研討日期

2003年6月7日上午10:00 ~ 下午1:00

研討地點

台大經濟系201教室

討論文獻

題目

作者

文獻出處

Effects of Tariffication: Tariffs, Quotas and VERs under Monopolistic Competition

Jorgensen and Schroder

DIW Discussion Papers #269

報告人

陳宏易

參加人員

林燕淑、邱俊榮、胡均立、陳宏易、王光正、施冠宇、林虹妤、曾靜枝

討論提要

The paper presents a general equilibrium model with monopolistic competition to examine the welfare effects of tariffication..  The formal approach builds on Krugman (1980). The present approach models two symmetric countries, with two industries, of which one is internationally traded, and treats tariffication explicitly. The tariff import-equivalent to an exogenously given and binding import restriction is calculated.

結論

First, it is found that – even with complete reallocation of all tariff revenues – a specific tariff generates more consumer utility than an ad valorem tariff.   Second, we establish that the change in consumers’ welfare under the process of tariffication depends crucially on the initial trade regime. If the import restriction initially is given by a VER (quota), then under the process of tariffication, welfare will be increased (remain unchanged) in case of a specific tariff and remain unchanged (be reduced) under an ad valorem tariff. In any case free trade dominates both the initial quota/VER situation as well as the tariffication situations in terms of consumer utility.

延伸研究

We may apply the market structure of monopolistic competition to several trade issues.  For example, the revenue equivalent of tariff and quota under the monopolistic competition, the optimal tariff under the monopolistic competition, and vertical integration and market foreclosure under the monopolistic competition.

備註