Key takeaways
- →A signed commitment letter is conditional, not unconditional — almost every Canadian commitment includes a clause requiring the borrower to disclose any material change in their financial circumstances before closing.
- →Some lenders re-verify employment or run a fresh credit check close to the funding date specifically to catch a change the borrower didn't disclose, and it catches more files than brokers expect.
- →Job loss, new debt taken on before closing, missed payments, or a change in employment status — like moving from permanent to contract — are the changes most likely to trigger a pulled or amended commitment.
- →The best protection against a pulled commitment is proactive disclosure coached ahead of time, plus timing the final employment letter and credit pull as close to closing as the lender allows.
A commitment letter can feel like the file is done, but it isn't an unconditional promise to fund — it's a promise conditional on nothing material changing between the day it's issued and the day the mortgage actually closes. Almost every Canadian commitment includes language requiring the borrower to disclose a material change in financial circumstances before closing, and some lenders don't just wait to be told; they re-check.
Here's what a lender is actually re-reviewing close to funding, what counts as a material change serious enough to trigger a pulled or amended commitment, and the disclosure habits that protect a broker's closing instead of leaving it exposed.
01 · Is a signed mortgage commitment actually a guarantee to fund?
No — it's conditional on the file staying materially the same as it was when the lender approved it. The disclosure clause built into nearly every Canadian commitment letter puts the obligation on the borrower to flag a material change, but a lender who discovers one on their own, rather than being told, treats the file very differently than one where the broker or borrower got ahead of it.
This distinction is easy for clients to underestimate, since a commitment letter reads like a finished decision once it's signed. Framing it accurately — as an approval that holds as long as nothing material changes, not a guarantee that survives any circumstance — up front, rather than after something has already gone sideways, is a large part of what keeps a client's behaviour in the weeks before closing from putting the file at risk in the first place.
02 · What does a lender actually recheck close to the funding date?
| Trigger | Typical lender response |
|---|---|
| Employment re-verification finds a change in status or employer | Request for updated documentation; may amend or pause the commitment |
| Fresh credit pull shows new debt or a missed payment | Ratios recalculated; may require the new debt be paid out or the file re-approved at a lower amount |
| Large new deposit with no clear paper trail | Additional source-of-funds documentation requested before funding proceeds |
Not every lender rechecks every file the same way, and that's worth knowing rather than assuming the worst on every closing. Some lenders re-verify employment on virtually every file close to funding as standard practice; others rely more heavily on the disclosure clause itself and only dig deeper if something in the file already looked borderline. A broker who knows which posture a given lender takes can calibrate how much proactive reassurance a client actually needs before closing day.
The credit refresh is usually the cheapest and fastest check for a lender to run, which is why it's common even at lenders that don't formally re-verify employment on every file. A single new inquiry or account opened in the weeks before closing shows up immediately on a fresh pull, and it's often the first signal that prompts a lender to ask more questions rather than the trigger for an automatic decline on its own.
03 · What actually counts as a material change serious enough to matter?
- →Job loss, or a move from permanent employment to a probationary or contract position
- →New debt taken on before closing — a car loan or furniture financing are common examples that show up on a fresh credit pull
- →A missed payment on an existing obligation between approval and closing
- →A large new deposit into the account being used for closing funds, without a paper trail explaining where it came from
The article on why mortgage files get declined in Canada covers the fuller set of decline reasons this connects to, including the ones present from the start rather than surfacing after approval.
It's worth noting what usually doesn't count as material, since clients sometimes over-disclose out of anxiety once they understand the stakes. A modest, explainable dip in a chequing account balance from ordinary spending, or a small routine purchase on an existing credit card well within the established limit, isn't the kind of change a lender is watching for — the threshold is a change that actually affects the borrower's income, debt load, or ability to close, not everyday financial activity.
Catching a material change before the lender does
Disclosure coached in, not left to chance.
Treadstone's fulfillment associates build the disclosure conversation into every closing sequence, so a material change surfaces to the lender from the broker, not the other way around.
04 · What actually protects a closing from a pulled or amended commitment?
Coaching the client on disclosure the moment the commitment is signed — explicitly naming the kinds of changes that matter, not assuming common sense covers it — catches most of these before they become a surprise. Timing the final employment letter and any last credit pull as close to closing as the lender allows reduces the window where an undisclosed change can sit unnoticed.
The Closing-Week Checklist guide builds that disclosure conversation into the standard closing sequence. Brokers using Treadstone's fulfillment associates get that follow-up run consistently on every file instead of only on the ones a broker remembers to double back on.
The tone of that disclosure conversation matters as much as having it at all. Framed as a routine part of every closing rather than a suspicious interrogation, most clients respond to it well and appreciate knowing exactly what's expected of them; framed as an afterthought squeezed in during a rushed pre-closing call, it's far more likely to be forgotten or downplayed right when a genuine change actually needs to be flagged.
Frequently asked questions
This article is general information to help you scale — not a substitute for tailored advice on your specific business, licensing, or compliance obligations. All figures are illustrative examples for planning purposes; actual costs vary by province, market, and brokerage.

