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Implementing Environmental Taxes on Intermediate Goods in Open Economies

James M. Poterba and Julio J. Rotemberg

June 1994

James M. Poterba and Julio J. Rotemberg, June 1994

Many proposed and actual environmental taxes are taxes on intermediate goods. These goods, such as fossil fuels, are typically tradable, and they are also used in the production of many tradable final goods. How should imports of intermediate and final goods be taxed if the government does not want environmental tax policy to alter the competitive positions of domestic and foreign producers? Not surprisingly, imports of the intermediate goods itself can be taxed at the same rate as domestic intermediate goods. Imports of final goods that are produced using these intermediate goods can be taxed based on their intermediate good intensity, provided there is no joint production. Under conditions of joint production, however, such as those that characterize the petroleum refining and petrochemical industries, it is difficult to define the intermediate goods intensity of any single product. Arbitrary assignments of intermediate good content, for example on the basis of output weight or value, are unlikely to preserve the competitive positions of domestic and foreign producers.

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