WorksheetFunction.Ddb Method

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Excel Developer Reference

Returns the depreciation of an asset for a specified period using the double-declining balance method or some other method you specify.

Syntax

expression.Ddb(Arg1, Arg2, Arg3, Arg4, Arg5)

expression   A variable that represents a WorksheetFunction object.

Parameters

Name Required/Optional Data Type Description
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).

Return Value
Double

Remarks

** 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:
    Visual Basic for Applications 
    

    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.

    See Also