Reassessing Effective Protection Rates in a Trade in Tasks Perspective

With international trade moving from "trade in (final) goods" to "trade in tasks", effective protection rates (EPRs) are back to the stage, allowing us to measure the overall protection of a product or sector by including the production structure and the origin of the inputs -domestic or imported. Input-output matrices are used in this paper to monitor the production structure of 10 Asian-Pacific countries between 1995 and 2005, and to calculate sectorial EPRs. The paper proposes a series of counter-factual simulation methods aimed at isolating the specific contribution of changes in tariff policies, in production structure or in real exchange rates. Working on international input output matrices allowed also to compute and compare the average propagation length of a cost-push linked to a sudden change in tariff duties, identifying those sectors that are the most deeply interconnected, both in the intensity and in the length of their inter-industrial foreign relationships.