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IB Economics Trade Diagram Explained
Home / Blog / IB Economics

IB Economics Trade Diagram Explained

IB Economics5/2/2026•5 min read

Tariff questions are common in IB Economics Paper 2 because they let examiners test diagrams, welfare effects, and evaluation in one move.

How to draw the trade diagram

  1. Draw domestic demand and supply
  2. Add the world price line
  3. Add the tariff line above the world price
  4. Show the reduction in imports after the tariff

Animated draw order

PQDSPw + tariffPw (no tariff or reduced tariff)Q1Q2Q increases (Q1 -> Q2)

Student memory line: Lower tariff -> lower price -> Q rises (Q1 to Q2)

IB Economics trade tariff diagram: tariff removal lowers domestic price and increases import quantity in the domestic market.

What to explain after the diagram

  • Domestic price rises
  • Domestic output rises
  • Consumption falls
  • Imports contract

Then evaluate. Is the tariff protecting local jobs, raising revenue, or simply making imported goods less affordable for consumers? That judgment is what lifts the answer.

For a full case-study application, use the Bhutan walkthrough.

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How to Answer 4-Mark Questions in IB Economics →IB Economics Paper 2 Walkthrough: Bhutan Case Study →IB Economics Paper 2 Predicted Topics 2026 →

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