How Mortgage Pre-Approval Works in Canada

This article is general information, not financial advice. Definitions and terms vary by lender; confirm the specifics of any pre-approval with the lender who issues it.

Before you shop for a home, most agents will tell you to "get pre-approved." It is good advice, but pre-approval is widely misunderstood, and the biggest misunderstanding, that it guarantees your mortgage, can cost you a home. Here is what pre-approval actually does, and does not do.

Pre-approval vs pre-qualification

You will hear both terms, and lenders use them loosely, so treat this as the common convention rather than a fixed rule:

• Pre-qualification is an informal estimate. You share some numbers, and a lender gives you a rough sense of what you might afford. Nothing is verified.
• Pre-approval is more substantial. The lender reviews your actual finances, income, assets, debts, and credit, to determine the maximum amount they may lend you and at what rate. It carries more weight because it is based on verified information.

Because different lenders define these terms differently (some say "pre-authorization" too), always ask what a specific lender's version actually involves.

What pre-approval gives you

Two useful things:

1. A budget you can trust. You learn the maximum a real lender may extend, so you shop in the right price range instead of guessing, and sellers take your offer more seriously.
2. A rate hold. A pre-approval typically holds a rate for a set period, commonly in the range of 60 to 130 days depending on the lender (90 and 120 days are common). If rates rise while you shop, the held rate may protect you. If rates fall, ask whether the lender will apply its lower rate, because they are not required to. That hold is still real protection while you look.

The stress test still applies

Pre-approval is where the mortgage stress test bites. Federally regulated lenders must qualify you not at your actual rate, but at a minimum qualifying rate: the greater of your contract rate plus 2%, or 5.25%. In other words, they check that you could still afford the mortgage if rates were meaningfully higher. This is why the amount you are pre-approved for is often lower than you expected: you are being qualified against a higher rate than you will actually pay. (One recent easing: for a qualifying uninsured "straight switch" between federally regulated lenders, changing lenders with no increase to your loan amount or remaining amortization, OSFI no longer requires this test, though the lender may still apply its own qualification.)

The part that matters most: pre-approval is not final approval

This is the misunderstanding that hurts people. A pre-approval is not a guarantee. A lender can still decline you even after pre-approving you, because final approval depends on things a pre-approval did not assess:

• The specific property. The lender will look at the actual home you are buying, including an appraisal. If the property does not meet their standards or appraises low, the deal can change or fall through.
• Updated documentation. They will re-verify your income, employment, and finances at the time of purchase. If your situation changed (a new loan, a job change, a big purchase on credit), the approval can change.
• Conditions. Pre-approvals come with conditions that must still be satisfied.

The practical lesson: after you are pre-approved and before you close, do not change your financial picture. Do not take on new debt, switch jobs, or make large credit purchases. Buyers routinely sabotage a solid pre-approval by financing a car or a furniture set the week before closing.

How to get pre-approved

Approach a lender or a broker (see broker vs bank) with your income documents, a sense of your debts, and consent to a credit check. They will assess you and, if you qualify, issue the pre-approval with its amount, rate, and hold period. It is also the natural moment to settle the fixed vs variable question, since the rate they hold depends on it.

Frequently asked questions

Is a mortgage pre-approval a guarantee? No. A lender can still decline you after pre-approval. Final approval depends on the specific property (including its appraisal), re-verified documents, and satisfying the conditions. Do not change your finances between pre-approval and closing.

How long does a pre-approval last? The rate hold typically runs somewhere in the range of 60 to 130 days depending on the lender, with 90 and 120 days common. After it expires, you would need to re-apply at current rates.

Why was I pre-approved for less than I expected? Because of the stress test. Lenders qualify you at a minimum qualifying rate (the greater of your contract rate plus 2% or 5.25%), not the rate you will actually pay, which lowers the maximum.

What is the difference between pre-qualification and pre-approval? Pre-qualification is an informal, unverified estimate; pre-approval is based on the lender reviewing your verified income, debts, and credit. Lenders use the terms loosely, so confirm what a given lender means.

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A pre-approval is a strong start, not a finish line. Habyn helps homeowners keep the documents a lender will ask for, and the mortgage that follows, organized in one place. See how Habyn helps homeowners.