DEPRECIATION, DEPLETION AND AMORTIZATION
DEPRECIATION: The term depreciation is used with reference to tangible fixed assets because the permanent continuing and gradual fall in book value is possible only in the case of fixed asset.
DEPLETION: The term depletion is used for the depreciation of wasting assets (natural resources) such as mines, oil wells, timber trees etc.Though land is a natural resource, but it is not depreciated because land is assumed to have an unlimited useful life.
AMORTIZATION: The term amortization is used in respect of intangible assets like patents, copyrights, leasehold and goodwill which are recorded at cost. Some intangible assets have limited useful life and are, therefore, written off. The process of their writing off is called amortization.
