Why not just qualify Rag's offering with an IF
or
modify mine

Private Sub Worksheet_Change(ByVal Target As Range)
'If Target.Address < "$A$10" Then Exit Sub
If Target.Column < 1 Then Exit Sub
Target.Offset(, 1) = Target.Offset(-1, 1) + Target
End Sub

--
Don Guillett
SalesAid Software

"ED" wrote in message
...
I guess I should explain myself a bit better.
Every month I enter the actual sales amount in Cell C13, then in Cell D13
I
enter the cummulative sales amount for the year (which I calculate
manually).
The following month I enter the new actual sales amount in Cell C13 and I
add this amount to the previous cummulative sales amount from the previous
month in Cell D13. Can D13 be updated automatically with a formula every
time I enter a new amount in Cell C13?

"ED" wrote:


Every month I have to change the sales amount in my worksheet. I would
like this amount to be added automatically to the total for the year
sales
amount in the next cell. Is this possible?