Does Mortgage Pre-Approval Affect Your Credit Score?

Yes, but only slightly and temporarily. A formal mortgage pre-approval requires a hard credit inquiry, which can lower your score by a small amount for a short time.

Shopping around doesn't multiply that cost. The Financial Consumer Agency of Canada confirms that getting quotes from multiple lenders within a 2-week period counts as a single inquiry, not several.

KOHO Credit Builder

KOHO Credit Builder is designed to help Canadians establish or build their credit history through consistent monthly payments, without relying on a traditional credit card.

With KOHO Credit Builder, you can:

• +74 points average credit score increase seen using our credit building tools*
• Get approved without a hard credit check or minimum deposit
• Pay no interest on the line of credit
• Track your credit score and credit report directly in the KOHO app
• Build your credit history with monthly payments reported to the credit bureaus

Why Pre-Approval Triggers a Hard Inquiry

A hard inquiry happens whenever a lender checks your credit report to decide whether to approve you. Mortgage applications fall into this category, along with credit card and loan applications.

A hard inquiry appears on your credit report and affects your score. That's different from a soft inquiry, like checking your own credit report, which only you can see and has no effect on your score.

Why Rate Shopping Doesn't Add Up the Damage

Credit bureaus expect you to compare lenders before committing to a mortgage.

To account for that, they group multiple mortgage inquiries made within a short window and count them as one. The Financial Consumer Agency of Canada specifically names a 2-week period for mortgage and car loan shopping.

That means getting pre-approved by three different lenders in the same two weeks typically costs you the same single hit as applying to just one.

Pre-Qualification vs. Pre-Approval

These two terms get used interchangeably, but they're not the same, and only one of them reliably affects your score.

Pre-qualification is usually a quick, informal estimate based on information you provide yourself. Many lenders skip the credit check entirely at this stage, or use only a soft check.

Pre-approval is more formal. The lender verifies your information and typically pulls your full credit report, which is the step that triggers the hard inquiry.

What Happens to Your Score Afterward

The dip from a single hard inquiry is usually small. It's also temporary: scores typically recover within a few months as long as you keep paying your other bills on time.

The pre-approval inquiry itself is separate from what happens once you actually close on the mortgage. Opening the mortgage account at that point is a new credit event, and it can affect your score differently (for example, by adding a large installment loan to your file), regardless of what the pre-approval inquiry already did.

Before You Apply for Pre-Approval

A couple of habits make the process safer for your score:

• Do your rate shopping in one window. Get quotes from multiple lenders within the same couple of weeks so they're grouped as one inquiry.
• Check your own score first. This only ever counts as a soft inquiry, so there's no cost to looking before you apply. See the minimum credit score for a Canadian mortgage to know where you stand before you shop.

*Based on users with a starting score of 450 or under and who used all of our credit building tools (i.e. Credit Building, Secured Credit Building) for 12+ months with on time payments. Credit building tools we offer are not a credit repair tool and does not guarantee an improvement in credit score. Credit scores are based on complex models involving a variety of factors. Consistent on-time payments help improve scores and missed or late payments may cause credit scores to decrease. Outcomes may vary among users.