Rental property mortgage rules in Canada

What Canadian real estate investors need to know about down payments, rental income qualification, DSCR, and financing multiple properties in 2025.

Buying a rental property in Canada comes with a completely different set of mortgage rules than buying a primary residence. Lenders treat investment properties as higher risk, which means stricter down payment requirements, different income calculations, and tighter qualification rules. This guide covers everything Canadian real estate investors need to know before applying for a rental property mortgage in 2025.

The most important rule — 20% minimum down payment

Unlike a primary residence where you can put as little as 5% down, rental properties in Canada require a minimum 20% down payment with no exceptions. See our minimum down payment guide for the full breakdown of how down payment rules differ for owner-occupied homes.

This means:

• CMHC mortgage insurance is not available for rental properties
• You must have the full 20% from your own funds or existing equity
• On a $600,000 rental property you need at least $120,000 down
• On a $800,000 rental property you need at least $160,000 down

Why 20%? Lenders consider rental properties higher risk because if a tenant stops paying or the property sits vacant, the borrower is more likely to default. The larger down payment protects the lender and gives you equity buffer from day one.

Higher interest rates for rental properties

Rental property mortgages carry higher interest rates than primary residence mortgages in Canada. The premium is typically 0.10% to 0.20% higher, and some lenders charge up to 0.50% higher depending on the property type.

On a $500,000 mortgage a 0.20% rate premium adds approximately $83 per month and over $24,000 in additional interest over a 25-year amortization. This is a real cost investors must factor into their cash flow calculations before purchasing.

How lenders calculate rental income for qualification

This is where rental property mortgages get complicated. Lenders do not count 100% of your rental income when calculating your qualification. Each lender has its own approach but the two most common methods are:

Method 1 — Rental offset (most common at major banks)

The lender takes a percentage of your expected rental income and uses it to offset your housing costs. Most major Canadian banks use 50% to 80% of gross rental income as an offset.

Example:

• Expected monthly rent: $2,500
• Bank uses 80% = $2,000 offset
• This $2,000 reduces your TDS ratio calculation
• It does not count as direct income — it reduces your debt load

Method 2 — Add-back method

Some lenders add a portion of rental income directly to your qualifying income. This can increase your maximum borrowing amount significantly but fewer lenders use this approach for first investment properties.

Example:

• Expected monthly rent: $2,500
• Lender adds 80% = $2,000 to your monthly income
• Your qualifying income increases by $24,000 annually
• This directly increases your maximum mortgage amount

Which method gets you more?

The add-back method results in a higher qualifying amount. If you are borderline on qualification, shopping lenders who use this method can make a significant difference. A mortgage broker can identify which lenders use which method for your specific situation. Our affordability guide walks through how GDS and TDS ratios are calculated in the first place.

Important: Lenders typically require proof of rental income through a signed lease agreement or, for existing properties, two years of T1 tax returns showing rental income on Schedule L.

The stress test still applies to rental properties

The OSFI stress test applies to all mortgages at federally regulated lenders, including rental properties. You must qualify at whichever is higher:

• Your actual contract rate + 2%, OR
• 5.25% (the OSFI minimum qualifying rate)

For rental properties this is even more impactful because your qualifying income may already be limited by how the lender counts rental income. The stress test then applies on top of that, further reducing your maximum borrowing amount.

Qualifying with multiple properties

If you already own one or more properties with mortgages, qualifying for additional rental properties becomes progressively harder.

All existing mortgages count in your TDS

Every mortgage you carry shows up in your Total Debt Service ratio calculation. If you have a primary residence mortgage and one rental property mortgage, both are counted against your income when you apply for a third property.

Rental income from existing properties helps partially

If your existing rental properties are generating income, lenders will count a portion to help offset the mortgage costs. However they typically only count 50–80%, so properties that appear cash flow neutral on paper may actually hurt your qualification.

Portfolio lenders become important at 5+ properties

Most major banks have an informal limit of 4–5 financed properties per borrower. Beyond that you typically need to work with portfolio lenders or alternative lenders who specialize in investor financing. These lenders use different qualification models — often based on the property's cash flow rather than your personal income — but charge higher rates.

DSCR — the ratio serious investors need to understand

Debt Service Coverage Ratio (DSCR) is the key metric alternative lenders and portfolio lenders use to evaluate rental properties. It measures whether the property generates enough rental income to cover its own mortgage payments.

DSCR formula:

Gross monthly rental income ÷ total monthly mortgage payment (principal + interest + taxes + insurance) = DSCR

What lenders want to see:

• DSCR of 1.0 = rental income exactly covers mortgage costs (breakeven)
• DSCR of 1.10 = rental income is 10% above mortgage costs
• DSCR of 1.25 or higher = strong positive cash flow — most portfolio lenders prefer this
• DSCR below 1.0 = property is cash flow negative — very hard to finance

Example:

• Monthly rent: $2,800
• Monthly mortgage + tax + insurance: $2,400
• DSCR = 2,800 ÷ 2,400 = 1.17
• This property meets most lenders' minimum DSCR requirement

Using existing home equity to fund your rental property down payment

One of the most common ways Canadian investors fund their 20% down payment is by accessing equity in their primary residence through a Home Equity Line of Credit (HELOC) or refinance.

How it works:

• You refinance your primary residence up to 80% of its appraised value
• The additional funds are used as the down payment for the rental property
• You now carry two mortgages — one on your home and one on the rental

Important consideration: Using borrowed funds as your down payment increases your overall debt load significantly. Lenders will see both the HELOC payments and the new rental mortgage in your TDS calculation. Make sure the rental income realistically covers enough of the new mortgage to keep your TDS within acceptable limits.

Short-term rentals — the mortgage rules are different

If you plan to operate the property as a short-term rental on Airbnb or VRBO rather than a long-term rental, be aware that:

Most lenders treat short-term rental income differently: Many major banks will not count Airbnb income at all for qualification purposes, or require a 2-year history of income reported on your tax returns.

Some municipalities have banned short-term rentals: Toronto, Vancouver, and other major cities have strict regulations. Operating an unauthorized short-term rental can void your insurance and violate your mortgage terms.

Specialist lenders exist: Some lenders specifically underwrite short-term rental properties using platforms like AirDNA to verify income. They typically charge higher rates.

Key tax considerations for rental property investors

While this is not tax advice, these are the rules every investor should understand:

Rental income is taxable: All net rental income after expenses is added to your personal income and taxed at your marginal rate.

Deductible expenses include: mortgage interest (not principal), property taxes, insurance, repairs and maintenance, property management fees, advertising, and a portion of utilities if you pay them.

Capital gains on sale: When you sell a rental property the capital gain is taxable at a 50% inclusion rate. This is a significant difference from selling your primary home, which is typically tax-free under the principal residence exemption.

Always consult a CPA who specializes in real estate before purchasing a rental property.

Calculate your rental property numbers before you buy

Before making an offer on any rental property, run the full numbers first. Use Smart Mortgage Calculator — paste the Realtor.ca or MLS listing URL and get an instant breakdown of the mortgage payment, property tax estimate, and total monthly carrying costs. Then compare that to the realistic rental income for the area to see if the property cash flows.

Frequently asked questions

Rental property mortgage rules and rates change frequently. This article reflects rules as of May 2025. Always consult a licensed mortgage broker and a qualified accountant before purchasing an investment property.