Trade War

IntermediateMacroeconomics2 min read

Quick Definition

An escalating economic conflict between countries involving retaliatory tariffs, quotas, and trade barriers designed to harm each other's exports.

Key Takeaways

  • Escalating retaliatory tariffs and trade barriers between countries
  • Raises consumer prices and disrupts global supply chains
  • The U.S.-China trade war (2018+) is the most significant modern example
  • Typically harms economic growth for all parties involved

What Is Trade War?

A trade war occurs when countries impose escalating trade barriers — tariffs, quotas, import restrictions, and regulatory hurdles — against each other in a tit-for-tat pattern. Trade wars typically begin when one country imposes tariffs to protect domestic industries or address trade imbalances, prompting retaliatory measures from trading partners. The most significant recent trade war was between the U.S. and China starting in 2018, involving hundreds of billions of dollars in tariffs on goods ranging from steel and electronics to soybeans and automobiles. Trade wars increase consumer prices, disrupt supply chains, reduce global trade volumes, create uncertainty for businesses, and can slow economic growth for all parties involved. They also incentivize supply chain restructuring and friend-shoring.

Trade War Example

  • 1The U.S.-China trade war beginning in 2018 saw average U.S. tariffs on Chinese goods rise from 3.1% to 19.3%.
  • 2China retaliated against U.S. tariffs by imposing duties on $110 billion of American products including soybeans and pork.
  • 3The Smoot-Hawley Tariff Act of 1930 triggered a global trade war that deepened the Great Depression.