Can a business owner use a readvanceable mortgage? (Canada)

Yes: in Canada, a business owner can generally use a readvanceable mortgage and draw on its line for business needs, within the same limits as any other borrower and subject to lender approval. A readvanceable mortgage combines an amortizing mortgage and a home equity line of credit (HELOC) under one registration on the home. Whether using the line for the business has any tax effect, including whether the interest is deductible, is a question for your accountant; we do not give tax advice.

Our part is the mortgage structure: the limits, how it is set up and the discipline it takes.

How a readvanceable mortgage works, briefly

Our page on what a readvanceable mortgage is explains the mechanics. In short, the lender registers one charge on your home, and inside it sit an amortizing mortgage and a revolving line. As your payments repay mortgage principal, that amount can become available on the line, up to the overall limit.

The limits on a readvanceable mortgage

With a federally regulated lender, the revolving line can be no more than 65% of your home's value, and the mortgage and line together no more than 80% (sources: OSFI and the Financial Consumer Agency of Canada, checked October 2026). The stress test applies when you take a HELOC (source: Financial Consumer Agency of Canada, checked October 2026). So you qualify on the income lenders count, which for an owner is often well below the business's revenue. See how lenders count self-employed income.

The line is generally a demand loan: the lender can review or reduce the limit. It is safer not to plan the business around the limit always being there.

Structure for a business owner

• A separate portion for the business. Many readvanceable products let you split the borrowing into several portions. Keeping business draws in their own portion shows what the business owes the household and gives your accountant a clear record to work from.
• The charge type. Readvanceable mortgages generally sit on a collateral charge, often registered for more than you borrow. A collateral charge can make switching lenders at renewal more involved.
• The rate. The line is usually variable, moving with the lender's prime, and many lines allow interest-only payments.

A worked example of where the discipline matters

Illustrative, not a quote. Your home is valued at $800,000.

1. Overall limit: 80% × $800,000 = $640,000. Line cap: 65% × $800,000 = $520,000.
2. Starting point: you owe $460,000 on the mortgage, so the line's room is $640,000 − $460,000 = $180,000.
3. The business draws $60,000. Total owed: $460,000 + $60,000 = $520,000.
4. A year later, suppose your payments have repaid about $14,000 of principal (illustrative; the real figure depends on your rate and amortization). The mortgage is $446,000 and the line's room rises to $640,000 − $446,000 = $194,000.

Now two paths:

• The business redraws the $14,000: the line is $74,000, and total owed is $446,000 + $74,000 = $520,000, exactly where you started.
• The business does not redraw: total owed is $446,000 + $60,000 = $506,000.

On the first path, the mortgage statement shows progress while the household owes the same. The trade-off of a readvanceable mortgage is that the room comes back automatically, so you have to decide on purpose not to use it.

Discipline that keeps the line in check

• A cap below the lender's limit. Ask the lender whether the line can be set lower than the maximum.
• A repayment plan for each draw, agreed before the money goes out.
• Watch the total owed, mortgage plus line, not the mortgage balance alone.
• Revisit at each renewal, when the structure and the lender can change without a penalty.

What to do next

Estimate your room with the HELOC room tool. Results are estimates only, not an offer or advice. Or use our call-back form, and we'll walk through how a readvanceable structure would sit with your business, with your accountant's answers in hand.