Mortgage Broker Document Checklist: Validate the File

A Canadian mortgage broker needs, for each applicant, two pieces of identification, a job letter and recent pay stubs, the latest T4 and CRA Notice of Assessment, 90 days of bank statements for the down payment, and details of existing debts and the property. The checklist only pays off when each document is also checked for completeness, dates and agreement with the others. That second layer is what stops a file from being sent back by the lender's underwriter after submission.

This article is for informational purposes only and does not constitute legal, financial, or regulatory advice. Regulatory references are accurate as of the publication date. Consult a qualified professional for guidance specific to your situation.

What documents does a mortgage broker need from a client?

A broker needs identity, income, down payment, debt and property documents, and the income package changes between salaried, self-employed and commission clients. Each lender and mortgage insurer has its own list, but the core is the same across the country.

OSFI's Guideline B-20 requires federally regulated lenders to verify income and to qualify borrowers at the greater of the contract rate plus 2 percentage points or 5.25%, so the income documents in the file have to support that stress-tested calculation (OSFI Guideline B-20). Provincially regulated lenders and credit unions generally follow similar standards, and the broker's file is where the numbers are proven.

The Canada Revenue Agency issues the Notice of Assessment through its online account, and many lenders use it as the primary verification of declared income (CRA, notice of assessment). Always confirm the lender's own list before the client starts gathering.

How do you check that each document is complete?

A document is complete when every page is present and every field the underwriter needs is legible. Missing pages remain the top reason for a request for additional documents.

Run these checks on every upload:

1. All pages of bank statements. A statement that goes from page 1 of 4 to page 3 of 4 hides transactions the lender will want to see.
2. Complete job letter. It should state the position, start date, employment status (permanent, probation, contract), base salary and hours, and be signed on company letterhead.
3. Complete pay stub. Employer, employee, pay period, year-to-date earnings and deductions.
4. Full tax document. A T1 General without its Notice of Assessment is typically rejected.
5. Signed gift letter. It names the donor, the relationship, the amount, and states the funds are not to be repaid.

A tick against "NOA received" does not confirm that the income lines are visible. The check is whether the field is on the page.

Which dates and expiry rules cause rejections?

Dates cause rejections because lenders set freshness windows, and a file can fall outside them while the broker is still collecting documents. The file is clean at application and stale a month later.

• Pay stubs: usually the most recent 30 days at submission.
• Job letter: often dated within 30 days.
• Bank statements for the down payment: 90 days of history, so the file needs refreshing if the deal takes longer to firm up.
• Identification: unexpired at closing.
• Credit report: typically valid for 30 to 90 days depending on the lender.
• Condition dates: financing conditions in the purchase and sale agreement set the real deadline for the file to be clean.

Add a "stale by" date to the file: the oldest document date plus the lender's window. When the file passes it, it goes back to the client before it goes back to the lender.

Which cross-document checks do lenders run?

Cross-document checks compare the same fact across multiple documents, and a mismatch is what makes an underwriter stop. Each document can be correct on its own while the file contradicts itself.

The comparison of job letter salary, pay stub and T4 is the one that catches the most files. Our article on cross-document validation beyond OCR explains why reading each document alone misses these comparisons.

A comparison of fields shows that the file is consistent. It does not prove that any document is genuine and should never be presented as doing so.

What is the broker's own compliance load?

Mortgage brokers, lenders and administrators are reporting entities under the Proceeds of Crime (Money Laundering) and Terrorist Financing Act. FINTRAC supervises them and requires a compliance program, client identification, record keeping and reporting of suspicious transactions. Brokers are also licensed provincially, for example through FSRA in Ontario and BCFSA in British Columbia.

Personal information in the file is covered by PIPEDA for brokerages operating federally or across provinces, and by provincial laws where they apply. In Quebec, Law 25 adds consent, incident and privacy impact requirements.

On the funds side, the file should show where the down payment was, for how long, and who paid it in. Triggers for a closer look include a lump sum in the last month, funds from a third party or abroad, and proceeds from a sale without the statement of adjustments.

What do brokers and borrowers ask in forums?

Threads on r/PersonalFinanceCanada and r/canadianrealestate circle the same questions.

"My lender asked for more documents after the pre-approval. Why?" A pre-approval often relies on declared income and a credit pull. Full underwriting compares those statements with documents, so a mismatch that was invisible earlier appears now. Validating before the pre-approval is cheaper than answering requests afterwards.

"How old can pay stubs and job letters be?" Thirty days is common for both. Ask the lender and write the window in the file.

"Do I need to explain every deposit?" Not every one, but any deposit that is not a regular payroll credit and exceeds the lender's threshold needs a source.

"I just started a new job. Does that block the mortgage?" Often not, but the file changes: a signed offer or job letter, a first pay stub, and confirmation of probation status. Lenders treat probation differently, so check the criteria early.

A validation routine to run before every submission

Run the same four steps in the same order on every file so the result does not depend on who handles it.

1. Collect against the target lender's list, not a generic one.
2. Check completeness: pages, fields, signatures.
3. Check validity: dates against the lender's windows, ID expiry.
4. Check consistency: names, addresses, employers, income and down payment across the file.

A brokerage that submits dozens of files each month usually finds the first two steps work by eye and the fourth does not, since comparing six documents manually is the step that gets skipped. Automated extraction and comparison flags only the differences. For firms placing credit files, our financing and leasing solution describes the comparison, the pricing page shows cost per file, and the security page covers data handling. For the wider picture, read the industry verification guide; for the consumer credit equivalent, read income document validation before a credit decision.

Frequently asked questions

What is a mortgage broker document checklist?

It is the list of documents a broker collects before submitting a mortgage file: ID, income, down payment, debts and property documents. A good checklist also records the freshness window for each item so stale documents are caught early.

What documents do Canadian mortgage lenders require?

Typically two pieces of ID, a job letter, recent pay stubs, T4s and Notices of Assessment for two years, 90 days of bank statements for the down payment, and the purchase and sale agreement. Self-employed applicants add T1 Generals and business financials.

How many months of bank statements does a mortgage broker need?

Ninety days of history for the down payment is the common requirement. Some lenders also want three months of statements for the account where income is deposited.

How can a broker reduce back-and-forth with underwriters?

Check completeness, date validity and cross-document consistency before submission. Most requests trace to a missing page, an out-of-date pay stub or a deposit with no explanation.