This paper analyzes the optimal income tax treatment of couples. Each couple is modelled as a single rational economic agent supplying labor along two dimensions: primary and secondary earnings. We consider fully general joint income tax systems. Separate taxation is never optimal if social...

We follow the approach of Grochulski (2007), who determines the optimal income tax schedule when individuals have the possibility of avoiding paying taxes. We however modify his setup by considering a convex concealment cost function. This assumption violates the subadditivity property used in...

This paper proposes a general framework for analysing commodity tax competition under destination and origin principles, based on three possible tax spillovers: the consumer price spillover, the producer price/terms of trade spillover, and rent spillovers. A model is presented which can be...

We study taxation externalities in federations of benevolent governments. Where different hierarchical government levels tax the same base, one can observe two types of externalities: a horizontal externality, working among governments of the same level and leading to tax rates that are too low...

It has been argued in the literature that interjurisdictional competition forces the public sector to increase its efficiency and thus helps to tame Leviathan governments. The paper addresses this hypothesis by means of a simple tax-competition model with a Leviathan state. It is seen that the...

We consider a setting in which capital taxation is characterized by two distortions working in opposite directions. On one hand, governments engage in tax competition and are tempted to lower capital tax rates. On the other hand, they are unable to commit to future policies and, once capital has...

The rising importance of multinationals in the world economy has been accompanied by a rise in trade between affiliates of multinationals located in different countries, and by profits being shifted to low tax countries. The effect of trade barriers on taxation, intra firm trade and profit...

In this Paper, we show that with international externalities, different country sizes, imperfect competition and trade costs, tax competition for mobile firms is efficiency enhancing with respect to the free market outcome. Nonetheless, while the latter entails too many firms in the larger...