Tax Cooperation in an Unjust World demonstrates the key role that tax systems play in achieving international justice, making novel contributions to the field of international taxation: it establishes that the current international tax system allows wealthy states to claim more than they are justifiably entitled to from the global economy. Allison Christians and Laurens van Apeldoorn's analysis shows how this presently accepted reality both facilitates and feed off continued human suffering, and therefore violates conceptions of international distributive justice. They also explain how a fairer international tax system could be achieved to facilitate justice across states through incremental yet effective adaptation of existing international tax norms and rules.