Cash flows in the context of "Tax shield"

In finance, return is a profit on an investment. It comprises any change in value of the investment, and/or cash flows (or securities, or other investments) which the investor receives from that investment over a specified time period, such as interest payments, coupons, cash dividends and stock dividends. It may be measured either in absolute terms (e.g., dollars) or as a percentage of the amount invested. The latter is also called the holding period return.

A loss instead of a profit is described as a negative return, assuming the amount invested is greater than zero.

In accounting, an impaired asset is an asset which has a market value less than the value listed on its owner's balance sheet.

According to U.S. accounting rules (known as US GAAP), the value of an asset is impaired when the sum of estimated future cash flows from that asset is less than its book value. At this point an impairment loss should be recognized, which is done by taking the difference between the fair market value (FMV) and the book value and recording this amount as the loss. This basically records the asset as if it were being acquired brand new at its FMV, recording this as its new book value. This is a common occurrence for goodwill where a company will purchase a target company for more than the value of its net assets. Under US GAAP, goodwill is tested annually for impairment.