On the emissions-inequality and emissions-welfare trade-offs in energy taxation: Evidence on the German car fuels tax

By using estimates from a Demographically-Scaled Quadratic Almost Ideal Demand System (DQUAIDS), we investigate how the German car fuels tax changes the private households' CO2 emissions, living standards, and post-tax income distribution. Our results show that the tax implies a trade-off between the aim to reduce emissions and vertical equity, which refers to the idea that people with a greater ability to pay taxes should pay more.