Endogenous Market Structures and Optimal Taxation
在一个寡头竞争且企业自由进入的一般均衡模型中，研究了最优劳动和股息所得税的设计，发现股息所得税取决于竞争形式和沉没进入成本，且需偏离完全税收平滑以抵消商业周期扭曲。
This article provides optimal labour and dividend income taxation in a general equilibrium model with oligopolistic competition and endogenous firms’ entry. In the long run, the optimal dividend income tax corrects for inefficient entry. The dividend income tax depends on the form of competition and the nature of the sunk entry costs. In particular, it is higher in market structures characterised by competition in quantities rather than those characterised by price competition. Oligopolistic competition leads to an endogenous countercyclical price markup. As a result, offsetting the distortions over the business cycle requires deviations from full tax smoothing.