Income Inequality in Australia Since 1975: Trends, Drivers, and Policy Responses

Introduction

Income inequality is now of central concern in Australian economic and social policy debates. Since the 1970s, Australia has transitioned from a highly regulated labour market with strong wage compression to a more flexible, globalised economy (Leigh 2013). These structural changes have influenced the distribution of income, with inequality rising over time before plateauing in the 2010s. To document these changes and account for breaks in ABS data it was necessary to construct a data set from the available data which also mirrors the broad trajectory of published empirical research (OECD 2023).

 Data and Methodology

A synthetic dataset of Australia’s Gini coefficient (disposable income) from 1975 to 2025 was constructed to reflect well‑established historical patterns identified by the Australian Bureau of Statistics (ABS 2022) and the Productivity Commission (PC 2018). These patterns include:

• A lengthy period of stabilisation, From the mid-1970s to the early 1980s, Australia’s Gini coefficient for disposable income remained low and stable (around 0.27–0.29).
• This was followed by a gradual upward trend which began in the mid-1980s, reflecting structural economic changes, globalization, and labour market reforms.
• Sharp increase in the 1990s which saw a noticeable rise in inequality, with the Gini moving toward 0.31–0.32, consistent with ABS and PC findings on wage dispersion and household income shifts.
• The 2000s saw a plateauing in the Gini coefficient from the early 2000s to around 2010. During this period, the Gini coefficient stabilized near 0.32–0.33, reflecting strong economic growth and redistributive tax-transfer policies.

• This was followed by A COVID‑related decline in 2020.
• Finally, a post‑COVID rise to a twenty‑year high.

This data manipulation allows the construction of a consistent set of Gini coefficients over each decade as shown in Figure 1

Figure 1 Gini Coefficient peer decade

Source from constructed ABS data set

A time trend was fitted to the data. A linear time trend provided the best fit (highest R2) and indicates consistent growth of 1.4% per time. Simple projection (ceteris paribus) indicates further growth in inequality to a Gini coefficient of thirty-six by 2030.

What role did covid play?

Income inequality fell sharply in 2020 to 0.338 due to large‑scale government supports such as Job Keeper, the doubled Jobseeker payment, and stimulus payments (ACOSS & UNSW 2022) before rebounding from 2021, reaching a 20 year high by 2025 (University of Melbourne 2023).

While this was an unusual period in Australian history, and as such it is unwise to generalise, active Government intervention and income transfer played a positive role in reducing overall inequality. If this is a policy goal, more long reaching interventions are needed.

How does Australia compare?

In general inequality in Australia is

• Higher than Nordic countries
• Like the UK, Canada, and New Zealand
• Lower than the United States

Table 3 sets out Gini coefficients for Australia, the United States and Sweden

Table 3. Gini Coefficients for Australia, United States, and Sweden (2019–2025)

Source

The international comparison reveals a clear divergence in inequality outcomes across advanced economies. The United States’ high and rising Gini values reflect structural features such as weak collective bargaining, a lightly regulated labour market, and a comparatively residual welfare state. Sweden’s low inequality is consistent with its universalist welfare model, strong unions, and compressed wage structures. Australia occupies an intermediate position: while its tax‑transfer system is more redistributive than that of the United States, it lacks the extensive social protections found in Nordic countries. The post‑COVID rise in inequality across all three countries suggests that global forces — including inflation, asset price growth, and labour‑market polarisation — have exerted upward pressure on income dispersion, though the magnitude varies by institutional context.

Reversing the inequality trend

Income inequality, beyond an acceptable limit to ensure incentives for personal wealth creation promotes social dislocation, destroys incentive, and leads to economic inefficiency. It can be reversed but only on the assumption that there exists the political will to do so. There are a number of feasible policies to reduce inequality including.

1. Redistributive tax policy that includes a wealth tax an inheritance tax and which removes tax loopholes and incentives.
2. Policies designed to reduce the role of housing and property in wealth creation such as the abolition of negative gearing or its restriction (and accompanying tax deductions) to one investment property.
3. Extend wage bargaining to parts of the labour market that have no effective union coverage.
4. Increase taxation of Superannuation funds above a threshold.
5. Recognise the value of domestic and (home) production to distribute income more evenly to single income families.
6. Curb, through taxation and regulation, foreign ownership of property.

Before people shouting “bolshevism” to the above proposals, consider the reasoning behind them. The ballooning of housing costs in Australia has reached a level where the current generation is excluded from the housing market. Few would argue this is a good thing from either an economic or social perspective. The current situation has arisen, on the supply side by productivity drops in building and construction and restrictive government regulation. On the demand side, generous tax concessions promote multiple ownership of housing and extreme rent seeking from landlords. The decline in union membership has reduced countervailing pressures for fair wage negotiations as well as increasing the extent that successful unions such as in building can rent reek. The difference between costs of construction in Australia and overseas (especially China) acts to the detriment to public infrastructure in Australia and helps fuel the house price bubble, Finally, single wage household in Australia are nearing extinction with a loss of individual and child specific benefits.

Conclusion

Income inequality in Australia has risen significantly since 1975, driven by labour‑market changes, globalisation, and shifts in tax‑transfer policy. Although inequality fell during COVID‑nineteen, this decline was temporary. The post‑COVID rebound has pushed inequality to a twenty‑year high, underscoring the importance of sustained policy intervention. For all its associated problems (including the denial of basic human rights of movement and assembly to a large number of Australians), did show that Government income redistribution policies can reduce income inequality. Should reducing income inequality becoming a serious Government initiative there exists (as discussed above) a number easily administered policy levers at the Governments disposal.

Reference List

ABS (Australian Bureau of Statistics) 2022, Household income and wealth, Australia, ABS, Canberra. ACOSS & UNSW 2022, Inequality in Australia, ACOSS, Sydney.

Leigh, A 2013, Battlers, and billionaires: The story of inequality in Australia, Black Inc., Melbourne. OECD 2023, Income inequality data and trends, OECD Publishing, Paris.

PC (Productivity Commission) 2018, Rising inequality? A stocktake of the evidence, Productivity Commission, Canberra. University of Melbourne 2023,

Income Inequality in Australia, Melbourne Institute, Melbourne. Whiteford, P 2017, ‘Inequality in Australia: What do we know?’, Australian Economic Review, vol. 50, no. 3, pp. 313–323.

Annotated Bibliography

1. Saunders, P., & Wong, M.
   Examining Australian Attitudes to Inequality and Redistribution.
   This study highlights Australia’s strong cultural commitment to egalitarianism, noting that the country is widely regarded as having modest income disparities and a deeply rooted “Fair Go” ethos.
   Source: [Social Policy Research Centre, UNSW] [en.wikipedia.org]

1. Panza, L., & Williamson, J.
   Always Egalitarian? Australian Earnings Inequality c.1870.
   Historical analysis showing that Australia was significantly more equal than the U.S., UK, and Europe during the late 19th century and remained relatively egalitarian throughout the 20th century.
   Source: [ANU Centre for Economic History Discussion Paper] [cbe.anu.edu.au]

1. The Conversation.
   Unequal? Our analysis suggests Australia is a more equal society than has been thought.
   This article uses comprehensive income measures (including taxes and benefits) to argue that Australia is more equal than France and substantially more equal than the U.S.
   Source: [The Conversation] [Australia…ute.org.au]

1. Holden, R., & Leigh, A.
   Australia’s egalitarian story and its gold rush origins.
   Discusses the historical and cultural roots of Australia’s egalitarian identity, emphasizing its enduring influence on national pride and social norms.
   Source: [UNSW Business Think]