Protectionist Tariffs (Edexcel IGCSE Economics)

Revision Note

Steve Vorster

Written by: Steve Vorster

Reviewed by: Jenna Quinn

Explanation of Tariffs

  • A tariff is a tax on imported goods/services (customs duty)

    • This increases the price of imports; therefore, domestic firms find it easier to compete and increase their market share as consumers switch from buying imports to buying domestically produced goods and services

    • Less efficient domestic firms can now continue to produce, but at the expense of more efficient international firms, which have a tax imposed on their products 

4-1-4-protectionism---tariffs
When the USA places a tariff on imported cheese from Britain, the price of British cheese in the USA rises
  • A tariff increases the price of imported goods, which helps switch demand for that product/service from foreign businesses to domestic businesses

  • American customers are more likely to purchase American cheese now the tariff has made British cheese more expensive

A tariff restricts supply and raises prices
A tariff reduces the level of imports, resulting in a shift of the supply curve for cheese from S1 → S2

Diagram analysis

  • The pre-tariff market equilibrium for cheese in the USA is seen at P1Q1

  • After the tariff is imposed, less British cheese is imported, and the supply curve for cheese shifts from S1 → S2

  • The new market equilibrium is seen at P2Q2 

    • Following the law of demand, the quantity demanded contracts from Q1 to Q2

    • The price of cheese increases from P1  → P

Examiner Tips and Tricks

Students are often confused about who pays the tariff. It is not the foreign company but the domestic company that pays the tariff. In our cheese example above, any retailers in the USA who import cheese from Britain have to pay the tariff (import tax) when it crosses the border into the USA. This policy may help cheese manufacturers in the USA, but it harms any other business that imports and sells foreign cheese as it raises their costs of production.

An Evaluation of Tariffs

  • The benefits of tariffs include:

    • They protect infant industries so they can eventually become more competitive globally

    • They increase government tax revenue, which can be used to provide essential services such as healthcare

    • Reduces dumping by foreign businesses as they cannot sell below the  market price 

  • The disadvantages of tariffs include:

    • Increases the cost of imported raw materials, which may affect businesses that use these goods for production, leading to higher prices for consumers 

    • Reduces competition for domestic firms, who may become more inefficient and produce poor-quality products for their customers 

    • Reduces consumer choice as imports are now more expensive and some customers will be unable to afford them

Worked Example

In August 2023, China removed the tariff on imports of Australian barley that had been in place for the previous three years.

Which one of the following diagrams shows China's market for barley after the tariff on imports has been removed?

Removal of tariffs diagram multiple choice question

Answer: Diagram D

  • A is incorrect, as there has not been a rise in market demand in China for barley

  • B is incorrect, as there has not been a fall in market demand in China for barley

  • C is incorrect, as this would show the imposition of a tariff on barley

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Steve Vorster

Author: Steve Vorster

Expertise: Economics & Business Subject Lead

Steve has taught A Level, GCSE, IGCSE Business and Economics - as well as IBDP Economics and Business Management. He is an IBDP Examiner and IGCSE textbook author. His students regularly achieve 90-100% in their final exams. Steve has been the Assistant Head of Sixth Form for a school in Devon, and Head of Economics at the world's largest International school in Singapore. He loves to create resources which speed up student learning and are easily accessible by all.

Jenna Quinn

Author: Jenna Quinn

Expertise: Head of New Subjects

Jenna studied at Cardiff University before training to become a science teacher at the University of Bath specialising in Biology (although she loves teaching all three sciences at GCSE level!). Teaching is her passion, and with 10 years experience teaching across a wide range of specifications – from GCSE and A Level Biology in the UK to IGCSE and IB Biology internationally – she knows what is required to pass those Biology exams.