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An Integrated Tariff Analysis System: Software and database

Staff working paper

This paper was released in November 2005. This paper provides an overview of the structure of Integrated Tariff Analysis System (ITAS) by:

  • describing the raw data on tariffs and explaining how these data are converted into a form suitable for multi-country analysis of tariffs
  • outlining several formulas and explaining how they are used to calculate final tariff rates from initial rates
  • describing the resulting tariff data created by ITAS and the data summaries available
  • outlining some ways in which ITAS could be extended.

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  • Contents

Cover, Copyright, Foreword, Contents, Acknowledgments, Abbreviations, Disclaimer and limits on use, Glossary

1   Introduction
The ITAS framework
Other tariff analysis software
Structure of the paper

2   Preparing tariff and trade data for analysis
Applied and bound tariffs
Raw data
Converting raw data into standardised data
Master database

3   Tariff reduction scenarios
Tariff reduction scenarios in ITAS
Measuring the effects of each scenario

4   Tariff analysis - detailed and summary outputs
Analysing tariff change scenarios
Detailed results

5   Extensions
Incorporating planned tariff changes
Non-ad valorem tariffs
Prohibitive tariffs
Non-tariff barriers
Variations in scenarios
Updating ITAS after the Doha Round
Including additional importing countries

A   Data
Product classifications

B   Tariff reduction formulas in ITAS
Proportional reduction formula
European formula
Korean formula
Swiss formula
Flexible Swiss formula
Chinese formula
Girard formula

C   The cost of aggregation
Tariffs averaged over line items or HS6 categories
Tariff dispersion within HS6 categories
Applying formulas to aggregated and disaggregated data

D   Structure of ITAS
Master data preparation module
Import tariff module
Market access module
Price module
Tariff revenue module
Economic modelling input module

E   FAQs
Deriving new results from ITAS
Using existing results from ITAS