Reclaiming VAT: Checking the validity of your supplier invoices. 5th April 2018 VAT registered businesses will be aware that they can only reclaim VAT on business purchases if they have a valid VAT invoice. For supplies over £250, this invoice should disclose: Supplier: sales invoice unique sequential invoice number, name, address and VAT number. Date and tax point, if different Your name and address Description of goods/services Per item: Price excluding VAT, rate of any discount, rate of VAT and quantity. Total excluding VAT VAT Total including VAT For any suppliers that you are suspicious of as not being legitimately UK VAT registered, there is a website to check on whether their VAT number is valid: http://vat-search.co.uk/