Free trade and protection - TCE Economics (Tasmania)
“Evaluate the case for free trade and the methods and effects of protection on the Australian economy.”
Free trade lets countries specialise and consume more, while protection shields domestic industries using tariffs, subsidies and quotas. Protection helps protected producers but raises prices and reduces efficiency, which is why Australia has cut protection sharply and pursued free trade agreements.
What this dot point is asking
This dot point goes deeper than the general case for trade. It asks you to analyse the specific methods governments use to protect industries, work out exactly who gains and who loses, and evaluate the arguments for and against free trade in the Australian context.
Methods of protection
Protection is any government policy that gives domestic producers an advantage over foreign competitors. The main methods are:
- Tariffs: a tax on imports, which raises the price of imported goods so domestic producers can sell more at a higher price.
- Subsidies: payments to domestic producers that lower their costs and let them compete with cheaper imports.
- Import quotas: a legal limit on the quantity of a good that can be imported, which restricts supply and raises the domestic price.
- Local content rules and other non-tariff barriers: regulations, standards and procurement rules that favour local producers.
A tax imposed on imported goods, which raises their price in the domestic market to protect local producers from foreign competition.
The effects of a tariff
A tariff is the classic protection diagram. Without trade, the domestic price sits where domestic demand meets domestic supply. With free trade at a lower world price, consumers buy more and imports fill the gap. Imposing a tariff lifts the domestic price toward the world-price-plus-tariff level. The effects ripple through the market:
- Domestic producers gain: they sell more output at a higher price.
- Consumers lose: they pay a higher price and buy less.
- The government gains tariff revenue on the imports that still come in.
- The economy suffers a deadweight loss: resources are drawn into less efficient domestic production and some mutually beneficial trade is lost.
A tariff transfers income from consumers to protected producers and to the government, but the consumer loss exceeds the producer and revenue gains. The difference is the deadweight loss, the net efficiency cost of protection.
The case for protection
Several arguments are made for protection. The infant industry argument says new industries need temporary shelter until they grow large enough to compete. Protection is also defended to save jobs in import-competing industries, to maintain national security in essential industries, to prevent dumping (foreign goods sold below cost), and to diversify the economy. These arguments have political appeal, especially where job losses are concentrated.
The case for free trade
The economic case for free trade rests on comparative advantage: when countries specialise where their opportunity cost is lowest and trade for the rest, world output rises and consumers enjoy lower prices and wider choice. Free trade also exposes domestic firms to competition, forcing them to lift productivity, and gives them access to larger markets and economies of scale. Against protection, economists point out that it raises prices, props up inefficient firms, invites retaliation that can trigger trade wars, and imposes the deadweight loss shown above.
Step 1: Set the world price and tariff
Imported washing machines cost $600 at the world price. The government places a tariff of $200 per machine.
Step 2: Find the new domestic price
The tariff lifts the domestic price toward dollars, since importers must cover the tax.
Step 3: Trace the gains and losses
Consumers now pay $200 more and buy fewer machines (consumer surplus falls). Local manufacturers can profitably sell at the higher price, so producer surplus and output rise. The government collects $200 on each machine still imported.
Step 4: Identify the deadweight loss
The consumer loss exceeds the producer gain plus the tariff revenue. The gap is the deadweight loss: some mutually beneficial purchases no longer happen and resources are drawn into less efficient domestic production. This is the net efficiency cost of the tariff.
Australia and trade liberalisation
Since the 1980s Australia has substantially reduced protection, cutting tariffs across manufacturing and dismantling many quotas. This reform exposed industries such as textiles, clothing, footwear and motor vehicles to global competition, contributing to the decline of car manufacturing but also lifting overall efficiency and lowering prices. Australia has pursued the opposite of protection through free trade agreements with partners including China, Japan, Korea and the United States, and through regional agreements, reflecting its position as a relatively open, trade-exposed economy.
Students often argue protection saves jobs without acknowledging its costs. Protection raises prices for all consumers, keeps resources locked in inefficient industries, and risks retaliation. Always identify the deadweight loss and the losers, not just the protected producers who gain.
A strong answer explains each method of protection, uses the tariff diagram to identify gainers and losers and the deadweight loss, weighs the arguments for protection against the efficiency case for free trade, and applies this to Australia's shift toward liberalisation.
Exam-style questions
Questions in the style of TASC exam questions on this dot point, each with a worked answer. They are written by ExamExplained unless tagged "Past paper"; the year shows the paper a question is modelled on.
Practice6 marksExplain why the principle of comparative advantage is the basis for free trade between economies. Give two (2) reasons why a government may choose to interfere to restrain free trade.Show worked answer →
Comparative advantage. A country has a comparative advantage in a good if it can produce it at a lower opportunity cost than its trading partner. Even if one country is better at producing everything (absolute advantage), both gain if each specialises in the good in which it has the lower opportunity cost and trades for the rest. Specialisation raises total world output, so trade allows both economies to consume beyond their own production possibilities - this gain from specialisation is the basis for free trade.
Two reasons a government may restrain free trade (1.5 marks each):
- Protect infant industries so new domestic industries can grow to an efficient scale before facing import competition.
- Protect domestic jobs and prevent dumping, shielding employment in industries threatened by cheap imports or by foreign goods sold below cost.
Other valid reasons include national security or self-sufficiency in essential goods, and preventing the import of goods produced to lower standards.
PracticeThe Australian Government decides to place a tariff on imported oil. a) Show the impact of the tariff on the market diagram. b) Outline the impact of the tariff on: i. Australian consumers ii. Australian business (producers of oil and businesses in general) iii. Australian Government iv. Overseas producers of oil.Show worked answer →
a) On a domestic supply and demand diagram with a world-price line, a tariff lifts the import price by the amount of the tariff. Domestic price rises, the quantity demanded falls, domestic quantity supplied rises and the quantity imported falls (the gap between domestic demand and domestic supply narrows).
b) Impacts (about 1.5 marks each item):
i. Consumers - pay a higher price and buy less oil, so consumer surplus falls and the cost of living rises.
ii. Business - domestic oil producers gain higher prices, higher output and more revenue, so they benefit; but businesses in general that use oil as an input face higher costs, which can raise prices and reduce competitiveness.
iii. Government - collects tariff revenue equal to the tariff per unit times the quantity of imports.
iv. Overseas producers - sell less oil to Australia at the world price, so their export sales and revenue from this market fall.
A strong answer notes the tariff redistributes from consumers and foreign producers toward domestic producers and government, with an overall efficiency (deadweight) loss.