What Debt service coverage ratio (DSCR) means
A DSCR above 1.00 means modeled NOI exceeds annual debt service. A result below 1.00 means operations do not fully cover the scheduled payments under the assumptions used.
Confirm the lender's definition. Some underwriters adjust NOI, require replacement reserves, or calculate debt service using a stressed interest rate.
DSCR is a coverage measure, not a profit margin. It does not show acquisition cash or future capital needs.
DSCR example
- Annual NOI: $24,000
- Annual debt service: $18,000
Result: $24,000 / $18,000 = 1.33x DSCR.
When investors use it
- Sizing income-property debt
- Testing loan resilience
- Comparing lender scenarios
- Finding how much NOI can decline before debt is uncovered
Common mistakes
- Using gross rent instead of NOI
- Using a monthly numerator with annual debt service
- Ignoring an adjustable-rate reset
- Assuming every lender uses the same minimum or NOI adjustments
Frequently asked questions
What does 1.25x DSCR mean?
It means modeled NOI equals 125% of scheduled annual debt service, leaving a 25% coverage margin before other below-NOI items.
Can a property have positive cash flow and weak DSCR?
Definitions and omitted reserves can create differences, but consistently calculated positive pre-tax cash flow normally corresponds with DSCR above 1.00.
How can DSCR improve?
Higher durable income, lower operating expenses, a smaller loan, a lower interest rate, or a longer amortization can improve coverage. Each change carries its own tradeoffs.
This guide is educational and does not provide investment, lending, tax, legal, or appraisal advice. Verify inputs and requirements for the specific property, lender, and jurisdiction.
Put the metric inside a complete deal.
PropLurk keeps acquisition inputs, financing, expenses, returns, and the decision record together.