Tariffs and Firm Performance in Ethiopia
利用埃塞俄比亚制造业企业数据和商品层面关税数据，研究贸易自由化对企业绩效的影响，发现降低中间投入品关税能显著提升生产率，而降低最终品关税则无此效果。
We use data on Ethiopian manufacturing firms and commodity-level data on tariffs to examine the effects of trade liberalisation on firm performance. We distinguish the productivity gains that arise from reducing final goods tariffs from those that arise from reducing tariffs on intermediate inputs. We find no evidence that output tariff reduction improves productivity, but we find large positive effects of input tariff reductions. These are robust to alternative productivity measures, treating tariffs as endogenous, and various generalisations of the model. We conclude that policy measures designed to facilitate access to inputs produced abroad may lead to productivity gains.