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Metadata Glossary

CodeTM.TAX.TCOM.SM.AR.ZS
Indicator NameTariff rate, applied, simple mean, primary products (%)
Short definitionSimple mean applied tariff is the unweighted average of effectively applied rates for all products subject to tariffs calculated for all traded goods. Data are classified using the Harmonized System of trade at the six- or eight-digit level. Tariff line data were matched to Standard International Trade Classification (SITC) revision 3 codes to define commodity groups. Effectively applied tariff rates at the six- and eight-digit product level are averaged for products in each commodity group. When the effectively applied rate is unavailable, the most favored nation rate is used instead. To the extent possible, specific rates have been converted to their ad valorem equivalent rates and have been included in the calculation of simple mean tariffs. Primary products are commodities classified in SITC revision 3 sections 0-4 plus division 68 (nonferrous metals).
Long definitionSimple mean applied tariff is the unweighted average of effectively applied rates for all products subject to tariffs calculated for all traded goods. Data are classified using the Harmonized System of trade at the six- or eight-digit level. Tariff line data were matched to Standard International Trade Classification (SITC) revision 3 codes to define commodity groups. Effectively applied tariff rates at the six- and eight-digit product level are averaged for products in each commodity group. When the effectively applied rate is unavailable, the most favored nation rate is used instead. To the extent possible, specific rates have been converted to their ad valorem equivalent rates and have been included in the calculation of simple mean tariffs. Primary products are commodities classified in SITC revision 3 sections 0-4 plus division 68 (nonferrous metals).
SourceStaff estimates; World Integrated Trade Solution system (WITS), World Bank (WB); Trade Analysis and Information System (TRAINS), UN Conference on Trade and Development (UNCTAD); Integrated Data Base (IDB), World Trade Organization (WTO); Consolidated Tariff Schedules (CTS), World Trade Organization (WTO)
TopicTrade
DatasetWDI
PeriodicityAnnual
Reference period1988-2022
Statistical concept and methodologyMethodology: This indicator represents the simple (unweighted) average of applied most-favored-nation (MFN) tariff rates across all tariff lines within the primary products category. Each line is given equal weight regardless of the trade volume associated with it. The mean is calculated by summing the applied rates and dividing by the number of lines. Simple mean applied tariff is the unweighted average of effectively applied rates for all products subject to tariffs calculated for all traded goods. Data are classified using the Harmonized System of trade at the six- or eight-digit level. Tariff line data were matched to Standard International Trade Classification (SITC) revision 3 codes to define commodity groups. Effectively applied tariff rates at the six- and eight-digit product level are averaged for products in each commodity group. When the effectively applied rate is unavailable, the most favored nation rate is used instead. To the extent possible, specific rates have been converted to their ad valorem equivalent rates and have been included in the calculation of simple mean tariffs. Primary products are commodities classified in SITC revision 3 sections 0-4 plus division 68 (nonferrous metals). Tariff data are primarily sourced from the World Trade Organization (World Trade Organization (WTO)) Consolidated Tariff Schedules (Consolidated Tariff Schedules (CTS)) and Integrated Database (Integrated Database (IDB)), with supplementary inputs from the United Nations Conference on Trade and Development (United Nations Conference on Trade and Development (UNCTAD)). Data are submitted by national authorities using the Harmonized System (Harmonized System (HS)) classification. The WTO Secretariat validates and harmonizes submissions to a common HS version for comparability. Data are generally updated annually or as new schedules are submitted. Due to validation and alignment processes, there is typically a one- to two-year time lag between national reporting and publication. The indicator excludes missing or unreported lines. Harmonization across HS revisions is conducted to ensure international comparability, and no adjustments are made beyond validation of submitted data.
License URLhttps://datacatalog.worldbank.org/public-licenses#cc-by
License TypeCC BY-4.0
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