try in G5:
=IF(AND(G2<=DATE(YEAR(G2),MONTH(G2),21),G4=DATE(YE AR(G2),MONTH(G2),21)),AmountOfTax,"")
and drag it to the right.


Hi Claus
Thanks for the quick reply! Unfortunately, for some reason, it doesn't return the credit, but just a blank. I've tried massaging your formula myself, but with no luck!