The most significant problems with the existing system for taxing the profit of multinational companies stem from two related sources. First, the underlying “1920s compromise” for allocating the rights to tax profit between countries is both inappropriate and increasingly hard to implement...

The Two-Pillar Solution agreed by 137 countries on 8 October 2021 has been hailed as “historic” and a “a once-in-a-generation accomplishment for economic diplomacy.” To a significant extent, this is due to the expected impact of Pillar 2 (essentially a global minimum tax) on tax...

Two of the most controversial questions relating to Pillar 2 are the extent to which it will allow countries to engage in tax competition, and which countries will collect the tax revenues it generates. The Model Rules published by the OECD/G20 Inclusive Framework on 20 December 2021 provide...

This Paper provides a simple theoretical framework for analysing simultaneous vertical and horizontal competition in excise taxes, and estimates equations informed by the theory on a panel of US state and federal excise taxes on cigarettes and gasoline. We also examine the role played by...

This paper analyses the development of taxes on corporate income in EU and G7 countries over the last two decades. We establish a number of stylised facts about their development. Tax-cutting and base-broadening reforms have had the effect that, on average across EU and G7 countries, effective...

This Paper tests whether OECD countries compete with each other over corporate taxes in order to attract investment. We develop two models: with firm mobility, countries compete only over the statutory tax rate or the effective average tax rate, while with capital mobility, countries compete...