Thinking about buying a new car while you're also planning to buy a home?

You may want to pause before signing that car loan or lease.

A new vehicle can feel like a completely separate purchase from your future home, but from a mortgage lender’s perspective, that new monthly payment becomes part of your overall debt obligations.

And depending on your income, existing debts and mortgage plans, it could reduce how much you qualify to borrow.

Why Can a Car Loan Affect Your Mortgage?

When you apply for a mortgage in Canada, lenders look at your overall financial picture—not just your income.

They consider factors such as:

• Your gross income

• Existing debts

• Monthly debt payments

• Credit history

• Housing expenses

• Down payment

• Mortgage amount

• Amortization

• Your ability to qualify under the applicable stress-test requirements

One of the important calculations lenders use is the Total Debt Service (TDS) ratio.

According to the Financial Consumer Agency of Canada, TDS includes your housing costs plus other debts, such as car loans, credit card payments, lines of credit and student loans.

That means your new vehicle payment doesn't disappear when you apply for a mortgage.

It becomes part of the calculation.

🚗 The $700 Car Payment Example

Let's say you're considering a vehicle that comes with a $700 monthly payment.

That sounds manageable on its own.

But $700 per month is:

$700 × 12 = $8,400 per year

That is a significant ongoing financial obligation.

When you're qualifying for a mortgage, the lender has to account for that payment alongside your other debts and housing costs.

The result?

Depending on your financial situation, the new car payment could reduce the mortgage amount you qualify for.

This doesn't mean a $700 car payment automatically reduces your mortgage by a specific dollar amount. The actual impact varies from borrower to borrower.

Your income, existing debts, interest rates, amortization and lender guidelines all matter.

🏠 What Is TDS?

TDS stands for Total Debt Service ratio.

It helps lenders assess how much of your gross income is going toward your housing costs and other debt obligations.

FCAC states that total debt load generally shouldn't exceed 44% of gross income, although qualification can vary depending on the lender and borrower profile.

Other debts can include:

🚗 Car loans
💳 Credit cards
💰 Lines of credit
🎓 Student loans
📋 Other financial obligations

So when you take on a new car payment, you're potentially using some of the debt capacity that could otherwise be available for your mortgage.

📊 Don't Forget the Mortgage Stress Test

There's another important part of mortgage qualification: the stress test.

For federally regulated lenders, the current minimum qualifying rate for uninsured mortgages is the greater of:

Your mortgage contract rate + 2%

or

5.25%

This means borrowers generally need to demonstrate that they can afford their mortgage at a higher qualifying rate than the actual contract rate.

Adding a new monthly debt obligation before applying for a mortgage can therefore make your overall qualification more challenging.

🚨 What About Leasing Instead of Financing?

Some buyers assume that leasing a vehicle won't affect their mortgage qualification because they aren't taking out a traditional car loan.

That's not a safe assumption.

A vehicle lease creates a monthly financial obligation, and lenders consider your financial commitments when assessing your mortgage application.

So whether you're:

• Financing a new vehicle

• Leasing a vehicle

• Taking out another personal loan

it's worth discussing the potential mortgage impact before signing the agreement.

🏡 What Should You Do If You're Planning to Buy a Home?

If purchasing a home is one of your goals in the near future, consider getting your mortgage strategy sorted out before taking on a major new debt obligation.

Here are some smart steps:

1. Get Pre-Approved

A pre-approval can help you understand your potential borrowing range before you start shopping seriously.

Remember, a pre-approval is not a guarantee of final mortgage approval. Your financial situation and the property itself still need to meet the lender's requirements.

2. Talk to Your Mortgage Professional Before Buying the Car

If you're unsure whether you can comfortably handle both payments, run the numbers first.

A few minutes of planning could prevent an unpleasant surprise later.

3. Avoid Unnecessary New Debt

If you're actively preparing for a mortgage, keeping your financial profile stable can make the process easier.

4. Look at the Bigger Picture

Don't focus only on:

"Can I afford this car payment?"

Also ask:

"How could this payment affect my ability to buy the home I want?"

That's a very different question.

🚗 Should You Never Buy a Car Before a Mortgage?

Not necessarily.

There are situations where someone may genuinely need a vehicle before buying a home.

For example, perhaps your current vehicle is unreliable, you need transportation for work, or your circumstances have changed.

The point isn't:

"Never buy a car."

The point is:

Understand the mortgage impact BEFORE taking on the new debt.

If you're already close to your maximum qualification, even a relatively modest new monthly payment could matter.

💡 The Bottom Line

When you're preparing to buy a home, every major financial commitment deserves a second look.

A new car may seem unrelated to your mortgage, but lenders look at your overall debt obligations when determining how much mortgage you can qualify for.

So before signing that vehicle financing or lease agreement, ask yourself:

"Am I buying a car… or potentially reducing my home-buying power?"

The best time to understand the answer is before you sign.

Planning to Buy a Home?

If you're considering a mortgage and also thinking about purchasing a vehicle, let's look at the numbers before you make a major financial decision.

403-889-5666

DLC Mortgages are Marvellous

General information only. Mortgage qualification depends on individual circumstances, lender guidelines and applicable rules. Speak with a qualified mortgage professional for advice specific to your situation.