How to improve your credit score for a mortgage in Canada
What credit score you need, what is hurting your score right now, and 8 proven strategies to go from 620 to 720+ before you apply.
Your credit score is one of the most important factors in your mortgage application. It determines whether you qualify at all, which lenders will work with you, and most importantly what interest rate you will pay. The difference between a 650 and a 750 credit score on a $600,000 mortgage can mean paying $50,000 more in interest over 25 years. This guide covers exactly what score you need, what is hurting your score right now, and the fastest proven strategies to improve it before you apply.
What credit score do you need for a mortgage in Canada?
Canadian lenders use a credit score range of 300 to 900. Here is how lenders view different score ranges for mortgage applications:
| Score Range | Rating | Mortgage Options |
|---|---|---|
| 800–900 | Exceptional | Best rates from all lenders |
| 720–799 | Very Good | Best rates, all lenders |
| 680–719 | Good | Good rates, all major banks |
| 650–679 | Fair | Most lenders, slightly higher rates |
| 620–649 | Below Average | Limited lenders, higher rates |
| 580–619 | Poor | Alternative lenders only, much higher rates |
| Below 580 | Very Poor | Private lenders only, very high rates |
The magic number for Canadian mortgages is 680. Above 680 you access the full range of lenders and best rates. Below 680 your options narrow significantly and your rate increases.
For CMHC insured mortgages (less than 20% down) the minimum score is 600 at most lenders. However a score of 600 is the absolute floor — you want to be well above this for the best outcome.
How Canadian credit scores are calculated
Understanding what goes into your score is the first step to improving it. Canadian credit bureaus (Equifax and TransUnion) calculate your score based on five factors:
Payment history (35% of your score)
The single biggest factor. Every on-time payment helps. Every missed or late payment hurts — and stays on your report for 6 years. Even one missed payment can drop your score by 50–100 points.
Credit utilization (30% of your score)
How much of your available credit you are using. If you have a $10,000 credit card limit and carry a $7,000 balance, your utilization is 70% — which severely hurts your score. Keeping utilization below 30% is good. Below 10% is ideal.
Length of credit history (15% of your score)
The longer your accounts have been open, the better. This is why you should never close your oldest credit card — even if you do not use it. The age of your oldest account and the average age of all accounts both matter.
Credit mix (10% of your score)
Having a mix of credit types (credit card, car loan, line of credit) shows you can manage different types of debt responsibly. You do not need to take on unnecessary debt to improve this — but it is worth knowing.
New credit inquiries (10% of your score)
Every time a lender pulls your credit for a new application, it creates a hard inquiry that temporarily reduces your score by 2–10 points. Multiple inquiries in a short period (outside of mortgage rate shopping) signal financial stress to lenders.
What is hurting your credit score right now
Before improving your score, check your credit report for these common issues:
- Missed or late payments: Even payments that were only a few days late can be reported. Check every account on your report.
- High credit card balances: If any card is above 50% of its limit, it is dragging your score down significantly.
- Collections accounts: Unpaid bills sent to collections (phone bills, utilities, parking tickets in some cases) appear on your report and severely damage your score.
- Errors on your report: Studies show that a significant percentage of Canadian credit reports contain errors. Wrong account information, accounts that are not yours, or incorrect payment history can all be hurting your score unfairly.
- Too many recent applications: If you have applied for multiple credit products recently the inquiries add up.
How to check your credit score in Canada for free
You are entitled to a free credit report from both major Canadian bureaus:
- Equifax Canada: equifax.ca — free report by mail, paid for instant online access
- TransUnion Canada: transunion.ca — free report available, paid for score monitoring
Free score monitoring services:
- Borrowell — free Equifax score updates weekly
- Credit Karma Canada — free TransUnion score
- Many Canadian banks now show your credit score in their mobile app for free
Check both bureaus — lenders check both and they can differ significantly. Errors on one bureau do not automatically appear on the other.
8 proven strategies to improve your credit score before applying for a mortgage
Strategy 1 — Pay every bill on time, starting today
Payment history is 35% of your score. Set up automatic minimum payments on every account immediately so you never miss a payment again. Even if you cannot pay the full balance, always pay at least the minimum on time. One missed payment can undo months of progress.
Strategy 2 — Pay down credit card balances aggressively
This is the fastest way to improve your score. Reducing your credit card utilization from 70% to 30% can increase your score by 50–100 points within 1–2 billing cycles. Focus on the card with the highest utilization first.
Target: Get every card below 30% utilization. Ideal: Get every card below 10% utilization before applying for your mortgage.
Strategy 3 — Do not close old credit cards
Closing a credit card reduces your available credit (increasing utilization) and may shorten your credit history. Both hurt your score. Even if you have a card you never use, keep it open and make a small purchase once every few months to keep it active.
Strategy 4 — Dispute errors on your report
Get your free reports from Equifax and TransUnion and review every account carefully. If you find errors — wrong balances, accounts that are not yours, late payments that were actually on time — dispute them in writing. Bureaus are required to investigate and correct verified errors. Removing one erroneous collection account can improve your score by 50–150 points.
Strategy 5 — Become an authorized user on a family member's account
If a parent or family member has a credit card with a long history and low utilization, ask them to add you as an authorized user. Their positive account history appears on your credit report and can significantly boost your score. You do not need to use the card — just being listed helps.
Strategy 6 — Request a credit limit increase
Increasing your credit limit without increasing your spending immediately reduces your utilization ratio. Call your credit card company and request a limit increase — most will grant modest increases if you have had the card for a year or more and have a decent payment history. Note: this triggers a hard inquiry so do not do this in the 6 months before applying for your mortgage.
Strategy 7 — Pay collections accounts
If you have accounts in collections, paying them off removes the active collection status. Note that the collection account still appears on your report for 6 years from the original delinquency date — but a paid collection is viewed much more favorably than an unpaid one. Some lenders will not approve a mortgage with any unpaid collections regardless of your score.
Strategy 8 — Stop applying for new credit
Every hard inquiry drops your score slightly and signals financial stress. In the 12 months before applying for a mortgage, avoid applying for new credit cards, car loans, lines of credit, or any other credit products. The only exception is mortgage rate shopping which is treated as a single inquiry if done within a short window.
Realistic timeline for credit improvement
| Timeframe | What you can achieve |
|---|---|
| 1–2 months | Pay down credit cards below 30% → score increase of 30–80 points |
| 3–6 months | Dispute and resolve errors → score increase of 20–150 points depending on errors |
| 6–12 months | Consistent on-time payments + low utilization → score increase of 50–100 points |
| 12–24 months | Collections age off, inquiries fade → score increase of 30–80 points |
Most borrowers can go from a 620 score to a 680+ score in 6–12 months with consistent effort. Going from 680 to 720+ typically takes 12–18 months of excellent habits.
Credit score vs mortgage rate — the real cost difference
| Credit Score | Typical Rate | Monthly Payment on $600K | Total Interest (25yr) |
|---|---|---|---|
| 750+ | 5.25% | $3,590 | $477,000 |
| 720–749 | 5.45% | $3,660 | $498,000 |
| 680–719 | 5.65% | $3,730 | $519,000 |
| 650–679 | 6.15% | $3,920 | $576,000 |
| 620–649 | 6.95% | $4,195 | $658,500 |
The difference between a 620 and a 750 score on a $600,000 mortgage is approximately $181,500 in total interest over 25 years and $605 more per month. This is why improving your credit score before applying is one of the highest-return financial moves you can make. Once your score is ready, double-check your numbers with our mortgage affordability guide and review the stress test rules before applying.
Use Smart Mortgage Calculator to plan your purchase
Once your credit score is where you want it, paste any Realtor.ca, Zolo, or MLS listing URL into Smart Mortgage Calculator to see your exact monthly payment, stress test result, and full cost breakdown before you apply.
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Try the AnalyzerFrequently asked questions
How long does it take to build credit from scratch in Canada?
Building a credit score from zero typically takes 6–12 months. Start with a secured credit card or a credit-builder loan, use it for small purchases, and pay the full balance every month. After 6 months you will have a score. After 12 months of perfect payment history your score should be in the 650–700 range.
Does checking my own credit score hurt my score?
No. Checking your own credit score is a soft inquiry and does not affect your score at all. Only hard inquiries from lenders when you apply for credit affect your score.
Which credit bureau do Canadian mortgage lenders use?
Most Canadian mortgage lenders check both Equifax and TransUnion. Some lenders use one or the other depending on their internal systems. It is important to monitor both and ensure both are accurate.
Can I get a mortgage in Canada with no credit history?
It is very difficult. Most lenders require at least 2 years of Canadian credit history for a standard mortgage. If you are new to Canada, some lenders have newcomer mortgage programs that consider international credit history or use alternative qualification methods.
How much will my score drop when I apply for a mortgage?
A single mortgage application typically drops your score by 2–10 points from the hard inquiry. Multiple mortgage inquiries within a 14–45 day window are usually treated as one inquiry. Your score typically recovers within 3–6 months.
Credit scoring models and lender requirements change. This article reflects standard Canadian practices as of May 2025. Always check your credit report from both Equifax and TransUnion before applying for a mortgage.