I was wondering if someone could possibly help us work out how to work out profit margin on a item when VAT come's in to play. We shall soon be registered for VAT and we are wondering how this work's now. We buy an item for £320 plus VAT for example, we sell this on say Amazon for £450 inc VAT. Carraige is £6.00, fee's in the Category are 15% would someone help us work out the profit (or not) on this please? Louise.