More money, structured right: rental and investment mortgages in Ontario

How lenders count rental income

If you're buying a first rental, own a home with a rental unit, or are adding a property, the first question is how much of the rent a lender will count. For a mortgage insured by CMHC, the insurer's rules are published (source: CMHC, checked October 2026):

• A home you live in, with two units: up to 100% of the gross rent from the second unit may be added to your income.
• A home you live in, with three or four units: up to 50% of the gross rent may be added to your income, or a net approach is used.
• A one-unit rental you don't live in: not eligible for mortgage loan insurance.
• Rental properties you already own, other than the one being financed: a net approach, where operating expenses come off the rent and the property's principal, interest, taxes and heat are either deducted from the rent or counted as a debt. A property that loses money adds to your debts in the calculation.

For a rental you won't live in, insurance generally isn't available, so the mortgage is uninsured and generally needs at least 20% down. Lenders then set their own rules. Many lenders add a share of the rent to your income or offset a share of the rent against the property's costs. The share and the method vary by lender. More in does rental income count when I qualify and down payment for a rental.

A worked example with rent from a basement unit

The figures are illustrative, not a quote.

You buy a home with a basement unit and live upstairs, with a CMHC-insured mortgage. The basement rents for $2,000 a month.

1. Rent a year: $2,000 × 12 = $24,000.
2. Added to your income: for a two-unit home you live in, up to 100%, so up to $24,000.
3. What the added rent does to the limit: CMHC's limit on housing costs (principal and interest at the qualifying rate, property tax, heating and half of any condo fees) is 39% of gross income (source: CMHC, checked October 2026). $24,000 × 39 ÷ 100 = $9,360 a year, about $780 a month, of extra room for housing costs. That extra room holds only if your total debts still fit the 44% limit. The extra room is not an approval: the mortgage is still subject to lender approval.

Does the property carry itself?

Lenders often check whether a rental's rent covers its own costs (a coverage check). A property that doesn't carry itself generally reduces what you can borrow elsewhere. The tool below shows the monthly cash flow, a coverage read, and how lenders generally treat the rent.

The tool shows cash flow, not returns. Whether to buy for cash flow or for a rise in value depends on forecasts we don't make, so that choice is a question for your financial advisor.

Using the equity in your home

A second property often starts with a home equity line of credit (HELOC) on the first. With federally regulated lenders, the revolving HELOC portion can reach 65% of the home's value, and the HELOC plus any amortizing mortgage on the home 80% (source: OSFI, checked October 2026). The stress test applies when you refinance or take a HELOC (source: Financial Consumer Agency of Canada, checked October 2026).

A HELOC is generally a demand loan, so the lender can review or reduce the limit. Whether the interest on borrowing for a rental is tax-deductible is a question for your accountant. The HELOC room tool estimates the limit, and a HELOC for a rental down payment covers the trade-offs.

Choosing the term as a rental investor

If you might sell, or refinance to buy the next property, within the term, the penalty can matter more than the rate. On a fixed mortgage the penalty is usually the higher of three months' interest or the interest rate differential (source: Financial Consumer Agency of Canada, checked October 2026). On a variable mortgage the penalty is commonly three months' interest. A shorter term keeps the next move open.

How we plan the borrowing with you

We start with the plan: how many properties, in what order, and which you'll live in. Then we set out what each kind of lender generally counts and where the borrowing room is likely to run out. Planning in that order keeps the first mortgage from blocking the second. Everything is subject to lender approval.

When a bank reaches its limit on rental properties

Some banks limit how many financed properties they will lend on. Past that limit, other banks, credit unions and monoline lenders (mortgage-only lenders) come first. Next is an alternative lender where one fits, generally at different terms and often for one to two years. If a short gap needs closing, the last step is a short private bridge from Stonefield Capital, our private-lending brand, with a written plan back to a bank.

Sources

• CMHC — Rental Income, published 2024-05-22, checked 2026-10-26.
• CMHC — Calculating GDS and TDS, checked 2026-10-23.
• OSFI — Treatment of innovative real-estate secured lending products under Guideline B-20, checked 2026-10-23.
• Financial Consumer Agency of Canada — Preparing to get a mortgage, checked 2026-10-23.
• Financial Consumer Agency of Canada — Mortgage fees: Prepayment penalties, page dated 2025-10-15, checked 2026-10-26.

What to do next

Run your numbers through the rental cash-flow tool, then use the call-back form to talk through the structure with a person. If your bank has already made you an offer, start at can your bank do better?