Most buy and hold real estate investors agree that cash flow is the ultimate goal. To calculate cash flow, you take the NOI and subtract it by the Debt Service.
NOI - Debt Service = Annual Cash Flow
See how the cash flow is calculated for Pheasant Run in Harrisonburg. Click here for available properties.

This is a continuation of a serious entitled: The Top 10 Terms of Commercial/Investment Real Estate.
Cash Flow Calculations Source:
http://www.harrisonburginvestmentproperties.com/pheasant-run/