Buying a Home With Student Debt in Canada (2026): What Counts, What Hurts, and How to Qualify

You finished school, you have a good job, you've been saving — but you also still have $25K-$60K of student debt and you are not sure if it is going to torpedo your mortgage application. Here is exactly how Canadian lenders treat student debt in 2026, and the practical moves that maximize your approval.

How Lenders See Student Debt

To a mortgage lender, student debt is just another monthly payment — it shows up on your credit report and reduces your TDS (Total Debt Service ratio).

The two types of student debt:

• Government student loans (federal Canada Student Loans + provincial like OSAP, AFE, etc.)
• Bank/credit-union student lines of credit (often used by professional students — medicine, dentistry, law, MBA)

Both count, but they are calculated differently.

Government Student Loans (OSAP, Canada Student Loans)

Most lenders use the actual minimum monthly payment shown on your credit report, after the 6-month grace period and into the repayment phase.

Example. $35,000 federal + provincial student loan, on a 9.5-year repayment plan at the 2026 federal rate (interest-free on the federal portion, prime-floating or fixed prime+1.0% on provincial). Required payment ≈ $370/mo.

Lenders use $370/mo in your TDS calculation.

TDS impact: Roughly $60K-$70K of mortgage capacity reduction vs. having no student loan.

What If I'm Still in School or Grace Period?

Most insured lenders (CMHC, Sagen) will use the estimated future payment at full repayment, not the $0 you're currently paying. Get a "repayment estimate" letter from your provincial loan office before applying.

Student Lines of Credit (Bank LOCs)

These are treated more harshly. Lenders typically use 3% of the outstanding balance per month as the qualifying payment — even if you are only paying interest now.

Example. A medical student LOC with a $90K balance:

• Actual monthly payment (interest-only at prime+0.50% = ~5.95%): ~$447/mo
• Lender's qualifying payment: 3% × $90K = $2,700/mo

That is a brutal hit to TDS. A $2,700/mo phantom payment can wipe out $400K-$500K of mortgage capacity for a single applicant.

The Workaround for Professional LOCs

Some lenders (particularly those specializing in medical/dental files — Scotia Healthcare Plus, RBC Healthcare, BMO MD) use the actual interest-only payment instead of 3% of balance. This is a massive difference. Always ask for a "professional program" lender if you have a large student LOC.

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Real-Dollar Buying-Power Examples

Buyer A — Recent Grad, Government Loan

• Income: $75,000
• Government student loan: $30K, $310/mo payment
• Other debt: none
• Down payment: 5% on $450K
• Result: Qualifies easily. The $310/mo cuts about $52K off potential mortgage capacity, but the file is well within ratios.

Buyer B — Lawyer, Big LOC, Standard Lender

• Income: $130,000
• Bar exam line of credit: $80K balance, paying $400/mo interest-only
• Standard lender uses 3% of balance = $2,400/mo qualifying payment
• Result: Qualifies for ~$385K mortgage instead of ~$760K — about half the buying power.

Buyer C — Same Lawyer, Professional Lender

• Same income, same $80K LOC
• Professional lender uses actual $400/mo
• Result: Qualifies for ~$735K mortgage — full buying power restored

Practical Moves to Maximize Your Buying Power

1. Convert Your Student LOC to a Term Loan

Some institutions let you convert a high-balance student LOC into an installment term loan with an actual amortizing payment. This switches you from "3% of balance" qualifying to "actual payment" qualifying — often unlocking $100K+ of mortgage capacity.

2. Use a Professional Program Lender

If you are in medicine, dentistry, law, or accounting and have a large LOC, work with a broker who has access to medical/professional programs. Worth thousands.

3. Pay Down Aggressively Before Applying

Knocking $10K-$15K off a high-interest student LOC reduces both the actual payment and the qualifying payment. The ROI on this kind of pre-application paydown is huge.

4. Get a Co-Borrower

A spouse, parent, or sibling on the application adds income and balances the debt-to-income ratio. Co-signers must be on title and equally on the hook for the loan.

5. Use the FHSA + RRSP HBP Stacking Rule

In 2026, you can combine the FHSA (up to $40K) with the RRSP Home Buyers' Plan (up to $60K) for $100K of tax-advantaged down payment — this both reduces the loan amount and proves savings discipline to lenders.

Watch-Outs

1. Don't close your student LOC after paying it off. Closing can hurt your credit score short-term. Keep it open with a $0 balance.
2. Avoid taking new credit in the 60 days before applying. Hard inquiries hurt your beacon.
3. Make every student loan payment on time for at least 12 months pre-application. Late payments on student loans are visible to mortgage lenders.
4. Be honest about LOC balances. Lenders pull your credit and will see them.