Mortgage Pre-Approval Checklist — Canada 2026
Getting pre-approved for a mortgage is one of those things that sounds straightforward until you actually sit down to do it. The lender asks for a surprising amount of documentation, and missing even one item can delay the process by weeks. This is the complete checklist — what you need, why they ask for it, and the mistakes that trip people up.
What Is a Mortgage Pre-Approval, Exactly?
A pre-approval is a lender's conditional commitment to lend you a specific amount at a specific rate, based on a review of your financial situation. It's not a guarantee — the final approval depends on the property itself and your situation not changing — but it's as close as you can get before making an offer.
Two important things it does for you: it tells you exactly how much you can afford (after the stress test, which usually surprises people), and it locks in a rate for 90 to 120 days. If rates go up during that window, you're protected. If they go down, most lenders will give you the lower rate.
It also signals to sellers and their agents that you're a serious buyer. In competitive markets, an offer without pre-approval is often not taken as seriously.
The Document Checklist
Every lender asks for roughly the same things, though the exact format varies. Here's what to have ready before your first meeting with a broker or bank.
Identity and Personal Information
Proof of Income — Salaried / Hourly Employees
Proof of Income — Self-Employed / Business Owners
Self-employed income is where pre-approvals most often stall. Lenders typically average your last 2 years of T1 income, which means a bad year 2 years ago can drag down your qualifying amount even if this year is great. Get your accountant involved early.
Down Payment Documentation
This trips up more buyers than almost anything else. Lenders want to see that your down payment funds have been sitting in your account for at least 90 days. This is to confirm the funds aren't borrowed. If you transfer money between accounts, large deposits suddenly appear, or you receive a gift close to your application date — you'll need to explain and document every dollar. Plan your transfers well in advance.
Debts and Obligations
If You Already Own Property
What Lenders Actually Look At
Behind all the paperwork, lenders are evaluating five things. Understanding these helps you prepare a stronger application:
1. Credit Score
Most A-lenders want a minimum score of 680, though some will go to 620. Above 760 typically gets you the best rates. Check your score before applying — if there are errors or old collections, cleaning them up first can save you thousands over the life of your mortgage.
2. Income Stability
They want to see that your income is reliable and likely to continue. For salaried employees this is fairly simple. For self-employed applicants, they want at least 2 years of consistent income history. A big dip in either year raises questions. If you're self-employed, see how lenders calculate your qualifying income with ClearKey's income qualifier.
3. Debt Service Ratios
Your GDS (Gross Debt Service) ratio should be under 39% and your TDS (Total Debt Service) under 44%. These are calculated using the stress test rate, not your actual rate. This is where most "I thought I could afford more" moments happen. Every car payment, student loan, and credit card minimum counts against you. Run your numbers through ClearKey's stress test calculator and GDS/TDS qualifier before you apply.
4. Down Payment Source
They need to trace where every dollar came from. Savings that have been in your account for 90+ days are easy. Recent gifts, transfers, or liquidated investments all require documentation. Borrowed down payments are not allowed on insured mortgages (less than 20% down).
5. Employment History
Job hopping isn't necessarily a dealbreaker, but being in a new role for less than 3 months — especially during probation — can complicate things. If you're thinking about changing jobs, try to do it either well before or well after your mortgage application.
Pre-Approval vs Pre-Qualification
These are not the same thing, even though some lenders use the terms loosely. A pre-qualification is a quick estimate based on what you tell the lender verbally — no documentation verified, no credit check run. It's essentially a guess.
A pre-approval involves the full document review, credit check, and a conditional commitment at a locked rate. It carries actual weight when making an offer. Always ask which one you're getting.
Common Mistakes That Kill Pre-Approvals
- Changing jobs during the process. Lenders verify employment right before closing. A new job — especially if it's during a probation period — can cause the approval to be pulled.
- Making large purchases on credit. Buying a car, furniture, or appliances on credit between pre-approval and closing increases your debt ratios. The lender does a final credit check. Don't do this.
- Large unexplained deposits. If $15,000 suddenly appears in your account, you need to explain it with a paper trail. Cash deposits are particularly problematic.
- Co-signing for someone else. If you co-sign a loan for a family member during the process, that debt shows up on your credit report and counts against your ratios.
- Closing credit accounts. This seems counterintuitive, but closing a long-standing credit card can actually lower your score by reducing your credit history length and available credit.
- Filing taxes late. If your NOA is missing or your taxes aren't filed, most lenders won't proceed. Get this done before applying.
Between pre-approval and closing: don't borrow anything new, don't lend your name to anyone else's debt, don't quit your job, and don't make any large financial moves without talking to your broker first. Boring is good during this window.
Bank vs Mortgage Broker
Your bank can pre-approve you, but they can only offer their own products. A mortgage broker shops your application across 30+ lenders and often finds better rates and terms. Their service is typically free to you — the lender pays the broker's commission.
The main advantage of a broker is that they know which lenders are most competitive for your specific situation. Self-employed? There are lenders that specialize in that. Newcomer to Canada? Different lenders again. A broker matches you to the right lender, not just the closest bank branch.
That said, some banks occasionally offer retention rates or bundle discounts that a broker can't access. It doesn't hurt to check with your bank too, then compare.
How Long Does Pre-Approval Take?
If your documents are organized and your financial situation is straightforward, a broker can often get you pre-approved within 1-3 business days. Self-employed applicants or complex files can take 1-2 weeks.
The biggest delays come from missing documents. If your lender asks for your T1 and you haven't filed yet, that's not a 2-day fix. Get everything together before your first meeting and the process goes much faster.
Before you start gathering documents, find out where you stand. ClearKey's free calculator runs your income, debts, and target price through the OSFI stress test to show you what you'll likely qualify for — so you know what to expect when you sit down with a broker.
Check My Numbers →Quick Summary
- Get your documents organized before meeting with a lender — missing paperwork is the #1 cause of delays
- Self-employed applicants: get your accountant involved early and make sure your last 2 years of T1s are filed
- Make sure your down payment has been in your account for 90+ days before applying
- Don't change jobs, take on new debt, or make large financial moves between pre-approval and closing
- Use a mortgage broker to compare offers from multiple lenders — it's typically free to you
- Pre-approval locks your rate for 90-120 days and shows sellers you're serious
- Check your credit score before applying and dispute any errors