IB Economics Paper 3: The HL Policy Paper Explained

By Michael Thompson · Education Specialist; 10 years teaching the IB at Bromsgrove School · Published 4 October 2026 · Updated 6 October 2026

IB Economics Paper 3 is an HL-only exam lasting 1 hour 45 minutes and worth 30% of the final HL grade, making it one of the heaviest single components in the course. In its current policy-paper form, first assessed in 2022, it tests your ability to work with provided data, apply quantitative techniques, and produce a justified policy recommendation - skills that go well beyond recall. The IB's own sample question asks students to 'recommend a policy that could be introduced by the government of Country X in response to the expected fall in the world price of coffee', which gives a clear picture of what the paper demands. This guide explains the structure, the calculations you need to know, and how to build an answer that holds up under the pressure of a timed exam.

Key Takeaways

In This Article

  1. What Is IB Economics Paper 3?
  2. IB Economics HL Paper 3 Structure and Format
  3. The Core IB Economics Paper 3 Calculations You Need to Know
  4. How to Structure a Paper 3 Policy Recommendation
  5. HL-Only Topics and Why They Matter for Paper 3
  6. Time Management and Exam Technique for Paper 3
  7. How to Prepare: Practice and Resources
  8. What to Do Next

1. What Is IB Economics Paper 3?

IB Economics Paper 3 is a Higher Level-only exam that lasts 1 hour 45 minutes and counts for 30% of the final HL grade; its current form, the policy paper, was first assessed in 2022. Unlike the other papers, it is built around a policy task: you receive a set of data, apply quantitative techniques to it, and produce a justified policy recommendation.

The IB's official subject brief captures the flavour of the paper in its sample question:

> "Using the data provided, and your knowledge of economics, recommend a policy that could be introduced by the government of Country X in response to the expected fall in the world price of coffee."

That one question shows what the paper is built around: working with provided data, applying your economics, and justifying a policy choice.

To see where Paper 3 sits in the full assessment picture, the table below maps all four components for HL students.

ComponentTypeDurationHL weighting
Paper 1Extended response1 hr 15 min20%
Paper 2Data response1 hr 45 min30%
Paper 3Policy paper (HL only)1 hr 45 min30%
Internal AssessmentPortfolio of three commentaries20 teaching hours20%

Paper 1 tests argument construction from recalled knowledge, with no case study. Paper 2 asks you to interpret unseen extracts and statistics. Paper 3 combines both demands and adds the policy layer. So strong data response technique from Paper 2 transfers directly to Paper 3, but Paper 3 also requires the structured argumentation you build for Paper 1.

2. IB Economics HL Paper 3 Structure and Format

Paper 3 is the exam that separates HL candidates from SL. According to the IB Economics HL subject brief, it lasts 1 hour 45 minutes and counts for 30% of the final HL grade, with first assessments from 2022.

The paper draws on all units of the syllabus: the introductory unit, microeconomics, macroeconomics, and the global economy. Rather than testing recalled arguments in isolation, it gives you data and asks you to work with it, as the sample question quoted above shows. The paper has two compulsory questions, each worth 30 marks: structured parts on the data (calculations, diagrams and short explanations) worth 20 marks, then a 10-mark policy recommendation. So you will switch between number-crunching and argument-building twice within the same exam.

Two practical points that catch students out:

The subject brief names nine key concepts underpinning the course: scarcity, choice, efficiency, equity, economic well-being, sustainability, change, interdependence, and intervention. These are not decorative. Framing a policy recommendation around two or three of them, for example arguing that a subsidy improves equity but risks inefficiency, gives your written answer coherent economic logic rather than a list of points.

3. The Core IB Economics Paper 3 Calculations You Need to Know

Do not count on a formula sheet in IB Economics Paper 3: get every equation below into your head before you sit the exam. This section covers cost and revenue, inequality and exchange-rate calculations, but it is not the full list: Paper 3 can draw on quantitative techniques from across the syllabus, such as elasticities and the multiplier, so work from your teacher's complete list as well.

Cost and revenue formulas

FormulaExpression
Total costTC = TFC + TVC
Average fixed costAFC = TFC ÷ Q
Average variable costAVC = TVC ÷ Q
Average total costATC = TC ÷ Q
Marginal costMC = ΔTC ÷ ΔQ
Total revenueTR = P × Q
Average revenueAR = TR ÷ Q
Marginal revenueMR = ΔTR ÷ ΔQ
Economic profitTR − TC

The MC calculation trap. When a table shows output rising from, say, 100 to 120 units, you divide the change in total cost by 20, not by 120. Dividing by total output rather than the change in output is an easy slip to make on IB Economics Paper 3 data questions.

Gini coefficient from a Lorenz curve

You may be asked to read, compare or work out Gini values from Lorenz curve data or a Lorenz curve diagram. The coefficient runs from 0 (perfect equality) to 1 (maximum inequality). A question might ask you to explain how a progressive income tax would shift the Lorenz curve closer to the line of perfect equality, which requires you to combine the quantitative reading with a diagram and written analysis.

Exchange rate price conversions

A typical question gives you a price in a foreign currency and two different exchange rates at two different dates. Your job is to convert the price at each rate and find the change in dollar value. Work through it in three steps:

  1. Divide the foreign-currency price by exchange rate 1 to get the dollar price at date 1 (this works when the rate is quoted as units of foreign currency per US$1; if it is quoted as dollars per unit of foreign currency, multiply instead).
  2. Divide the same foreign-currency price by exchange rate 2 to get the dollar price at date 2.
  3. Subtract to find the change.

Keep all working visible. Even if you reach the wrong final figure, showing each step can earn partial credit. This applies across all calculation types in the paper, so never skip to an answer without writing out the intermediate values.

4. How to Structure a Paper 3 Policy Recommendation

Go back to the IB's own sample question about Country X and the expected fall in the world price of coffee. Its wording is deliberate. It tells you exactly what the answer must do: start with the provided data, apply economic reasoning, and land on a justified recommendation. A response that skips any of those three things is incomplete regardless of how fluent it sounds.

Here is a reliable five-step structure for a policy recommendation answer:

  1. Anchor in the data. Open by referencing the specific figures or extracts provided. If the stimulus shows a projected price fall of a given percentage, cite it. The subject brief lists interpreting data sets and using quantitative techniques to identify, explain and analyse economic relationships among the skills the course builds; this is where you use them, rather than recalled theory alone.
  1. Identify the affected stakeholders. In the coffee scenario, that means coffee farmers (income falls), the government (tax revenue from exporters may drop), consumers, and potentially rural communities dependent on the industry. Name them briefly and specifically.
  1. Recommend one policy, and test it against an alternative. The question asks for a policy, and a subject leader's reflection on the first sitting advised focusing on one unless the others are complementary or used to compare against your recommendation. For a falling commodity price, a government subsidy to producers and a diversification fund are two distinct options with different fiscal costs, targeting accuracy, and timelines, so one makes a natural comparison for the other.
  1. Justify your recommended policy using economic concepts. The nine key concepts underpinning the course - scarcity, choice, efficiency, equity, economic well-being, sustainability, change, interdependence, and intervention - give you a precise vocabulary for justification. A subsidy addresses equity and economic well-being in the short run; a diversification fund scores better on sustainability and long-run efficiency. Naming the relevant concept tightens the argument considerably.
  1. Reach a clear, evidence-based conclusion. State which policy you recommend and why, tied back to the data in the stimulus. An answer that never commits to a policy has not answered the question.

A common slip is treating the data as background and writing from recalled theory instead. The question asks you to use the data provided, so reason from the extract outward, not from textbook models inward.

5. HL-Only Topics and Why They Matter for Paper 3

Per the IB Economics HL subject brief, Paper 3 is based on all units of the syllabus. That includes HL-only content, and the exam makes no promises about which units will carry the heaviest load in any given sitting.

A major HL-only area is market failure - market power, in the microeconomics unit, which contains the theory of the firm. SL students do not cover this material. HL students need to be comfortable with:

One relationship worth knowing: the MC curve crosses both the AVC curve and the ATC curve at their minimum points. If a data question gives you an output table, that tells you where average total cost is lowest, while the profit-maximising output is where MC = MR.

Skipping HL-only sections on the grounds that they feel peripheral is a real risk. Because the policy question can draw on any part of the syllabus, a gap in your knowledge of market power or economic cost leaves you exposed if the paper leans on it.

6. Time Management and Exam Technique for Paper 3

You have 1 hour 45 minutes for two compulsory questions, each combining quantitative sub-parts with a 10-mark written policy recommendation. Without a deliberate plan, the two halves will compete for the same time.

A workable split looks like this:

Within each question, tackle the calculation sub-parts first. This is not arbitrary sequencing. The numbers you produce (exchange rates, cost figures, Gini values) act as the evidence base for your written recommendation. If you write the policy section before completing the calculations, you will either repeat yourself or contradict your own quantitative findings.

A classic time trap is spending 15 or more minutes perfecting a diagram that carries only a few marks. A clear, correctly labelled diagram is what counts; extra polish does not earn more.

One lesson from the first sitting: a subject leader's reflection on the May 2022 session noted that Paper 3 had "lots of quantitative techniques plus diagrams requirements", closely following the specimen paper. The same reflection advised spending time practising quantitative techniques, and that includes pulling the relevant figures out of the stimulus quickly, not just doing the calculations once you have them.

7. How to Prepare: Practice and Resources

Past papers are the most direct preparation tool, and the IBO is the authoritative source for official materials. Beyond that, a few habits make a meaningful difference.

Practise every type of calculation, not just the familiar ones. The paper draws on the full syllabus, so weighting your revision toward macroeconomics calculations at the expense of, say, exchange rate or cost calculations leaves you exposed. Rotate through unit types deliberately.

The IB subject brief includes the sample Paper 3 question about Country X and coffee quoted above. Use it as a template for structuring practice answers. Write out your data interpretation, your stakeholder analysis, your trade-offs, and your justified conclusion, then check whether each element is present.

Practise reading unfamiliar data sets under timed conditions. The stimulus in IB Economics Paper 3 is unseen, so fluency with unfamiliar tables and extracts matters as much as knowing the formulas. Set a timer and work through data sets you have not seen before, forming a view on what the numbers mean before you write a single line of analysis.

A practical step this week: take that sample question, make up a few figures of your own for Country X, and plan a full recommendation against the clock using the five steps above.

8. What to Do Next

The most useful thing you can do this week is sit a full Paper 3 under timed conditions: ask your teacher for a specimen or past paper with its markscheme, then work through it in 1 hour 45 minutes, calculator on, no notes. The sample question in the IB Economics HL subject brief is useful for planning practice, but the brief prints only the question, not the data it refers to, so it cannot stand in for a full paper.

One thing worth noting before you start: practise without any formula sheet. If you pause mid-question to reconstruct an equation from scratch, that time is gone. Treat the timed run-through as a diagnostic. Identify which calculations slowed you down, then go back and drill those from memory before your next practice session.

Ask for that paper now and put the 1 hour 45 minutes in your diary.

FAQ

What is IB Economics Paper 3?

IB Economics Paper 3 is an HL-only policy paper, first assessed in 2022, in which students use provided data and quantitative techniques to produce a justified economic policy recommendation; it lasts 1 hour 45 minutes and is worth 30% of the HL grade.

How long is IB Economics Paper 3?

Paper 3 lasts 1 hour 45 minutes, the same duration as Paper 2, and is sat only by Higher Level students.

Is a formula sheet provided for IB Economics Paper 3?

You should not expect one: prepare to recall every equation from memory, and check with your teacher which calculator you can use.

What topics does IB Economics Paper 3 cover?

Paper 3 is based on all units of the IB Economics syllabus - the introductory unit, microeconomics, macroeconomics, and the global economy - including HL-only content, so no unit can be left out of revision.

How is IB Economics Paper 3 different from Papers 1 and 2?

Paper 1 is an extended-response paper (1 hr 15 min, 20% of the HL grade) and Paper 2 is a data-response paper (1 hr 45 min, 30%); Paper 3 is distinct in requiring a justified policy recommendation built from quantitative analysis of the provided data, and is HL only.

References