As some of you know, I use Visual Basic to make custom windows programs. Most of these programs are highly specialized and written to fit into a specific workflow. Occasionally I write something a bit more general. VAT-calc is a tiny application that presents just three fields. You can enter a number into any of these fields and the other fields update to provide the missing figures. So for instance if you know the price including vat then just enter this figure in the inc field and the program will show you the VAT exclusive price and the VAT value. All very useful stuff if you are VAT registered.
You can buy vatcalc from the store link on this website.