Hi. Been on this problem for days now. Here is the formula I have managed to come up, it works ok and does what I need but I need the D3 and E3 to be referenced in the same way as the FEE_Table as when I . For instance when I select a value from the data validation list in Y2, if the value in AA2 is blank it returns value from Postage!D3, but if not it returns value from Postage!E3. These D3 & E3 values are in the same FEE_Table. So am hoping there is some way I can include in the IF function another Vlookup which chooses the value I want. Any help would be much appreciated. Thanks
=VLOOKUP(Y2,FEE_Table,4,0)+IF(AA2="",Postage!D3,Postage!E3)
Solved by M. A. in 21 mins