研討日期	2019年 1月21日上午10:20~ 13:10
研討地點	台大社會科學院710室
主講題目 Title of the paper	Comparing Specific and Ad Valorem Taxes under Price-inelastic Demand with Quality Differentiation
作者 Authors of the paper	Kuang-Cheng Andy Wang, Ping-Yao Chou, and Wen-Jung Liang
文獻出處 Journal, vol.(issue), pp	Working Paper
主講人	王光正
參加人員	王光正、王羿傑、林燕淑、施姵全、梁文榮、彭正浩、黃鴻、張瑞雲、林晏如、吳家緻、許至乙、周宗翰、賴宜君、李家君
摘要 Abstract of the paper	We examine the superiority of a specific tax and an ad valorem tax in a fully covered model with vertical differentiation, in which the demand elasticities of the products are inelastic. By focusing on the influences of vertical differentiation and inelastic demand, we show that a specific tax is superior to an ad valorem tax in the short run, when the marginal cost of the high-quality product is relatively low or is relatively high but the ad valorem tax rate is high. We also show that a specific tax may not only be welfare superior to, but may also Pareto dominate an ad valorem tax in the long run, when the ad valorem tax rate is high. These two results imply that the government should impose a specific tax on products with price-inelastic demand if the tax revenue requirement is high.