Buying a home in Canada often starts with one practical question: how much can you actually afford? A mortgage pre-approval gives you an estimate of the mortgage amount a lender may offer and helps you set a realistic price range before you start making offers.
It can also help you compare lenders and understand the financing you may qualify for, but it does not guarantee final mortgage approval.
What Is Mortgage Pre-Approval?
A mortgage pre-approval is an assessment of your finances by a lender or mortgage broker before you buy a property.
The lender reviews factors such as your income, assets, debts and credit history to estimate how much it may lend you and at what interest rate. You may also receive an interest-rate hold for a set period, generally between 60 and 130 days, depending on the lender.
The exact process varies between lenders. Some may call the service prequalification or preauthorization, and the level of assessment can differ.
Most importantly, pre-approval is not a final commitment to lend. The lender will still need to approve the specific property and verify your information before closing.
Why Get Pre-Approved Before Buying a Home?
Getting pre-approved can make the home-buying process easier in several ways.
Know your price range
The lender gives you an estimate of the maximum mortgage you could qualify for. This helps you avoid looking at homes that are clearly beyond your financing range.
Compare mortgage options
You can approach different lenders or brokers before choosing where to get your mortgage. Brokers may have access to multiple lenders, although the available products vary between brokers.
Lock in an interest rate
Depending on the lender, a pre-approval may hold an interest rate for a specific period. Ask how long the rate remains valid and what happens if market rates fall before you buy.
Strengthen your buying position
A pre-approval shows that you have already gone through an initial financing assessment. However, it should not be treated as proof that the lender will finance any property you choose.
How Does Mortgage Pre-Approval Work?
The process generally follows these steps:
1. Gather your financial information.
You provide information about your income, employment, debts, assets and down payment.
2. Submit your application.
You can apply directly with a lender or work with a mortgage broker.
3. The lender reviews your finances.
The lender assesses your ability to handle the mortgage alongside your existing financial obligations. A credit check will likely form part of the process.
4. You receive a pre-approval.
If you qualify, the lender may give you an estimated maximum mortgage amount and an interest-rate hold.
5. You shop within your budget.
Once you find a property, the lender conducts the final assessment. The property itself must meet the lender’s requirements before the mortgage becomes fully approved.
What Do You Need for Mortgage Pre-Approval?
Lenders will want enough information to assess your financial situation.
You may need to provide:
- government-issued identification;
- proof of employment and income;
- recent pay stubs;
- information about your debts;
- details about your assets;
- proof of your down payment;
- proof that you can cover closing costs;
- bank or investment statements;
- tax documents if you’re self-employed.
Self-employed applicants may need Notices of Assessment from the Canada Revenue Agency for the previous two years, depending on the lender’s requirements.
Having these documents ready can make the application process smoother.
How Do Lenders Decide If You Qualify?
Lenders look at your overall financial position rather than relying on one number.
Income
Your income helps determine how large a mortgage payment you can reasonably support. Lenders may verify your employment, salary and length of employment.
Existing debt
Credit cards, car loans, student loans, lines of credit and other financial obligations can reduce the amount you qualify for because lenders consider their monthly payments when assessing affordability.
Credit history
Your credit history gives lenders information about how you have handled borrowing and payments in the past. A stronger credit history can improve your chances of mortgage approval.
For mortgages insured through CMHC, at least one borrower or guarantor generally needs a minimum credit score of 600, although CMHC may consider alternative ways to establish creditworthiness when a borrower has little or no credit history.
Down payment
Your available down payment affects both the amount you need to borrow and whether mortgage loan insurance applies.
For CMHC-insured homeowner mortgages, the minimum down payment generally starts at 5%. For homes above $500,000, the requirement is 5% on the first $500,000 and 10% on the portion above that, subject to the applicable rules.
What Are GDS and TDS Ratios?
Two important measures in Canada’s mortgage qualification process are Gross Debt Service (GDS) and Total Debt Service (TDS).
GDS looks at your housing costs compared with your gross household income. These costs can include:
- mortgage principal and interest;
- property taxes;
- heating expenses;
- applicable condo fees.
For CMHC-insured mortgages, the maximum GDS ratio is generally 39%.
TDS adds your other debt obligations to those housing costs. The maximum is generally 44% for CMHC-insured mortgages.
Lenders also apply Canada’s mortgage stress test when qualifying borrowers for insured mortgages. CMHC states that GDS and TDS calculations use the greater of the contractual mortgage rate plus 2 percentage points or 5.25%.
These are qualification limits, not necessarily a recommendation for how much you should borrow.
How Much Should You Borrow?
Your pre-approved amount is a maximum, not a target.
Canada’s Financial Consumer Agency recommends considering the other costs that come with owning a home, including closing costs, moving expenses and ongoing maintenance.
CMHC also warns that borrowing the maximum amount can leave you more exposed if your income falls, expenses rise or interest rates increase.
A safer approach is to look at the monthly payment you can comfortably handle rather than simply choosing the most expensive home your pre-approval allows.
What About Closing Costs?
Your down payment is not the only cash you need to buy a home.
CMHC estimates that buyers should generally budget 1.5% to 4% of the purchase price for closing costs. These can include legal fees, land transfer taxes where applicable, tax adjustments and other expenses.
For example, a buyer purchasing a $500,000 home could potentially need another $7,500 to $20,000 for closing costs, depending on the transaction and location.
That money is separate from the down payment, so make sure your pre-approval budget accounts for both.
How to Improve Your Chances of Getting Pre-Approved
Before applying, focus on the factors you can control.
Pay bills on time. A consistent payment history supports a stronger credit profile.
Reduce high-interest debt. Lower monthly debt payments can improve your borrowing capacity.
Avoid taking on new debt. A new car loan or large credit balance can change your financial profile before the lender makes its final decision.
Save beyond the down payment. Having money available for closing costs and other home-buying expenses makes your financial position stronger.
Check your credit report. If you find incorrect information, contact the credit-reporting agency and the organization responsible for the error.
Questions to Ask Your Lender
Before accepting a pre-approval, ask:
- How long is the rate hold?
- What happens if interest rates fall during the hold period?
- Can the rate hold be extended?
- What mortgage amount are you actually comfortable recommending?
- Are there penalties for breaking the mortgage early?
- What fees apply to the mortgage?
- What conditions must you meet before final approval?
These questions can reveal differences between offers that are not obvious from the interest rate alone.
What Should You Do After Getting Pre-Approved?
Once you have your pre-approval, use it as a budgeting tool, not a spending target.
Set a home price that leaves room for property taxes, insurance, utilities, maintenance and other household expenses. Then compare homes within that range.
When you make an offer, keep in mind that the lender still needs to approve the specific property. Continue to provide accurate financial information and avoid major changes to your finances until the mortgage closes.
Final Thoughts
A mortgage pre-approval can give you a clearer idea of what you can afford before you start shopping for a home in Canada. It also gives you an opportunity to compare lenders and understand the financing available to you.
The most useful pre-approval is not necessarily the one that offers the largest mortgage. Choose a budget that leaves enough room for the other costs of homeownership and for changes in your financial situation.
Frequently Asked Questions
Does getting pre-approved hurt your credit score?
A lender will likely perform a credit check as part of the process, but the impact depends on how the credit inquiry is recorded and the lender’s process. Ask the lender whether it will perform a hard credit inquiry before applying.
Can I get pre-approved with a low credit score?
It may still be possible, but your options can be more limited. Lenders use their own qualification criteria, and a lower credit score can affect the interest rate, required down payment or whether you qualify at all. For CMHC-insured mortgages, at least one borrower or guarantor generally needs a credit score of 600.
Can I change lenders after getting pre-approved?
Yes. A pre-approval does not require you to complete your mortgage with that lender. Comparing offers can help you find terms that better fit your situation.
How long does a mortgage pre-approval last?
The period varies by lender. An interest-rate hold may last between 60 and 130 days, according to the Financial Consumer Agency of Canada. Ask the lender exactly when the hold expires and whether an extension is possible.