Last updated: June 17, 2026
When you apply for a home loan in Canada, your credit score is the very first thing lenders look at. It determines not only if you get approved, but also the interest rate you will pay for years to come.
Table of Contents
- Understanding Canadian Credit Scores
- Minimum Credit Score Requirements by Lender Type
- How Your Credit Score Impacts Your Mortgage Rate
- How Your Credit Score is Calculated
- Steps to Improve Your Credit Score for a Mortgage
- Our Take: The CMS Perspective on Credit and Homeownership
- Frequently Asked Questions
Key Takeaways
- Securing the best rates from traditional prime lenders generally requires a credit score of 680 or higher.
- High-ratio default insurance is available for homes under $1,500,000, with a minimum credit score of 600 required by CMHC, Sagen, and Canada Guaranty.
- Alternative “B” lenders can work with scores down to 550, while private lenders focus on home equity rather than credit scores.
- Simple daily habits, like keeping your credit utilization under 30% and paying bills on time, can raise your score in a matter of months.
Understanding Canadian Credit Scores
In Canada, credit scores range from 300 to 900. Two main credit bureaus, Equifax and TransUnion, track your credit history and calculate this score. They update your profile monthly based on your payment habits, outstanding debts, and how long you have used credit.
Lenders use this three-digit number to gauge how likely you are to pay back your loan on time. A high score tells lenders you are a low-risk borrower, which makes them compete for your business with lower rates. A lower score suggests higher risk, which means you will either pay a higher interest rate or need to look at alternative lending options.
Minimum Credit Score Requirements by Lender Type
Different lenders have different rules for what they consider an acceptable credit score. Traditional banks (known as “A” lenders) have the strictest standards, while alternative and private lenders offer more flexibility.
Should you have a down payment of less than 20%, you must get an insured mortgage. Under federal rules, the maximum home price eligible for high-ratio mortgage default insurance is $1,500,000. For these insured mortgages, Canada’s three default insurance providers (CMHC, Sagen, and Canada Guaranty) require at least one borrower to have a credit score of 600 or higher. However, prime banks will often still require a score of 660 or 680 to approve the application.
For a step-by-step plan on getting ready for an application, read our guide on how to improve your chances of getting a mortgage.
Here is a breakdown of how different lenders evaluate your credit score:
| Lender Category | Typical Credit Score Range | Down Payment Requirement | Pros and Cons |
|---|---|---|---|
| Prime “A” Lenders (Major Banks) | 680 to 900 (Best rates at 720+) | 5% minimum up to $500k, 10% up to $1.5M, 20% for $1.5M+ | Offers the lowest interest rates, but has very strict qualification criteria and requires passing the full stress test. |
| Alternative “B” Lenders (Trust Companies) | 550 to 679 | Minimum 20% down payment | More flexible with credit history and income verification, but rates are typically 1% to 2% higher than prime. |
| Private Lenders | No minimum score (Equity-based) | Minimum 20% to 35% down payment | Very fast approvals based on property value, but carries high interest rates and additional lender fees. Use as a short-term solution. |
How Your Credit Score Impacts Your Mortgage Rate
Your credit score directly affects the interest rate you are offered. Even a small difference in your rate can add up to tens of thousands of dollars over the life of your mortgage.
To illustrate, if you qualify for a prime rate on a $500,000 mortgage, your monthly payment will be significantly lower than if you have to use an alternative lender. A borrower with a 740 credit score might get a 4.25% fixed rate, while a borrower with a 580 score might be looking at 5.50% or higher with an alternative lender. Over a five-year term, that difference translates into thousands of dollars in extra interest payments.
Keep in mind that all borrowers at federally regulated lenders must pass the mortgage stress test. You must qualify at the greater of your contract rate plus 2.0%, or 5.25%. If your credit score forces you into a higher contract rate, your stress test qualifying rate also goes up, which reduces the total amount you can borrow.
Homeowners whose renewal is coming up soon and whose credit has taken a hit might want to learn how to handle your upcoming mortgage renewal before signing the bank’s offer. Remember, the stress test is not required for straight, stand-alone uninsured renewal switches between federally regulated lenders, which can give you more options if you need to switch lenders.
How Your Credit Score is Calculated
Understanding what actually goes into your score is the first step to improving it. Your credit score is not a mystery: it is based on five specific factors:
- Payment History (35%): This is the single most important factor. It tells lenders whether you pay your bills on time. Even one missed payment can cause your score to drop.
- Balances owing and credit utilization (30%): This is the amount of credit you are using compared to your total limit. For example, if you have a credit card with a $10,000 limit and carry a $3,000 balance, your utilization is 30%. Lenders like to see this ratio kept under 30%.
- Length of Credit History (15%): A longer credit history shows lenders you have experience managing debt. Keeping your oldest credit cards open, even if you do not use them often, helps this part of your score.
- New Credit Applications (10%): Every time a lender does a hard inquiry on your credit bureau, your score takes a temporary hit. Applying for multiple credit cards or car loans in a short period makes you look credit-needy and increases your risk profile.
- A mix of credit (10%): Having a mix of different credit types, such as a credit card, a car loan, and a line of credit, shows you can manage different types of debt responsibly.
Steps to Improve Your Credit Score for a Mortgage
Do not panic if your score is not where you want it to be. Your credit profile is a living document, and you can take active steps to improve it before you start house hunting.
First, pay every single bill on time. Set up automatic payments for at least the minimum balance so you never miss a due date. If you have any accounts in collections, pay them off immediately. An unpaid collection account is a major red flag for mortgage underwriters.
Second, pay down your balances to get your credit utilization under 30%. Do not max out your cards and then pay them off at the end of the month, because the credit bureaus might pull your data on a day when your balances are high. Keep those balances low throughout the month.
Third, do not close old, unused credit cards right before applying for a mortgage. Closing an old account shortens your credit history and reduces your total available credit, which can actually lower your score.
Finally, avoid applying for any new credit cards, personal loans, or car financing in the six months leading up to your mortgage application. Every hard inquiry can pull your score down just enough to push you into a higher rate tier.
Using your home equity to secure a loan can be an effective way to wipe out high-interest credit card debt that is dragging down your score.
Our Take: The CMS Perspective on Credit and Homeownership
Our team actually tells our clients this: do not let a less-than-perfect credit score stop you from exploring your options. Too many people wait years trying to fix their credit on their own while home prices continue to rise. Sometimes, it makes financial sense to get into the market now with an alternative lender, build home equity, and repair your credit while owning the home. We can help you build that bridge.
We recently worked with a client right here in Brampton who had a credit score of 590. They had missed a few payments on a car loan during a difficult job transition. The major banks turned them down immediately. Because we have active relationships with over 40 lenders, we were able to place them with an alternative “B” lender. They purchased a home for $750,000, putting down a 20% down payment. While their interest rate was slightly higher than prime, we set up a clear two-year plan. They made every mortgage payment on time, their credit score recovered to 710, and we successfully moved them back to a prime bank at renewal. That is the power of working with an experienced brokerage that looks at the big picture.
Frequently Asked Questions
What is the absolute minimum credit score needed for a mortgage in Canada?
Insured mortgages (less than 20% down) require a minimum score of 600 by CMHC and other insurers. For a conventional mortgage with 20% down or more, alternative lenders can approve borrowers with scores as low as 550. Private lenders do not have a minimum score requirement, as they focus entirely on the equity in the property.
How long does it take to rebuild my credit score for a mortgage?
You can see a noticeable improvement in your credit score within three to six months of consistent, positive habits. If you have major issues like a past bankruptcy or consumer proposal, it can take two to three years of clean credit history to qualify with a prime lender again.
Does checking my own credit score hurt my rating?
No. Checking your own credit score through services like Equifax, TransUnion, or credit-monitoring apps is considered a soft inquiry. It has absolutely zero impact on your score. Only hard inquiries, which happen when a lender checks your credit for a loan application, can affect your rating.
Can I get a mortgage if my partner has bad credit but mine is excellent?
If you need both incomes to qualify for the mortgage amount, lenders will look at both credit scores. For insured mortgages, at least one borrower must meet the minimum score, but prime lenders will still evaluate the risk of the lower-scoring partner. In some cases, it may be better to apply for the mortgage under only the name of the partner with excellent credit, if their income alone is high enough to qualify.
Will a 30-year amortization help me qualify if my credit is poor?
Opting for a 30-year amortization can lower your monthly payments, which helps your debt service ratios. Under federal rules, 30-year amortizations on insured mortgages are available to all first-time buyers and anyone buying a newly constructed home. However, if your credit is poor and you must use an alternative “B” lender, they already offer 30-year amortizations on conventional mortgages with 20% down, which can help make your payments more manageable.
Ready to Check Your Options?
Canadian Mortgage Services has been helping Ontario homeowners secure financing since 1988. Holding FSRA Brokerage License #10816, we have built relationships with over 40 lenders to find solutions that the big banks simply cannot offer. Whether you have pristine credit or are working to rebuild your score, we are here to help you take the next step.
Contact us today to discuss your situation. Give our team a call at 905-455-5005 or visit our Contact Us page to get started.
About the Author: Neil Drepaul in
Neil Drepaul is a Co-Owner and Mortgage Broker at Canadian Mortgage Services. With over 13 years of experience in the Canadian lending industry, Neil brings a strong entrepreneurial spirit to every client interaction. He specializes in helping homeowners and buyers find mortgage solutions that fit their real-life goals, not just their paperwork. His approach is straightforward: serve others first, and success follows.