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compensation for externalities


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The payment of compensation by those causing adverse externalities to the victims. There are two different points involved here. The economic benefit of ‘making the polluter pay’ is that it creates an incentive to avoid creating pollution, unless avoiding it is too expensive to be worthwhile. This internalizes the externality concerned, and makes for economic efficiency, whether or not the charge the polluter pays goes to the victims of pollution. Where these are widely diffused it may be impossible or too expensive to identify and compensate them. Compensating the victims may be appealing on grounds of equity, but is irrelevant to efficiency. It may indeed create inefficiency: if the victims could have avoided being damaged at low cost by changing their own conduct, getting compensation for actual damage may lead to too little evasive action being taken. On efficiency grounds, if the victims of externalities are compensated at all, it should only be for unavoidable damage. See also polluter pays principle.

Subjects: Economics.


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