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Trade war

A trade war is an economic conflict in which countries impose tariffs or other trade barriers on one another in retaliation.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

A trade war is an economic conflict in which countries impose tariffs or other trade barriers on one another in retaliation. It is usually associated with protectionist policies intended to shield domestic industries, but it can also raise consumer prices, disrupt trade, and weaken economic growth. For Canadian readers, trade wars are particularly significant as Canada is a major trading nation and can be affected by foreign tariffs, retaliatory measures, and supply-chain disruptions, especially in sectors tied to the United States and other global markets.

Definition

A trade war is an economic conflict characterized by reciprocal increases in tariffs and other trade barriers between nations. This term is used in economics and politics to describe a cycle of retaliation in trade policy, where each country responds to the other's actions with further restrictions.

Causes

Trade wars commonly arise from protectionist policies, disputes over subsidies, dumping, market access, intellectual property, or national security concerns. Governments often impose barriers they believe will protect local industries or pressure trading partners to change their practices.

Effects

Trade wars can raise the cost of imported goods, reduce consumer choice, and disrupt supply chains. They may also increase market volatility and create wider economic harm for both sides, as escalating restrictions can lead to reduced trade and weaker economic growth.

Dispute resolution

Trade disputes may be addressed through negotiation or mediation, including through international institutions such as the World Trade Organization (WTO). In many cases, countries seek face-saving compromises after periods of escalation, as continued conflict can be damaging to all parties involved.

Key facts

  • Trade wars involve reciprocal trade barriers, especially tariffs, between countries.
  • They often begin when one country tries to protect domestic industries or respond to perceived unfair trade practices.
  • Retaliation can lead to escalating costs for imports and exports.
  • Trade wars may reduce consumer choice and contribute to higher prices.
  • They can disrupt supply chains and broader international trade relations.
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Canadian context

Trade wars matter to Canadian readers because Canada is a major trading nation and can be affected by foreign tariffs, retaliatory measures, and supply-chain disruptions, especially in sectors tied to the United States and other global markets.

Frequently asked questions

What is a trade war?
A trade war is an economic conflict in which countries impose tariffs or other trade barriers on each other, usually in retaliation.
What usually causes a trade war?
Trade wars usually begin when a country tries to protect domestic industries or responds to perceived unfair trade practices by another country.
What tools are used in a trade war?
The most common tools are tariffs, but import quotas, export restrictions, and other trade barriers may also be used.
What are the effects of a trade war?
Trade wars can raise prices, reduce consumer choice, disrupt supply chains, and hurt trade and growth in both countries.
Is a trade war the same as protectionism?
No. Protectionism is a policy approach that restricts trade; a trade war is an escalated conflict between countries involving repeated retaliatory trade barriers.

References

  1. Johnson & Wales University Onlinehttps://online.jwu.edu/blog/what-trade-war/
    Supports: Definition of trade war, common tools such as tariffs and quotas, and effects such as inflation and retaliation.
  2. Cambridge Dictionaryhttps://dictionary.cambridge.org/us/dictionary/english/trade-war
    Supports: Concise definition of trade war as a situation where countries raise import taxes and quotas to protect their economies.
  3. Encyclopaedia Britannicahttps://www.britannica.com/money/trade-war-meaning
    Supports: Trade barriers, retaliation, higher costs, and WTO role in reducing barriers and promoting stability.
  4. Encyclopaedia Britannicahttps://www.britannica.com/topic/trade-war
    Supports: Retaliatory tariff cycles and the tendency of trade wars toward economic self-sufficiency and limited trade.