WorksheetFunction.Ddb Method (Excel)
Returns the depreciation of an asset for a specified period using the double-declining balance method or some other method you specify.
expression A variable that represents a WorksheetFunction object.
|Arg1||Required||Double||Cost - the initial cost of the asset.|
|Arg2||Required||Double||Salvage - the value at the end of the depreciation (sometimes called the salvage value of the asset). This value can be 0.|
|Arg3||Required||Double||Life - the number of periods over which the asset is being depreciated (sometimes called the useful life of the asset).|
|Arg4||Required||Double||Period - the period for which you want to calculate the depreciation. Period must use the same units as life.|
|Arg5||Optional||Variant||Factor - the rate at which the balance declines. If factor is omitted, it is assumed to be 2 (the double-declining balance method).|
Important All five arguments must be positive numbers.
The double-declining balance method computes depreciation at an accelerated rate. Depreciation is highest in the first period and decreases in successive periods. DDB uses the following formula to calculate depreciation for a period:
Min( (cost - total depreciation from prior periods) * (factor/life), (cost - salvage - total depreciation from prior periods) )
Change factor if you do not want to use the double-declining balance method.
Use the VDB function if you want to switch to the straight-line depreciation method when depreciation is greater than the declining balance calculation.