The workload depreciation method is applicable to transportation companies and some large value and infrequently used building construction equipment, according to the actual workload to calculate depreciation, the amount of depreciation in each period with the workload changes. The formula is, the unit workload depreciation amount = original value of fixed assets × (1 - expected net salvage rate) ÷ expected total *** workload. Monthly depreciation of a fixed asset = workload of that fixed asset in the month × depreciation per unit of workload.
The double-declining balance method is a method of accelerated depreciation, mainly in the national economy has an important position, rapid technological progress of electronic production enterprises, shipbuilding industry enterprises, automobile manufacturing enterprises, chemical production enterprises and pharmaceutical production enterprises, as well as other enterprises approved by the Ministry of Finance of the special industries, its machinery, equipment can only be used to adopt the double-declining balance method. The formula is, annual depreciation rate = 2 ÷ estimated useful life.
The sum-of-the-years method is also a method of accelerated depreciation, and the double-balance method of the same conditions, need to meet certain conditions, and reported to the Tax Bureau for approval to use the sum-of-the-years method of depreciation. The formula is, annual depreciation rate = remaining useful life ÷ sum of years of estimated useful life × 100%.