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NotesEconomicsTopic 3.6Government spending and taxation
Back to Economics Topics
3.6.11 min read

Government spending and taxation

IB Economics • Unit 3

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Contents

  • Types of government spending
  • Types of taxes
  • Expansionary and contractionary fiscal policy

🏛️ Types of Government Spending

Definition: Fiscal policy.

Government spending categories

  • Current (recurrent) spending — day-to-day spending: wages of public employees, healthcare costs, welfare payments, defence.
  • Capital spending — investment in infrastructure: roads, hospitals, schools, renewable energy projects.
  • Transfer payments — payments where no good or service is received in return: pensions, unemployment benefits, subsidies. These redistribute income but are NOT counted in GDP (no output produced).
When we write G in the AD equation (C + I + G + (X − M)), we mean government spending on goods and services — NOT transfer payments. Transfer payments increase C when recipients spend them.

💰 Types of Taxes

Direct vs indirect taxes

  • Direct tax.
  • Indirect tax.

Progressive, regressive, and proportional

  • Progressive tax — the tax rate rises as income rises. Higher earners pay a larger % of their income. Example: most income tax systems.
  • Regressive tax — takes a larger % of income from lower earners. Example: flat-rate VAT — everyone pays the same rate, but it's a bigger share of a poor person's income.
  • Proportional (flat) tax — same % regardless of income. Example: a flat 20% income tax.
In exams, link tax types to equity: progressive taxes reduce inequality (redistribute); regressive taxes worsen it.

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📊 Expansionary and Contractionary Fiscal Policy

Expansionary fiscal policy

  • Increase government spending (G↑) and/or cut taxes (T↓).
  • More disposable income → C rises. More G → AD shifts right.
  • Used to close a deflationary (recessionary) gap — boost output and reduce unemployment.
  • Leads to a budget deficit if spending exceeds tax revenue.

Contractionary fiscal policy

  • Decrease government spending (G↓) and/or raise taxes (T↑).
  • Less disposable income → C falls. Less G → AD shifts left.
  • Used to close an inflationary gap — reduce demand-pull inflation.
  • Makes the budget deficit smaller or creates a budget surplus.
Fiscal policy shifts AD — same as monetary policy. The difference: fiscal comes from the government; monetary comes from the central bank.

Related Economics Topics

Continue learning with these related topics from the same unit:

3.1.1What is GDP and how is it measured?
3.1.2Real vs nominal GDP and comparisons
3.1.3The business cycle
3.2.1Aggregate demand
View all Economics topics

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Command terms, paper structure, and mark-scheme tips for Economics

IB Exam Questions on Government spending and taxation

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How Government spending and taxation Appears in IB Exams

Examiners use specific command terms when asking about this topic. Here's what to expect:

Define

Give the precise meaning of key terms related to Government spending and taxation.

AO1
Describe

Give a detailed account of processes or features in Government spending and taxation.

AO2
Explain

Give reasons WHY — cause and effect within Government spending and taxation.

AO3
Evaluate

Weigh strengths AND limitations of approaches in Government spending and taxation.

AO3
Discuss

Present arguments FOR and AGAINST with a balanced conclusion.

AO3

See the full IB Command Terms guide →

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3.5.3Evaluation and limitations
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