Income inequality: Atkinson index in Tonga
Tonga: Income inequality: Atkinson index was 0.2074 in 2023. ▼ Falling
Income inequality: Atkinson index in Tonga, 2010–2023
Source: UNDP, Human Development Report (2025) – with minor processing by Our World in Data.
Analysis
The most recent figure for income inequality: atkinson index in Tonga is 0.2074, measured in 2023. That is the lowest value across all 14 years on record.
That represents a change of down 13.8% over ten years.
Over the whole period, income inequality: atkinson index in Tonga peaked at 0.2406 in 2010 and was at its lowest, 0.2074, in 2015.
That places Tonga 112th out of 174 countries with data for 2023, putting it in the middle of the range.
The long-run direction has been consistently falling across the 14 years of available data.
Income inequality: Atkinson index in Tonga, year by year
| Year | Value | Change |
|---|---|---|
| 2010 | 0.2406 | — |
| 2011 | 0.2406 | +0.0% |
| 2012 | 0.2406 | +0.0% |
| 2013 | 0.2406 | +0.0% |
| 2014 | 0.2406 | +0.0% |
| 2015 | 0.2074 | -13.8% |
| 2016 | 0.2074 | +0.0% |
| 2017 | 0.2074 | +0.0% |
| 2018 | 0.2074 | +0.0% |
| 2019 | 0.2074 | +0.0% |
| 2020 | 0.2074 | +0.0% |
| 2021 | 0.2074 | +0.0% |
| 2022 | 0.2074 | +0.0% |
| 2023 | 0.2074 | +0.0% |
Tonga compared with similar countries
- Tonga's 0.2074 is below the median for upper middle income countries, which is 0.2515, 82% of the median. (51 countries reporting)
- Tonga's 0.2074 is below the median for East Asia & Pacific, which is 0.2171, 96% of the median. (29 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 0.224 | 0.2074 | 0.2406 | 10 |
| 2020s | 0.2074 | 0.2074 | 0.2074 | 4 |
Countries ranked near Tonga
More poverty & inequality data for Tonga
- Number of income/consumption surveys in the past decade available via the World Bank 1 surveys (2025)
- Number of income/consumption surveys in the past decade available via 0 surveys per person (2025)
- Number of income/consumption surveys in the past decade available via 0 surveys per US$ of GDP (2025)
- Fertility rate vs. share living in extreme poverty 3.13 live births per woman (2023)
- Tax revenues vs income inequality, gaps filled 22.19 (2023)
- Tax revenue as share of GDP vs. income inequality 22.2% (2023)
- Tax revenues vs income inequality, per unit of GDP 0 units per US$ of GDP (2023)
- Tax revenues vs income inequality, annual growth rate -4.08 % change on previous year (2023)
- Number of income/consumption surveys in the past decade available via -50 % change on previous year (2025)
- Gender Inequality Index 0.444 (2023)
Frequently asked questions
- What is income inequality: atkinson index in Tonga?
- Income inequality: atkinson index in Tonga was 0.2074 in 2023, according to UNDP, Human Development Report (2025) – with minor processing by Our World in Data.
- What is the highest income inequality: atkinson index recorded in Tonga?
- The highest recorded value was 0.2406 in 2010.
- What is the lowest income inequality: atkinson index recorded in Tonga?
- The lowest recorded value was 0.2074 in 2015.
- How does Tonga rank for income inequality: atkinson index?
- Tonga ranks 112th out of 174 countries with data for 2023.
- Is income inequality: atkinson index rising or falling in Tonga?
- Over the last ten years it is down 13.8%. The long-run trend across the full record is falling.
- Where does this Tonga data come from?
- The figures come from UNDP, Human Development Report (2025) – with minor processing by Our World in Data, published as part of Income inequality: Atkinson index. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 14 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
The Atkinson index measures inequality on a scale from 0 to 1. Higher values indicate higher inequality. Depending on the country and year, the data relates to income measured after taxes and benefits, or to consumption, per capita.