Education 8 min read

    Credit 101: Understanding Your Credit Score & How It Affects Your Mortgage

    All borrowers should be familiar with credit 101. Understanding how your credit functions and why it's an important factor which licensed mortgage brokers and lenders assess is an essential step to securing a great mortgage.

    Kyle Benzies

    Licensed Mortgage Broker

    Person reviewing credit score report and financial charts

    All borrowers should be familiar with 'credit 101'. Understanding how your credit functions and why it's an important factor which licensed mortgage brokers and lenders assess is an essential step to securing a fantastic mortgage. Credit 101 involves both your credit score, credit report, and any relevant information regarding your credit.

    Credit 101 Overview

    Your credit score, including your credit report, are significant factors in determining whether you're a suitable borrower to lend to. Mortgages are a significant investment and lending risk — lenders must ensure they follow guidelines and protocols to protect not only themselves, but borrowers as well.

    How Is My Credit Score Calculated?

    There are two credit bureaus which exist in Canada: Equifax and TransUnion. These credit bureaus are responsible for using formulas to compile your credit score based off your financial history and any relevant data.

    There are two main complex algorithms these credit bureaus may use when calculating your score:

    FICO (Fair Isaac & Company) score — the first broad-based consumer rating in the lending industry and the most widely used algorithm
    Beacon (Pinnacle) score — an offshoot of the FICO scoring method, also very common

    What Do Credit Algorithms Base Their Scoring Off Of?

    Algorithms are responsible for the behind-the-scenes work of analyzing a credit score, but there are still some easy-to-understand factors you should be aware of.

    Here are the 5 main factors that contribute to the calculation of your credit score:

    Payment History (35%) — Whether it be for a credit card or a mortgage, when you borrow money, you are expected to make payments on time. Any time you don't pay the minimum payment on time for your loan, it negatively affects your credit score. This factor has the heaviest weight on your credit score calculation because it is a direct display of your likelihood to fall behind on bills, or even default on your loan.
    How Much Is Owed (30%) — Your outstanding debt is important because it shows the lender how much debt you carry in comparison to your credit limit. Lenders may assess your current debt ratio (total debt / total assets) to determine your spending habits and likelihood of repaying your loan on time.
    Timeline of Credit History (15%) — How long have you been growing or maintaining your credit? This process generally begins for most people with being approved for their first credit card. If you don't have a lengthy credit history, it may make you appear less reliable in comparison to someone who has years of experience with credit.
    Credit Applications (10%) — The type and number of credit applications you've applied for can both affect your credit score. Diversifying the type of credit you maintain has been shown to have a positive impact on your score. Some ways to diversify include having revolving credit (such as a credit card, personal line of credit, etc.) and/or an installment loan (such as a mortgage, car loan, etc.).
    Inquiries (10%) — If your credit score isn't optimal, making extra inquiries into where it stands may negatively impact you. This especially rings true if you've conducted inquiries within a short period of time because it has the potential to look like you're trying to 'shop around' for the best rating.

    Credit Score Ranges: How Does Yours Compare?

    You may already know your credit score — maybe it's 358, or 612, or even 880! But what do these numbers mean?

    Your score is determined to be within a range of 300 to 900 with Equifax, or 300 to 850 with TransUnion. Most credit models follow the same rating scale, with a small variance in range for each category.

    800–850: Excellent — Considered a low-risk borrower. You'll qualify for the most competitive rates and terms.
    740–799: Very Good — Considered a low to mid-risk borrower. Strong position for mortgage approval.
    670–739: Good — May or may not be approved for a loan depending on the circumstances and application.
    580–669: Fair — The minimum requirement for most prime lenders is a score of 650 for purchases, or 680 to refinance (some exceptions may apply). If you're within this category, you bear a higher risk for being denied a loan.
    300–579: Poor — For an individual with a credit score between 500–550, alternative (B Lending) or private lending may be an option.

    The average credit carrier has a score designated somewhere between 650–725. If you've found yourself within this category, or even better in the Excellent category, great job! If not, there are avenues you can take to increase your score and borrowing power.

    How To Improve Your Credit Score

    As discussed above, it's important to pay attention to what the lenders are assessing regarding your credit. Here are some practical steps you can take:

    Always make at least the minimum payment on time — set up automatic payments if possible
    Keep your credit card balances below 30% of your available limit
    Don't close old credit accounts — the length of your credit history matters
    Limit the number of new credit applications you submit
    Regularly check your credit report for errors and dispute any inaccuracies
    Diversify your credit mix with both revolving credit and installment loans

    Reach out to a licensed mortgage professional for a chat about your credit — a knowledgeable broker can assist you with mortgage solutions so that your credit report positions you well with lenders.

    For a no-obligation chat to discuss your credit and mortgage options, give us a call! The information provided on this page is for educational purposes and should not be implicitly relied upon. Conditions may apply and information may not be 100% up to date. Contact a licensed mortgage professional for the most current conditions and program offerings.

    Have questions about credit 101: understanding your credit score & how it affects your mortgage?

    Call for a free, no-obligation consultation, or run the numbers first with the mortgage calculators.

    (604) 780-5173

    About the author

    Kyle Benzies, Licensed Mortgage Broker

    I'm a licensed mortgage broker serving clients across British Columbia, Alberta, and Ontario. I work with a network of over 100 lenders — banks, credit unions, monoline, and alternative lenders — to find financing that fits each client's situation rather than a single institution's product shelf. Everything I publish here is written to explain how Canadian mortgage lending actually works, in plain language.

    Published December 16, 2025

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