How to Improve Your Credit Score Before Applying for a Mortgage

Your credit score is one of several things a lender looks at when you apply for a mortgage. A higher score typically opens up more lender options and can lower your rate, which adds up over the years you carry a mortgage. You can improve your score, and most of the steps are simple.

How Credit Scores Affect Your Mortgage

Canadian credit scores run from 300 to 900. Every lender sets its own minimum score and its own pricing, so there is no single cut-off. These are general patterns we see across the market:

Credit score	What it usually means
680 and up	Most programs and the widest choice of mainstream lenders are open to you
600 to 679	Many mainstream lenders will consider you, and default insurance is possible with at least one borrower at 600 or higher. Some lenders set their minimum a little higher, often in the 640 to 650 range
Below 600	Usually alternative (B) or private lenders, which tend to charge higher rates and fees

Lenders also look past the score at the full credit file: payment history, how many accounts you have and for how long, and recent late payments. Your rate depends on your down payment, the property, the term and your income as well. For insured mortgages (under 20% down), CMHC requires at least one borrower or guarantor to have a score of 600 or higher.

Here is what a small rate gap can cost. On a $500,000 mortgage amortized over 25 years, a rate that is 0.25% higher adds about $70 a month. Over a five-year term that is roughly $6,000 more in payments and balance owing at renewal. This is a hypothetical example only (4.5% compared with 4.75%, fixed, compounded semi-annually). It is not a quote, and your actual rate depends on your lender and your full application.

What Makes Up Your Credit Score

Equifax Canada publishes approximate weights for the main parts of a score. Each bureau and lender uses its own formula, so treat these as a guide.

Payment History (about 35%)

The Financial Consumer Agency of Canada (FCAC) calls this the most important part of your score. Even one late payment can lower it.

Action: Set up automatic minimum payments on every credit account, even the small ones.

Credit Utilization (about 30%)

This is how much of your available credit you are using. FCAC suggests using less than 30% of your total credit limit.

Action: If your card limit is $10,000, try to keep your balance below $3,000, and lower is better.

Credit History Length (about 15%)

A longer history helps, and closing an old account can hurt your score.

Action: Keep your oldest card open if it has no annual fee. A small recurring charge set to auto-pay keeps it active.

Credit Mix (about 10%)

Having different types of credit, such as a card, a line of credit and a car loan, shows you can manage more than one kind.

Action: Do not take on new credit just to improve your mix. It is the smallest factor, and a new account adds an inquiry.

New Credit Inquiries (about 10%)

Each application for credit can add a hard inquiry to your file. Several in a short period may worry a lender.

Action: Avoid applying for new credit in the 6 to 12 months before your mortgage application. If you are comparing mortgage lenders, do it within about two weeks. FCAC says the credit bureaus count mortgage inquiries within that window as one. Credit card applications are separate hard inquiries.

Quick Wins (30 to 90 Days)

1. Pay Down Credit Card Balances

Lowering your balances is one of the quicker ways to help your score. Your score may improve once your lenders report the lower balances, often within a month or two. Results vary. Lower balances also help your borrowing room: lenders usually count 3% of a card balance as a monthly payment when they work out what you can afford, so a $10,000 balance counts as $300 a month.

2. Consider Becoming an Authorized User

If a family member has a long-standing card with a good payment record and low balances, you can ask to be added as an authorized user. If the card issuer reports it to the bureaus, that history may help your score. It can also hurt you if the main cardholder misses a payment, and some lenders give it less weight.

3. Dispute Errors on Your Credit Report

Order your free credit report from both Equifax and TransUnion. Look for accounts you do not recognize, late payments that were on time, or debts that are already paid. Equifax says it processes online disputes in about 15 to 20 days and mailed disputes in about 20 to 25 days. Start two to three months before you apply so there is time to fix anything.

4. Set Up Automatic Payments

Make sure every credit account has at least the minimum payment automated.

Long-Term Strategies (6 to 12 Months)

Build a Thin File

If you are new to Canada or have a thin file, a secured credit card or credit builder loan can help. Open it as early as you can, because new accounts take time to age. Use it for small purchases and pay it in full each month.

Reduce Total Debt

Your debt load is not part of your credit score, but it affects how much you can borrow. Lenders look at two ratios. GDS is your housing costs divided by your gross income. TDS adds all your other debt payments. For insured mortgages, CMHC's limits are 39% for GDS and 44% for TDS.

Avoid Collections

Accounts sent to collections can seriously damage your score, and lenders treat them as a serious negative. If you have a dispute with a utility or service provider, try to resolve it before it reaches collections.

What Not to Do Before Applying for a Mortgage

Do not close credit cards (it reduces your available credit and raises your utilization).
Do not open new credit accounts (inquiries and a lower average account age).
Do not make large unusual purchases on credit.
Do not co-sign loans for others.
Do not change jobs without talking to us first. It is not a credit issue, but lenders look at employment stability.

Check Your Credit for Free

You can order your credit report for free from both bureaus, online or by mail, and the information is updated monthly:

Equifax Canada: equifax.ca
TransUnion Canada: transunion.ca

The two bureaus can show different scores, and a lender may check either one. Checking your own report is a soft inquiry and does not affect your score.

We Can Help

If your credit score is not where you want it to be, you may still have options. We work with many different lenders, including some that consider applicants who are rebuilding credit. Approval depends on each lender's criteria. Book a short call and we can talk through where you stand.

Check your mortgage eligibility

For more on how lenders assess an application, see What Lenders Look For and CMHC Insurance Explained.