Explain the main arguments for and against trade protection, apply them to real cases, and reach a reasoned judgment on free trade versus protection for different economies.
Each is in the Economics glossary, with every other term in the subject.
The widening of the range of goods and services an economy produces and exports, so that it relies less on a small number of products, especially primary commodities.
The sale of a good in a foreign market at a price below the price charged in the producer’s home market or below its cost of production.
A country with relatively low income per capita and low levels of development in health, education and living standards, compared with economically more developed countries.
A country with high income per capita, high levels of development in health, education and living standards, and a broad mix of manufacturing and service industries.
A new industry that has not yet reached the size or experience needed to match the low average costs of established foreign competitors, and so cannot yet compete without temporary protection.
The argument that industries producing goods vital to a country’s defence or survival in a crisis, such as weapons, energy, food or advanced technology, should be protected from foreign competition.
Trade protection imposed by a country in response to barriers placed on its own exports by another country; repeated rounds of retaliation form a trade war.
Explain the arguments for trade protection: infant industries, national security, health and safety, environmental standards, anti-dumping, unfair competition, the balance of payments, government revenue, jobs and diversification.
Explain the arguments against trade protection: misallocation of resources, retaliation, higher costs and prices, less choice, weaker incentives to be efficient and reduced export competitiveness.
Distinguish between arguments for protection that rest on sound economic reasoning and those that mainly protect particular groups.
Draw and explain diagrams that show the infant industry argument, dumping, the costs of a tariff and the effect of retaliation on exporters.
Calculate the cost to consumers of each job protected from given data.
Evaluate free trade versus trade protection for economically more developed and economically less developed countries, using real-world examples.
Trade protection is any government policy that restricts international trade in order to shield domestic producers from foreign competition or to achieve another national goal. Almost all economists agree that trade raises total output and well-being, yet almost every government protects some industries, so the arguments for and against protection are at the centre of trade policy.
The debate links several key concepts. Protection is a form of intervention in markets, usually defended on grounds of equity (protecting workers and regions), security or sustainability, and usually criticised on grounds of efficiency. Because trade connects economies, one country’s protection always affects people in other countries, which makes interdependence
115 exam-style questions on this subtopic, written in the style of the IB papers. The first has its markscheme open. Counted on
Open economies are linked to the rest of the world through spending on exports and imports.
Using the circular flow of income model, explain how a fall in exports combined with a rise in spending on imports could reduce a country's national income.
10 marks
Answers may include:
Terminology: definitions of circular flow of income, foreign sector, exports (an injection), imports (a leakage), national income, interdependence.
Explanation: exports bring spending from foreign households and firms into domestic firms, so a fall in exports reduces injections into the flow; spending on imports goes to foreign producers rather than domestic firms, so a rise in imports increases leakages from the flow; with injections falling and leakages rising, total leakages exceed total injections; domestic firms receive less revenue, cut output and employment, and pay out less in factor incomes; household incomes and consumption fall further, so national income falls until leakages and injections are equal again.
Diagram: a circular flow diagram with the foreign sector, showing a smaller X injection and a larger M leakage; may show an AD/AS diagram with AD shifting left as net exports fall.
A maximum of [6] should be awarded if only exports or only imports are explained.
Markbands (best fit)
Level | Marks | Descriptor |
|---|---|---|
One of 40 short multiple-choice questions on 4.3. Pick an answer to see why it's right or wrong.
Which condition must hold for the infant industry argument to justify protection?
The official deck for this part of the syllabus.
State the two aims that trade protection may serve by restricting international trade.
What is the paradox of trade protection?
With a free account, Augment remembers where you stopped and what you have practiced.
Free trade means trade with no government barriers: goods move between countries at the world price, and each country specialises in line with its comparative advantage. Under free trade, consumers buy from the lowest-cost producer anywhere in the world and resources move to the industries in which each country is relatively most productive. This is why free trade is the benchmark against which every argument for protection is judged.
The main tools of protection are tariffs (taxes on imports), quotas (limits on the quantity imported), production and export subsidies, and administrative barriers such as standards, licences and slow customs procedures. Governments also restrict exports, for example by banning the export of a raw material so that it is processed at home. Each tool raises the price of foreign goods relative to domestic goods, or limits the quantity that can cross the border, or both.
Every argument for protection has the same structure. It claims that the market outcome under free trade fails to achieve some goal, and that restricting trade achieves that goal at an acceptable cost. Evaluating an argument therefore means asking three questions: is the goal valid, does protection actually achieve it, and is there a cheaper way to achieve it?
The arguments for protection fall into three broad groups. Some are about economic development over time (infant industries, diversification). Some are about goals other than efficiency (national security, health and safety, the environment). The rest are about short-run problems for the economy or particular groups within it (dumping, unfair competition, the balance of payments, government revenue and jobs).
A new industry in a country often has higher costs than established foreign producers. Its firms are small, so they cannot yet benefit from economies of scale; their workers and managers have little experience; and suppliers and skilled workers in the industry may not yet exist nearby. If the world price is below the young industry’s average cost, the industry cannot survive against imports, even if it would become fully competitive once it had grown.
The infant industry argument says that temporary protection lets the industry grow until it reaches a scale at which its costs fall below the world price. At that point protection can be removed, and the country has a competitive industry that exports, pays higher wages and develops skills. Infant industries are also called sunrise industries, because they are at the start of their life.
The diagram shows the reasoning. At the small output Q₁, the firm is at point A on its long-run average cost curve (LRAC), where its average cost AC₁ is higher than the world price Pw. Without protection, any domestic price above Pw is undercut by imports, so the firm makes losses and leaves. With protection, the firm sells at a price above Pw in the home market, grows along its LRAC curve and reaches point B at Q₂, where its average cost AC₂ is below Pw. It can then compete without help.
Lower costs come from two sources. Economies of scale lower average cost as output rises, for example through bulk buying of inputs and the use of larger, more specialised machinery. Learning by doing lowers cost as workers and managers gain experience. Both take time and a large enough market, which is what protection provides.
South Korea’s car industry is the standard example. From the 1970s the government kept most foreign cars out of the home market, while Hyundai, which launched its first own-design car, the Pony, in 1975, built up its scale and skills. By the late 1980s Hyundai was exporting cars to North America, and South Korea is now one of the world’s largest car exporters.
The argument is the one most economists accept in principle, because it is about gaining a future comparative advantage rather than defending a present disadvantage. Its weaknesses are practical. A government has to pick the industries that will become competitive, and officials rarely know better than investors which these are. Protection also tends to become permanent: firms that are sheltered have weak incentives to cut costs, and they lobby to keep their protection once they have it.
Many protected industries never “grow up”. India protected its car industry for decades before 1991, and the Hindustan Ambassador, produced from 1958 to 2014, changed little in all that time because buyers had almost no alternatives. The success of South Korea depended on conditions that India lacked, including strict deadlines for firms to export and compete abroad, which forced them to become efficient.
A production subsidy is usually a better tool than a tariff. A subsidy helps the young industry without raising prices for consumers, its cost is visible in the government budget, and it is easier to remove. Its main drawback is that it needs government revenue, which many low-income countries find harder to raise than tariff revenue.
Some industries matter for a country’s defence or survival in a crisis, including weapons, steel, energy, food, semiconductors and medicines. If a country relies on imports of such goods, a war, a blockade or a political conflict could cut off its supply. The national security argument says these strategic industries should be protected so that the country can produce them for itself.
The argument also applies to exports. On 7 October 2022 the United States introduced controls on the export of advanced computer chips and chip-making equipment to China, on the grounds that China could use them for military systems and supercomputers. Here the aim is to stop a rival from gaining a technology, rather than to protect domestic producers, but the effect is still a restriction on trade.
Sources: US Department of Commerce, Bureau of Industry and Security (2022).
National security is a non-economic goal, so economics cannot say whether it is worth its cost. It can show what the cost is, and whether protection is the cheapest way to achieve the goal. Stockpiles of strategic goods, or buying from several friendly countries rather than one, can often provide security at a lower cost than producing everything at home.
The main problem is that the argument is easily abused. In March 2018 the United States placed tariffs of 25% on steel and 10% on aluminium imports, using a law that allows tariffs for national security, and applied them even to close military allies such as Canada and the members of the European Union. When almost any industry can be described as strategic, the argument becomes a cover for ordinary protection.
Governments set standards to protect consumers from dangerous products: food that may carry disease, toys containing toxic paint, medicines that have not been tested. Applying these standards to imports, or banning imports that do not meet them, is a form of administrative barrier. The health and safety argument says that such restrictions are justified when foreign producers work to lower standards or when the risk cannot easily be checked.
In August 2023, after Japan began releasing treated water from the damaged Fukushima nuclear plant into the sea, China suspended all imports of Japanese seafood. China presented the ban as a food safety measure, while Japan and the International Atomic Energy Agency said the release met international safety standards. The case shows how hard it is to tell a genuine safety measure from protection or political pressure.
Health and safety standards are justified when they reflect real risks and apply equally to domestic and foreign goods. They become protection when they are stricter for imports than for domestic goods, are not based on scientific evidence, or are changed suddenly to keep out a particular country’s products. International trade rules allow countries to protect health and safety, but require the measures to be based on evidence and not to discriminate.
Producers in countries with weak environmental laws can sell goods more cheaply because they do not pay for the pollution they cause. In effect, the cost of a negative externality of production is not included in their price. The environmental argument says that a country with strict environmental rules should be able to restrict imports of goods produced with lower standards, both to protect the environment and to stop its own firms from being undercut.
The European Union’s carbon border adjustment mechanism (CBAM) is the leading example. Importers of steel, aluminium, cement, fertilisers, electricity and hydrogen first had to report the emissions in their imports from October 2023, and from January 2026 those emissions became subject to a charge, paid through certificates priced in line with the EU’s own carbon price. The aim is to stop carbon leakage: the movement of polluting production to countries without a carbon price, which would raise world emissions while costing jobs in Europe.
Sources: European Commission, Carbon Border Adjustment Mechanism (2023–2026).
Critics, including India and other economically less developed countries, argue that border carbon charges penalise poorer exporters who have contributed least to past emissions and cannot afford cleaner technology. The argument for environmental protection is strongest where it prices a real externality fairly and applies the same charge to domestic and foreign producers; it is weakest when standards are designed mainly to keep out competitors.
Dumping occurs when a firm sells its product in a foreign market at a price below the price it charges at home, or below its cost of production. A firm may dump to get rid of surplus output, or to drive foreign competitors out of a market so that it can raise prices later. A foreign government may also support dumping with subsidies.
International trade rules allow a country to impose an anti-dumping duty, a tariff equal to the difference between the dumped price and the normal price, when dumping is shown to harm its domestic industry. Anti-dumping is the most widely used form of protection allowed under the rules of the World Trade Organization.
The diagram shows a market with domestic demand (Ddom) and domestic supply (Sdom). At the normal world price Pw, domestic firms produce Q₂ and imports are Q₃ − Q₂. When foreign firms dump the good at Pdump, domestic output falls to Q₁, consumption rises to Q₄ and imports grow to Q₄ − Q₁. Domestic producers lose producer surplus equal to area A, and some of their workers lose their jobs. An anti-dumping duty of Pw − Pdump per unit raises the price back to Pw.
Between 2013 and 2018 the European Union applied anti-dumping and anti-subsidy measures to solar panels from China. Chinese firms could avoid the duties, which went up to 64.9%, only by selling above an agreed minimum import price. The measures protected European panel makers, but raised costs for the much larger number of European firms that installed solar panels and made solar power more expensive. The EU let the measures expire on 3 September 2018, saying this was in the interests of the EU as a whole and of its renewable energy targets.
Sources: European Commission (2018); pv magazine, “EU officially ends MIP for Chinese solar imports” (31 August 2018).
Consumers in the importing country gain from dumping, because they pay less, so the case for anti-dumping duties rests on the harm to producers and on the risk that the low price is temporary. Dumping is hard to prove, because “normal value” and production costs are difficult to measure, especially in economies where the state owns many firms. Anti-dumping cases are often brought by firms that simply face cheaper and more efficient rivals.
Firms often argue that foreign rivals win through unfair advantages: very low wages, weak labour rights, child or forced labour, large government subsidies, cheap state loans or an undervalued currency. The unfair competition argument says that protection creates a “level playing field”, so that domestic firms compete on equal terms.
Some versions of the argument are about human rights rather than economics. The United States’ Uyghur Forced Labor Prevention Act, in force from 21 June 2022, presumes that goods made wholly or partly in China’s Xinjiang region involve forced labour and bans their import unless the importer can prove otherwise. Here trade policy is used to avoid supporting abuse, and the cost to consumers is accepted as the price of that goal.
Sources: US Customs and Border Protection, Uyghur Forced Labor Prevention Act (2022).
The argument about low wages is much weaker. Wages in a poor country are low mainly because the productivity of its workers is low, and low labour costs are the main source of its comparative advantage in labour-intensive goods such as clothing. Protection against these goods raises prices in rich countries and reduces jobs and incomes in poor ones, where export industries often pay more than the alternatives available. The argument about subsidies is stronger, but is better answered by countervailing duties or by challenging the subsidies through trade rules.
A country that persistently buys more goods and services from abroad than it sells has a current account deficit on its balance of payments. It must finance the deficit by borrowing from abroad or by selling assets to foreigners, and if lenders lose confidence, its currency can fall sharply. Restricting imports reduces spending on foreign goods and so, in the short run, narrows the deficit.
India used this reasoning in 2013, when a large current account deficit put pressure on the rupee. Gold imports were a large part of the deficit, so the government raised its import duty on gold in several steps, to 10% in August 2013. Gold imports fell, but smuggling of gold rose.
Protection treats the symptom of a deficit, not its cause. A persistent deficit usually reflects low domestic saving relative to investment, uncompetitive industries or an overvalued currency. Tariffs leave these causes in place, invite retaliation that reduces exports, and raise the cost of imported inputs, which makes exporters less competitive. Policies that raise productivity, or a fall in the exchange rate, deal with the cause rather than the symptom.
Tariffs raise money for the government. In high-income countries this is a small share of revenue, because income taxes, social contributions and value added tax are easy to collect and raise far more. In many lower-income countries, tariffs are one of the easiest taxes to collect: a large share of economic activity is informal, so incomes and sales are hard to tax, but most imports pass through a few ports and border posts where customs officers can collect duty.
The chart shows the difference. Taxes on international trade raise around 8–21% of government revenue in the Philippines, Ethiopia, Lesotho, Ghana, Cambodia, Bangladesh, Uganda and Kenya, but less than 3% in the high-income economies shown. For these lower-income countries, cutting tariffs without another source of revenue would mean cutting spending on schools, health and infrastructure.
The revenue argument is a reason for low, uniform tariffs that raise money with little distortion, not for high tariffs that protect particular industries. A very high tariff raises little revenue because it cuts imports sharply. Over time, building the capacity to collect income tax and value added tax allows a country to rely less on tariffs, which is what most countries have done as they developed.
When imports replace domestic production, firms close and workers lose their jobs. The job losses are often concentrated in particular towns and regions, and the workers affected may find it hard to move to new industries because their skills do not match, or because new jobs are elsewhere. This is a form of structural unemployment. The jobs argument says that protection keeps these workers employed.
The diagram shows how a tariff protects jobs. Before the tariff, the price is Pw, domestic firms produce Q₁ and the rest of domestic demand, Q₄ − Q₁, is imported. The tariff raises the domestic price to Pw + t. Domestic firms expand output to Q₂ and hire more workers, while consumption falls to Q₃ and imports fall to Q₃ − Q₂.
The jobs are paid for by consumers. Every unit bought now costs t more, so consumer surplus falls by the whole area a + b + c + d. Area a goes to domestic producers as extra producer surplus, and area c goes to the government as tariff revenue. Areas b and d are a welfare loss: b is the extra cost of producing Q₂ − Q₁ at home rather than importing it more cheaply, and d is the loss to consumers who no longer buy the good at the higher price.
Real estimates point the same way. A study of the US tariffs of 2018–19 by Federal Reserve economists found that US manufacturing industries more exposed to the tariffs saw relative falls in employment: the jobs gained from protection were outweighed by jobs lost through higher input costs and through retaliation against US exports. Another study found that the 2018 tariffs were passed through completely into the prices US buyers paid for imported goods, lowering US real incomes by about $1.4 billion a month by the end of 2018.
Sources: Flaaen and Pierce, Federal Reserve Board FEDS 2019-086 (2019); Amiti, Redding and Weinstein, Journal of Economic Perspectives 33(4) (2019).
The jobs argument is strongest in the short run, where workers who lose their jobs may stay unemployed for a long time and whole communities decline. In the long run, protection keeps workers in industries without a comparative advantage, so the economy produces less than it could. Policies that help workers move, such as retraining, help with relocation and support for affected regions, deal with the same problem at a lower cost.
Many economically less developed countries (ELDCs) depend on exporting a small number of primary commodities: crude oil, metal ores, coffee, cocoa or cotton. The prices of these goods are volatile, so export earnings, government revenue and growth rise and fall with world prices. Countries that rely on a few commodities also miss the value added created when raw materials are processed into manufactured goods.
Economically more developed countries (EMDCs), by contrast, have high incomes per capita and a broad mix of manufacturing and service industries. The diversification argument says that protection helps an ELDC build new industries, especially manufacturing and the processing of its own raw materials, so that it depends less on a few commodities.
Diversification is closely linked to the infant industry argument, and it has the same strengths and weaknesses. It can raise long-run growth and make the economy less vulnerable to price shocks, but it may lead to inefficient, high-cost industries that survive only behind barriers. The most successful diversifiers in East Asia combined some protection with strong pressure to export, so that firms had to meet world prices and quality.
One form of diversification policy restricts exports rather than imports. A country rich in a raw material bans or taxes its export, so that firms must process it at home. Indonesia’s ban on exports of nickel ore, from January 2020, is the leading recent example of this approach.
Argument | Main reasoning | Main weakness |
|---|---|---|
Infant industries | Temporary protection lets a new industry reach economies of scale and become competitive. | Governments may pick the wrong industries; protection tends to become permanent. |
National security | Strategic goods should not depend on potentially hostile suppliers. | Easily abused; stockpiles or diverse suppliers may be cheaper. |
Health and safety | Consumers must be protected from unsafe imports. | Standards can be used as disguised protection. |
Environmental standards | Imports from low-standard producers do not pay for pollution; prevents carbon leakage. | May penalise poorer countries; may hide protection. |
Anti-dumping | Imports sold below home price or cost harm domestic producers. | Hard to prove; consumers gain from low prices. |
Unfair competition | Low wages, subsidies or forced labour give foreign firms an unfair advantage. | Low wages reflect low productivity and are a source of comparative advantage. |
Balance of payments | Fewer imports reduce a current account deficit. | Treats the symptom, not the cause; invites retaliation. |
Government revenue | Tariffs are easy to collect where other taxes are not. | An argument for low tariffs, not for protection of particular industries. |
Protecting jobs | Keeps workers in industries hit by imports employed. | Very high cost per job; jobs lost in other industries. |
Diversification for ELDCs | Builds new industries and reduces dependence on commodities. | Risk of inefficient industries; investment may be foreign-owned. |
The arguments against protection all follow from the gains from trade. By restricting trade, protection gives up some of those gains, and it shifts income from consumers and export industries to the protected industry and the government. The costs are usually spread thinly across millions of consumers and many firms, while the benefits are concentrated on a few producers, which is one reason protection is often popular despite its costs.
YouTubeUnder free trade, resources move into the industries in which a country has a comparative advantage, so each good is produced where its opportunity cost is lowest. Protection draws labour, capital and land into industries in which domestic costs are higher than world prices, and away from industries that could produce more value. Resources are misallocated, and the economy produces less than it could from its scarce resources.
In the tariff diagram this misallocation is area b: the extra domestic output Q₂ − Q₁ costs more to produce at home, as shown by the supply curve, than it would cost to import at Pw. Area d is a second loss, from consumers who would have valued the good above its world price but no longer buy it. Together b and d are the welfare loss, a loss of allocative efficiency that no one gains.
When one country protects its industries, the countries whose exports are hit often respond with protection of their own. This is retaliation. Each round of protection harms the exporters of the other country, so the result can be a trade war in which both sides lose, and in which industries that had nothing to do with the original dispute pay the price.
In 2018, after the United States put tariffs on Chinese goods, China placed a 25% tariff on US soybeans, the largest US farm export to China. China’s share of US soybean exports fell from 62% in 2017 to 18% in 2018. To support farmers, the US Department of Agriculture paid about $23 billion in direct payments to farmers between 2018 and 2020, so taxpayers paid twice: once through higher prices and again through the support.
Sources: US Department of Agriculture data, compiled in “China–United States trade war”, Wikipedia (2026).
The diagram shows the effect on an exporting country. Before retaliation, farmers sell at Pw₁: they produce Q₄, domestic buyers take Q₁ and the rest, Q₄ − Q₁, is exported. When a large foreign buyer imposes a tariff, demand for the country’s exports falls and the price farmers receive drops to Pw₂. Output falls to Q₃, domestic consumption rises to Q₂, and exports shrink to Q₃ − Q₂. Producers lose surplus equal to area A; domestic consumers gain a smaller amount from the lower price.
Many imports are not final goods but inputs: steel, chemicals, components, machinery and energy. When these are protected, every domestic firm that uses them faces higher costs. The protected industry gains, but firms further along the supply chain lose, and they usually employ far more workers. In modern economies, where production is split across a global value chain, a tariff on one stage raises the cost of all later stages.
The EU’s solar panel duties raised the cost of installing solar power, and the US steel tariffs raised costs for US car, machinery and appliance makers. Higher costs mean higher prices, lower output or lower profits in the industries that use the protected input.
A tariff raises the price of imported goods, and it allows domestic producers to raise their prices too, up to the price of the taxed imports. A quota has the same effect by limiting supply. Consumers therefore pay more for both imported and domestic goods. Because poorer households spend a larger share of their income on traded goods such as food and clothing, higher prices from protection are often regressive and weaken economic well-being.
The evidence on the 2018 US tariffs is that the full tariff was added to the prices US buyers paid, rather than being absorbed by foreign exporters. This contradicts the common claim that tariffs are paid by foreigners.
Protection reduces the quantity and range of imported goods. Quotas and bans remove some goods from the market entirely, and tariffs make imported varieties more expensive, so consumers buy fewer of them. Firms also lose access to the best inputs and technologies available abroad, which can reduce the quality of the goods they make.
Foreign competition forces domestic firms to cut costs, improve quality and innovate. Protected firms face less competition and may have market power in the home market, so they can survive and earn profits while remaining inefficient. Over time this leads to higher costs, older technology and lower productivity growth than in industries that face competition.
Protection also encourages firms to spend effort on lobbying for protection rather than on becoming more efficient. The longer an industry is protected, the stronger its political influence and the harder it is to remove the protection, which is why the infant industry argument so often fails in practice.
Protection harms a country’s exporters in three ways. Higher input costs raise their prices in world markets; retaliation closes some foreign markets to them; and, because protection reduces imports, it reduces the demand for foreign currency, so the domestic currency tends to be higher than it would otherwise be, making exports dearer. The result is a fall in international competitiveness, which can cost more jobs in export industries than protection saves in import-competing ones.
Argument against | Who bears the cost |
|---|---|
Misallocation of resources | The whole economy: lower total output and the welfare loss (areas b + d). |
Retaliation | Export industries targeted by other countries, and taxpayers if they are compensated. |
Higher costs of production | Firms using protected inputs, and their workers and customers. |
Higher prices | Consumers, especially low-income households. |
Less choice | Consumers and firms that want imported varieties and inputs. |
Less incentive to be efficient | Consumers and the economy in the long run, through slower productivity growth. |
Reduced export competitiveness | Exporters and their workers. |
The case for free trade rests on the gains from specialisation, competition and economies of scale. The case for protection rests on goals that markets do not deliver on their own, and on the uneven distribution of the gains from trade. A balanced judgment depends on the type of argument, the time frame, the country’s level of development and the alternatives available.
YouTubeThe arguments differ greatly in strength. The infant industry and diversification arguments are about creating future comparative advantage, so they can be consistent with efficiency in the long run. National security, health and safety and environmental standards serve goals other than efficiency, so they can be valid even when protection reduces output. The jobs, balance of payments and unfair competition arguments are usually the weakest, because protection treats a symptom and other policies deal with the cause at lower cost.
Some arguments are about correcting a market failure, such as the external cost of pollution. In these cases a well-designed trade measure can raise efficiency, because it makes prices reflect the full social cost. Others mainly transfer income from consumers to producers. Separating the two is the core of a good evaluation.
In the short run, the costs of free trade are concentrated and visible: a factory closes and its workers lose their jobs. The gains, such as lower prices and new export jobs, are spread out and take time to appear. In the long run, the gains from trade usually exceed the losses by a wide margin, but only if workers and capital can move to new industries. Where they cannot, because of skills, geography or age, the losses can last for decades, and some protection or, better, adjustment support for affected regions may be justified.
The balance of arguments differs with the level of development. EMDCs have diversified economies, strong tax systems and flexible labour markets, so the revenue, diversification and infant industry arguments rarely apply to them, and protection mainly defends declining industries. For ELDCs, tariffs may be an important source of revenue, new industries may genuinely need time to learn, and dependence on a few commodities is a real risk.
Even for ELDCs, the evidence favours openness combined with targeted support rather than broad protection. The economies that grew fastest after 1960, such as South Korea, Taiwan and later China and Vietnam, protected some industries for a time but pushed firms to export and meet world standards. Countries that relied on broad, long-lasting import substitution, as India did before 1991, often ended up with high-cost industries and slow growth.
Stakeholder | Under protection | Under free trade |
|---|---|---|
Domestic producers in protected industries | Gain: higher prices, more sales, more profit. | Lose sales to cheaper imports; some close. |
Workers in protected industries | Keep their jobs in the short run. | Some lose jobs; may need to retrain or move. |
Consumers | Lose: higher prices and less choice. | Gain: lower prices and more choice. |
Firms using imported inputs and exporters | Lose: higher costs, retaliation, weaker competitiveness. | Gain: cheaper inputs, open export markets. |
Government | Gains tariff revenue (or pays for subsidies). | Loses tariff revenue; may need other taxes. |
Foreign producers | Lose: fewer sales and lower prices. | Gain access to the market. |
In many cases a policy aimed directly at the problem achieves the goal at a lower cost than restricting trade. Production subsidies support infant industries without raising consumer prices. Retraining, regional investment and unemployment support help workers hurt by imports. Domestic carbon pricing, applied equally to domestic and imported goods, addresses pollution. Supply-side policies that raise productivity improve competitiveness and the current account. These alternatives cost government money, but their costs are visible and can be controlled, while the costs of protection are hidden in higher prices.
A reasoned judgment is that free trade is the better general rule, because it raises output and choice and the costs of protection usually exceed its benefits. Protection can be justified in specific cases: where it corrects a market failure, serves a genuine non-economic goal at a reasonable cost, or helps an ELDC develop industries that will become competitive, provided it is temporary, targeted and combined with pressure to compete. The burden of proof lies with the argument for protection.
Key concept | How it applies to trade protection |
|---|---|
Efficiency | Protection usually causes welfare loss by keeping resources in industries without a comparative advantage. |
Equity | Protection is often defended to protect workers and regions hurt by trade, but its higher prices fall hardest on poor households. |
Interdependence | One country’s protection harms exporters elsewhere and invites retaliation. |
Sustainability | Border carbon charges aim to stop carbon leakage, but can penalise poorer countries. |
Intervention | Protection is a government intervention whose benefits must be weighed against its costs and against alternatives. |
Indonesia has some of the largest nickel reserves in the world. Nickel is used to make stainless steel and, increasingly, the batteries in electric vehicles. For decades Indonesia exported most of its nickel as raw ore, mainly to China, where it was processed into higher-value products. The government wanted Indonesia to capture that value itself, a policy it calls downstreaming.
In January 2014 Indonesia banned exports of several unprocessed mineral ores, including nickel ore, to force mining firms to build smelters at home. The ban was relaxed in 2017, when some ore exports were allowed again, and then fully reinstated from 1 January 2020, two years earlier than planned. Raw nickel ore could no longer be exported; only processed products such as ferro-nickel, nickel pig iron, nickel matte and stainless steel could.
Foreign investors, mainly from China, built large processing plants inside Indonesia. The biggest site, the Indonesia Morowali Industrial Park in Central Sulawesi, was founded in 2013 by China’s Tsingshan group and an Indonesian partner. Its operator reports investment of about $34 billion between 2015 and 2024, and by the end of 2024 it employed about 85,000 people. Indonesia became the world’s largest nickel producer, with about 1.6 million of the world’s 3.3 million tonnes in 2022.
The chart shows the change in Indonesia’s exports. Nickel ore exports, worth $1.7 billion in 2013, fell to almost nothing during the first ban and have been zero since 2020. Over the same period, exports of iron and steel products, most of them made from nickel, rose from $0.7 billion in 2013 to $7.4 billion in 2019 and about $28 billion in 2025. Exports of nickel matte and other intermediate nickel products, used in batteries, rose from under $1 billion to over $8 billion.
Sources: UN Comtrade (2026); Indonesia Morowali Industrial Park and US Geological Survey data, compiled in Wikipedia (2026).
The ban is a clear example of the diversification argument for an ELDC. Indonesia moved from exporting a raw primary commodity to exporting processed metals with much more value added, and its export earnings from nickel rose many times over. It also illustrates the infant industry argument: processing plants that would not have been built in Indonesia under free trade, because ore could be shipped to established smelters in China, were created behind the export ban and have grown to a large scale.
The case also illustrates the arguments against protection. The European Union, whose steel industry relied on imported ore, challenged the ban at the World Trade Organization. A WTO panel ruled on 30 November 2022 that the ban broke international trade rules, which forbid export bans of this kind, and rejected Indonesia’s defences. Indonesia appealed on 12 December 2022. Because the WTO’s Appellate Body has been unable to hear appeals since December 2019, the appeal cannot be decided, and the ban remains in place.
Sources: WTO, DS592 Indonesia — Measures Relating to Raw Materials (2022); The Jakarta Post (22 November 2022).
The policy achieved its narrow aim of building a processing industry, but the gains are less clear than the export figures suggest. Much of the investment is foreign-owned, so a large share of the profits flows abroad as income for the foreign owners. Much of the electricity for the smelters comes from coal; the Morowali park is served by a coal power plant of about 2 gigawatts. Clearing land for nickel mines has added to deforestation in Indonesia. On 24 December 2023 a fire at a nickel smelter in the park killed 21 people, and workers and labour groups have reported unsafe conditions in some smelters.
The case also shows the conditions that made the policy possible. Indonesia controls a large share of world nickel reserves, so buyers had to follow the ore into Indonesia instead of buying it elsewhere; a small producer banning exports would simply have lost sales. Its success therefore says little about protection in general. It shows that diversification through protection can work when a country has market power in a resource, but that the benefits for sustainability and for Indonesian workers depend on regulation and on who owns the new industry.
Sources: Indonesia Morowali Industrial Park (2024); Kontan (2024); Media Nikel Indonesia (2023); ABC News (2023); AP News and Deutsche Welle (July 2024); compiled in Wikipedia, “Indonesia Morowali Industrial Park” and “Deforestation in Indonesia” (2026).
Paper 1 essays and the evaluation questions in Paper 2 test the arguments for and against protection, often together with the protection diagrams. Questions use “explain” for the arguments themselves and “evaluate”, “discuss” or “to what extent” for the debate between free trade and protection. Paper 3 can ask for a policy recommendation in which protection is one option.
Evaluation earns the highest marks when it is specific. Strong answers ask whether the goal is valid, whether protection achieves it, who pays, what happens in the long run and whether a cheaper alternative exists, and then reach a judgment that depends on the type of economy and the type of argument.
Part (b) builds on the same theory but asks for evaluation, real examples and a judgment.
Paper 2-style items. Short questions test definitions, diagrams and data.
A [15]-mark question using the text. “Using information from the text and your knowledge of economics, evaluate the decision of the government of Country X to raise tariffs on imported steel.” A strong answer uses the tariff diagram, the figures in the text (jobs protected, price rises, revenue), the effect on steel-using industries and the risk of retaliation, and ends with a judgment on whether the gains to steel workers justify the costs to others.
Trade protection restricts trade to shield domestic producers or to achieve another goal; free trade is the benchmark against which it is judged.
The arguments for protection are infant industries, national security, health and safety, environmental standards, anti-dumping, unfair competition, the balance of payments, government revenue, jobs and diversification for ELDCs.
The arguments against are misallocation of resources, retaliation, higher costs and prices, less choice, weaker incentives to be efficient and reduced export competitiveness.
The costs of protection fall mainly on consumers and on firms that use the protected goods, and are usually larger than the gains to the protected industry.
The strongest arguments concern future comparative advantage, market failures and non-economic goals; the weakest treat symptoms that other policies address at lower cost.
Indonesia’s nickel ore export ban shows that protection can build a processing industry, but at costs to the environment and to trading partners, and in conditions few countries share.
A reasoned judgment is that free trade is the better general rule, with protection justified only when it is temporary, targeted and cheaper than the alternatives.
I can explain each of the ten arguments for trade protection and give a real example of at least four of them.
I can draw and explain the infant industry diagram and the dumping diagram.
I can explain each of the arguments against trade protection, using the tariff diagram to show the welfare loss.
I can use a diagram to explain how retaliation affects the producers of an exported good.
I can calculate the cost to consumers of each job protected and comment on the result.
I can distinguish between arguments that correct a market failure and arguments that mainly transfer income to producers.
I can evaluate free trade versus protection for economically more and less developed countries and reach a justified judgment.
0 |
0 |
The work does not reach a standard described by the descriptors below. |
1 | 1–2 | Little understanding of the specific demands of the question. Relevant economic theory is stated but not relevant. Economic terms are stated but not relevant. |
2 | 3–4 | Some understanding of the specific demands of the question. Relevant economic theory is described. Some relevant economic terms are included. |
3 | 5–6 | The specific demands of the question are understood but only partially addressed. Relevant economic theory is partly explained. Some relevant terms are used appropriately. Where appropriate, relevant diagram(s) are included. |
4 | 7–8 | The specific demands of the question are understood and addressed. Relevant economic theory is explained. Relevant terms are used mostly appropriately. Where appropriate, relevant diagram(s) are included and explained. |
5 | 9–10 | The specific demands of the question are understood and addressed. Relevant economic theory is fully explained. Relevant terms are used appropriately throughout. Where appropriate, relevant diagram(s) are included and fully explained. |
Using real-world examples, discuss the view that trade protection is necessary to protect domestic jobs.
15 marks
Answers may include:
Terminology: trade protection, tariff, quota, subsidy, free trade, structural unemployment, retaliation, efficiency, comparative advantage.
Explanation: arguments for: tariffs and quotas raise the price of imports, so domestic producers increase output and employment; protection may preserve jobs in declining or strategic industries and give infant industries time to become competitive; it may shield workers from sudden import surges. Arguments against: protection raises prices for consumers and for firms using imported inputs, which may cost jobs elsewhere; trading partners may retaliate, reducing export jobs; protected firms lack incentives to become efficient; resources are misallocated away from comparative advantage.
Diagram(s): tariff diagram showing the rise in domestic production from Q1 to Q2 and the fall in imports, with the welfare loss; may show a circular flow diagram with lower imports.
Synthesis/evaluation: the jobs saved are often visible while jobs lost elsewhere are dispersed; the cost per job saved may be very high; alternative policies such as retraining, adjustment assistance and supply-side measures may protect workers more efficiently; short-run versus long-run effects; the word 'necessary'; a reasoned conclusion.
Examples: the US 25 % tariffs on steel imports from 2018, which supported some steel jobs but raised costs for steel-using industries and led to retaliatory tariffs by trading partners; US tariffs on Chinese tyres in 2009 and the high estimated cost per job saved; Nigeria's restrictions on imports of rice and their effect on domestic producers and prices.
N.B. Terminology, theory, diagrams and examples given in part (a) and referred to in part (b) should be rewarded.
Examiners should be aware that candidates may take a different approach which, if appropriate, should be rewarded.
Markbands (best fit)
Level | Marks | Descriptor |
|---|---|---|
0 | 0 | The work does not reach a standard described by the descriptors below. |
1 | 1–3 | Little understanding of the specific demands of the question. Theory is stated but not relevant. Terms are not relevant. No synthesis or evaluation. Real-world examples are identified but not relevant. |
2 | 4–6 | Some understanding of the demands. Relevant theory is described. Some relevant terms are included. Synthesis or evaluation is superficial. A relevant real-world example is identified. |
3 | 7–9 | The demands are understood but only partially addressed. Theory is partly explained. Some terms are used appropriately. Relevant diagram(s) are included where appropriate. Synthesis or evaluation is appropriate but lacks balance. Example(s) are identified and partly developed in context. |
4 | 10–12 | The demands are understood and addressed. Theory is explained. Terms are used mostly appropriately. Diagram(s) are included and explained. Synthesis or evaluation is appropriate and mostly balanced. Example(s) are identified and developed in the context of the question. |
5 | 13–15 | The demands are understood and addressed. Theory is fully explained. Terms are used appropriately throughout. Diagram(s) are included and fully explained. Synthesis or evaluation is effective and balanced. Example(s) are identified and fully developed to support the argument. |
Adam Smith argued that specialization and the division of labour are the main sources of a nation's wealth.
Explain why Smith's ideas of specialization and laissez faire provide support for free trade between countries.
10 marks
Using real-world examples, discuss the view that developing economies should never use trade protection.
15 marks
Imported goods and domestically produced goods often compete for the same consumers.
Explain how a rise in the price of imported goods can increase the demand for domestically produced substitutes and reduce the demand for goods that are complements to the imports.
10 marks
Using real-world examples, discuss the view that tariffs are the most effective way to protect domestic producers from foreign competition.
15 marks