NEW IMAGE – What Credit Score Do You Need for a Mortgage in Canada?

Six hundred gets you in the door with mortgage default insurance. Six hundred eighty is where most big banks actually start feeling comfortable. Below that, the door doesn’t close, it just leads somewhere different, toward B-lenders, credit unions, and eventually private lenders, each with their own price for taking on more risk than the bank down the street is willing to carry.

In Canada, you need a minimum credit score of 600 to qualify for a CMHC-insured mortgage, the type most first-time buyers use with under 20% down. Major banks typically want 680 or higher for their best rates and terms. Scores between 600 and 680 usually mean working with a credit union, monoline lender, or B-lender, and scores below that generally push buyers toward private lending. None of these numbers are guesses, but they’re not all coming from the same place either, and understanding why matters more than memorizing the thresholds.

The Regulatory Floor Versus What Lenders Actually Want

There’s a real difference between a hard rule and a comfort zone, and mortgage lending in Canada runs on both at once. The 600 figure isn’t a bank’s opinion. It comes directly from the mortgage insurers, and CMHC’s own underwriting page states plainly that at least one borrower or guarantor must have a minimum credit score of 600 to qualify for its purchase mortgage loan insurance. Sagen and Canada Guaranty, the two other approved default insurers, apply similar underwriting standards.

The 680 figure is a different animal entirely. No bank publishes an official cutoff carved in stone, but it shows up consistently enough across the industry to treat as a real practical benchmark. Scotiabank’s own consumer page states directly that buyers should aim for at least a 680 to qualify for a mortgage, and that number lines up with what other major banks look for internally. This is a lender’s own risk appetite, not a government rule, which is exactly why it can differ slightly from one institution to the next even though the 600 regulatory floor stays fixed.

When Insurance Enters the Picture at All

None of the 600 threshold matters if your down payment is 20% or more, since mortgage default insurance only comes into play on high-ratio mortgages, the ones where the buyer puts down less than a fifth of the purchase price. According to CMHC’s own general requirements page, the minimum down payment for an insured mortgage is 5% on the first $500,000 of the purchase price and 10% on the portion above that, up to a purchase price cap of $1.5 million.

Put real numbers on it and the tiers get concrete fast. A $450,000 home needs a minimum down payment of $22,500. A $700,000 home needs $45,000, which is 5% of the first $500,000 plus 10% of the remaining $200,000. Cross into 20% down or more on any of these and CMHC insurance, along with its 600-score requirement, simply stops being relevant, since your mortgage becomes conventional rather than insured. The score still matters to whichever lender you approach, but it’s no longer routed through an insurer’s minimum.

The Same Two Debt Ratios, Regardless of Your Score

A high credit score doesn’t override a weak debt profile, and this is where a lot of people assume the score is doing more work than it actually is. CMHC caps the Gross Debt Service ratio, your housing costs against your gross income, at 39%, and the Total Debt Service ratio, all your debt payments against that same income, at 44%. Both ratios apply on top of whatever your credit score qualifies you for, not instead of it.

On a $7,500 monthly gross household income, that 39% ceiling caps total housing costs, mortgage payment, property tax, heating, and half of any condo fees, at $2,925 a month. A borrower with an 800 credit score and a maxed-out car loan can still fail this ratio just as easily as someone with a 620 score and no other debt at all. The score decides which lender pool you’re swimming in. The ratios decide whether you can actually afford what you’re asking to borrow within that pool.

The Stress Test Has Nothing to Do With Your Score

This is the mistake we see trip people up constantly, conflating the mortgage stress test with their credit score, when the two are calculated by completely different bodies for completely different reasons. According to the Office of the Superintendent of Financial Institutions, federally regulated lenders must qualify borrowers using a minimum qualifying rate set at whichever is higher, the mortgage’s actual contract rate plus 2%, or a floor of 5.25%. This is called the Minimum Qualifying Rate, and it exists under OSFI’s Guideline B-20 to confirm a borrower could still handle their payments if rates climbed or their income dropped.

Your credit score plays no role in setting this stress test rate. A borrower with a 620 and a borrower with an 820 applying for identical mortgage amounts at identical contract rates get stress tested at the same qualifying rate. What the score changes is the contract rate itself, since a stronger score typically earns access to a lower rate to begin with, which in turn produces a lower stressed payment. The stress test is a fixed hurdle applied uniformly. The score is what determines how high or low your starting point is before you clear it.

Below the Bank Comfort Zone

A score sitting between 550 and 680 doesn’t shut anyone out of homeownership, but it does redirect the search. Credit unions, monoline lenders, and B-lenders operate with more flexibility than the big banks and are often the practical landing spot for scores in this range, particularly when the rest of the application, income, employment history, down payment, is otherwise solid. The tradeoff is a higher interest rate than a prime lender would offer, sometimes meaningfully higher, plus occasionally tighter conditions on the mortgage itself.

Working with a mortgage broker becomes worth the effort at this stage rather than optional, since a broker can shop an application across several lender tiers simultaneously instead of a single applicant guessing which institution might say yes. Comparing offers from a credit union against a traditional bank at this score range specifically is worth the extra legwork, since credit unions frequently show more willingness to work with a borrower’s full financial picture rather than leaning purely on the number.

When No Traditional Lender Will Touch It

Below 550, or in situations involving a recent bankruptcy, consumer proposal, or serious delinquency, private lending becomes the realistic option for most borrowers. Private lenders don’t apply a fixed minimum credit score the way CMHC does. They lend primarily against the equity in the property itself, which means a large down payment or substantial existing equity in a refinance situation matters more here than the three-digit number does. The cost of that flexibility is real, with interest rates running well above what any bank or B-lender would charge, plus lender and broker fees layered on top.

This tier is rarely a permanent home. Most people who land here are using a private mortgage as a short-term bridge, one or two years, while they rebuild their score and move toward refinancing with a B-lender or eventually an A-lender once their file looks stronger. Treating it as a temporary stop rather than a resting place changes how a borrower should approach the terms, since chasing the absolute lowest rate matters less here than avoiding a prepayment penalty that would trap them past the point their credit recovers.

Whose Score Counts on a Joint Application

Couples applying together often assume both applicants need to individually clear whatever threshold applies for mortgage insurance eligibility, and that’s not quite how CMHC’s rule is written. The requirement is that at least one borrower or guarantor meets the 600 minimum, not that every person on the application does. This matters most when one partner has a strong file and the other is still building credit or recovering from a rough patch, since the stronger score can anchor the application rather than the weaker one dragging it down on its own.

That said, income still gets pooled and assessed jointly for the debt service ratios, so a mismatched pair of scores doesn’t mean the weaker applicant’s income or debt disappears from the equation. It just means the credit-score gate specifically looks at whether anyone on the file clears it, which is a narrower question than whether everyone does.

Buying With No Credit History at All

Newcomers to Canada and young buyers with a thin credit file face a slightly different problem than a low score, since there’s often no score to evaluate in the first place. CMHC’s own guidance acknowledges this directly, noting it may consider alternative methods of establishing creditworthiness for borrowers without a credit history, rather than an automatic rejection. In practice this usually means documented rent payment history, utility payment records, or other evidence a lender can substitute for a traditional credit file. Several major banks also run dedicated newcomer mortgage programs built specifically around this gap, so it’s worth asking directly rather than assuming a lack of history functions the same as bad credit.

Where This Leaves You

Anyone within a year or two of applying should pull their reports from both Equifax and TransUnion now rather than waiting until a broker asks for them, since fixing an error or paying down utilization takes time to show up. Run the affordability math on your actual income and existing debt before falling in love with a price range your score alone might qualify you for, since the debt service ratios can cap you well below what the credit tier suggests. Whatever tier you land in, comparing current mortgage rates and rate shopping across a few lenders still matters at every score level, since even within the same tier, rates aren’t identical from one lender to the next. A score currently sitting below what a bank wants isn’t the end of the search either, since a secured card or credit-builder product used for a year before applying can be the difference between a B-lender rate and an A-lender one.

This post reflects my own research and shouldn’t be taken as personalized financial advice. See my full disclaimer for more.

A Few Things People Ask Next

Does a higher credit score actually get me a lower mortgage rate, or just approval? Both. Approval and pricing aren’t separate decisions. A stronger score generally unlocks a lower contract rate at the same lender, on top of opening the door to lender tiers that offer better rates in the first place.

Can I get a mortgage with a 600 score and less than 20% down at the same time? Yes, provided the rest of the application clears the debt service ratios and the property and purchase price fall within CMHC’s rules. The 600 score is the insurer’s floor specifically for that scenario, not an exception to it.

Do mortgage brokers charge extra for working with a lower score? Generally not directly. Brokers are typically compensated by the lender they place you with rather than charging the borrower a separate fee, though private lending deals sometimes involve broker or lender fees baked into the cost structure regardless of who arranges it.