Key takeaways
- →An underwriter skims a submission note in under two minutes before opening a single document — the note's job is to make the file's story obvious in that window, not to repeat what's already in the application.
- →The story an underwriter is actually looking for is simple: income, the ratios it supports, the LTV, and a one-line explanation for anything that doesn't match the credit bureau or the application at a glance.
- →A note that flags and explains an anomaly — a large deposit, a short employment gap, a co-signed debt — before the underwriter finds it themselves reads as a stronger file, not a weaker one.
- →The right length and emphasis for a submission note shifts by lender type: an A-lender underwriter wants a tight ratio summary, while a B-lender or private file often needs more narrative around exit strategy and equity.
A broker who spends twenty minutes writing a submission note and still gets a round of avoidable follow-up questions usually made one mistake: they wrote a note for themselves, not for the underwriter reading it in the two minutes before they open the file. Underwriters process dozens of submissions a week, and the note is the only part of the package written specifically to orient them — everything else is documents they still have to read on their own.
Here's what actually gets scanned first, the handful of elements that separate a note that speeds a first-pass approval from one that gets skimmed and set aside, the mistakes that slow a note down without the broker realizing it, and how the right note shifts depending on the lender reading it.
01 · What does an underwriter actually look for first in a submission note?
Before anything else, an underwriter is looking for the shape of the deal: the income figure they should expect to see supported in the documents, the ratios that figure produces, and the loan-to-value. Those three numbers tell them within seconds whether the file fits the product they're underwriting it against.
Right after that, they're scanning for anything that doesn't line up — a name spelled two ways, a debt on the bureau that isn't on the application, an address history with a gap. A note that gets ahead of those mismatches with a one-line explanation keeps the file moving; a note that's silent on them means the underwriter finds the mismatch cold, mid-review, and stops to ask about it. The article on first-pass approval rate covers why that first read matters as its own metric.
That two-minute window isn't the underwriter being careless — it's the reality of a desk carrying a full daily queue, where every submission competes for the same limited attention before the next one lands. A note that respects the window earns a more careful second read once the underwriter is satisfied nothing's hiding in the file; a note that ignores it, burying the story under restated fields, gets triaged into the pile that waits for a slower day. That triage decision, made in the first sixty seconds, is often where an avoidable multi-day delay actually starts, long before anyone opens a single supporting document.
02 · What actually belongs in a submission note that speeds approval?
| Element | Why it's there |
|---|---|
| Income and how it's calculated | Tells the underwriter what number to expect in the documents, and how a self-employed or variable-income figure was built |
| GDS/TDS at the qualifying rate | Confirms the file was checked against the stress test itself, not just eyeballed |
| LTV and the mortgage insurer, if applicable | Sets the risk frame before the underwriter reads a single supporting document |
| Explanation for anything unusual | One line per anomaly — a bureau inquiry, a co-signed debt, an address gap — so the underwriter isn't the one who has to notice it |
| Conditions the broker expects and has already gathered | Signals the file was packaged with the lender's standard conditions in mind, not assembled and hoped for |
Order matters as much as content. Leading with income and ratios, then LTV, then anomalies, then conditions mirrors the order an underwriter actually forms a judgment in — fit first, risk second, logistics last. A note that opens with a paragraph of narrative before any of those numbers appear forces the underwriter to read twice: once for the story, once to extract the figures they actually needed to triage the file in the first place.
Notes built to get a file read right the first time
Every submission goes out with a note calibrated to the lender reading it.
Treadstone's fulfillment associates package and write the submission note for every file, tuned to what each lender's underwriting desk actually scans for first.
03 · What mistakes actually slow a submission note down?
- →Burying the story below a restatement of every field already on the application form
- →Leaving an obvious anomaly — a large deposit, a recent job change, a co-signed loan — unaddressed and hoping it doesn't get noticed
- →Writing one generic note and sending it to every lender, instead of adjusting emphasis for what that lender's underwriting desk actually weighs
- →Explaining self-employed or variable income in the note without a number that ties back to the actual documents in the package
A note that hides a problem doesn't prevent the question — it just delays it. Whatever an underwriter would ask about anyway, they'll ask about after they've already lost confidence in the file, not before.
The generic-note mistake is the easiest one to fix and the one brokers fix last, mostly because it feels efficient to write one note and reuse it. It isn't efficient once the follow-up questions start — a note that doesn't address what a specific lender's desk is actually going to check first costs more time in back-and-forth than the extra ten minutes it takes to tailor the note before submission ever would have.
04 · How should a submission note change from one lender type to another?
An A-lender underwriter reading a high-volume queue wants the ratio summary tight and the anomaly explanations short — they're confirming fit against a standardized product, not evaluating the deal from scratch. A B-lender or alternative-lender underwriter typically wants more: a short paragraph on why the file doesn't fit prime criteria and what supports approving it anyway, since that's the actual underwriting question they're answering.
Private and MIC underwriting works differently again — equity position, exit strategy, and property marketability usually carry more weight in the note than the ratio summary does. The article on mortgage condition types by lender covers how that same lender-type variation shows up downstream, in what each lender actually attaches as a condition. Brokers who hand off packaging to Treadstone's fulfillment associates get a note calibrated to the receiving lender on every file, not just the ones with time to get it right.
Knowing which emphasis a given lender wants isn't something a broker has to guess at file by file — it's a pattern that repeats across a lender's underwriting desk, and it's worth keeping a running note on each lender relationship the same way a broker tracks turnaround times. A note built for the wrong emphasis rarely gets rejected outright, but it slows the read down exactly when speed is the whole point of writing one in the first place.
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.