The Debt Service Coverage Ratio (DSCR) in Commercial Lending: What Canadian Lenders Require

Published August 2, 2026

Most Canadian commercial lenders require a minimum 1.20x debt service coverage ratio (DSCR) — understanding how to calculate and optimize this ratio determines whether your deal gets funded.

What is Debt Service Coverage Ratio (DSCR)?

The debt service coverage ratio (DSCR) is a financial metric used by lenders to assess a borrower's ability to repay their loan. In the context of commercial lending, DSCR measures the cash flow available to cover annual mortgage payments.

How to Calculate Debt Service Coverage Ratio (DSCR)

To calculate DSCR in Canada, use the following formula:

Net Operating Income (NOI)Annual Mortgage Payment
NOI = Gross Operating Income - Operating ExpensesAnnual Mortgage Payment = Principal + Interest + Property Taxes + Insurance

The formula for DSCR is:

DSCR Formula
DSCR = NOI / Annual Mortgage Payment

DSCR Lender Minimum Requirements in Canada

Most Canadian lenders require a minimum DSCR of 1.20x for commercial mortgages. This means that the property's net operating income must be at least 120% of the annual mortgage payment.

LenderMinimum DSCR Requirement
Bank of Montreal (BMO)1.25x
Royal Bank of Canada (RBC)1.20x
Toronto-Dominion Bank (TD)1.25x
Canadian Imperial Bank of Commerce (CIBC)1.30x
Scotiabank1.20x

DSCR vs. Loan-To-Value (LTV) Ratio

The DSCR is different from the loan-to-value (LTV) ratio, which compares the mortgage amount to the property's appraised value.

  • DSCR focuses on cash flow and the borrower's ability to repay the loan.
  • LTV focuses on the equity in the property and the lender's risk exposure.

Both ratios are important, but DSCR is crucial for commercial mortgages because it directly assesses the property's income-generating potential.

Optimizing Your Debt Service Coverage Ratio (DSCR)

Tip: To improve your DSCR, consider increasing rental income or reducing operating expenses. You can also negotiate a lower interest rate or extend the amortization period to lower annual mortgage payments.

Here are some strategies to optimize your DSCR:

  1. Increase rental income by raising rents or improving occupancy rates.
  1. Reduce operating expenses by negotiating better contracts with vendors or implementing energy-efficient upgrades.
  1. Refinance your mortgage to secure a lower interest rate or extend the amortization period.

DSCR Requirements for Different Property Types

The minimum DSCR requirement can vary depending on the property type. Here are some general guidelines:

Property TypeMinimum DSCR Requirement
Multifamily1.20x - 1.35x
Office1.25x - 1.40x
Retail1.30x - 1.45x
Industrial1.25x - 1.40x
Hotel/Motel1.35x - 1.50x

DSCR for New Construction Projects

For new construction projects, lenders may require a higher DSCR to account for the increased risk and uncertainty. In some cases, lenders may also consider projected income based on market research or comparable properties.

Bottom Line: Key Takeaways

Understanding and optimizing your debt service coverage ratio (DSCR) is crucial for securing commercial financing in Canada. Here are the key takeaways:

  1. Calculate your DSCR using the formula NOI / Annual Mortgage Payment.
  1. Aim for a minimum DSCR of 1.20x to meet most lenders' requirements.
  1. Optimize your DSCR by increasing rental income, reducing operating expenses, or refinancing your mortgage.
  1. Be aware that DSCR requirements may vary depending on the property type and whether it's a new construction project.

By focusing on these key areas, you can improve your chances of securing the commercial financing you need to grow your real estate portfolio.

Reviewed for accuracy
Manbir Natt BCFSA Lic. #MB612411
Licensed mortgage broker · MBA, Rotman School of Management, University of Toronto

AI-generated content. This article was produced with AI assistance and reviewed for general accuracy. It is for informational purposes only and does not constitute financial, mortgage, or legal advice. Always consult a licensed mortgage professional before making any financial decisions.

This article is for informational purposes only and is not mortgage, financial, or legal advice. Speak with a licensed mortgage professional about your specific situation.

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