hi colin
i had been showing only the retail cost of mot and correcting vat on the vat return as advised by my accountant.this has been going on since the early part of this year and they have since put a vat note on it.because of the way the invoices were written they want vat on the whole amount for the last three years+interest.what other trade do you have to show what amount you buy a product for.i think it is a technicality because i havent cheated them out of a penny they are getting no more now than they were before.
richard