WorksheetFunction.Db(Double, Double, Double, Double, Object) Method
Definition
Important
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Returns the depreciation of an asset for a specified period using the fixed-declining balance method.
public double Db (double Arg1, double Arg2, double Arg3, double Arg4, object Arg5);Public Function Db (Arg1 As Double, Arg2 As Double, Arg3 As Double, Arg4 As Double, Optional Arg5 As Object) As DoubleParameters
- Arg1
- Double
Cost - the initial cost of the asset.
- Arg2
- Double
Salvage - the value at the end of the depreciation (sometimes called the salvage value of the asset).
- Arg3
- Double
Life - the number of periods over which the asset is being depreciated (sometimes called the useful life of the asset).
- Arg4
- Double
Period - the period for which you want to calculate the depreciation. Period must use the same units as life.
- Arg5
- Object
Month - the number of months in the first year. If month is omitted, it is assumed to be 12.
Returns
Remarks
The fixed-declining balance method computes depreciation at a fixed rate. DB uses the following formulas to calculate depreciation for a period:
(cost - total depreciation from prior periods) * rate
where:
rate = 1 - ((salvage / cost) ^ (1 / life)), rounded to three decimal places
Depreciation for the first and last periods is a special case. For the first period, DB uses this formula:
cost * rate * month / 12
For the last period, DB uses this formula:
((cost - total depreciation from prior periods) * rate * (12 - month)) / 12