What is 1. Employment status?

Employment is the single biggest determinant. Households where no adult is employed have far lower incomes than dual-earner households.

What is 2. Hours worked?

The rise of part-time and casual employment, especially among women, contributes to household-level inequality.

What are 3. Education and skills?

University graduates earn around 70 percent more over their working lives than those with year 12 only (Grattan Institute).

What is 4. Occupation and industry?

Finance, mining and ICT pay well above the average; retail, hospitality and personal care pay below.

What are 5. Capital and asset returns?

Capital gains from housing and equities accrue disproportionately to those who already own assets.

What is 6. Geography?

Sydney and Melbourne earnings are 15 to 20 percent above the national average; remote and regional areas earn below.

What are 7. Demographic factors?

Indigenous Australians, recent migrants and people with disability have substantially lower median incomes.

What is 8. Tax and transfer system?

Progressive income tax and means-tested transfers (Age Pension, JobSeeker, Family Tax Benefit) reduce the Gini from around 0.45 (market income) to around 0.32 (disposable income). One of the most redistributive systems in the OECD.

What is always distinguish income from wealth explicitly?

State which one your statistic refers to; markers reward the phrase "in terms of wealth" or "in terms of income" because it shows you understand they move differently.

What is anchor every claim with a dated figure?

Replace "Australia is fairly equal" with "Australia's after-tax Gini is about 0.32 (ABS, 2024 indicative), the middle of the OECD range." A number with a year outscores a vague claim every time.

§-Syllabus dot point

NSWEconomicsSyllabus dot point

What are the major economic issues for the Australian economy and how are they measured?

Examine the issue of distribution of income and wealth in Australia including the measurement of inequality, the Lorenz curve and the Gini coefficient, dimensions and trends in inequality, and the economic and social impacts of inequality

A focused HSC Economics Topic 3 answer on inequality. Distinguishes income from wealth, draws and reads the Lorenz curve, defines the Gini coefficient, identifies the sources of inequality in Australia, and analyses recent ABS Survey of Income and Housing trends.

Generated by Claude Opus 4.87 min answerUpdated 2026-06-17

Reviewed by: AI editorial process; not yet individually human-reviewed

Have a quick question? Jump to the Q&A page

Jump to a section

What this dot point is asking
The answer
Common HSC traps

In plain English

Imagine five friends order a 100 slice pizza between them and it gets shared unevenly. If everyone got exactly 20 slices, that would be "perfect equality" - a straight 45 degree line on a graph. In real life the person who already has the most money, education and job usually grabs the biggest slice, so the poorest friend might only get 7 slices while the richest gets 40. The Lorenz curve is just a picture of how the slices actually got shared, and the Gini coefficient is a single number (0 to 1) that measures how far the real sharing bows away from the "everyone gets 20" line - the more it bows, the more unequal the split. Income is like the slices handed out THIS week (wages, welfare payments); wealth is more like who already owns the pizza oven, the shop and the delivery van - the pile of stuff built up over a lifetime. Australia's income slices are shared moderately evenly by world standards (helped a lot by tax and Centrelink payments topping up the poorest and taxing the richest more), but the "who owns the oven" picture (wealth) is much more lopsided, mostly because owning a house that has gone up in value is worth far more than a wage packet.

What this dot point is asking

NESA wants you to distinguish income from wealth, explain the Lorenz curve and Gini coefficient, describe the dimensions of inequality in Australia, identify the sources, and analyse the economic and social impacts. Expect a 5 to 7 mark short answer requiring a Lorenz curve diagram.

The answer

Income vs wealth

Income is a flow concept: payments received over a period of time (wages, salaries, profits, dividends, interest, rents, government transfers).

Wealth is a stock concept: the value of assets owned (housing, superannuation, shares, businesses) less liabilities (mortgages, credit card debt).

The two are related but not identical: a retiree may have substantial wealth (a house, super balance) but low current income. A young high-earner may have high income but little accumulated wealth.

Australia (and most countries) has much greater inequality of wealth than of income. The top 20 percent of households hold around 60 percent of wealth but earn around 40 percent of income (ABS Survey of Income and Housing).

Measurement: the Lorenz curve

The Lorenz curve plots cumulative income share against cumulative population share, ranked from lowest to highest income.

The 45 degree line represents perfect equality (the bottom 10 percent of households earn 10 percent of income, etc.). The actual Lorenz curve bows below the diagonal; the further from the diagonal, the greater the inequality.

The Gini coefficient

The Gini coefficient is the area between the Lorenz curve and the 45 degree line, divided by the total area below the 45 degree line.

\text{Gini} = \frac{\text{Area between line of equality and Lorenz curve}}{\text{Total area below line of equality}}

Gini ranges from 0 (perfect equality) to 1 (perfect inequality, where one household has all income).

International comparison (2024 indicative, OECD/World Bank):

Country	Gini coefficient (after tax)
Slovakia, Norway, Denmark	0.25
Sweden, Germany, France	0.28 to 0.30
Australia	0.32
United Kingdom	0.35
United States	0.41
South Africa	0.63

Australia's Gini sits roughly in the middle of OECD countries. It is around 0.32 after tax and transfers (ABS Survey of Income and Housing, latest release).

Income inequality in Australia

The ABS Survey of Income and Housing (cat. no. 6523.0) is the canonical source. Indicative figures (using equivalised disposable household income):

Quintile	Share of income
Lowest 20%	7%
Second 20%	13%
Middle 20%	18%
Fourth 20%	23%
Highest 20%	39%

The top 20 percent of households earn about 5.6 times the average disposable income of the bottom 20 percent.

Wealth inequality

Wealth is much more unequally distributed:

Quintile	Share of household wealth
Lowest 20%	1%
Second 20%	5%
Middle 20%	12%
Fourth 20%	22%
Highest 20%	60%

The top 1 percent of households hold around 17 percent of all wealth (Productivity Commission). Housing is the largest single asset for most Australians and the largest source of wealth inequality.

Sources of inequality

1. Employment status: Employment is the single biggest determinant. Households where no adult is employed have far lower incomes than dual-earner households.
2. Hours worked: The rise of part-time and casual employment, especially among women, contributes to household-level inequality.
3. Education and skills: University graduates earn around 70 percent more over their working lives than those with year 12 only (Grattan Institute).
4. Occupation and industry: Finance, mining and ICT pay well above the average; retail, hospitality and personal care pay below.
5. Capital and asset returns: Capital gains from housing and equities accrue disproportionately to those who already own assets.
6. Geography: Sydney and Melbourne earnings are 15 to 20 percent above the national average; remote and regional areas earn below.
7. Demographic factors: Indigenous Australians, recent migrants and people with disability have substantially lower median incomes.
8. Tax and transfer system: Progressive income tax and means-tested transfers (Age Pension, JobSeeker, Family Tax Benefit) reduce the Gini from around 0.45 (market income) to around 0.32 (disposable income). One of the most redistributive systems in the OECD.

Trends

Australian income inequality has been relatively stable over the past two decades (Gini 0.32 to 0.34), in contrast to the US (rising) and many European economies. However:

Wealth inequality has risen. Housing price gains have benefited existing homeowners (older, wealthier) at the expense of renters (younger, lower-wealth).
Intergenerational inequality has widened. Younger cohorts hold lower wealth and face higher housing costs than at the same age 20 years ago (Productivity Commission, Wealth of Generations 2023).
The gender pay gap is around 13 percent (WGEA 2024), down from around 17 percent a decade ago.
Indigenous gap. Indigenous median household income is around 60 percent of non-Indigenous (AIHW).

Economic impacts of inequality

Negative:

Lower aggregate demand growth. Lower-income households have a higher marginal propensity to consume. Redistribution upward reduces total consumption.
Lower social mobility. High inequality reduces equality of opportunity, dragging on long-run growth (OECD, "Divided We Stand" 2011, 2015 updates).
Lower human capital investment. Children from low-income households face worse educational and health outcomes.
Financial instability. High inequality is associated with rising household debt as middle-income groups borrow to maintain consumption (BIS research).

Positive (in moderation):

Incentives for skill acquisition. Returns to education and effort encourage human capital investment.
Incentives for risk-taking. Returns to entrepreneurship encourage innovation.
Capital accumulation. Wealth inequality can mean concentrated savings available for investment.

Social impacts of inequality

Poverty. Around 13 percent of Australians live in relative poverty (less than 50 percent of median income; ACOSS/UNSW Poverty in Australia report).
Health inequalities. Life expectancy gap of around 6 years between the highest and lowest socioeconomic quintiles (AIHW).
Education inequalities. University attendance rates differ sharply between low-SES and high-SES areas.
Housing stress. Around 30 percent of low-income renters are in rental stress (paying more than 30 percent of income on rent).
Social cohesion. Higher inequality is associated with lower social trust and political polarisation.

Government redistribution

Australia's tax-transfer system is among the most redistributive in the OECD:

Progressive income tax with rates from 0 to 47 percent (including Medicare levy).
Means-tested transfers: Age Pension, JobSeeker, Disability Support Pension, Family Tax Benefit.
Free or subsidised services: Medicare, public schools, public housing.
Compulsory superannuation: 12 percent of wages from 1 July 2025.

These reduce the Gini coefficient by around 0.13 (from market-income Gini of 0.45 to disposable-income Gini of 0.32).

Key fact

The Lorenz curve and Gini, in one line. The Lorenz curve plots cumulative income share (y-axis) against cumulative population share ranked poorest to richest (x-axis); the 45 degree line is perfect equality.

\text{Gini} = \frac{\text{Area between line of equality and Lorenz curve}}{\text{Total area below line of equality}}

Gini runs from 0 (perfect equality) to 1 (perfect inequality). Memorise Australia's two headline numbers, each with its year: the after-tax income Gini is about 0.32 (ABS Survey of Income and Housing, 2024 indicative release), roughly middle of the OECD; the market-income Gini (before tax and transfers) is about 0.45, so the tax-transfer system cuts the Gini by around 0.13. Wealth is always more concentrated than income: the top 20 percent hold about 60 percent of wealth but only about 40 percent of income.

Worked exam answers

Worked example 1 - short answer with a Lorenz curve diagram (6 marks)

Question. Using a Lorenz curve and the Gini coefficient, explain how income inequality is measured in Australia.

Model answer. The Lorenz curve plots the cumulative share of income (vertical axis) against the cumulative share of households, ranked from poorest to richest (horizontal axis). If income were shared perfectly equally, the curve would be the 45 degree line of equality; in Australia the actual curve bows below this line, showing the poorest 20 percent of households earn about 7 percent of income while the richest 20 percent earn about 40 percent (ABS Survey of Income and Housing, 2024 indicative). The Gini coefficient converts this gap into a single number: the area between the line of equality and the Lorenz curve, divided by the total area under the line of equality, giving a value between 0 (perfect equality) and 1 (perfect inequality). Australia's after-tax Gini is about 0.32, moderate by OECD standards, reduced from a market-income Gini of about 0.45 by progressive tax and means-tested transfers.

Marker's note: a top response draws (or fully describes) the diagram correctly, states the Gini formula and Australia's dated value, and links the gap between the market and disposable Gini to the tax-transfer system. A definition with no diagram, or a diagram with no data, stays mid-band.

Worked example 2 - a data/stimulus response (5 marks)

Question. The table shows Australian household quintile shares of income and wealth (2024 indicative): income 7%, 13%, 18%, 23%, 39%; wealth 1%, 5%, 12%, 22%, 60%. Describe the difference between the two distributions and explain why wealth is more unequally distributed than income.

Model answer. Both distributions rise steadily from the lowest to the highest quintile, but wealth rises far more steeply: the top quintile holds 60 percent of wealth against 39 percent of income, while the bottom quintile holds only 1 percent of wealth against 7 percent of income - a gap of about 21 percentage points at the top versus about 6 at the bottom. Wealth is more concentrated because it is a stock built up over a lifetime through home ownership, superannuation and shares, and asset prices (especially housing) have grown strongly, benefiting households that already own assets far more than those still saving a deposit; income, by contrast, is a flow that is topped up every year by minimum wages, awards and means-tested transfers, which compress the bottom of the distribution.

Marker's note: about 2 marks for an accurate comparison with figures at both ends, about 2 marks for the stock-versus-flow explanation linked to the data, and 1 mark for naming a mechanism (asset price growth, home ownership). A comparison with no explanation, or an explanation that never cites the data, caps at 3.

Worked example 3 - extended response (analyse, 20 marks)

Question. Analyse the economic and social impacts of income and wealth inequality in Australia, and assess the effectiveness of government policies in addressing it.

Band 6 plan.

Thesis: Inequality in Australia is moderate on income but pronounced on wealth, and while some inequality provides efficient incentives, the current scale generates economic drag and social costs that government policy only partially offsets.

Argument 1 - economic costs via aggregate demand and mobility. Lower-income households have a higher marginal propensity to consume, so persistent inequality can slow consumption-led growth (link to the circular flow of income); the OECD ("Divided We Stand") links high inequality to lower social mobility and weaker long-run growth through under-investment in human capital.

Argument 2 - social costs are concrete and dated. About 13 percent of Australians live in relative poverty (ACOSS/UNSW), there is a roughly 6-year life-expectancy gap between the highest and lowest socioeconomic quintiles (AIHW), and around 30 percent of low-income renters face rental stress - costs that compound because wealth inequality (housing gains accruing to existing owners) has widened intergenerational inequality.

Argument 3 - policy effectiveness, evaluated not just described. Australia's progressive income tax (0 to 47 percent including the Medicare levy) and means-tested transfers (Age Pension, JobSeeker, Family Tax Benefit) cut the Gini from about 0.45 (market income) to about 0.32 (disposable income) - among the most redistributive systems in the OECD - but they redistribute income far more effectively than wealth, since housing tax concessions (capital gains discount, negative gearing) and compulsory superannuation (12 percent of wages from 1 July 2025) mostly benefit those who already own assets.

Counter-weight / judgement: some inequality is efficient (returns to education and entrepreneurship encourage skill acquisition and risk-taking), so the goal is not zero inequality; conclude that Australia manages income inequality well by OECD standards but wealth inequality is the harder, still-growing problem current policy addresses only partially.

Model paragraph (Argument 3). The clearest test of Australian redistribution is the gap between the market-income Gini and the disposable-income Gini: tax and transfers pull the coefficient down from about 0.45 to about 0.32, a reduction of roughly 0.13 that places Australia among the more redistributive OECD economies. This works because the income tax scale is progressive (0 to 47 percent including the Medicare levy) and transfers such as the Age Pension, JobSeeker and Family Tax Benefit are means-tested, so they are concentrated on lower-income households. The same cannot be said for wealth: the capital gains tax discount and negative gearing concessions overwhelmingly benefit taxpayers who already own investment property, and even compulsory superannuation, while it broadens saving, compounds fastest for those with the highest and most continuous incomes. The result is a policy mix that is well-targeted at income inequality but comparatively blunt on wealth inequality, which is precisely why wealth inequality has kept rising even as income inequality has stayed broadly flat.

Marker's note: top-band responses ANALYSE (link cause to a mechanism - MPC and aggregate demand, asset price growth and ownership) rather than list impacts; EVALUATE policy (show income and wealth are affected differently) rather than describe programs; cite CURRENT, DATED Australian figures (the 0.32 and 0.45 Gini values, the ~13 percent poverty rate, the 12 percent superannuation guarantee from 1 July 2025); and reach an explicit, calibrated judgement. A response that only describes inequality with no policy evaluation, or evaluates policy with no data, cannot reach the top band.

Common traps

Confusing income with wealth: Always specify which; a Lorenz curve or Gini value for income is not the same number as for wealth, and examiners reward the distinction explicitly.
Drawing the Lorenz curve incorrectly: The horizontal axis is cumulative population share (poorest first); the vertical axis is cumulative income share. Both axes run from 0 to 100 percent, and the curve must start at the origin and end at (100, 100) - a curve that crosses the line of equality or does not close at the corners is wrong.
Forgetting that Australia is moderately equal by OECD standards: Many students assume Australia is highly unequal; in fact the tax-transfer system substantially reduces market-income inequality (Gini falls from about 0.45 to about 0.32), and Australia's after-tax Gini sits below the UK and well below the US.
Describing the Gini gap without stating the mechanism: "The Gini is higher because of inequality" is circular. Say WHY: employment status, education, capital ownership and geography drive the underlying gap; tax and transfers narrow it.
Treating "some inequality" as automatically bad: A top-band evaluation notes that moderate inequality can provide efficient incentives (returns to education, entrepreneurship) - the judgement should be about the SCALE and TREND of inequality, not inequality per se.

Exam technique

Match the command word: "Explain how inequality is measured" wants the Lorenz curve and Gini definition; "analyse the impacts" wants economic AND social impacts with a mechanism each; "assess/evaluate the effectiveness of policy" wants a judgement, not just a list of programs.
Always distinguish income from wealth explicitly: State which one your statistic refers to; markers reward the phrase "in terms of wealth" or "in terms of income" because it shows you understand they move differently.
Anchor every claim with a dated figure: Replace "Australia is fairly equal" with "Australia's after-tax Gini is about 0.32 (ABS, 2024 indicative), the middle of the OECD range." A number with a year outscores a vague claim every time.
For a data/stimulus item, describe THEN explain THEN imply: First state the trend with the actual figures (both endpoints, direction, whether it is steady or reverses), then explain using economic theory or a mechanism (MPC, asset price growth, tax-transfer effects), then say what it implies for a policy judgement.

Common HSC traps

Confusing income with wealth: Always specify which.
Drawing the Lorenz curve incorrectly: The horizontal axis is cumulative population (poorest first); the vertical axis is cumulative income share. Both axes run from 0 to 100 percent.
Forgetting that Australia is moderately equal by OECD standards: Many students assume Australia is highly unequal; in fact the tax-transfer system substantially reduces market-income inequality.

Exam-style practice questions

Practice questions written in the style of NESA exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.

2023 HSC6 marksUsing a Lorenz curve and the Gini coefficient, explain how the distribution of income is measured and analyse the trends in income and wealth inequality in Australia.

Show worked answer →

A 6 mark response needs the diagram and definitions, then a trend analysis distinguishing income from wealth.

Lorenz curve: Plots cumulative income share (vertical axis) against cumulative population share ranked poorest to richest (horizontal axis). The 45-degree line is perfect equality; the actual curve bows below it, and the further it bows the greater the inequality.
Gini coefficient: The area between the line of equality and the Lorenz curve divided by the total area below the line of equality, on a scale from 0 (perfect equality) to 1 (perfect inequality). Australia's after-tax income Gini is around 0.32, in the middle of the OECD.
Income trend: Income inequality has been relatively stable over the past two decades (Gini around 0.32 to 0.34), unlike the rising trend in the United States.
Wealth trend: Wealth is far more unequal (the top 20 percent hold around 60 percent of wealth versus around 40 percent of income) and wealth inequality has risen, driven by housing price gains that benefit existing owners over renters, widening intergenerational inequality.

Markers reward (1) a correctly drawn Lorenz curve, (2) the Gini definition and Australia's value, (3) the income-versus-wealth distinction, (4) a specific trend with data.

2024 HSC5 marksAnalyse the economic and social impacts of income and wealth inequality in Australia.

Show worked answer →

A 5 mark response covers both economic and social impacts, with a balanced view.

Economic, negative: Lower-income households have a higher marginal propensity to consume, so high inequality can reduce aggregate demand growth. High inequality also reduces social mobility and human capital investment, dragging on long-run growth (OECD).
Economic, positive (in moderation): Returns to education, effort and entrepreneurship provide incentives for skill acquisition, risk-taking and innovation.
Social: Relative poverty affects around 13 percent of Australians; there are health gaps (a life-expectancy gap of around 6 years between the highest and lowest socioeconomic quintiles), education gaps, and housing stress among low-income renters.
Redistribution: Australia's progressive tax-and-transfer system is among the most redistributive in the OECD, cutting the Gini from around 0.45 (market income) to around 0.32 (disposable income).

Markers reward (1) at least one economic and one social impact, (2) the MPC and aggregate-demand link, (3) recognition that some inequality provides incentives, (4) the role of the tax-transfer system.

Practice questions

Original practice questions graded from foundation to exam level, each with a full worked solution. Try them before revealing the solution.

foundation4 marksDistinguish between income and wealth, and give one Australian example of each that illustrates the difference.

Show worked solution →

A 4-mark "distinguish and exemplify" needs both definitions and a fitting Australian example each.

Income (2 marks: 1 definition, 1 example). Income is a flow - payments received over a period of time (wages, salaries, transfers, dividends, interest, rent). Example: a full-time graduate earning a salary from employment.

Wealth (2 marks: 1 definition, 1 example). Wealth is a stock - the value of assets owned less liabilities, measured at a point in time (housing, superannuation, shares). Example: a retiree who owns their home outright and holds a large superannuation balance but has low current income.

Full marks require BOTH concepts defined as flow versus stock and a specific (not generic) Australian example for each.

foundation5 marksExplain how the Lorenz curve is constructed and how it is used to compare countries' income distributions.

Show worked solution →

A 5-mark "explain" needs the construction method plus the comparison rule.

Construction (about 3 marks). Households are ranked from lowest to highest income; the horizontal axis plots cumulative population share (0 to 100 percent) and the vertical axis plots the cumulative share of income those households hold. The 45 degree line is perfect equality; the actual curve is plotted by joining the cumulative income shares at each population share (e.g. plotting the point where the poorest 20 percent of households hold 7 percent of income).

Comparison rule (about 2 marks). The further the curve bows away from (below) the line of equality, the greater the inequality; comparing two countries' curves on the same axes, whichever curve is closer to the diagonal is the more equal distribution. This is the visual basis for the Gini coefficient, which converts the bow into a single number.

Markers reward the correct axis definitions, the ranking rule (poorest to richest), and the "further from the diagonal = more unequal" comparison principle.

core5 marksA described dataset (owned, ExamExplained, modelled on the ABS Survey of Income and Housing, 2024 indicative) shows Australian household income quintile shares: Q1 (lowest) 7%, Q2 13%, Q3 18%, Q4 23%, Q5 (highest) 39%. Calculate the ratio of the highest to the lowest quintile's income share, and explain what this indicates about income inequality in Australia.

Show worked solution →

A 5-mark "calculate and explain" rewards the correct calculation with working, plus an explanation that goes beyond restating the number.

Calculate (about 2 marks).

\text{Ratio} = \frac{39}{7} \approx 5.6

The highest-earning quintile's share of income is about 5.6 times the lowest-earning quintile's share.

Explain (about 3 marks). A ratio around 5.6 indicates a moderate degree of income inequality: substantially unequal in absolute terms, but far less extreme than countries with weak redistribution (e.g. the United States, Gini about 0.41) because Australia's progressive tax and means-tested transfer system compresses the gap between market income and disposable income (cutting the Gini from about 0.45 to about 0.32). The ratio also understates the full picture because it ignores wealth, which is even more concentrated (the top quintile holds about 60 percent of wealth).

Marking spine: correct ratio with working shown (2), the ratio linked to a judgement about the DEGREE of inequality (2), and a caveat distinguishing income from the more unequal wealth picture (1). A bare number with no interpretation caps at 2.

core6 marksUsing the Lorenz curve and Gini coefficient, analyse why wealth is more unequally distributed than income in Australia.

Show worked solution →

A 6-mark "analyse... why" needs the measurement tools correctly applied AND a causal explanation, not just a repeated definition.

Apply the tools (about 2 marks). A Lorenz curve for Australian wealth bows further from the line of equality than the income Lorenz curve; correspondingly, the wealth Gini (unofficial estimates around 0.6, based on Productivity Commission wealth-quintile data) is well above the income Gini of about 0.32.

Explain the causal difference (about 4 marks). Income is a FLOW that is refreshed every pay cycle and compressed at the bottom by minimum wages, awards and means-tested transfers (JobSeeker, Family Tax Benefit); the tax-transfer system directly targets income. Wealth is a STOCK accumulated over a lifetime, concentrated by (i) compounding - existing asset owners benefit from capital gains on housing and shares that non-owners cannot access, (ii) housing specifically, where price growth over decades has widened the gap between owners and renters, and (iii) intergenerational transfer (inheritance), which passes accumulated wealth to already-advantaged households. Because policy (income tax, transfers) targets the flow, not the stock, wealth inequality is structurally harder to correct and has continued to widen even while income inequality has stayed broadly stable.

Marking spine: correct Lorenz/Gini comparison (2), at least two distinct mechanisms (compounding/asset growth, policy asymmetry, inheritance) explicitly explaining the GAP (3), and a link back to the measurement tools (1). A list of facts about wealth with no explicit "why more unequal than income" reasoning stays mid-band.

core6 marksIdentify three sources of income and wealth inequality in Australia, and explain how each contributes to the gap between the highest and lowest quintiles.

Show worked solution →

A 6-mark "identify and explain" needs three DISTINCT sources with a mechanism, not just three labels.

Employment status and hours worked (2 marks): Households with no employed adult, or only part-time/casual work, receive far less income than dual-earner, full-time households; the rise of part-time and casual employment (especially among women) widens the household-level gap.
Education and skills (2 marks): University graduates earn around 70 percent more over their working lives than those with Year 12 only (Grattan Institute), so differences in educational attainment translate directly into differences in lifetime income and, through savings, wealth.
Capital and asset returns (2 marks): Capital gains from housing and shares accrue disproportionately to households that already own assets, so existing wealth compounds faster than wages can close the gap - the single biggest driver of the WEALTH gap specifically, as distinct from the income gap.

Marking spine: 2 marks per source (1 for correct identification, 1 for a mechanism linking it to the quintile gap); three DIFFERENT sources required for full marks; a fourth or more analysed with a mechanism can substitute for a weaker one.

exam20 marksAnalyse the economic and social impacts of income and wealth inequality in Australia, and evaluate the effectiveness of government policies in reducing this inequality.

Show worked solution →

A 20-mark extended response (Section III/IV style) needs a sustained, judged argument across impacts AND policy, not two separate lists.

Band 6 PLAN.

Thesis: Australia's income inequality is moderate and has been stabilised by a strongly redistributive tax-transfer system, but wealth inequality is more severe and has continued to widen because current policy targets income flows far more effectively than asset stocks, leaving real economic and social costs only partly addressed.

Argument 1 - economic impacts operate through aggregate demand and long-run growth. Evidence: Australia's after-tax Gini is about 0.32 (ABS, 2024 indicative) against a market-income Gini of about 0.45. Mechanism: lower-income households have a higher marginal propensity to consume, so a more unequal distribution of a given national income can reduce aggregate consumption and slow demand-side growth (a circular-flow argument); OECD research links high inequality to lower social mobility and weaker long-run human-capital-driven growth.

Argument 2 - social impacts are concrete and unevenly distributed. Evidence: about 13 percent of Australians live in relative poverty (ACOSS/UNSW), a roughly 6-year life-expectancy gap exists between the highest and lowest socioeconomic quintiles (AIHW), and about 30 percent of low-income renters face rental stress. Mechanism: these social costs compound with wealth inequality, since renters (typically younger, lower-wealth) miss the capital gains that owners (typically older, wealthier) capture, widening intergenerational inequality.

Argument 3 - policy is effective on income, weaker on wealth (the evaluative core). Evidence: progressive income tax (0 to 47 percent including the Medicare levy) and means-tested transfers cut the Gini by about 0.13; compulsory superannuation rose to 12 percent of wages from 1 July 2025. Mechanism/evaluation: these tools are well-targeted at the income FLOW, but the capital gains tax discount and negative gearing concessions on investment property disproportionately benefit existing asset owners, and superannuation compounds fastest for continuously high earners - so the same policy mix that narrows income inequality does comparatively little to narrow wealth inequality, which is why wealth concentration (the top quintile's approximately 60 percent share) has persisted.

Counter-weight / judgement: moderate inequality is not costless to remove and is not purely negative - returns to education and entrepreneurship provide efficiency incentives - so the policy goal is not zero inequality; conclude that Australia's redistribution is comparatively effective on income but wealth inequality remains the harder, still-unresolved problem.

Model paragraph (Argument 3). The sharpest test of Australia's redistributive policy is not whether it reduces inequality overall, but which TYPE of inequality it reaches. On income, the evidence is strong: a progressive tax scale running to 47 percent (including the Medicare levy) combined with means-tested transfers such as the Age Pension, JobSeeker and Family Tax Benefit pulls the Gini coefficient down from about 0.45 (market income) to about 0.32 (disposable income), a reduction of roughly 0.13 that places Australia among the more redistributive OECD economies. On wealth, the same policy architecture is far less effective: the capital gains tax discount and negative gearing concessions on investment property are concentrated among households that already own assets, and even compulsory superannuation, lifted to 12 percent of wages from 1 July 2025, compounds fastest for those with the highest and most continuous incomes. The consequence is a redistribution system asymmetric by design - strong on the income flow, weak on the wealth stock - which explains why the top quintile's approximately 60 percent share of wealth has proven far more persistent than the corresponding, more moderate, 40 percent share of income.

Marker's note: markers reward genuine ANALYSIS (a mechanism linking cause to impact, not description) across BOTH economic and social impacts; an EVALUATION of policy that distinguishes its effectiveness on income versus wealth rather than simply listing programs; CURRENT, DATED Australian data throughout (Gini values with "2024 indicative" or ABS/AIHW years, the 12 percent superannuation guarantee "from 1 July 2025"); and a calibrated, explicit judgement. A response that treats "reducing the Gini" as automatically wholly good (ignoring incentive effects), or that never distinguishes income policy from wealth policy, cannot reach the top band.