The short version
Pre-qualification is a 5-minute conversation. You tell the broker your income, debts, and down payment; they run the affordability math and give you a ballpark price range. No documents, no credit pull, no commitment.
Pre-approval is a formal application. The lender pulls your credit, verifies your income with real documents, confirms your down payment source, and issues you a written letter with a rate held for a set period. This is what sellers and realtors actually take seriously.
Both have a place. Pre-qualification helps you size the search early. Pre-approval is what you need before you start writing offers.
Pre-qualification in detail
Pre-qualification is a back-of-envelope estimate. A broker (or sometimes a bank rep) asks for:
- Approximate annual household income
- Approximate monthly debt payments (cards, car, student loans)
- Approximate down payment
- General credit rating ("I think I'm around 740")
They plug it into an affordability tool — try ours at affordability calculator — and tell you a maximum purchase price. No credit check, no document review, no rate hold.
It's useful for:
- Realtors who need to know which neighbourhoods to show you
- First-time buyers who want a reality check before saving up further
- Anyone deciding whether to keep saving vs start shopping
It's NOT useful for:
- Writing a real offer
- Locking in today's rate
- Convincing a seller in a multiple-offer situation
Pre-approval in detail
Pre-approval is a formal lender review. You submit a full application package, give written consent for a credit pull, and the lender's underwriter (or AVM-driven engine) reviews everything against their actual guidelines.
The output is a written pre-approval letter that says: "We have reviewed [borrower's] application and have approved them up to a mortgage of [$X] at a rate of [Y%], subject to verification of the subject property and re-confirmation of income at offer time. This pre-approval is valid until [date]."
That letter is what your realtor attaches to your offer. It signals to sellers: this buyer is real, the financing is virtually certain to clear, the closing date will hold.
What you'll need for a pre-approval
Standard package for an A-tier salaried application:
- 2 years of T4 slips OR most recent Notice of Assessment (NOA)
- Most recent paystub (some lenders want 2 — most just want the latest)
- Letter of Employment from your employer (position, start date, salary, T4 income, employment type)
- 90 days of bank statements showing down payment funds accumulating
- Photo ID (driver's licence + one other government-issued)
- Written credit consent to pull Equifax + TransUnion
- List of existing debts with balances and monthly minimums
For self-employed (BFS) applicants, add:
- 2 years of T1 General (full return, not just T4 portion)
- 2 years of NOAs
- Business financial statements (last 2 years)
- HST/GST returns for the last 2 years (if registered)
- Articles of incorporation if incorporated
- Bank statements for both personal and business accounts
For commission-based or contract income, add 2 years of pay-stub history showing the income pattern.
How long does pre-approval take?
For a clean A-tier file with all documents ready:
- Online big-bank pre-approval: 1–3 business days
- Broker-channel pre-approval at a monoline: 1–5 business days
- Self-employed or complex files: 5–15 business days
Most pre-approval rate holds last 90–120 days. Some lenders extend to 130 days for first-time buyers in slow markets. If you don't find a property in that window, you renew the pre-approval (and either keep the rate or reset to whatever's current).
What pre-approval doesn't guarantee
This is where buyers sometimes get burned. A pre-approval is conditional. The lender still needs to approve:
- The subject property — appraisal value, condition, marketability
- Re-verified income at the time of your accepted offer (your employer might have changed, your income type might have shifted, your bank statements might show new debts)
- Final credit pull at funding (new credit you took on between pre-approval and closing can sink the deal)
- Down payment source confirmation — funds traced 90 days back to source
Translation: don't buy a new car, open a new credit card, change jobs, or take on a personal loan between pre-approval and closing. We've seen all four sink deals at the last hour.
When to upgrade from pre-qual to pre-approval
The clearest signal: you're about to start writing offers. If your realtor is taking you through homes you'd actually buy, you need a pre-approval letter on standby.
The other signal: you want to lock today's rate because rates might rise during your search. A 90-day rate hold can be worth $5,000–$15,000 of payment savings over a 5-year term if rates move 25–50 bps higher.
Pre-approval at a broker vs at your bank
You can get pre-approved at your bank or through a broker who shops 30+ lenders. The broker route usually gives you a better rate (because it's competitive), but you can only have one active pre-approval rate-hold at a time per lender.
Most brokers will run the same lenders' systems your bank uses, but with broker-channel pricing that's typically 15–30 bps below the bank's direct retail pricing. Same lender, lower rate, same approval certainty.
What to do next
- Run the affordability calculator to set expectations at your income, debts, and down payment
- If the number works for the homes you're targeting, talk to a broker about a pre-approval
- Gather your documents BEFORE the credit pull — clean files get faster, better answers
A pre-approval doesn't commit you to anything. But it converts shopping from "maybe I can buy this" to "I can buy this, and here's the proof."