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An environmental tax, ecotax (short for ecological taxation), or green tax is a tax levied on activities which are considered to be harmful to the environment and is intended to promote environmentally friendly activities via economic incentives. One notable example is a carbon tax. Such a policy can complement or avert the need for regulatory (command and control) approaches. Often, an ecotax policy proposal may attempt to maintain overall tax revenue by proportionately reducing other taxes (e.g. taxes on wages and income or property taxes); such proposals are known as a green tax shift towards ecological taxation. Ecotaxes address the failure of free markets to consider environmental impacts.[1]
Ecotaxes are examples of Pigouvian taxes, which are taxes on goods whose production or consumption creates external costs or externalities. An example might be philosopher Thomas Pogge's proposed Global Resources Dividend.[2][3]