## Sum Of Years Digits Depreciation FunctionMath Financial Class

```Public Function SumOfYearsDigitsDepreciation( _
ByVal vCost As Variant _
, ByVal vSalvage As Variant _
, ByVal vLife As Variant _
, ByVal vPeriod As Variant _
) As Variant```

### Calculate the sum-of-years' digits depreciation for an asset for a specific period.

Example: What is the sum-of-years' digits depreciation for the second year of an asset that costs \$2,000, has a useful life of 5 years, and has a value of \$200 at the end of those five years? \$480.
`    SumOfYearsDigitsDepreciation(2000, 200, 5, 2) = 480`
See the SumOfYearsDigitsDepreciationVerify Subroutine for more examples of this Function.
```    StraightLineDepreciation Function
DecliningBalanceDepreciation Function
DoubleDecliningBalanceDepreciation Function
VariableDecliningBalanceDepreciation Function
SYD Function (Visual Basic)
SYD Function (Microsoft Excel)```
vCost: Initial cost of the asset. Function returns Null if vCost is Null or cannot be interpreted as a number.
vSalvage: Value of the asset at the end of its useful life. Function returns Null if vSalvage is Null or cannot be interpreted as a number.
vLife: Length of the asset's useful life. Function returns Null if vLife is Null or cannot be interpreted as a number.
vPeriod: Period for which the depreciation is calculated. Function returns Null if vPeriod is Null or cannot be interpreted as a number.
Corresponding Units: The vLife and vPeriod arguments must be expressed in corresponding units. If the useful life (vLife) is expressed in months, then the depreciation period (vPeriod) must also be expressed in months.
v2.0 Addition: This function is new to this version of Entisoft Tools.