I found this problem when upgrading to the latest version 4.80 the " enter a bill to be paid later" has no VAT column as you say, however it did in v 4.71 - But there was a bug in the software in which the calculated VAT amount was consistently a penny out and the final total would not balance and therefore could not be completed without adding a journal entry of one penny to VAT paid, perhaps this is why we are now made to do the whole purchases as two manual journal entries. You can however create a new purchase order which will automatically calculate net gross and VAT and then enter the supplier in the " enter a bill to be paid later" this will fill it in correctly. It is a long winded operation especially if entering lots of payments, I wish it could be improved.