Getting a Mortgage With Student Debt

Getting a mortgage with student debt is possible in Canada — and it happens every day. Lenders do not disqualify you simply because you still owe a student loan. What decides your application is how your student loan payment fits into your GDS and TDS ratios, how your credit history looks, and whether your income clears the federal mortgage stress test.

How Canadian Lenders Treat Student Debt

When your student loan is in repayment, lenders count the required monthly payment as part of your total debt load. That payment flows into your total debt service (TDS) ratio, which compares all housing costs plus every other debt payment against your gross income. Your gross debt service (GDS) ratio covers housing costs on their own. See how lenders measure affordability with GDS and TDS for the full calculation.

Most lenders work with a GDS ceiling in the mid-30s and a TDS ceiling in the low-to-mid 40s, but the exact limits vary by lender, by loan-to-value, and by whether the mortgage is insured. Ask each lender what ratio ceilings it applies before you decide whether you can qualify.

A few common scenarios change how the debt is counted:

If your credit report shows a balance but no payment, expect questions. Ask your lender whether it will use the payment shown on your statement, the payment the National Student Loans Service Centre reports, or an estimate based on the outstanding balance. Federal student loans generally offer a grace period after you leave school, so confirm the current terms with the NSLSC before you assume a payment has disappeared.

Your Student Loan Payment and the Stress Test

Even a modest student loan payment changes how much you can borrow, because OSFI Guideline B-20 requires federally regulated lenders to qualify you at a rate higher than the one on your contract. That is the mortgage stress test: the higher of your contract rate plus two percentage points, or the published qualifying-rate floor. Confirm the current floor with OSFI or your lender, since it is reviewed from time to time.

Because the stress test shrinks your qualifying income, every recurring debt payment — including a student loan — eats into the mortgage you can carry. Run both numbers side by side before you shop: read how the Canadian mortgage stress test works, then test your own figures with the mortgage stress test calculator.

Credit History: Where Student Debt Really Matters

A student loan on its own is neutral. Late payments are not. Federal and provincial student loans are reported to the credit bureaus, so a missed payment, a collection account, or a default leaves a mark that affects both your score and how a lender reads your file. Lenders also look at how long you have held credit, how close your balances sit to their limits, and whether anything has gone to collections.

If you have damaged credit alongside your student debt, you may still qualify — but usually at a higher rate, with a larger down payment, or through a lender that specialises in bruised credit. Start with getting a mortgage with bad credit in Canada to understand what lenders look for and how to rebuild before you apply.

Practical Steps to Strengthen Your Application

• Pay down the highest-impact debt first. A smaller balance can mean a smaller required payment, which frees up TDS room.
• Use the grace period wisely. If your loan is interest-free for a period after school, saving for a down payment during that window can beat rushing to buy.
• Avoid new credit. A car loan or a new credit card between pre-approval and closing can undo your file.
• Document your income carefully. Pay stubs, letters of employment, and notices of assessment all matter, especially if you work on contract or recently changed jobs.
• Ask about professional programs. Some lenders offer more flexible ratio treatment and higher loan-to-value financing for doctors, dentists, lawyers, accountants, and other accredited professionals. See mortgage programs for professionals.
• Get pre-approved early. A pre-approval shows the number you actually qualify for, not the number you hope for.

Down Payment Options While Carrying Student Debt

Your student loan affects your ratios, not your ability to save. Two registered accounts are worth knowing about:

• The RRSP Home Buyers' Plan lets you withdraw from your RRSP to buy or build a qualifying home, provided you repay the amount over a set period. Confirm the current withdrawal limit with the CRA.
• The First Home Savings Account (FHSA) lets first-time buyers contribute, deduct those contributions, and withdraw qualifying amounts tax-free.

Remember that the minimum down payment is tiered: it starts at a percentage of the purchase price and rises for higher-priced homes and for properties that need CMHC mortgage default insurance. Confirm the current tiers on the CMHC website, and budget for closing costs such as provincial land transfer tax, legal fees, and the appraisal — none of which you can borrow for. Estimate your target with the down payment calculator.

When Student Debt Becomes a Real Obstacle

Student debt turns into a genuine problem for mortgage qualification in three situations: the balance is large relative to your income, the required payments push your TDS past what lenders will accept, or your file has already gone to collections or default. If you are inside a repayment-assistance arrangement or a default, deal with that first — the mortgage conversation gets much easier once the loan is current or closed.

Waiting is often cheaper than buying now. Paying the loan down for another year, building a longer credit history, and saving a larger down payment can move you from a non-prime lender back to a mainstream one, which typically means a lower rate over the life of your mortgage. Re-check your borrowing power every few months rather than once, and renew the conversation with a broker or lender as your balance drops.