TARIFF RATES, TARIFF REVENUE, AND TARIFF REFORM - SOME NEW FACTS

This article compares the statutory ad valorem tariff rates (official rates) with the ratio of tariff revenues to import values (collected r ates) for Jamaica, Kenya, and Pakistan. It identifies four general fea tures of the tariff codes, considers whether these features apply to a ll developing countries, and discusses four implications of these feat ures for tariff reform. First, the collected rate for any given item i n the tariff code is only weakly related to the official rate for that item. Second, the variation of collected rates around the official ra te increases with the level of the official rate. Third, the collected rates, on average, increase much less than the official rates. Fourth , the relation between official rates and collected rates is nonlinear , because the slope is lower at higher levels of the official rate.