This paper develops a model that describes the role of tariffs as a source of government revenue. The model takes a public finance perspective and treats as part of the optimum revenue-raising tax package, relating the behavior of tariff rates and revenues to observable macroeconomic variables such as income and government spending. Although the approach is quite general, the model is constructed to fit the stylized facts concerning the changing role of the tariff in U.S. history. It is shown that relative collection costs for tariffs and other forms of taxes interact with changes in macroeconomic variables to explain the regime shifts (qualitative changes in the relative importance of tariffs and other taxes) found in U.S. tariff history. Copyright 1992 by The London School of Economics and Political Science.
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