Explain import tariffs, quotas and business effects
Distinguish a tariff from a quota and assess how each can affect importing firms, domestic producers and customers.
Section 6 · External influences on business activity
Cambridge IGCSE Business 0264, 2027–2029 syllabus, Topic 6. Trace each external change through the business and state which effects depend on its market, costs or response. Candidates are not assessed on exchange-rate calculations. Written practice is self-checked and does not certify exam readiness
Before you begin
- No previous study of external influences is assumed. Identify who is affected, which business decision changes and what evidence or condition would affect the outcome.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
What is an import quota?
What you will learn
- Define import tariffs and quotas
- Trace effects on costs and quantity
- Explain different firm-level effects
Two trade barriers work differently
An import tariff is a tax charged on imported goods. It can raise the importer's costs or the price faced by buyers, depending on how the charge is passed through.
An import quota limits the amount of a good that may be imported. If the limit binds, it can reduce the supply available from overseas, but the effect on domestic supply, prices and firms depends on market conditions.
Consider both sides of the market
A domestic producer competing with imports may face less price competition or gain demand if imported alternatives become more expensive or restricted. A business using imported components may instead pay more or face supply constraints.
A tariff or quota does not affect every firm in the same way. Identify whether the business imports finished products, uses imported inputs or produces competing goods, and examine customer substitution and available alternatives.
Pause and explain
Which business may be harmed by a tariff on imported components?
Worked example
A tariff is placed on imported kitchen appliances. Explain a possible effect on an importing retailer and a domestic appliance producer.
Show the worked solution
- The retailer may face higher costs on imported stock.
- It may pass some cost to customers or accept lower margins.
- The domestic producer may face less price competition, if customers view its goods as alternatives.
Answer The retailer's imported stock may cost more, so it could raise prices, accept a smaller margin or change suppliers. A domestic producer may become more competitive if customers switch, but the effect depends on product quality, capacity and customer preferences.
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Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
A bakery imports a specialty ingredient and faces a new tariff. Explain two possible responses and one trade-off.
Give me a hint
The tariff may raise the ingredient's landed cost.
Compare my reasoning
- Check whether the supplier can change price or absorb part of the tariff.
- Compare domestic or other-country substitutes and their quality.
- Consider changing prices only after assessing customer demand.
The bakery could compare other suppliers or ingredients and review its menu price. A substitute may differ in quality or reliability; raising prices may preserve margin but reduce demand, so it should test customer response and total cost.
Look for these in your work
- Input-cost change recognized
- Two practical responses
- Trade-off stated
A quota reduces imports of a product that domestic firms also sell. Explain a possible benefit to a domestic producer and one reason its sales may not rise.
Give me a hint
Restricted imports can reduce competition, but customers have choices and domestic capacity matters.
Compare my reasoning
- Imported supply may be limited.
- A domestic producer may attract customers seeking alternatives.
- Check capacity, product fit and other substitute imports or goods.
The producer may face less competition from the restricted imports and could gain sales. Sales may not rise if it lacks capacity, customers prefer other goods or imports from other sources remain available.
Look for these in your work
- Quota effect traced
- Possible benefit
- Substitution and capacity limits
A retailer sells imported furniture and relies on imported fittings for repairs. Explain why a tariff may affect its two activities differently.
Give me a hint
The tariff can affect the cost of stock and repair inputs, while customer prices and demand may respond differently.
Compare my reasoning
- Imported furniture may become more expensive to stock.
- Repair fittings may also cost more, raising service costs.
- Compare margins, repair prices and customer substitution separately.
The tariff may raise the purchase cost of imported furniture and the input cost of repairs. The retailer may face different price sensitivity and competition in each activity, so it should assess those margins and customer responses separately.
Look for these in your work
- Both links identified
- Activities separated
- Demand response considered
Common mistakes
- Defining a quota as a tax
- Assuming the importer always passes the full tariff to customers
- Ignoring firms that rely on imported inputs
What can you explain now?
What is an import quota?
Compare with the explanation
A limit on the quantity imported
A quota restricts quantity.
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Make it stick
How does an import tariff differ from an import quota?
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