What is the middle-income trap in simple terms?

It is when a country that grew fast on cheap labor and imitation gets stuck at middle income because wages rise before it builds its own capacity to innovate.

Has any country escaped the middle-income trap?

South Korea, Taiwan and Singapore are the most commonly cited examples; researchers point to the combination of expanded education, technological upgrading and a shift in export structure.

Middle-Income Trap

📈 Economics By CampusDown Wiki Editorial Team Last updated October 26, 2026

The middle-income trap describes economies that grow quickly to middle income on cheap labor and imported technology, then stagnate for long periods because rising wages erode cost competitiveness before they develop the innovation capacity of advanced economies. World Bank economists Indermit Gill and Homi Kharas coined the term in 2007.

Contents

1. Origin of the concept
2. Why growth slows
3. Debate and recent work
4. FAQ
5. References

Origin of the concept

In An East Asian Renaissance (2007), World Bank economists Indermit Gill and Homi Kharas observed that many countries reaching middle income failed to sustain their earlier rapid growth and coined the term middle-income trap. A widely cited statistic holds that of roughly 100 middle-income economies in 1960, only about a dozen, including South Korea, Taiwan and Singapore, had become high income by 2008, while many Latin American and Middle Eastern economies remained at middle income for decades. The concept quickly spread through policy discussion of the long-run prospects of emerging economies such as China, Malaysia and Thailand.

Why growth slows

Early rapid growth is typically explained by the shift of surplus rural labor into higher-productivity manufacturing described by W. Arthur Lewis (1954), and by catch-up through importing and imitating frontier technology. Once surplus labor is exhausted at the Lewis turning point, wages rise and the gap with imitable technology narrows, making the same model of growth harder to sustain. Acemoglu, Aghion and Zilibotti (2006) modeled how economies nearing the technology frontier must shift from investment-based to innovation-based strategies, stagnating if they fail to switch. Eichengreen, Park and Shin (2012, 2014) found that slowdowns cluster around per capita incomes of about $10,000–11,000 and $15,000–16,000 (2005 PPP), and that countries with more secondary and tertiary education and higher-tech exports are less prone to them. Hausmann, Hwang and Rodrik (2007) showed that what a country exports affects its later growth.

Debate and recent work

Whether the trap really exists is contested. Pritchett and Summers (2014) argued that rapid growth generally regresses to the mean regardless of income level, and Im and Rosenblatt (2015) concluded that evidence that middle-income countries stagnate more than other groups is weak. Aiyar et al. (2018), by contrast, found a higher probability of slowdowns at middle income. Doner and Schneider (2016) stressed political economy: the reforms needed to upgrade skills and research capacity are often blocked by entrenched interests. The World Bank's World Development Report 2024 discussed a sequenced "3i" approach combining investment, infusion of foreign technology and innovation. The topic sits alongside human capital and endogenous growth theory as a core question in development economics.

FAQ

What is the middle-income trap in simple terms?: It is when a country that grew fast on cheap labor and imitation gets stuck at middle income because wages rise before it builds its own capacity to innovate.
Has any country escaped the middle-income trap?: South Korea, Taiwan and Singapore are the most commonly cited examples; researchers point to the combination of expanded education, technological upgrading and a shift in export structure.

Sources reviewed: 2026-10-26

References

Gill, I. S., & Kharas, H. (2007). An East Asian Renaissance: Ideas for Economic Growth. Washington, DC: World Bank.
Eichengreen, B., Park, D., & Shin, K. (2012). When fast-growing economies slow down: International evidence and implications for China. Asian Economic Papers, 11(1), 42–87.
Eichengreen, B., Park, D., & Shin, K. (2014). Growth slowdowns redux. Japan and the World Economy, 32, 65–84.
Lewis, W. A. (1954). Economic development with unlimited supplies of labour. Manchester School, 22(2), 139–191.
Felipe, J., Abdon, A., & Kumar, U. (2012). Tracking the middle-income trap: What is it, who is in it, and why? Levy Economics Institute Working Paper No. 715.
Aiyar, S., Duval, R., Puy, D., Wu, Y., & Zhang, L. (2018). Growth slowdowns and the middle-income trap. Japan and the World Economy, 48, 22–37.
Im, F. G., & Rosenblatt, D. (2015). Middle-income traps: A conceptual and empirical survey. Journal of International Commerce, Economics and Policy, 6(3), 1550013.
Pritchett, L., & Summers, L. H. (2014). Asiaphoria meets regression to the mean. NBER Working Paper No. 20573.
Acemoglu, D., Aghion, P., & Zilibotti, F. (2006). Distance to frontier, selection, and economic growth. Journal of the European Economic Association, 4(1), 37–74.
Doner, R. F., & Schneider, B. R. (2016). The middle-income trap: More politics than economics. World Politics, 68(4), 608–644.
Hausmann, R., Hwang, J., & Rodrik, D. (2007). What you export matters. Journal of Economic Growth, 12(1), 1–25.
Gill, I. S., & Kharas, H. (2015). The middle-income trap turns ten. World Bank Policy Research Working Paper No. 7403.
World Bank. (2024). World Development Report 2024: The Middle-Income Trap. Washington, DC: World Bank.

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This article was last updated on October 26, 2026. It is based on widely recognized original works and textbooks; when citing it in a paper, please check the original sources listed in the references.