Debt Service Coverage Ratio Calculator

Compare net operating income with annual principal and interest obligations

Your result will appear here.

About the Debt Service Coverage Ratio Calculator

Debt service coverage ratio compares cash available for debt payments with the required principal and interest payments over the same period. Lenders and property investors use it to judge how much cushion exists above scheduled debt service.

The numerator can be defined differently depending on the context, such as net operating income for real estate or a cash-flow measure for a business. The definition should match the lending agreement or analysis.

How to Use the Debt Service Coverage Ratio Calculator

  1. Enter the cash-flow or NOI amount used by the chosen DSCR definition.
  2. Enter total required debt service for the same period.
  3. Calculate the ratio.
  4. Compare the result with the lender’s actual covenant definition rather than assuming every DSCR uses the same numerator.

How the Calculation Works

DSCR = cash available for debt service ÷ required debt service.

A ratio of 1.0 means the modeled cash amount exactly equals scheduled debt payments. A ratio above 1 provides a cushion, while a ratio below 1 indicates the modeled cash amount is insufficient.

Worked example

Debt Service Coverage Ratio Calculator Worked Example

$150,000 NOI and $120,000 annual debt service

DSCR = $150,000÷$120,000 = 1.25.

Result guide

Understanding Your Debt Service Coverage Ratio Calculator Result

A DSCR of 1.25 means the modeled cash measure is 1.25 times the required debt service, or about 25% above it. It does not guarantee liquidity if cash timing is uneven.

Before you rely on the answer

Assumptions and Limitations

  • Numerator and debt service cover the same period.
  • The numerator follows the required business or lender definition.
  • Scheduled debt service includes the relevant principal and interest obligations.

Practical tip

Using This Result in Practice

Review monthly cash timing when debt payments are uneven or the business is seasonal. A healthy annual DSCR can still hide periods where cash is tight.

Related calculations

Useful Calculations to Continue With

If the objective is comparing operating cash flow with current liabilities rather than scheduled debt payments, use the Operating Cash Flow Ratio Calculator.

If annual or monthly debt service still needs to be calculated from loan terms, use the Loan Payment Calculator.

Common questions

Debt Service Coverage Ratio Calculator FAQ

What does DSCR above 1 mean?

The defined cash measure exceeds scheduled debt service for the period.

What does DSCR below 1 mean?

Modeled cash available is less than required debt service.

Is NOI always used for DSCR?

No. Real-estate analysis often uses NOI, while business lending may use other cash-flow definitions.