This document discusses depreciation accounting standards in India. It defines depreciation as the wearing out, consumption or loss of value of an asset due to use, time, or obsolescence. Depreciable assets have a limited useful life. The document outlines the causes and needs for depreciating assets, and factors to consider such as cost, useful life, and residual value. It describes common depreciation methods like straight-line and written down value, and notes disclosure requirements for depreciation policies in financial statements.