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Topic 4.1
International Trade
In this topic, you will learn how international trade works, why countries import and export goods, and how comparative advantage shapes global trade patterns. You will also find out about free trade agreements, customs unions, tariffs, quotas, and the benefits and costs of trade for consumers, producers, and governments
What is International Trade?
International Trade
The exchange of goods and services between countries, comprising of imports and exports. This type of trade gives rise to a world economy, where prices, or supply and demand, affect and are affected by global events.
Imports and Exports
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Imports are the goods and services brought in from abroad, produced in foreign countries.
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Exports are the goods and services produced domestically that are sold abroad
Trade Balance
The trade balance is the difference between exports and imports, and is part of aggregate demand. It is calculated using exports-imports (X-M)
Why do countries engage in international trade?
1. Resource Endowment
Countries trade to obtain resources they lack, such as oil, minerals, or specific agricultural products.
2. Specialisation
Allows countries to focus on producing goods where they have a comparative advantage, increasing efficiency and gaining economies of scale
3. Increased Competition
Exposure to global markets encourages domestic firms to innovate and lower their prices to remain competitive.
4. Lack of resources
Countries import goods they cannot produce efficiently because varied global resources give other nations a comparative advantage
Comparative and Absolute Advantage
Absolute Advantage
Definition: A country has an absolute advantage when it can produce more of a good than another country using the same amount of resources (or produce the same amount using fewer resources). It is all about sheer productivity and efficiency.
Key Concept: Focuses on productivity and efficiency in terms of total output per unit of input, and is driven by better technology, superior infrastructure, or richer natural resource endowments.
Comparative Advantage
Definition: A country has a comparative advantage when it can produce a good at a lower opportunity cost than another country. Even if a nation is worse at producing everything, it will still have a comparative advantage in something.
Key Concept: Countries should specialise in goods where their opportunity cost is lowest. Note that a country can have comparative advantage but not absolute advantage (and vice versa).
Benefits and Costs of International Trade to Consumers
Benefits
- Lower prices due to increased international competition
- Greater variety of goods and services (more choice)
- Access to higher quality products from specialists abroad
- More innovation
Costs
- Potential and perceived lower safety standards
- Impact of transport on the environment
- Over-specialisation - domestic country might become too reliant on one good/service causing unemployment and GDP contraction if demand falls
- Could cause structural unemployment if companies abroad with comparative/absolute advantage dominate the market
Benefits and Costs of International Trade to producers
Benefits
- More potential sales as there is a wider market to sell to
- International competition forces them to innovate, improve quality, and increase efficiency
- More choice for factors of production
- Greater quality factors of production
- Cheaper factors of production
Costs
- Impact of transport on the environment
- Over-specialisation - domestic country might become too reliant on one good/service causing unemployment and GDP contraction if demand falls
- Could cause structural unemployment if companies abroad with comparative/absolute advantage dominate the market
- Competition might force them out of the market if they cannot compete with international firms
- Large multi-national corporations can replace small businesses
Free Trade Agreements
Free Trade
Definition
Free trade is the unrestricted movement of goods and services between countries without any artificial barriers, such as taxes or volume limits
Key Elements
- Elimination of tariffs
- Removal of quotas
- Reduces trade barriers
- Promotes global efficiency
Free Trade Agreements (FTAs)
Definition
A Free Trade Agreement (FTA) is a formal pact between two or more nations to eliminate all tariffs and quotas between them.
Key Concept
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Goal: Maximises the benefits of free trade by lowering costs for businesses.
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Impact: Increases competition, lowers consumer prices, and boosts export volumes.
Customs Unions
Definition
A customs union is a step beyond a standard FTA. It is a bloc of countries that trade freely with each other and apply an identical trade policy to non-members. The EU is an example.
Key Concept
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Internal Trade: Fully free trade (zero tariffs/quotas) between member nations.
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External Trade: Members must apply a Common External Tariff (CET) to non-members. This can distort trade by forcing countries to buy from less efficient inside-the-union producers rather than cheaper, more efficient global options
Protectionist Policy: Tariffs and Quotas
Tariffs
Definition
A tariff is a tax imposed by a government on imported goods and services entering a country
How it Works
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The Importer Pays: The tariff is paid directly to the customs authority by the domestic importing company, not the foreign exporter.
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Example: If the US places a tariff on Chinese steel, the US importing firm must pay the tax to the US government upon arrival
Economic Chain of Impact
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Industry Protection: Raising the cost of foreign goods shields domestic industries from cheaper international competition.
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Government Revenue: It acts as a direct source of tax income for the state budget.
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Output & Jobs: Higher import prices encourage consumers to buy local. Domestic output increases, creating jobs and helping to rectify structural unemployment in struggling manufacturing regions
Drawbacks
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Higher Prices: Importing firms face increased costs of production, which they pass onto consumers in the form of higher retail prices.
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Inflationary Pressure: Consumers ultimately pay more for everyday goods, reducing their purchasing power
Quotas
Definition
A quota is a strict, fixed physical limit on the total volume or value of a specific good allowed to enter a country over a set period
How it Works
Unlike tariffs, a quota does not charge a tax. Instead, once the physical cap is met, no further imports of that good are permitted legally
Economic Chain of Impact
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Trade Balance: By restricting the volume of foreign goods entering the market, quotas directly reduce total imports to help maintain a stable trade balance.
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Firm Protection: Caps on foreign supply legally isolate domestic firms from aggressive overseas competition.
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Incentivising Local Production: Because foreign supply is artificially restricted, a market shortage is created. This scarcity incentivises domestic firms to safely step in, raise their own production, and fill the gap.