This paper develops a theoretical model of corporate taxation in the presence of financially integrated multinational firms. Under the assumption that multinational firms at least partly use internal loans to finance foreign investment, we find that the optimal corporate tax rate is positive...

Corporate tax systems generally maintain a sharp distinction between debt and equity, however, the advent of hybrid instruments has transformed the universe of financial instruments into a debt-equity continuum and tax systems therefore need to draw lines that distinguish the set of debt...

This paper studies how the global minimum tax shapes national tax policies and welfare in a formal model of international tax competition with heterogeneous countries. The net welfare effect is generally ambiguous from the perspective of non-havens. On the one hand, the global minimum tax raises...

We estimate and attempt to explain the evolution of the taxes paid by U.S. multinationals on their foreign profits since 1966. In the oil sector, taxes paid to oil-producing States have been contained, allowing U.S. firms to earn high after-tax returns. Foreign taxes fell abruptly after the...