Depreciation

• abstract: In economics, depreciation is the gradual decrease in the economic value of the capital stock of a firm, nation or other entity, either through physical depreciation, obsolescence or changes in the demand for the services of the capital in question. If capital stock is C_0 at the beginning of a period, investment is I and depreciation D, the capital stock at the end of the period, C_1, is C_0 + I - D.

以上来源于: WordNet