Economic Inequality refers to unequal distributions of economic resources among individuals, households or groups. The main resources studied are income, wealth, earnings, consumption and sometimes broader measures of economic security. Income represents flows received over a period, while wealth represents accumulated assets minus liabilities. Earnings generally refer to income derived from employment or work. These distinctions are essential because economic position cannot be captured accurately by a single measure. A household may have high annual earnings but low accumulated wealth, while another may have modest earnings but substantial property and financial assets. Economic Inequality therefore concerns multiple dimensions of material resources and requires clear definitions of the resource and population being compared.
Income inequality concerns differences in the amount of income received by individuals or households. Income can originate from employment, self employment, investments, pensions, transfers and other sources. Researchers may examine market income before taxes and transfers or disposable income after taxes and transfers. The distinction is important because taxation and social security can substantially alter the distribution of resources available for consumption. Household income is also often adjusted for household size because a larger household requires more resources to achieve a comparable standard of living. Measures of income inequality therefore depend partly on whether the analysis concerns individuals, households, gross income, net income, equivalised income or another defined measure.
Wealth Inequality concerns differences in accumulated assets and liabilities. Major forms of wealth include owner occupied housing, financial investments, business ownership, pensions and savings, while liabilities include mortgages, loans and other debts. Wealth is often distributed more unevenly than annual income because assets accumulate over time and can generate further returns. Inheritance can transfer wealth across generations, allowing existing economic advantages to persist.
Housing is particularly important in many societies because property can represent a substantial share of household net worth. Wealth also provides security during unemployment or illness and can finance education, entrepreneurship or housing for younger generations, making its influence broader than the immediate consumption capacity represented by income.
Economic Inequality has multiple causes that operate at different levels. Labour market institutions affect wages and employment conditions, while differences in education, skills and occupational demand influence earnings. Ownership of capital generates returns through property, businesses and financial assets. Inheritance transmits wealth between generations, while taxation and social security alter disposable resources. Technological change can increase demand for particular skills and reduce demand for others, contributing to changes in wage structures. Globalisation, industrial restructuring, unionisation, minimum wage policy, housing markets and demographic change can also affect distributions. No single factor explains all economic inequality because these mechanisms interact across households and over time.
Economic Inequality is closely related to Social Inequality but the concepts are not identical. Economic inequality concerns material resources, while social inequality can additionally involve status, power, rights, education, health and access to institutions. Economic resources can contribute to other inequalities because wealth can influence educational opportunities, residential location, political participation and access to services. Conversely, social inequalities can influence economic outcomes through discrimination, occupational segregation, unequal educational opportunities and differences in access to networks. The relationship is therefore reciprocal. A comprehensive analysis examines how economic resources interact with social institutions rather than treating income or wealth as isolated variables.
Economic Inequality can be measured using several statistical approaches. The Gini coefficient summarises inequality across a distribution, while percentile ratios compare specified points such as the income of people near the top with that of people near the bottom. Shares of total income or wealth held by particular population groups provide another approach. Median income describes the middle of a distribution but does not itself measure inequality. Mean and median can diverge substantially when distributions are skewed. Measurement choices matter because different indicators capture different features. Wealth surveys also face difficulties because very high wealth can be concentrated among a small number of households and may be difficult to measure accurately.
Economic Inequality has consequences for living standards, economic security and intergenerational opportunity. Large differences in resources can produce differences in housing quality, ability to withstand financial shocks, educational opportunities, access to transport and capacity to accumulate further assets. Wealth can generate returns, creating cumulative advantages over time. At the same time, inequality should not be confused with poverty. Poverty concerns insufficient resources according to a defined threshold or standard, whereas inequality concerns the distribution of resources across a population. A society can have low poverty and still have substantial inequality, or high inequality alongside relatively low average income.
Economic Inequality is influenced by government policy and institutional arrangements, including taxation, social security, education, healthcare, housing policy, labour regulation and inheritance rules. Redistribution can alter disposable income and access to services, while public investment can influence opportunities independently of cash transfers. Labour market institutions can affect wage distributions, and housing policy can influence the accumulation of property wealth. International comparisons require caution because countries differ in taxation, household composition, public services, labour markets and measurement methods. Economic Inequality is therefore best understood through precise evidence about income, earnings, wealth and consumption, combined with analysis of the institutions and historical processes that determine how economic resources are generated, distributed, accumulated and transmitted between generations.
