The below code works, but is there a better way?

The logic has to allow for 5 single premium deposits to occur on any
contract anniversary. Example if the contract was issued 7/1/2008.
Deposits can be made on any anniversary after 7/1/2008. Therefore 7/1/2008,
7/1/2011, 7/1/2060 are acceptable dates and 7/15/2008, 9/1/2008 ,
11/16/2040 are unacceptable dates.


Sub Worksheet_Change(ByVal Target As Range)
Dim IMonth As Long
Dim IDay As Long

IMonth = Month(shtInput.Range("Issdate"))
IDay = Day(shtInput.Range("issdate"))
If Target.Column = 2 Then
If Month(Target.Value) < IMonth Or Day(Target.Value) < IDay Then
Target.Value = DateSerial(Year(Target.Value), IMonth, IDay)
MsgBox ("single premium deposits are required to be on anniveries")
End If
End If

End Sub