The VAT system has become an increasingly important source of revenue for the European Member States over the past decade. But due to concerns about sovereignty and inability to come to a consensus on how to treat borders in relation to the VAT, the system is now imperfect, outdated, complicated to follow for those wanting to trade cross border while also being vulnerable to fraud. This thesis will investigate the attempts made by the European Union member states over recent years to rectify the situation through administrative cooperation to update the system into a modern VAT. Problems of previous solutions and organizations set up to deal with the problem will be investigated and what can be learned from them going forward. Understanding...