Cash earnings generated from a real estate investment or property. Cash earnings equals cash revenue less cash expense. The cash earnings may or may not be discounted to its present value by using a present value of $1 table depending on the user's needs and perspective. An example is a prospective buyer of an apartment house or office building who estimates the cash earnings to be generated by considering cash rentals to be received and cash expenses associated with the rental property. In so doing, the prospective owner can estimate what price to pay for the property.