Exporting goods to Ireland. A VAT-registered UK business does not need to charge VAT on goods it is sending to Ireland, provided it keeps documentary proof of export. It must also obtain the Irish customer’s VAT registration number and show it on the invoice (including the IE prefix).All Irish VAT numbers are in the format 9999999X or 9X99999X. VAT-registered UK business importing goods from Ireland should give the Irish supplier its UK VAT registration number (including the GB prefix) so that Irish VAT does not get charged. If VAT is charged, the UK business cannot reclaim it on their UK VAT return or by a direct claim to the Irish tax authorities.