Credit Score & Mortgage Approval in Ontario: What You Need to Know Before Applying 

Introduction: Why Your Credit Score Matters More Than You Think  

If you’re planning to buy a home or refinance in Ontario, your credit score can make or break your mortgage approval. Many buyers focus only on interest rates, but lenders look at your credit score first to decide if you qualify, which lender you qualify with, and how much interest you’ll pay.

The good news?
You don’t need a perfect credit score to get approved. You just need the right strategy and the right mortgage agent.

This guide explains everything Ontario home buyers need to know about credit score and mortgage approval in 2025.

What Is a Credit Score in Canada?  

A credit score is a three-digit number that reflects how responsibly you manage debt. In Canada, credit scores typically range from 300 to 900.

Credit Score Ranges Explained  

• 760 – 900 → Excellent

• 725 – 759 → Very Good

• 660 – 724 → Good

• 600 – 659 → Fair

• Below 600 → Poor

Lenders in Ontario mainly use data from Equifax Canada and TransUnion Canada.

Minimum Credit Score for Mortgage Approval in Ontario  

This is the most common question I get as a mortgage agent.

Credit Score Requirements by Lender Type  

A Lenders (Banks & Prime Lenders)  

• Minimum credit score: 680

• Best interest rates

• Strict income and debt verification

• Stress test applies

B Lenders (Alternative Lenders)  

• Minimum credit score: 600

• Higher interest rates

• Flexible income rules

• Ideal for self-employed borrowers

Private Lenders  

• Credit score: Less important

• Focus on property equity

• Short-term solution

• Higher interest and fees

💡 Many Ontario buyers are declined by banks but approved easily through alternative lenders with a solid plan.

How Credit Score Affects Your Mortgage Interest Rate  

Your credit score doesn’t just decide approval — it directly impacts your monthly payment.

Example:  

• Credit score 750+ → Lower interest rate

• Credit score 650–679 → Higher interest rate

• Credit score below 620 → Limited lender options

Over a 25-year mortgage, even a 0.50% difference can cost or save tens of thousands of dollars.

What Lenders Look at Beyond Credit Score  

A strong credit score helps, but lenders in Ontario assess your entire financial profile:

• Payment history (most important factor)

• Credit utilization ratio

• Length of credit history

• Types of credit (credit cards, loans, LOC)

• Recent credit inquiries

• Debt-to-income ratios (GDS/TDS)

• Employment stability

• Down payment source

Common Credit Mistakes That Hurt Mortgage Approval  

Avoid these mistakes at least 6–12 months before applying:

• Missing or late payments

• Maxing out credit cards

• Closing old credit accounts

• Applying for multiple loans

• Ignoring collection accounts

• Cosigning loans without planning

How to Improve Your Credit Score Before Applying for a Mortgage  

If your credit score isn’t ideal, don’t worry. Here are proven steps that work for Ontario borrowers:

Practical Credit Improvement Tips  

• Pay all bills on time (even minimum payments)

• Keep credit utilization below 30%

• Do not close old credit cards

• Limit new credit applications

• Pay down high-interest debt first

• Check credit reports for errors

• Use a secured credit card if needed

⏳ Most borrowers see improvement within 3–6 months with proper guidance.

First-Time Home Buyers: Credit Score Tips in Ontario  

If you’re a first-time buyer:

• Aim for 680+ credit score

• Keep your finances stable before application

• Avoid job changes during approval

• Save proof of rent payments

• Use government incentives wisely

👉 You may also qualify for:

• First-Time Home Buyer Incentive

• Land Transfer Tax Rebates

• RRSP Home Buyers’ Plan

Self-Employed Borrowers & Credit Score Challenges  

Self-employed clients often face:

• Lower reported income

• Business write-offs

• Inconsistent cash flow

Good credit can offset income challenges, especially with:

• Stated-income programs

• B-lender solutions

• Strong down payment

FAQs: Credit Score & Mortgage Approval in Ontario  

Q: Can I get a mortgage with a 620 credit score?
Yes, with alternative lenders or private options.

Q: Do joint applications use both credit scores?
Yes. Lenders typically consider the lower score.

Q: Does checking my credit score hurt it?
No. Soft checks do not impact your score.

Q: Should I pay off all debt before applying?
Not always. Strategy matters more than zero debt.

Why Work With an Ontario Mortgage Agent?  

Unlike banks, a mortgage agent:

• Accesses 40+ lenders

• Matches you with the right lender for your credit

• Builds a credit-improvement roadmap

• Saves time, money, and stress

A decline from a bank does not mean a decline overall.

Final Thoughts: Your Credit Score Is Not the End of the Story  

Your credit score is important — but it’s not the final decision maker. With proper planning, even borrowers with average or bruised credit can successfully buy or refinance a home in Ontario.