Tariff simplification, privatization, and welfare superiority

Abstract

Although the World Trade Organization (WTO) is attempting to realize the liberalization of world trade, it is still feasible for countries to rebuild trade protection barriers. The recent Sino-US trade war is a good example. In the Doha round of WTO negotiations in 2004, the member states agreed to simplify tariffs. In 2006, the Hong Kong conference reached a consensus on implementing ad valorem tariffs, requiring the member states to convert a specific tariff into an ad valorem