Networks, Barriers, and Trade

David Rezza Baqaee and Emmanuel Farhi

Econometrica, 2024, vol. 92, issue 2, 505-541

Abstract: We study a flexible class of trade models with international production networks and arbitrary wedge‐like distortions like markups, tariffs, or nominal rigidities. We characterize the general equilibrium response of variables to shocks in terms of microeconomic statistics. Our results are useful for decomposing the sources of real GDP and welfare growth, and for computing counterfactuals. Using the same set of microeconomic sufficient statistics, we also characterize societal losses from increases in tariffs and iceberg trade costs and dissect the qualitative and quantitative importance of accounting for disaggregated details. Our results, which can be used to compute approximate and exact counterfactuals, provide an analytical toolbox for studying large‐scale trade models and help to bridge the gap between computation and theory.

Date: 2024
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https://doi.org/10.3982/ECTA17513

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Working Paper: Networks, Barriers, and Trade (2019)
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