WorksheetFunction.Db Method
Office 2007
| Excel Developer Reference |
Syntax
expression.Db(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). |
| 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 | Month - the number of months in the first year. If month is omitted, it is assumed to be 12. |
Return Value
Double
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
