Vertical and horizontal equity of wealth taxes: an assessment from a joint income-wealth perspective

Despite an established theoretical literature on (optimal) wealth taxation, the empirical literature is still scarce. Previous studies usually focus on country case studies and a specific type of wealth tax in isolation. This paper analyses from a cross-country perspective the distributional effects of the mix of taxes on wealth, on capital income and on transfers of wealth. Moreover, we use the joint distribution of income and annuitised wealth as our analytical framework. To this end we combine data of the Eurosystem Household Finance and Consumption Survey with the tax-benefit microsimulation model EUROMOD, covering six countries: Belgium, Germany, France, Finland, Italy and Spain. Results indicate that existing wealth taxes do not contribute to vertical and horizontal equity: they are often progressive but do not achieve any significant redistribution due to the low revenues they generate and they imply a much lower burden on those deriving their living standard predominantly from wealth than on those who derive it mainly from income.