Measuring effective tax rates using tax revenue data is attractive, given that revenues collected capture the net effect of tax provisions and taxpayer behaviour that are difficult to model. Yet reliance on aggregate tax and income data requires restrictive assumptions and significantly limits...

This paper analyses the development of the ratio of corporate taxes to wage taxes using a simple political economy model with internationally mobile and immobile firms. Among other results, our model predicts that countries reduce their corporate tax rate, relative to the wage tax, either when...

Implicit tax theory predicts that as capital moves to tax-favored investments, the expected pretax returns on those investments decrease. At the global level, this should create a positive relation between country-level tax rates and firm-level pretax returns. However, theory in income-shifting...