A VAT-registered customer must have a valid VAT invoice from the supplier in order to claim back the VAT they have paid on the purchase for their business.
THE FOLLOWING ARE NOT VAT INVOICES
proforma invoices
invoices for only zero rated or exempt supplies
invoices that state 'this is not a vat invoice'
statements of account
delivery notes
orders
letters emails or other correspondence
WHAT IS SHOWN ON A VAT INVOICE
invoice number
date
tax point
sellers name address and vat number
customers name and address
quantity
description
vat rate
net and vat
if a trade discount is offered this amount is deducted before the vat is calculated
if a prompt payment discount is offered the vat is calculated on the amount, or consideration, irrespective of when payment is actually made