Understanding World Bank's income classification system for countries based on GNI per capita
The World Bank classifies countries into four income groups—low, lower-middle, upper-middle, and high-income—based on their Gross National Income (GNI) per capita, converted to U.S. dollars. These absolute income thresholds are updated annually for inflation and serve as a standard for international comparison. While initially tied to the Bank's lending policies, they now primarily categorize countries by economic development. Globally, there's a trend of countries moving up the income ladder, with the population in low-income countries significantly decreasing from 37% in 2004 to less than 10% in 2024, reflecting overall economic growth.
Key Points
- The World Bank classifies countries into four income groups: low, lower-middle, upper-middle, and high-income.
- Classification is determined by Gross National Income (GNI) per capita, converted to U.S. dollars.
- Income thresholds are absolute, not relative, and are adjusted annually for global inflation.
- Most countries have moved up the income ladder over time, indicating economic growth.
- The share of the global population living in low-income countries has significantly decreased over the past two decades.
Exam Facts
- World Bank income groups are low, lower-middle, upper-middle, and high-income.
- Classification is based on GNI per capita.
- Latest thresholds (in U.S. dollars): low income: $1,135 or less; lower-middle: $1,136 to $4,495; upper-middle: $4,496 to $13,935; high income: More than $13,935.
- Population in low-income countries decreased from 37.4% in 2004 to 7.6% in 2024.
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