We show that the effects of tariff changes on welfare and import volume are fully characterised by their effects on the generalised mean and variance of the tariff distribution, implying two “cones of liberalisation” in commodity price space. Because welfare is negatively but import volume...

We introduce an index of trade policy restrictiveness defined as the uniform tariff that maintains the same trade volume as a given tariff/quota structure. Our index overcomes the problems of the trade-weighted average tariff: It avoids substitution bias, correctly accounts for general...

Trade is affected not only by taxes and subsidies that affect producers and consumers of goods, but also, indirectly, by taxes and subsidies that affect nontraded goods or factors of production. The authors show how the Trade Restrictiveness Index (TRI) may be extended to incorporate these types...

We introduce an index of trade policy restrictiveness defined as the uniform tariff which maintains the same trade volume as a given tariff/quota structure. Our index overcomes the problems of the trade-weighted average tariff - it avoids substitution bias, correctly accounts for general...

We introduce an index of trade policy restrictiveness defined as the uniform tariff that maintains the same trade volume as a given tariff/quota structure. Our index overcomes the problems of the trade-weighted average tariff: It avoids substitution bias, correctly accounts for general...

A country's stance on international trade is an important component of its economic welfare. Yet relatively little theoretical attention has been paid to developing accurate methods to assess trade policies, leaving practitioners and policy makers with ad hoc solutions that lack theoretical...

The authors introduce a new measure, the Trade Restrictiveness Index, to measure the restrictiveness of a system of trade protection. They propose an alternative to the commonly used ad hoc indexes of trade restrictiveness, such as the trade-weighted average tariff. That measure has no...