The following 15 countries are members of the Economic Community of West African States (ECOWAS) and use a common basis (Common External Tariff - CET) for their customs tariffs:

The module Customs Tariffs contains the Common External Tariff (TEC) of the ECOWAS as well as the customs tariffs of Côte d'Ivoire, Ghana, Senegal and Togo including the national particularities.