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N° 2004-22 |
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| December 2004 |
| A Consistent, Ad-Valorem Equivalent
Measure of Applied Protection Across the World: The MAcMap-HS6 Database |
Antoine Bouët
Yvan Decreux
Lionel Fontagné
Sébastien Jean
David
Laborde |
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| MAcMap-HS6 is a database providing with a
consistent, ad valorem equivalent measure of tariff duties and tariff rate quotas
for 163 countries and 208 partners, at the six-digit level of the Harmonized System
(5,111 products). Based on a joint effort by ITC (UNCTAD-WTO, Geneva) and CEPII
(Paris) to systematically collect and harmonize the relevant information, we describe
here the methodology used in MAcMap-HS6 to compute and aggregate an ad valorem
equivalent of applied protection, well suited for analytical purposes (in particular
computable general equilibrium analysis). Special emphasis is put in minimizing
the endogeneity bias in the aggregation procedure, by making use of a weighting
scheme based on groups of countries ("reference groups"). Structural
differences in export specialization, as reflected in different unit values, are
also acknowledged when computing ad valorem equivalents, and tariff rate quota
rents are computed. The resulting quantitative assessment is illustrated by giving
an overview of ad valorem equivalent, applied protection across the world, in
terms of average as well as distribution. |
Abstract |
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| Tariff duties; ad valorem equivalent; tariff
rate quotas; aggregation method; preferential trade arrangements |
Keywords |
| F13 |
JEL classification |
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