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v0.1.1503
NotesEconomicsTopic 4.2Tariffs
Back to Economics Topics
4.2.11 min read

Tariffs

IB Economics โ€ข Unit 4

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Contents

  • What is a tariff?
  • Tariff diagram analysis
  • Stakeholder effects of tariffs

๐Ÿท๏ธ What Is a Tariff?

Definition: Tariff.

Tariffs are the most common and most visible form of trade protection. They work by artificially raising the price of imports, making domestic goods relatively cheaper.

Types of tariffs

  • Specific tariff โ€” a fixed amount per unit imported (e.g. $5 per tonne of steel).
  • Ad valorem tariff โ€” a percentage of the import price (e.g. 20% on imported cars).

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[{"blocks": [{"text": "๐Ÿ“Š Tariff Diagram Analysis", "type": "heading", "level": 2}, {"text": "The tariff diagram is one of the most important diagrams in IB Economics. You must be able to identify all the effects.", "type": "paragraph"}, {"type": "divider"}, {"text": "Effects of a tariff", "type": "heading", "level": 3}, {"type": "styled-list", "color": "amber", "items": ["Price rises from Pw (world price) to Pw + tariff.", "Domestic production increases โ€” domestic firms can now compete at the higher price.", "Domestic consumption falls โ€” higher price reduces quantity demanded.", "Imports fall โ€” the gap between domestic supply and demand narrows.", "Government earns tariff revenue โ€” tariff ร— quantity of imports = revenue rectangle.", "Deadweight welfare loss โ€” two triangles representing lost consumer and producer surplus (inefficiency)."]}, {"text": "In your diagram, label: Pw, Pw + t, domestic S and D curves, quantities (Q1 to Q4), tariff revenue (rectangle), and the two deadweight loss triangles. This is a must-know diagram.", "type": "callout", "variant": "tip"}]}, {"type": "react-component", "component": "TariffDiagramExplorer"}]

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๐Ÿ‘ฅ Who Wins and Who Loses?

  • โœ… Domestic producers โ€” gain market share, earn higher prices, and increase output.
  • โœ… Government โ€” earns tariff revenue that can fund public spending.
  • โœ… Workers in protected industries โ€” jobs preserved in the short run.

  • โŒ Consumers โ€” pay higher prices and have less choice.
  • โŒ Foreign producers โ€” lose market access and export revenue.
  • โŒ Overall welfare โ€” deadweight loss means society is worse off overall.
  • โŒ Domestic firms using imported inputs โ€” higher costs for raw materials reduce competitiveness.
Tariffs redistribute income from consumers to producers and the government. The net effect on society is negative due to deadweight loss โ€” resources are misallocated away from their most efficient use.

IB Exam Questions on Tariffs

Practice with IB-style questions filtered to Topic 4.2.1. Get instant AI feedback on every answer.

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How Tariffs Appears in IB Exams

Examiners use specific command terms when asking about this topic. Here's what to expect:

Define

Give the precise meaning of key terms related to Tariffs.

AO1
Describe

Give a detailed account of processes or features in Tariffs.

AO2
Explain

Give reasons WHY โ€” cause and effect within Tariffs.

AO3
Evaluate

Weigh strengths AND limitations of approaches in Tariffs.

AO3
Discuss

Present arguments FOR and AGAINST with a balanced conclusion.

AO3

See the full IB Command Terms guide โ†’

Related Economics Topics

Continue learning with these related topics from the same unit:

4.1.1Absolute and comparative advantage
4.1.2Free trade benefits and the terms of trade
4.2.2Quotas and subsidies
4.2.3Administrative barriers and other forms of protection
View all Economics topics

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4.1.2Free trade benefits and the terms of trade
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Quotas and subsidies4.2.2

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