Why China’s $1 Trillion Trade Surplus Matters | IB Economics Explained (2026)

A teacher‑selected piece from the Financial Times’ free schools program examines how China built a remarkable $1 trillion trade surplus. This material accompanies guiding questions for Unit 4.5 and 4.6 and is drawn from the article “How China racked up a $1tn trade surplus.” Registration and details for the FT schools access program are available here: http://www.ft.com/schoolsarefree.

Overview of the task:
- Read the article, then tackle the accompanying prompts:
- Clarify what China’s current account and trade surplus mean in practical terms.
- Identify two factors that have helped raise China’s trade surplus.
- Explain, using a tariff diagram, why China’s trade surplus with the United States has narrowed.
- Use an aggregate demand‑supply framework to describe how China’s rising trade surplus affects its real GDP.
- Discuss how a depreciation of the renminbi over the past decade would influence China’s exports and imports.
- State China’s largest import category.
- Explain why a rise in import prices can lead to higher import expenditure.

Author attribution: Alex Smith, InThinking/thinkIB (https://thinkib.net/economics)

Key ideas and educational goals:
- The article helps students understand current account dynamics and the drivers of large trade balances.
- It uses visual tools like tariff diagrams and AD/AS diagrams to illustrate concepts such as exchange rates, price levels, and real GDP growth.
- Students should be able to connect currency movements with trade flows and the broader macroeconomic picture.

Notes for learners:
- A current account surplus occurs when a country exports more goods, services, and transfers than it imports, contributing to a net inflow of funds.
- A rising trade surplus can be influenced by factors such as global demand conditions, domestic savings behavior, exchange rate trends, relative prices, and productivity differences.
- Tariff diagrams show how trade barriers can alter the composition and volume of imports and exports, potentially narrowing the surplus with certain trading partners.
- An AD/AS framework helps illustrate how persistent surpluses may impact aggregate demand, investment, and overall real GDP in the economy.
- A weaker currency (depreciation) typically makes exports cheaper on foreign markets and imports more expensive, shaping trade balances and domestic inflation.

Discussion prompts to consider:
- Do you think a large and persistent trade surplus is inherently beneficial or are there potential risks? Why?
- How should policymakers balance the goals of supporting export growth with the risks of exchange rate volatility and trade tensions?
- In what ways can shifts in import prices alter a country’s import expenditure, beyond simple price changes?

This rewrite preserves all core information and questions from the original piece while presenting them in a fresh, beginner‑friendly wording aimed at clear understanding.

Would you like this rewritten in a slightly more formal academic tone or a more accessible, student‑friendly voice?

Why China’s $1 Trillion Trade Surplus Matters | IB Economics Explained (2026)

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