Mortgage Income Verification: What You Must Prove

By Hami Tahm · Last reviewed July 2026

What income lenders accept

Lenders sort income by how predictable and provable it is:

• Salaried employment is the most straightforward — a guaranteed base salary counts at face value.
• Hourly income counts fully when hours are guaranteed; with variable hours, lenders average your earnings, commonly over about two years.
• Commission, bonus, and overtime are usually accepted as a multi-year average rather than your latest year alone — two years is the most common look-back, though some lenders use longer or decide case by case.
• Self-employment income is generally assessed from your CRA-verified reported income (Notices of Assessment, plus business financials). That's usually closer to net income than gross revenue — though insured programs allow adjustments, such as CMHC's permitted gross-ups or add-backs of certain expenses for sole proprietors.
• Contract and part-time work typically needs a track record; income from a contract with no guaranteed renewal may be discounted.
• Other income — pensions, rental income, or government benefits — can often be included under program-specific rules. Rental income, for example, ranges from partial inclusion to full inclusion depending on the property and program.

Two situations lenders treat cautiously: a probation period (many prefer it completed, or may discount the income) and any income with no documentation trail. Alternative and private lenders may work with less conventional proof, at a higher rate.

The documents you'll be asked for

A typical verification package looks like this — not every lender needs all of it, but expect requests from this list:

• Employment letter on company letterhead — position, start date, salary or hourly rate and guaranteed hours; lenders often confirm it directly with the employer.
• Recent pay stubs (usually the last one or two).
• T4 slips — often the last two years, especially where income is variable.
• CRA Notices of Assessment — commonly the last two years; the NOA is the CRA's record of the income you reported and the result of your assessment, which is why lenders treat it as the anchor document for variable and self-employed income.
• If self-employed: T1 Generals with statements of business activities, and where applicable incorporated-business financials or articles of incorporation.

For federally regulated lenders, OSFI's underwriting guideline (B-20) sets the principle: income should be verified for both its amount and its sustainability, and income that can't be independently verified should be treated cautiously.

Where this fits in qualifying

Verified income is one of the three pillars lenders assess, alongside your down payment and credit. To see what your verified income translates into, run the Mortgage Qualifier.

How much income a given purchase price requires: Income Needed for a Mortgage in Canada. For the full qualifying process: How to Qualify for a Mortgage in Canada.

Frequently Asked Questions

Sources

• OSFI — Guideline B-20: residential mortgage underwriting (income verification principles, federally regulated lenders)
• FCAC — Getting pre-approved and qualifying for a mortgage (documents lenders ask for)
• CMHC — Self-employed borrowers (income assessment flexibilities)
• CRA — Understanding your Notice of Assessment