Blog > Mortgage Pre-Approval in Ontario: What It Actually Guarantees, and What Can Still Change
Mortgage Pre-Approval in Ontario: What It Actually Guarantees, and What Can Still Change
by
The short answer: a pre-approval is a lender's assessment of your finances that sets a maximum mortgage amount and can hold an interest rate for 60 to 130 days, depending on the lender. It is not an approval. The Financial Consumer Agency of Canada is blunt about it: the process does not guarantee your approval for a mortgage. The final number still depends on the property you buy, its appraised value, your down payment, and whether anything in your file changes between now and closing.
Almost every buyer I work with starts in the same place. They talk to a lender or a broker, they get a number, and they treat that number as settled. Then something shifts, usually small, and the financing they thought was locked turns out to have conditions nobody walked them through. Here is what a pre-approval actually commits a lender to, what it does not, and the parts that matter more than usual on Eastern Ontario properties.
What a pre-approval is, in plain terms
A lender looks at your income, your assets, and your debt, and tells you the maximum mortgage you could qualify for and roughly what the payments would be. To do that properly they want documents: identification, proof of employment and income, proof of where the down payment is coming from, and details of your other obligations. The output is two things. A ceiling, and usually a rate hold.
The rate hold is the part buyers underrate. It protects you from rate increases for a set window while you shop. If rates fall in that window, most lenders will give you the lower rate. What the hold does not do is commit the lender to fund a purchase they have not seen yet.
Pre-qualification, pre-approval, approval: three different things
These get used interchangeably, including by people who should know better. They are not the same, and the difference shows up when you are writing an offer.
| Stage | What it is based on | What it actually gives you |
|---|---|---|
| Pre-qualification | Numbers you tell the lender, often over the phone or through a form | A rough estimate. No rate hold, no document review, and very little weight in a negotiation |
| Pre-approval | Documents the lender has reviewed: income, assets, debts, credit | A maximum amount and usually a rate hold of 60 to 130 days. Not a guarantee of approval |
| Final approval | Your file plus the specific property, its value, and the accepted agreement | A commitment to fund that purchase, subject to the lender's remaining conditions |
You are not qualified at the rate you were quoted
This is the single most common surprise. Lenders do not test whether you can carry the payment at your contract rate. They test you at a higher qualifying rate. For uninsured mortgages, meaning 20 per cent down or more, the Office of the Superintendent of Financial Institutions sets that minimum qualifying rate at the greater of your contract rate plus two percentage points, or 5.25 per cent.
If you are putting less than 20 per cent down, your mortgage is an insured one and the qualifying rules come through the federal insured mortgage framework rather than the OSFI guideline. The practical step is the same either way: ask your broker which qualifying rate they used on your file, and what your maximum would look like if it moved.
The down payment rules behind your number
Your maximum is not just an income calculation. The minimum down payment in Canada is tiered by purchase price: five per cent on a home priced at $500,000 or less; five per cent of the first $500,000 plus ten per cent of the portion above it between $500,000 and $1.5 million; and 20 per cent at $1.5 million or more. Below 20 per cent down you will typically need mortgage loan insurance.
Two changes from December 15, 2024 still shape files today. The price cap for insured mortgages went from $1 million to $1.5 million, and 30 year amortizations became available to all first-time home buyers and to all buyers of new builds. A longer amortization lowers the monthly payment and can raise the maximum a lender will lend. It also means more interest over the life of the loan, so it is a trade, not a free upgrade.
If you are insured, the premium is a percentage of the loan that scales with how little you put down. CMHC's homeowner premium runs from 0.60 per cent up to 65 per cent loan to value, through 2.80 per cent at 80.01 to 85 per cent, 3.10 per cent at 85.01 to 90 per cent, and 4.00 per cent at 90.01 to 95 per cent, with 4.50 per cent where the down payment comes from a non-traditional source. In Ontario the premium is subject to provincial sales tax, so ask your broker what that adds at closing. The deposit you write with your offer is a separate thing again, and I have covered how the deposit and the down payment differ in full.
What can still change after you are pre-approved
A lender can still decline, or approve you for less, after a pre-approval. The reasons FCAC lists are the ones I see in practice: the property does not meet the lender's requirements, something in your credit history, or another of the lender's own guidelines. Instead of an outright refusal you may be offered a smaller amount, a higher rate, a larger down payment requirement, or a request for a co-signer.
- Changing jobs, going from salaried to contract, or starting self-employment between pre-approval and closing
- New debt, including a car loan, a financed purchase for the new house, or a new credit line
- Down payment funds that arrive from a source the lender has not seen and cannot trace
- Missed payments, or a credit score that moves before the file is finalized
- A rate hold that expires while you are still shopping
The rule I give buyers is simple. From the day you are pre-approved to the day you close, change nothing about your money without telling your broker first.
The property has to qualify too
A pre-approval is about you. Final approval is about you and the house. The lender will care what the property appraises at, and if it appraises below the price you agreed to, the shortfall comes out of your pocket, not theirs. On some properties they will care about a good deal more than value.
Between Ottawa and Brockville, plenty of the good inventory is rural or semi-rural, and that is where financing gets particular. Lenders commonly want a potable water test result on a private well, and evidence that the septic system is functional. Year round access on an assumed or private road, unusual acreage, a property with a commercial component, or heating the insurer does not like can all narrow the list of lenders willing to fund it.
None of that is a reason to avoid rural properties. It is a reason to tell your broker before you write, and to keep the condition period long enough to actually finish the work. What to check on the water and the septic is covered in my guide to wells and septic systems in Eastern Ontario.
This is also why a financing condition is worth more than a pre-approval letter in most situations. The condition gives you the days to convert a pre-approval into a real commitment on a real property. How offer conditions work in Ontario goes through the wording and the timelines.
Common questions
How long does a pre-approval last?
The rate hold runs 60 to 130 days depending on the lender. Ask for the exact expiry date in writing, and ask what happens if you are still looking when it lapses. Renewing usually means an updated file, not just a phone call.
Should I borrow the maximum I am pre-approved for?
The pre-approval is a ceiling, not a recommendation. It is the largest amount the lender would consider, calculated before property taxes on the specific house, heating on the specific house, and whatever else your month actually costs. Most buyers I work with settle somewhere below it on purpose.
Does getting pre-approved with more than one lender hurt me?
A pre-approval involves a credit check. Rather than collecting several on your own, a broker can usually shop multiple lenders from one application. If you want to compare, tell each of them what you are doing and ask how they handle the credit inquiry.
Can I write an offer without a pre-approval?
You can, and in a multiple offer situation you may be asked to write without a financing condition, which is a different level of risk entirely. If you are working out the sequence of the whole purchase, my step-by-step guide to buying a resale home in Ontario sets out where financing fits.
If you want a straight read on your own number
If you are early in this and want to know what your pre-approval will realistically support in Ottawa, Orleans, Kemptville, Brockville or along the corridor, send me your rough timing and the kind of property you have in mind. I will tell you what I am seeing at that price, flag anything about the property type that tends to complicate financing, and put you in touch with a mortgage broker if you do not have one. No obligation, and no pressure if you are still months out.
Dan Jutai, Salesperson, Dan J Realty at eXp Realty Brokerage. Call or text 613-818-6227, email dan@danjrealty.ca, or use the contact page.
Sources and currency: Financial Consumer Agency of Canada for what a preapproval is, the 60 to 130 day rate hold, the statement that preapproval does not guarantee approval, the reasons a lender may still refuse, and the minimum down payment tiers. Office of the Superintendent of Financial Institutions for the minimum qualifying rate on uninsured mortgages, the greater of the contract rate plus two per cent or 5.25 per cent. Department of Finance Canada for the mortgage reforms in force December 15, 2024, including the $1.5 million insured price cap and 30 year insured amortizations for first-time buyers and buyers of new builds. Canada Mortgage and Housing Corporation for homeowner mortgage loan insurance premium rates and provincial sales tax on premiums in Ontario. Rules, rates and thresholds change. This article is general information for Ontario residential buyers and is not mortgage, legal or financial advice. I am not a mortgage broker or lender. Verified September 2026.