Company tax integration in the EU is yet to be realised. This article first outlines the main benefits of company tax integration for the Economic and Monetary Union, and also discusses the main legal obstacles the EU Treaties pose for harmonisation of company tax. The main problem identified is the unanimity requirement in the legal basis of Article 115 TFEU. As this requirement is currently not feasible in the political climate of the debt crisis, this article assesses possible reasons for and ways to further fiscal integration. It considers Treaty change, enhanced cooperation, soft law approaches and also indirect harmonisation through the new system of economic governance. Eventually, a possible non-EU option is considered. However, this article recommends making use of the current EU law framework, such as soft law approaches and the system of the new economic governance to achieve a more subtle and less intrusive tax harmonisation, or instead a Treaty change that would legitimately enhance and further economic integration in the field of taxation.