Fiscal federalism refers to the division of fiscal powers - powers to tax and spend - between different levels of government. The European Union (EU) is often seen as a legislative giant on clay feet, and one of the principal reasons for this feebleness is the lack of a significant fiscal capacity at the Union level. EU Fiscal Federalism: Past, Present, Future explores ten aspects of the EU's fiscal constitution relating both to the fiscal limits it imposes on Member States and the evolution of its own fiscal policy. Bringing together an international and distinguished group of scholars, this volume analyses the different legal dimensions of fiscal federalism within the EU, from the various aspects of the single market (free movement, banking union, state aid, tax harmonization) to the EU's budget and Economic and Monetary Union. The essays provide a fascinating overview of the topic as well as a detailed analysis of where EU fiscal federalism stands today and how it might develop in the future. Sweeping and thorough, EU Fiscal Federalism will appeal to academics and students of European Union law as well as to European policymakers.