Share of environmental taxes in total tax revenues

The indicator measures the share of environmental taxes in total revenues from taxes and social contributions. Environmental taxes are defined as taxes whose tax base is a physical unit (or proxy of it) of something that has a proven, specific negative impact on the environment. Environmental tax revenues stem from four types of taxes: energy taxes (which contribute around three-quarters of the total), transport taxes (about one fifth of the total) and pollution and resource taxes (about 4 % of the total).