This is an open access title available under the terms of a CC BY-NC-ND 4.0 licence. It is offered as a free PDF download from OUP and selected open access locations. This book examines fundamental issues of principle and practice in the taxation of international corporations. It analyses the economic and wider normative basis of the existing international tax system, and proposes potential reforms, including radical methods of allocating taxing rights based on residence, destination, and formula apportionment.