Returns the depreciation of an asset for any period you specify, including partial periods, using the double-declining balance method or some other method you specify. VDB stands for variable declining balance.
The initial cost of the asset.
The value at the end of the depreciation (sometimes called the salvage value of the asset). This value can be 0.
The number of periods over which the asset is depreciated (sometimes called the useful life of the asset).
The starting period for which you want to calculate the depreciation. Start_period must use the same units as life.
The ending period for which you want to calculate the depreciation. End_period must use the same units as life.
The rate at which the balance declines. If factor is omitted, it is assumed to be 2 (the double-declining balance method).
A logical value specifying whether to switch to straight-line depreciation when depreciation is greater than the declining balance calculation.
Contributors: Alberto Ferrari, Marco Russo