If you broker mortgages in Canada, three things decide whether a file moves smoothly: the right documents, a clear record of why you recommended the product, and a file you can still produce years later. This guide pulls those together. It covers the standard underwriting package, the regulator and insurer pages worth bookmarking, the 2024 rule changes that still shape files in 2026, and a practical way to keep it all organized.
TL;DR
- A standard Canadian underwriting package covers a signed application, proof of income (T4s, Notices of Assessment), credit and liabilities, down payment verification, the property and legal documents.
- In Ontario, FSRA expects brokerages to keep records for at least six years, including files that never funded. Insured lenders must keep files for as long as the insurance is in place.
- Collecting documents is not enough. Your file must show the rationale linking those documents to the product you recommended.
- The stress test (minimum qualifying rate) and the December 2024 insured mortgage changes affect which documents and calculations a file needs.
- Software can classify and extract documents, but you still own the judgment and the file.
Table of Contents
- What underwriting documentation looks like in Canada
- The rules behind the paperwork
- Compliance: the file is the evidence
- Building a submission package underwriters accept
- Our perspective: where the hours actually go
- Where Autowrite fits
- Frequently asked questions
- Sources
What underwriting documentation looks like in Canada
Underwriting is the lender's assessment of risk on a borrower and a property. Whether the lender is a bank, a monoline, a credit union or a private lender, the evidence it asks for falls into the same buckets. Sagen's underwriting documentation page is a useful reference because it lists what an insured lender is expected to hold on file: a signed application and borrower consent, loan summary, underwriting notes, the MLS listing, purchase and sale documentation, income confirmation, credit and liability documentation, assets and down payment, and appraisal or final inspection.
Here is how that translates into a broker's working checklist.
| Bucket | Typical documents | What the underwriter is checking |
|---|---|---|
| Identity and application | Signed application, consent, two pieces of ID | Who the borrower is and that they agreed to the credit check |
| Income | Employment letter, recent pay stubs, T4s, Notices of Assessment (NOAs), T1 Generals for self-employed borrowers | Stable, verifiable, repeatable income |
| Credit and liabilities | Credit bureau report, statements for loans, lines of credit and cards | Debt servicing ratios and payment behaviour |
| Down payment | 90 days of bank statements, RRSP or TFSA statements, sale proceeds, gift letter | Source, seasoning and ownership of funds |
| Property | Purchase and sale agreement, MLS listing, appraisal, property tax bill, condo documents | Value, marketability and condition |
| Legal and closing | Solicitor conditions, commitment, insurance, final reports | Clean title and conditions met |
The 90-day statement window is a common lender convention rather than a federal rule, so always confirm against the specific lender's commitment conditions.
Income documents: T4s, NOAs and what they do not tell you
Lenders typically ask for Canadian tax documents as proof of income. The Canada Revenue Agency's consultation report on a potential income verification tool describes the proofs lenders usually request: a proof of income statement, tax information slips and a notice of assessment. The same report records that participants wanted verified documents to stay on file for compliance purposes, and were cautious about simple yes or no verifications that lack the detail needed to build a file.
The practical lesson: even if tools make income checks faster, you still need the underlying T4, NOA or T1 General in the file, and you still need to reconcile them to the pay stubs and the application.
For self-employed borrowers, expect to compare several years of T1 Generals and NOAs, check for balances owing to the CRA, and read the numbers for trends, not just a single year.
Down payment documents
Down payment verification is where files stall most often. Traditional savings need a statement history that shows the balance building up. Large deposits need an explanation and a paper trail. Gifted funds need a signed letter from an eligible donor confirming that nothing is repayable. Our own guide to gift letter requirements for Canadian mortgage brokers walks through what the letter must say, and our piece on down payment analysis covers how to trace funds across accounts.
Borrowers new to Canada or with thin credit files
Some files do not fit the standard bucket. Sagen's New to Canada Program lets qualified newcomers buy with as little as 5% down, and where there is no sufficient Canadian credit report, alternative evidence is used. Research on underwriting guidance points to items such as international credit reports covering 12 months, or six to 12 months of consistent bank statements showing payment behaviour.
The same logic applies to borrowers with a troubled credit past. If a client has gone through a consumer proposal, a plain checklist of the steps and timelines, such as this consumer proposal overview from a Canadian accounting firm, helps you understand where they are in the process and what discharge paperwork to request before you submit.
The rules behind the paperwork
The stress test and OSFI Guideline B-20
For uninsured mortgages at federally regulated lenders, OSFI's minimum qualifying rate is the greater of the Bank of Canada five-year benchmark rate or the contract rate plus 2%. Your file should show the qualifying rate used, the resulting payment, and the ratios that came out of it.
OSFI's Superintendent has also described B-20 as the foundation of lender risk management, with an expectation that loan-to-value limits respond to market conditions. For brokers, this means lender policies will keep moving, and your documentation habits need to be consistent enough to adapt.
The December 2024 insured mortgage changes
On December 15, 2024, the federal government raised the insured mortgage price cap from $1 million to $1.5 million. The Department of Finance backgrounder also confirms that 30-year amortizations apply to insured mortgages where the borrower is a first-time homebuyer or is buying a newly constructed home.
What that changes in the file:
- Record whether the borrower qualifies as a first-time buyer or is purchasing a new build, since that is what unlocks the longer amortization.
- Keep the purchase agreement or builder documents that show the property is newly constructed.
- Show the down payment calculation for homes over $1 million, because the minimum is tiered.
- Document why the longer amortization suits the client, which brings us to suitability.
Check current lender and insurer policies before you submit, as they can differ from the federal rules.
Compliance: the file is the evidence
Ontario record retention
FSRA states that a mortgage brokerage must keep records for at least six years after the expiry of the mortgage term or renewal, or the completion or expiry of the transaction. This includes transactions that were started but did not fund or close. FSRA cites Ontario Regulation 188/08 for these standards.
It also stretches beyond tidy PDFs. In its guidance on keeping good records, FSRA covers emails, notes and messages. If an agent uses personal email or a messaging app for client business, the brokerage needs controls and safeguards so those records stay accessible and protected. Counting on an agent to hand them over later is a risk.
If you work across provinces, retention periods and regulators differ, and federal rules can apply on top. We compare the two common figures in FINTRAC five-year versus FSRA six-year retention. Check with your own regulator and principal broker for the rule that governs your licence.
Suitability: the gap most files have
FSRA's Show your work guidance frames documentation as evidence that the mortgage is suitable for the client. A file can hold every T4 and bank statement and still fall short if nothing records why you chose that product, that lender, that term or that amortization.
A short suitability note should answer:
- What did the client tell you about their goals, timeline and risk tolerance?
- Which options did you consider and why did you rule others out?
- How do the documents on file support the recommendation?
- What did you disclose, and when?
Our walkthrough of three proofs Ontario brokers must keep on file goes deeper on this, and audit trails for mortgage brokers shows how to build a complete record as the file develops, not at the end.
Insurer retention
For insured mortgages, Sagen expects lenders to keep supporting documentation for as long as coverage is in place, which can be many years. That means your submission package is not a one-time handoff. The lender relies on it, and may come back to it.
Building a submission package underwriters accept
A clean package reduces conditions and back and forth. A reliable routine looks like this:
- Collect against a checklist. Start from the lender's requirements, not a generic list.
- Name and sort documents on arrival. A file called "scan0042.pdf" costs time later.
- Check for completeness and consistency. Do the names, addresses and employer details match across documents?
- Reconcile the numbers. Compare income to the application, and trace the down payment to its source.
- Write the rationale. Add your suitability note while the conversation is fresh.
- Submit once, cleanly. Send the package in the order the underwriter reads it.
- Retain everything. Keep the final file, conditions and communications for the required period.
We set out the contents of a strong package in seven core documents for an OSFI and FSRA ready submission, and the intake-to-retention flow in five steps from lender requests to retention. For digital records, see audit-ready digital compliance records.
Privacy and data residency
Mortgage files hold sensitive personal information. Whatever tools you use, you need to know where client data is stored and who can access it. Our PIPEDA checklists for mortgage brokers give a practical starting point for brokerage owners.
Our perspective: where the hours actually go
We built Autowrite for Canadian brokers because the paperwork, not the advice, eats the day. A typical file arrives as a pile: PDFs, phone photos of pay stubs, forwarded emails, statements in different formats. Sorting that pile, keying numbers into forms and assembling packages is repetitive work, and it is where mistakes creep in.
Two beliefs shape how we build.
First, extraction should show its confidence. A tool that quietly guesses at a number is a liability, because the regulator and the lender will ask what the document said. That is why we surface line-level confidence on extracted data, so you can see which figures to verify before they reach a form.
Second, automation should strengthen the file, not replace the broker's judgment. The regulator's message is that the rationale matters as much as the paper. Software can classify documents, pull data, fill underwriting forms and assemble e-sign and compliance packages. It cannot decide what is suitable for your client. That stays with you.
We also keep Canadian data residency and Canadian document types at the centre, so the workflow matches how Canadian brokerages actually operate.
— Anant Bawa
Where Autowrite fits
Autowrite is an operating system for Canadian mortgage brokers that handles document intake, classification and data extraction, auto-fills underwriting forms, syncs with mortgage software, assembles e-sign and compliance packages, and supports income and down payment analysis and team pipeline management. Plans are Starter at $99 per month, Pro at $199 per month and Legend at $399 per month, and Enterprise is available on request. Additional deals cost $20 each, and pay as you go is $35 per deal. Paid plans come with a 14-day free trial, so you can test it on live files.
Frequently asked questions
What documents are needed for mortgage underwriting in Canada?
Expect a signed application and consent, proof of income such as T4s and NOAs, credit and liability documents, down payment verification, the purchase agreement, and an appraisal where required. Lenders may add conditions, so always check the commitment. Insured lenders also keep underwriting notes and legal documents on file.
Does Canada have manual underwriting?
Canadian policy does not treat manual underwriting as a standard category. Underwriting is driven by lender and insurer guidelines and by OSFI expectations on qualifying rates and loan-to-value limits. Individual lenders can still review exceptions case by case, with extra documentation.
How long do I have to keep mortgage files?
In Ontario, FSRA requires brokerages to retain records for at least six years after the term expires or the transaction completes or expires, including unfunded files. Other provinces and federal requirements may differ, so confirm with your regulator and principal broker.
What changed for mortgage rules in 2024 that still matters?
The insured mortgage price cap rose from $1 million to $1.5 million, and 30-year amortizations became available on insured mortgages for first-time buyers and buyers of new builds. Your file should show how the client qualifies for those features.
Sources
- Mortgage brokerage and administrator records management and up-front fees, FSRA
- Keep good records to protect your reputation, FSRA
- Show your work: documenting that a mortgage is suitable for your client, FSRA
- Underwriting Documentation, Sagen
- New to Canada Program, Sagen
- Minimum qualifying rate for uninsured mortgages, OSFI
- Superintendent fireside chat with Mortgage Professionals Canada, OSFI
- Delivering the Boldest Mortgage Reforms in Decades, Department of Finance Canada
- Boldest mortgage reforms in decades come into force today, Department of Finance Canada
- Mortgage Industry Consultation on a Potential Income Verification Tool, Canada Revenue Agency