5.25%

As of January 2026, OSFI's minimum qualifying rate for uninsured mortgages is your contract rate plus 2 percentage points, or 5.25%, whichever is higher. You'll sometimes see the buffer written as 200 basis points. That is the same figure, since 200 basis points equals 2 percentage points. The rule hasn't moved. If a write-up phrased it one way and a lender phrases it the other, you're looking at the same test.

The words "whichever is higher" do all the work. Here is how the arithmetic plays out on a few example contract rates:

• 4.50% contract rate: 4.50% + 2 = 6.50%, so you qualify at 6.50%
• 3.75% contract rate: 3.75% + 2 = 5.75%, so you qualify at 5.75%
• 3.25% contract rate: 3.25% + 2 = 5.25%, so you qualify at 5.25%
• 3.20% contract rate: 3.20% + 2 = 5.20%, which is below the floor, so you qualify at 5.25%

Any contract rate under 3.25% puts you on the floor. From there down, negotiating another tenth of a point lowers what you pay without lowering the rate the lender uses to decide whether you can afford the loan.

Keep the rate you pay separate from the rate you qualify at

There are two numbers in every uninsured file. The contract rate sets your actual payment. The qualifying rate decides how much the lender will approve, because it is used to test your payments against your income.

Above 3.25%, the two move together, so a better rate improves both your payment and your approval. At or below 3.25%, they come apart. Your payment keeps falling with the rate while your approval stays fixed at whatever 5.25% allows on your income and debts.

That changes how you should judge a lender's offer. If your approval is tight and your rate is already near the floor, a lender shaving a little more off the rate is giving you a cost saving. Weigh it against prepayment terms, penalties and flexibility. Don't expect it to fix a shortfall in how much you can borrow.

Below the floor, income and debts move your approval

Once the rate is pinned at 5.25%, three things are left to change the result: the income the lender accepts, the debts it counts against you, and the size of your down payment.

For self-employed borrowers, the income piece usually matters most and gets the least attention. The figure on your tax return after write-offs can be much lower than what the business actually supports. Before you shop rates, take your recent returns and Notices of Assessment to a lender or broker and ask how your income will be calculated. Ask too whether add-backs or a different lending program could recognize more of it. Paying down a car loan or a credit card balance before you apply can also free up room that no rate cut would.

If you're buying with a real estate agent, it helps them to know which lever matters in your file, because a pre-approval built on the wrong assumption tends to come apart once you're conditional on financing.

Before you call another lender about rate, check whether your contract rate is above or below 3.25%. If it's below, put the effort into your income paperwork and your debts, because the rate no longer controls how much you can borrow.