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FinanceVdb Method
Returns the depreciation of an asset for any given period using the variable-declining balance method.

Namespace: Imsl.Finance
Assembly: ImslCS (in ImslCS.dll) Version: 6.5.2.0
Syntax
Copy
public static double Vdb(
	double cost,
	double salvage,
	int life,
	int firstPeriod,
	int lastPeriod,
	double factor,
	bool noSL
)

Parameters

cost
Type: SystemDouble
A double which specifies the initial cost of the asset.
salvage
Type: SystemDouble
A double which specifies the salvage value of the asset.
life
Type: SystemInt32
A int which specifies the number of periods over which the asset is being depreciated.
firstPeriod
Type: SystemInt32
A int which specifies the first period for the calculation.
lastPeriod
Type: SystemInt32
A int which specifies the last period for the calculation.
factor
Type: SystemDouble
A double which specifies the rate at which the balance declines.
noSL
Type: SystemBoolean
A bool flag. If true, do not switch to straight-line depreciation even when the depreciation is greater than the declining balance calculation.

Return Value

Type: Double
A double which specifies the depreciation of the asset.
Remarks
It is computed using the following:

If no\_sl = 0,

\sum \limits_{i = {\it firstPeriod} + 1}^{\it lastPeriod} {{\it ddb}_i }

If no\_sl \ne 0,

A + \sum\limits_{i = k}^{\it lastPeriod} {{{{{\it cost}} - A - {\it salvage}} \over {{\it lastPeriod} - k + 1}}}

where {\it ddb}_i is computed from Ddb for the i-th period. k = the first period where straight line depreciation is greater than the depreciation using the double-declining balance method.

A = \sum\limits_{i = {\it firstPeriod} + 1}^{k - 1} {{\it ddb}_i}

See Also