Noun. 1. specific heat-the heat required to raise the temperature of one gram of a substance one degree centigrade. heat, heat energy-a form of energy that is transferred by a difference in temperature. 1  Facebook.
You begin to depreciate your property when you place it in service for use in your trade or business or for the production of income. You stop depreciating property either when you have fully recovered your cost or other basis or when you retire it from service, whichever happens first.
You do this by depreciating the property; that is, by deducting some of the cost each year on your tax return. Three factors determine how much depreciation you can deduct each year: (1) your basis in the property, (2) the recovery period for the property, and (3) the depreciation method used. You cannot simply deduct your mortgage or principal payments, or the cost of furniture, fixtures, and equipment, as an expense.