This document provides an overview of depreciation accounting. It defines depreciation as the permanent decrease in the value of an asset due to factors like wear and tear, obsolescence, or the passage of time. The document outlines various causes of depreciation including wear and tear, exhaustion, effluxion of time, weather effects, and permanent declines in asset value. It also discusses objectives of recording depreciation such as correctly calculating profits, complying with legal requirements, and maintaining the integrity of capital. Finally, the document introduces different depreciation methods used in accounting like the straight-line method, declining balance method, and annuity method.