CFA Level I · CFA Level I Exam
International Trade for CFA Level I: Chapter Guide
International trade at CFA Level I covers why countries trade, who gains and loses, how tariffs, quotas and subsidies change prices and welfare, how trading blocs work, and how the balance of payments records cross-border flows. Solve questions by finding comparative advantage, then tracing who gains, who loses and the net effect.
What this chapter covers
This chapter sits in the Economics topic. It asks why countries trade goods, services and capital, and what happens when governments interfere. You start with comparative advantage, the core idea that trade can make both sides better off even when one country is more efficient at everything. Then you meet the models that explain trade patterns, such as Ricardian and Heckscher-Ohlin.
The middle of the chapter is about policy. Tariffs, quotas, export subsidies and other restrictions change prices, quantities, producer surplus, consumer surplus and government revenue. You must be able to say who gains, who loses and whether the country as a whole is worse off. Arguments for protection, trading blocs such as free trade areas, customs unions and common markets, and the balance of payments close the chapter.
The links to the rest of the paper are strong. Exchange rates and currency topics build on the balance of payments and capital flows. Supply and demand analysis from microeconomics gives you the surplus tools. Later, in equity and fixed income, trade policy shows up as country risk, competitive position and currency exposure.
Economics carries a modest share of the Level I exam, so every topic must pay for the time you spend on it. International trade is one of the more predictable parts. Questions are standalone, three-option items that test definitions, direction of effects and simple surplus logic. There is no penalty for wrong answers, and the concepts are mostly verbal, so you can win marks quickly if you learn the effects of each policy and the classification of trading blocs. The same ideas also help you in the currency and balance of payments material that follows.
International Trade: topics in the order to study them
- 1Gains from Trade and Comparative AdvantageEverything else rests on this idea, so learn opportunity cost and the logic of mutual gains first.
- 2Trade Patterns and Models of TradeOnce you know why trade pays, you can learn which models explain what each country exports.
- 3Trade Restrictions: Tariffs, Quotas and SubsidiesWith free trade as the benchmark, you can now see how each restriction moves prices, surplus and revenue.
- 4Arguments For and Against Trade ProtectionThis topic uses the welfare effects you just learned to judge the case for protection.
- 5Trading Blocs and Regional IntegrationBlocs are a policy choice that reduces barriers among members, so they follow the restriction topics.
- 6Balance of Payments and Capital FlowsThis accounting view of trade and capital flows closes the chapter and leads into exchange rates.
How to prepare International Trade
Plan for short, repeated sessions. The chapter is more about clear reasoning than heavy calculation, so you can study it on a phone and test yourself in small blocks.
- Read the comparative advantage material and work two or three opportunity cost examples by hand until you can name the low-cost producer in under a minute.
- Make a one-page table of the trade models. For each, note the source of advantage, such as technology or factor endowments.
- Draw the supply and demand diagram for a tariff, then for a quota. Label consumer surplus, producer surplus, government revenue and deadweight loss, and say who gains and who loses.
- List the common arguments for protection and write the counter-argument next to each one.
- Memorise the ladder of trading blocs from free trade area to customs union, common market, economic union and monetary union, with what each adds.
- Learn the balance of payments identity and the main accounts, then practise saying what a transaction does to each account.
- Finish with timed three-option questions. At about 90 seconds each, eliminate the option that gets the direction of an effect wrong, then choose between the remaining two.
Common mistakes in International Trade
Confusing absolute and comparative advantage.
Fix: Always compute opportunity cost for each good in each country, then assign the good to the country with the lower one.
Getting the winners and losers of a tariff wrong.
Fix: Sketch the diagram. Price rises, so producers gain, consumers lose, government collects revenue, and the country loses net through deadweight loss.
Treating a quota like a tariff in every respect.
Fix: Ask who gets the gap between the domestic and world price. With a tariff it is the government; with a quota it depends on who holds the licences.
Mixing up the levels of trading blocs.
Fix: Learn the ladder in order and tie each step to what is added: common external tariff, free factor movement, common policy, common currency.
Assuming balance of payments accounts do not need to offset.
Fix: Remember that the current account balance is offset by the capital and financial accounts (plus any statistical discrepancy). A current account deficit is matched by a surplus on those accounts combined, so the overall balance of payments is zero.
Choosing an option because it sounds like a strong policy argument.
Fix: Read what the question asks. If it asks about economic efficiency or total welfare, the standard answer is that restrictions reduce it.
Last-day revision: International Trade
- Comparative advantage means the lower opportunity cost, not the lower absolute cost.
- Both countries can gain from trade even if one is more efficient at everything.
- Opportunity cost of good X is the amount of good Y given up to make one more X.
- Ricardian model: differences in technology drive trade.
- Heckscher-Ohlin model: countries export goods that use their abundant factor intensively.
- A tariff raises the domestic price, helps producers, hurts consumers and raises government revenue.
- A quota restricts quantity; the quota rent goes to licence holders (importers or foreign exporters) unless the government auctions the licences, in which case the government captures it.
- An export subsidy helps exporters and is paid for by taxpayers, and it can distort world prices.
- Trade restrictions usually cause deadweight loss for the importing country.
- Trading bloc ladder: free trade area, customs union, common market, economic union, monetary union.
- A customs union adds a common external tariff to a free trade area.
- Balance of payments: the current account balance is offset by the sum of the capital and financial accounts (plus any statistical discrepancy), so the overall balance of payments is zero.
International Trade practice questions
- Large, sustained capital inflows into an emerging market country are most likely to cause its currency to:
- Country X joins a customs union. Before joining, it produced a good domestically at 120 per unit with a tariff on imports. After joining, it…
- In the balance of payments accounts, a purchase of a foreign company's shares by a domestic investor who obtains a small, non-controlling st…
- A small open economy imposes an import tariff on a good that it imports at the world price. Compared with free trade, the tariff will most l…
- In one hour, Country A can produce either 10 units of wheat or 20 units of cloth. Country B can produce either 6 units of wheat or 18 units …
- In a country's balance of payments, a purchase of foreign government bonds by a domestic investor is most likely recorded in the:
- Country X has a comparative advantage in a good when, compared with its trading partner, it:
- Economists most likely criticize the argument that tariffs should be used to protect domestic jobs in an industry because:
International Trade in other exams
The same ground in other exams, if you are preparing for more than one or want another angle on it.
International Trade: frequently asked questions
Is International Trade a high-weight chapter in CFA Level I?
It belongs to the Economics topic, which has a weight of 6-9% on the 2027 curriculum. International trade is only part of that topic, so expect a small number of questions. Because the ideas are conceptual, they are good value for your study time.
Do I need a calculator for this chapter?
Very little. You may need simple opportunity cost ratios or basic surplus arithmetic, which you can do by hand. The BA II Plus or HP 12C matters far more in other topics.
How are trade questions asked in the exam?
Each is a standalone question with three options, A, B and C. They tend to test the direction of an effect, the definition of a bloc type or which country has the comparative advantage. There is no penalty for a wrong answer, so always pick an option.
How does this chapter connect to currency topics?
The balance of payments links trade flows and capital flows to exchange rates. Understanding why a current account deficit needs capital inflows helps you with the currency material that follows.