Exploring the Economic and Social Determinants of Income Inequality in Indonesia

Authors

  • Aminuddin Anwar Department of Economics, Universitas Islam Indonesia
  • Mustika Noor Mifrahi Department of Economics, Universitas Islam Indonesia

DOI:

https://doi.org/10.24269/ekuilibrium.v21i2.2026.pp351-368

Keywords:

Inequality, Socio-economic, Autoregressive Distributed Lag, Gini Index

Abstract

This study aims to analyze the dynamic aspects of economic and social factors that influence income inequality in Indonesia. This study applies the Autoregressive Distributed Lag (ARDL) time series model for the period 1996-2024, using the Gini Index as an indicator of inequality and including GDP per capita, literacy rate, unemployment, inflation, and population density as determinants. The result of this study show that the existence of a long rung cointegration relationship among variables as a result of Bound Cointegration Test. The short-term result indicates fluctuations of the dynamics of inequality, income, education, unemployment, inflation, and population density influence inequality in Indonesia. The Error Correction Term (ECT) is negative and statistically significant, indicating a stable adjustment from short-run disequilibrium toward long-run equilibrium. Meanwhile, long-term conditions show consistent results, but the inflation variable has no effect on inequality. The implications of this research indicate that the government needs to implement structured policies to encourage national economic growth and improve the quality of education, while simultaneously reducing unemployment and managing population density in Indonesia.

Downloads

Download data is not yet available.

References

Afandi, A., Rantung, V. P., & Marashdeh, H. (2017). Determinant of income inequality in Indonesia. Economic Journal of Emerging Markets, 9(2), 159–171. https://doi.org/10.20885/ejem.vol9.iss2.art5

Anand, S., & Segal, P. (2008). What Do We Know about Global Income Inequality? Journal of Economic Literature, 46(1), 57–94. https://doi.org/10.1257/jel.46.L57

Aswicahyono, H., Brooks, D. H., & Manning, C. (2011). Exports and Employment in Indonesia: The Decline in Labor-Intensive Manufacturing and the Rise of Services (279; ADB Economics Working Paper, Number 279).

Atkinson, A. B. (1970). On the measurement of inequality. Journal of Economic Theory, 2(3), 244–263. https://doi.org/10.1016/0022-0531(70)90039-6

Ayyash, M., Sek, S. K., & Kole, A. (2025). Income inequality dynamics in ASEAN-5: a panel data approach using CS-ARDL to examine macroeconomic factors. Discover Sustainability, 6(1). https://doi.org/10.1007/s43621-025-01068-1

Badriah, S. L., & Istiqomah, I. (2022). Does Gender Inequality Lead to Income Inequality? Evidence from Indonesia. Ekuilibrium: Jurnal Ilmiah Bidang Ilmu Ekonomi, 17(1), 1–13. https://doi.org/10.24269/ekuilibrium.v17i1.2022.pp1-13

Banerjee, A. V., & Duflo, E. (2003). Inequality and growth: What can the data Say? Journal of Economic Growth, 8(3), 267–299. https://doi.org/10.1023/A:1026205114860

Barro, R. J. (2000). Inequality and Growth in a Panel of Countries. Journal of Economic Growth, 5, 5–32. https://doi.org/https://doi.org/10.1023/A:1009850119329

Batuo, M. E., Kararach, G., & Malki, I. (2022). The dynamics of income inequality in Africa: An empirical investigation on the role of macroeconomic and institutional forces. World Development, 157. https://doi.org/10.1016/j.worlddev.2022.105939

Bou Dib, J., Alamsyah, Z., & Qaim, M. (2018). Land-use change and income inequality in rural Indonesia. Forest Policy and Economics, 94(March), 55–66. https://doi.org/10.1016/j.forpol.2018.06.010

Bourguignon, F. (2016). Inequality and Globalization: How the Rich Get Richer as the Poor Catch Up. Foreign Affairs, 95(1), 11–15. https://doi.org/http://www.jstor.org/stable/43946620

Brueckner, M., & Lederman, D. (2018). Inequality and economic growth: the role of initial income. Journal of Economic Growth, 23(3), 341–366. https://doi.org/10.1007/s10887-018-9156-4

Chancel, L., Cogneau, D., Gethin, A., Myczkowski, A., & Robilliard, A. S. (2023). Income inequality in Africa, 1990–2019: Measurement, patterns, determinants. World Development, 163. https://doi.org/10.1016/j.worlddev.2022.106162

Combes, J. L., Debrun, X., Minea, A., Sawadogo, P. N., & Vinturis, C. (2024). On the side effects of fiscal policy: Fiscal rules and income inequality. European Journal of Political Economy. https://doi.org/10.1016/j.ejpoleco.2024.102534

Faggian, A., Michelangeli, A., & Tkach, K. (2023). Income inequality in Europe: Reality, perceptions, and hopes. Research in Globalization, 6, 100118. https://doi.org/10.1016/J.RESGLO.2023.100118

Glawe, L., & Wagner, H. (2024). Inflation and inequality: new evidence from a dynamic panel threshold analysis. International Economics and Economic Policy, 21(2), 297–309. https://doi.org/10.1007/s10368-023-00580-x

Gordón, I. G., & Resosudarmo, B. P. (2019). A sectoral growth-income inequality nexus in Indonesia. Regional Science Policy and Practice, 11(1), 123–139. https://doi.org/10.1111/rsp3.12125

Hacibedel, B., Mandon, P., Muthoora, P., & Pouokam, N. (2024). Inequality, growth fluctuations, and employment. Empirical Economics, 66(2), 587–622. https://doi.org/10.1007/s00181-023-02476-w

Husain, H. (2022). The dynamics of asymmetry among fertility, income inequality and financial development in Bangladesh. World Development Sustainability, 1. https://doi.org/10.1016/j.wds.2022.100014

Islam, M. S. (2020). Human Capital and Per Capita Income Linkage in South Asia: A Heterogeneous Dynamic Panel Analysis. Journal of the Knowledge Economy, 11(4), 1614–1629. https://doi.org/10.1007/s13132-020-00637-1

Jäntti, M., & Jenkins, S. P. (2010). The impact of macroeconomic conditions on income inequality. Journal of Economic Inequality, 8(2), 221–240. https://doi.org/10.1007/s10888-009-9113-8

Jianhua, Z., Zijin, Z., & Yanxi, S. (2025). Income growth and inequality reduction through rural industrial integration: Evidence from small-scale farmers in China. Journal of Asian Economics, 100. https://doi.org/10.1016/j.asieco.2025.102009

Koudalo, Y. M. A., & Wu, J. (2022). Does financial liberalization reduce income inequality? Evidence from Africa. Emerging Markets Review, 53. https://doi.org/10.1016/j.ememar.2022.100945

Kuznets, S. (1955). Economic Growth and Income Inequality. The American Economic Review, 45(1), 1–28. https://www.jstor.org/stable/1811581

Mahadevan, R., Nugroho, A., & Amir, H. (2017). Do inward looking trade policies affect poverty and income inequality? Evidence from Indonesia’s recent wave of rising protectionism. Economic Modelling, 62(December 2016), 23–34. https://doi.org/10.1016/j.econmod.2016.12.031

Mareš, J., & Horvath, R. (2025). The multidimensionality of financial development and income inequality: A panel Bayesian model averaging approach. Economic Systems. https://doi.org/10.1016/j.ecosys.2025.101331

Marson, M., & Saccone, D. (2025). The effect of food price upsurges on income inequality: The richest win and the poorest lose. Food Policy, 131. https://doi.org/10.1016/j.foodpol.2025.102830

Md Jamil, A. R., Law, S. H., Khair-Afham, M. S., & Trinugroho, I. (2024). Financial inclusion and income inequality in developing countries: The role of aging populations. Research in International Business and Finance, 67. https://doi.org/10.1016/j.ribaf.2023.102110

Mercado, R., Park, C. Y., & Zhuang, J. (2024). Trends and drivers of income inequality in the Philippines, Thailand, and Viet Nam since the early 2000s: A decomposition analysis. Journal of Asian Economics, 94. https://doi.org/10.1016/j.asieco.2024.101775

Miller, S. M., & Teryoshin, Y. (2024). Income inequality and monetary policy regimes. Economics Letters, 243. https://doi.org/10.1016/j.econlet.2024.111890

Munir, K., & Sultan, M. (2017). Macroeconomic determinants of income inequality in India and Pakistan. Theoretical and Applied Economics, XXIV(4(613)), 109–120.

Mwakalila, E., & Muba, S. (2025). The role of financial inclusion in reducing income inequality and poverty in Africa: A macro-level analysis. Scientific African, 29. https://doi.org/10.1016/j.sciaf.2025.e02811

Nam, H.-J., Frijns, B., & Ryu, D. (2024). Trade openness and income inequality: The moderating role of institutional quality. Global Finance Journal, 100959(60), 1. https://doi.org/https://doi.org/10.1016/j.gfj.2024.100959

Nuraini, I., Fajri Ananda, C., Muljaningsih, S., & Wahyudi, S. T. (2024). Regional Macro Policies for People’s Happiness. Ekuilibrium: Jurnal Ilmiah Bidang Ilmu Ekonomi, 19(2), 172–184. https://doi.org/10.24269/ekuilibrium.v19i2.2024.pp172-184

Paweenawat, S. W., & McNown, R. (2014). The determinants of income inequality in Thailand: A synthetic cohort analysis. Journal of Asian Economics, 31–32, 10–21. https://doi.org/10.1016/j.asieco.2014.02.001

Pertiwi, A. B., Juwita, A. H., & Suryanto, S. (2021). Effects of Poverty, Income Inequality and Economic Growth to Environmental Quality Index (EQI) in 33 Province in Indonesia 2014-2019. Ekuilibrium: Jurnal Ilmiah Bidang Ilmu Ekonomi, 16(2), 154–163. https://doi.org/10.24269/ekuilibrium.v16i2.2021.pp154-163

Pesaran, M. H., Shin, Y., & Smith, R. J. (2001). Bounds testing approaches to the analysis of level relationships. Journal of Applied Econometrics, 16(3), 289–326. https://doi.org/10.1002/jae.616

Roine, J., Vlachos, J., & Waldenström, D. (2009). The long-run determinants of inequality: What can we learn from top income data? Journal of Public Economics, 93(7–8), 974–988. https://doi.org/10.1016/j.jpubeco.2009.04.003

Sen, A. K. (1997). Distinguished Guest Lecture From Income Inequality to Economic Inequality. Southern Economic Journal, 64(2), 383–401.

Sitthiyot, T., & Holasut, K. (2016). On Income Inequality and Population Size. Thammasat Review of Economic and Social Policy, 2(2). https://doi.org/https://doi.org/10.14456/tresp.2016.8

Smeeding, T. M. (2005). Public policy, economic inequality, and poverty: The United States in comparative perspective. Social Science Quarterly, 86(SPEC. ISS.), 955–983. https://doi.org/10.1111/j.0038-4941.2005.00331.x

Soto, G., Jardon, C. M., & Martinez-Cobas, X. (2024). FDI and income inequality in tax-haven countries: The relevance of tax pressure. Economic Systems, 48(1). https://doi.org/10.1016/j.ecosys.2023.101172

Stiglitz, J. E. (2015). The Origins of Inequality, and Policies to Contain It. National Tax Journal, 68(2), 425–448.

Szczepaniak, M., Geise, A., & Bariyah, N. (2022). Impact of institutional determinants on income inequalities in Indonesia during the Era Reformasi. Journal of Asian Economics, 82(July), 0–1. https://doi.org/10.1016/j.asieco.2022.101526

Tadjoeddin, M. Z. (2016). Earnings, productivity and inequality in Indonesia. Economic and Labour Relations Review, 27(2), 248–271. https://doi.org/10.1177/1035304616643452

Tadjoeddin, M. Z. (2019). Inequality and Exclusion in Indonesia. Journal of Southeast Asian Economies, 36(3), 284–303. https://doi.org/10.2307/26842377

Vadila, Y., & Resosudarmo, B. P. (2020). Tariff reform and income inequality in Indonesia. Regional Science Policy and Practice, 12(3), 455–475. https://doi.org/10.1111/rsp3.12253

Wang, J., Pei, Z. K., Wang, Y., & Qin, Z. (2024). An investigation of income inequality through autoregressive integrated moving average and regression analysis. Healthcare Analytics, 5. https://doi.org/10.1016/j.health.2023.100287

Warr, P. (2014). Agricultural liberalization, poverty and inequality: Indonesia and Thailand. Journal of Asian Economics, 35(2014), 92–106. https://doi.org/10.1016/j.asieco.2014.10.003

Zhang, Y., Hainan, L., Feng, F., & Wu, X. (2025). Digital economy, education, human capital and urban–rural income disparity. Finance Research Letters, 71. https://doi.org/10.1016/j.frl.2024.106464

Downloads

Published

2026-09-16

How to Cite

Anwar, A., & Mifrahi , M. N. (2026). Exploring the Economic and Social Determinants of Income Inequality in Indonesia. Ekuilibrium : Jurnal Ilmiah Bidang Ilmu Ekonomi, 21(2), 351–368. https://doi.org/10.24269/ekuilibrium.v21i2.2026.pp351-368

Issue

Section

Article