Characteristics of low-, middle- and high-income countries for VCE Health and Human Development Unit 4 AoS 1

What this dot point is asking

This dot point asks you to describe the characteristics that typically distinguish low-, middle- and high-income countries, and to use those characteristics to explain differences in health status and human development. The 2022 VCAA exam gave data for Australia, Ghana and Haiti and asked for two other characteristics that could be used to classify a country as low-income. Expect short identify or describe questions, and longer questions that ask you to link characteristics to health outcomes such as under-5 mortality and burden of disease.

How countries are classified

The World Bank classifies every economy into one of four income groups using GNI per capita (the total income earned by a country's residents, divided by population), converted to US dollars with its Atlas method. The thresholds are adjusted for inflation each year and countries are reclassified on 1 July.

Source: World Bank country and lending groups; classifications in effect from 1 July 2026 to 30 June 2027.

Countries move between groups. In the July 2026 update, the Philippines, Viet Nam, Sri Lanka, Jordan and Micronesia moved from lower-middle to upper-middle income, and Togo moved from low to lower-middle income. The World Bank linked these moves to economic growth (for example, Viet Nam's exports grew by more than 15 per cent in both 2024 and 2025) and to revised statistics (Jordan's economy was found to be 10 per cent larger than previously estimated). No country moved down.

The study design groups these four categories as low-, middle- and high-income countries. In the World Bank's September 2026 country list there are 25 low-income, 47 lower-middle-income, 59 upper-middle-income and 86 high-income economies. Most low-income countries are in sub-Saharan Africa (Ethiopia and South Sudan, for example). Middle-income countries hold about three-quarters of the world's people (about 6.0 billion of 8.2 billion in 2025), including India (lower-middle) and China (upper-middle).

Australia and its region. Australia is high-income. Its neighbours include upper-middle-income Indonesia, the Philippines, Viet Nam, Fiji, Samoa and Tonga, and lower-middle-income Papua New Guinea, Timor-Leste, Solomon Islands, Vanuatu and Kiribati, which helps explain where Australian aid is focused (see Australia's aid program).

The characteristics in numbers

The World Bank publishes averages for each income group. They show how steeply health and living conditions change across the groups.

Source: World Bank, World Development Indicators (income-group aggregates, accessed September 2026).

Reading the table:

• A child born in a low-income country is about 13 times as likely to die before age 5 as a child in a high-income country (68.8 compared with 5.1 per 1,000), and the maternal mortality ratio is about 35 times higher (346 compared with 10).
• Only a third of people in low-income countries have even basic sanitation, and fewer than half have electricity. These gaps drive diarrhoeal and other infectious disease and limit health services (vaccines need refrigeration; clinics need light and power).
• Out-of-pocket payments make up nearly half of health spending in low- and lower-middle-income countries, compared with 13.4 per cent in high-income countries, so illness can push households into poverty.
• High-income countries are older (20 per cent aged 65 and over) and have low fertility, so their burden of disease is dominated by chronic conditions of ageing.

Characteristics of low-income countries

• Low income and high poverty. GNI per capita of $1,175 or less; just over half the population (52.9 per cent) lives in extreme poverty on less than US$3.00 a day, often working in subsistence agriculture (59.4 per cent of employment in low-income countries).
• Young, fast-growing populations. High fertility (4.5 births per woman) and population growth (2.7 per cent a year), with only about 3 per cent of people aged 65 and over.
• Limited infrastructure. Poor access to safe water, sanitation and electricity; many people live in rural areas, far from health services.
• Weak health systems. Few doctors (0.3 per 1,000 people), limited medicines and equipment, and high out-of-pocket costs.
• Lower education. Lower literacy and fewer years of schooling, particularly for girls.
• Poor health status. Low life expectancy, high infant, under-5 and maternal mortality, a heavy burden from infectious disease (such as malaria, diarrhoeal disease and HIV/AIDS) and undernutrition.
• Vulnerability. Many low-income countries are affected by conflict, political instability, natural disasters and climate change, and rely on aid.
• Low human development. Most have a low HDI (see the Human Development Index).

Characteristics of middle-income countries

Middle-income countries are the largest and most varied group, ranging from lower-middle-income countries with many of the features above to upper-middle-income countries that look close to high-income.

• Growing economies with expanding industry, manufacturing and services, and rapid urbanisation (urban population rises from 42 to 68 per cent between the lower- and upper-middle groups).
• Improving but uneven access to health care, education, water and sanitation, with large gaps between urban and rural areas and between rich and poor.
• A double burden of disease: infectious disease, undernutrition and maternal and child deaths persist (especially in lower-middle-income countries: under-5 mortality 43.8 per 1,000), while chronic disease rises with longer lives, urban diets, tobacco use and physical inactivity.
• Falling fertility and ageing in upper-middle-income countries (1.5 births per woman).
• High out-of-pocket costs for health care (47.0 per cent of health spending in lower-middle-income countries).

Characteristics of high-income countries

• High income and low extreme poverty, with economies based on services and industry (agriculture employs 2.9 per cent of workers).
• Near-universal infrastructure: safe water, sanitation and electricity for almost everyone.
• Well-resourced health and education systems, often with universal health coverage (such as Medicare) and lower out-of-pocket costs.
• Good health status: high life expectancy (80.4 years), low infant and maternal mortality.
• Ageing populations with low fertility and a burden of disease dominated by chronic and lifestyle-related conditions such as cardiovascular disease, cancers, dementia and mental ill health.
• Very high human development, although inequality within the country still exists (in Australia, for example, between First Nations and non-Indigenous people).

Linking income to health and human development

Higher national income usually means more government revenue for health, education, water and sanitation, which improves health status and human development. But income is not destiny:

• Same income, different health. The United States has a higher GNI per capita than Australia (in purchasing power terms) but a life expectancy about 4.6 years lower (79.3 compared with 83.9 years in the 2025 Human Development Report), reflecting differences in health systems and inequality.
• Averages hide inequality. A country's income group says nothing about how income is distributed; poor rural or Indigenous communities in a middle- or high-income country can have health outcomes closer to those of a low-income country.
• Groups are not rigid. Countries move up (and occasionally down) as their economies change, and the thresholds themselves are adjusted each year.

How this dot point appears in the VCE exam

• Identify or outline (1 to 2 marks): characteristics of low-, middle- or high-income countries (2022 VCAA).
• Explain with data (3 to 4 marks): how a characteristic (water, sanitation, education, health systems, income) contributes to differences in health status.
• Compare or analyse (4 to 6 marks): the health profile of countries at different income levels, often with a stimulus table, linked to the epidemiological transition or to human development.