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Methods to Aggregate Import Tariffs and their Impacts on Modeling Results


  • Pelikan, Janine

    () (Johann Heinrich von Thünen Institute (vTI))

  • Brockmeier, Martina

    () (Johann Heinrich von Thünen Institute (vTI))


When impacts of WTO market access proposals are analyzed with economic trade models, it is necessary to aggregate tariff data from the detailed tariff line level to the model level. In this article import tariffs and implemented import tariff cuts are aggregated from the HS6-digit tariff line level with the simple and trade weighted average, the Trade Restrictiveness Index (TRI) and the Mercantilist Trade Restrictiveness Index (MTRI) by considering bound and applied tariff rates. The resulting tariffs are substituted for the originally applied import tariffs of the GTAP data base. Multilateral trade liberalization scenarios are then implemented and the welfare effects are compared.

Suggested Citation

  • Pelikan, Janine & Brockmeier, Martina, 2008. "Methods to Aggregate Import Tariffs and their Impacts on Modeling Results," Journal of Economic Integration, Center for Economic Integration, Sejong University, vol. 23, pages 685-708.
  • Handle: RePEc:ris:integr:0450

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    References listed on IDEAS

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    Cited by:

    1. Britz, Wolfgang & van der Mensbrugghe, Dominique, 2016. "Reducing unwanted consequences of aggregation in large-scale economic models - A systematic empirical evaluation with the GTAP model," Economic Modelling, Elsevier, vol. 59(C), pages 463-472.
    2. Listorti, Giulia & Tonini, Axel & Kempen, Markus & Adenauer, Marcel, 2013. "How to Implement WTO Scenarios in Simulation Models: Linking the TRIMAG Tariff Aggregation Tool to Capri," 135th Seminar, August 28-30, 2013, Belgrade, Serbia 160388, European Association of Agricultural Economists.
    3. Janine Pelikan & Martina Brockmeier, 2008. "Tariff Aggregation and Market Access: An Empirical Assessment for Canada and the EU," Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, Canadian Agricultural Economics Society/Societe canadienne d'agroeconomie, vol. 56(4), pages 413-427, December.
    4. Pelikan, Janine & Banse, Martin, 2014. "Auswirkungen regionaler Freihandelsabkommen auf deutsche und europäische Agrarmärkte," Thünen Working Papers 17, Johann Heinrich von Thünen Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries.
    5. Himics, Mihály & Britz, Wolfgang, 2016. "Flexible and welfare-consistent tariff aggregation over exporter regions," Economic Modelling, Elsevier, vol. 53(C), pages 375-387.
    6. Brockmeier, Martina & Bektasoglu, Beyhan, 2014. "Model structure or data aggregation level: Which leads to greater bias of results?," Economic Modelling, Elsevier, vol. 38(C), pages 238-245.

    More about this item


    import tariff aggregation; tariff cutting scenarios; bound and applied tariffs; WTO negotiations; CGE modeling; agricultural trade policy;

    JEL classification:

    • F13 - International Economics - - Trade - - - Trade Policy; International Trade Organizations
    • F17 - International Economics - - Trade - - - Trade Forecasting and Simulation
    • Q17 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Agriculture in International Trade


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