Environmental pricing reform (EPR) is the process of adjusting market prices to include environmental costs and benefits.
An externality (a type of market failure) exists where a market price omits environmental costs and/or benefits. In such a situation, rational (self-interested) economic decisions can lead to environmental harm, as well as to economic distortions and inefficiencies.
Environmental pricing reform can be economy-wide, or more focused (e.g. specific to a sector (such as electric power generation or mining) or a particular environmental issue (such as climate change). A "market based instruments" or "economic instrument for environmental protection" is an individual instance of Environmental Pricing Reform. Examples include green tax-shifting (ecotaxation), tradeable pollution permits, or the creation of markets for ecological services.
A similar term, "ecological fiscal reform" differs in more narrowly dealing with fiscal (i.e. tax) policies as opposed to using non-fiscal regulations to achieve the government's environmental goals.