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The cost of a global tariff war: A sufficient statistics approach

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  • Lashkaripour, Ahmad

Abstract

Tariff wars have reemerged as a serious threat to the global economy. Yet measuring the prospective cost of a global tariff war remains computationally prohibitive, unless we restrict attention to a small set of countries and industries. This paper develops a new methodology that measures the cost of a global tariff war in one simple step as a function of observable shares, industry-level trade elasticities, and markup wedges. Applying this methodology to data on 44 countries and 56 industries, I find that (i) the prospective cost of a global tariff war has more-than-doubled over the past fifteen years, with small downstream economies being the most vulnerable. (ii) Meanwhile, due to the rise of global markup distortions, the potential gains from cooperative tariff policies have also elevated to unprecedented levels.

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  • Lashkaripour, Ahmad, 2021. "The cost of a global tariff war: A sufficient statistics approach," Journal of International Economics, Elsevier, vol. 131(C).
    • Handle: RePEc:eee:inecon:v:131:y:2021:i:c:s0022199620301343
    DOI: 10.1016/j.jinteco.2020.103419
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    12. Bachmann, Ruediger, 2025. "Quo vadis, USA?," Kiel Reports 4, Kiel Institute for the World Economy (IfW Kiel).
    13. Yuan Mei, 2024. "Regulatory Protection And The Role Of International Cooperation," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 65(2), pages 817-850, May.

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