Germany like many other European countries subsidize commuting by granting the right to deduct commuting expenses from the income tax base. This regulation has often been changed and has regularly been under debate during the last decades. The pros (e.g. causing efficiency gains with respect to...

This paper deals with the question, whether in a federal state the regions should obtain the right to levy regional income taxes. It is shown that a revenue sharing system influences the optimal income tax rates and causes distortions. In a federal system with other distorting taxes, several...

Many governments subsidize electric mobility (E-mobility) to increase the share of electric vehicles (EV) in the car fleet. This aims at reducing carbon emissions. Despite that there is not much research on the full economic costs and benefits of this measures. There are only a few Cost Benefit...

We study the effect of international trade and freeness of trade on interregional inequality within countries. While most studies focus on single countries and only some use a small panel of countries, we use the two largest databases available to examine these issues. One database is provided...