The affected companies will have two options. Register for VAT in each EU country in which they have sales, or avail of what is called a mini One-Stop Shop, commonly known as MOSS. MOSS, effectively, allows a company register with one EU tax authority for the filing of all their VAT. That tax authority will then distribute the VAT due to other EU member states. MOSS will eliminate the need to register in every EU member state that an affected company has sales (could be all 28 of course). For some clarity try these sites: http://www.hmrc.gov.uk/posmoss/ http://blog.taxamo.com/moss-system-eu-vat/ http://ec.europa.eu/taxation_customs/taxation/vat/how_vat_wo...