Tax Competition in an Expanding European Union

This paper empirically examines whether expansion of the EU has increased international tax competition. To do so, we use a market potential weighting scheme to estimate the slope of best responses. We find robust evidence for tax competition. In particular, our estimates suggest that EU membership affects responses with EU members responding more to the tax rates of other members. This lends credence to the above noted concerns.Tax Competition; Foreign Direct Investment; Spatial Econometrics