Returns a Double specifying the sum-of-years digits depreciation of an asset for a specified period.

Function SYD( _
   ByVal Cost As Double, _
   ByVal Salvage As Double, _
   ByVal Life As Double, _
   ByVal Period As Double _
) As Double

Parameters

Cost

Required. Double specifying initial cost of the asset.

Salvage

Required. Double specifying value of the asset at the end of its useful life.

Life

Required. Double specifying length of the useful life of the asset.

Period

Required. Double specifying period for which asset depreciation is calculated.

Exceptions/Errors

Remarks

The Life and Period arguments must be expressed in the same units. For example, if Life is given in months, Period must also be given in months. All arguments must be positive numbers.

Example

This example uses the SYD function to return the depreciation of an asset for a specified period given the asset's initial cost (InitCost), the salvage value at the end of the asset's useful life (SalvageVal), and the total life of the asset in years (LifeTime). The period in years for which the depreciation is calculated is PDepr.

Sub TestSYD()
   Dim InitCost, SalvageVal, MonthLife, DepYear, LifeTime, Pdepr As Double
   Dim Fmt As String = "###,##0.00"   ' Define money format.
   Const YEARMONTHS As Integer = 12  ' Number of months in a year.
   InitCost = CDbl(InputBox("What's the initial cost of the asset?"))
   SalvageVal = CDbl(InputBox("What's the asset's value at the end of its life?"))
   MonthLife = CDbl(InputBox("What's the asset's useful life in months?"))
   Do While MonthLife < YEARMONTHS   ' Ensure period is >= 1 year.
      MsgBox("Asset life must be a year or more.")
      MonthLife = CDbl(InputBox("What's the asset's useful life in months?"))
   Loop
   LifeTime = MonthLife / YEARMONTHS   ' Convert months to years.
   If LifeTime <> Int(MonthLife / YEARMONTHS) Then
      LifeTime = Int(LifeTime + 1)   ' Round up to nearest year.
   End If
   DepYear = CInt(InputBox("For which year do you want depreciation?"))
   Do While DepYear < 1 Or DepYear > LifeTime
      MsgBox("You must enter at least 1 but not more than " & LifeTime)
      DepYear = CInt(InputBox("For what year do you want depreciation?"))
   Loop
   Pdepr = SYD(InitCost, SalvageVal, LifeTime, DepYear)
   MsgBox("The depreciation for year " & DepYear & " is " & Format(Pdepr, Fmt) & ".")
End Sub

See Also

DDB Function | FV Function | IPmt Function | IRR Function | MIRR Function | NPer Function | NPV Function | Pmt Function | PPmt Function | PV Function | Rate Function | SLN Function | ArgumentException