Ms Kate Levey:

The idea is that companies which have opted into the CCCTB will be taxed under the common European rules and will then be entitled to file a tax return in just one member state. Each member state would need to have a one-stop shop for the companies in its jurisdiction that are paying tax under the common EU rules. The various one-stop shops would need to be able to talk to one another across borders in the event of disputes about the amounts of money being reported to the one-stop shop in Ireland or Belgium, for example, in respect of profits being made in Germany, for example. It would be a brand-new system. It would require a great deal of co-operation between the tax authorities in the various member states. The directive makes provision for how audits should operate and for the role of member state courts in the event of disputes.