Research Abstract: 

National productivity statistics — GDP per worker, total factor productivity, aggregate growth rates — mask enormous variation within large developing economies. In India, per capita income in the richest major state (Goa) is approximately eight times that of the poorest (Bihar). In Indonesia, per capita output in Jakarta is approximately five times the national average and more than ten times that of the poorest provinces in Eastern Indonesia. In the Philippines, the National Capital Region (Metro Manila) produces approximately 36% of national GDP with less than 14% of the population, while several regions in the Visayas and Mindanao have per capita output below one-fifth of the Manila level.

These subnational productivity disparities are not merely statistical curiosities — they are among the most consequential structural features of large developing economies. They drive internal migration, shape political economy, determine the geographic distribution of poverty and opportunity, and constrain aggregate national productivity by trapping large populations in low-productivity regions where institutional, infrastructural, and human capital conditions prevent convergence toward the national frontier.

This report examines subnational productivity divergence across India, Indonesia, and the Philippines — three of developing Asia’s largest economies, each characterized by extreme internal variation in economic performance. The comparative analysis reveals that subnational divergence is driven by a common set of determinants — infrastructure connectivity, human capital accumulation, institutional quality, structural composition of economic activity, and access to markets — but that the specific mechanisms and magnitudes differ significantly across countries, reflecting differences in geography, governance structure, and development strategy.

Table of Contents:
Subnational Productivity Divergence in Large Developing Economies: Comparative Evidence from India, Indonesia, and the Philippines
Executive Summary
Chapter 1: Introduction — Why Subnational Divergence Matters for Productivity
Chapter 2: The Scale of Subnational Productivity Divergence
2.1 Cross-Country Comparison
2.2 The Convergence Question
Chapter 3: India — States That Turned Around and States That Didn’t
3.1 The Divergence Story
3.2 The Turnaround Cases
3.3 States That Have Not Turned Around
Chapter 4: Indonesia — Java vs. the Outer Islands
4.1 The Geographic Concentration Problem
4.2 Decentralization: Promise and Reality
Chapter 5: Philippines — Metro Manila and the Rest
5.1 The Manila Dominance
5.2 Why Manila Dominance Persists
Chapter 6: Cross-Country Determinants of Subnational Divergence
6.1 Infrastructure Connectivity
6.2 Human Capital
6.3 Institutional Quality and Governance
6.4 Economic Structure and Market Access
Chapter 7: Policy Responses — What Has Worked?
7.1 India: The Turnaround Ingredients
7.2 Indonesia: Decentralization Successes and Failures
7.3 Philippines: The Centralization Trap
Chapter 8: Conclusions and Recommendations
References