Control of Corruption

Extent to which public power is exercised for private gain, including petty and grand corruption, as well as "capture" of the state by elites and private interests.

Quick Reference

Unit

Score (-2.5 to +2.5)

How It's Calculated

Composite indicator from 35+ sources measuring: (1) frequency of petty corruption (bribes for licenses, permits, public services), (2) grand corruption (embezzlement of public funds, kickbacks on contracts), (3) state capture (elites manipulating laws for private gain), (4) anti-corruption enforcement effectiveness. Aggregated using Unobserved Components Model. Standardized to -2.5 (rampant corruption) to +2.5 (highly controlled). Also on 0-100 scale.

Why It Matters

Corruption diverts public resources from essential services (healthcare, education, infrastructure) to private pockets, undermines trust in government, and distorts economic decisions. It acts as a regressive tax - the poor pay bribes for basic services while the rich buy influence. High corruption deters foreign investment, enables organized crime, and perpetuates inequality. Corruption costs the global economy an estimated $2.6 trillion annually (5% of global GDP). Strong control of corruption is essential for sustainable development, efficient public spending, and social trust.

Understanding the Values

Very Weak: < -1.5 (endemic corruption at all levels - Somalia, Venezuela, South Sudan, Yemen) Weak: -1.5 to -0.5 (widespread corruption, weak enforcement - Russia, Nigeria, Bangladesh) Moderate: -0.5 to +0.5 (corruption exists, inconsistent enforcement - Brazil, India, China, Greece) Strong: +0.5 to +1.5 (low corruption, effective enforcement - most OECD countries) Very Strong: > +1.5 (minimal corruption, strong accountability - Denmark, New Zealand, Finland, Singapore) Global mean: ~0 by design OECD average: +1.2 Top performers: Denmark (+2.3), New Zealand (+2.2), Finland (+2.2), Singapore (+2.2) Bottom 10%: Failed states, authoritarian regimes with kleptocratic elites Note: No country scores +2.5 - even best performers face some corruption. Transparency International Corruption Perceptions Index uses similar methodology.

Related Metrics

Government Effectiveness

Quality of public services, civil service competence, policy formulation and implementation, and credibility of government commitment to policies.

Regulatory Quality

Government ability to formulate and implement sound policies and regulations that permit and promote private sector development.

Rule of Law

Extent to which agents have confidence in and abide by rules of society, including quality of contract enforcement, property rights, police, and courts, as well as likelihood of crime and violence.

Data Quality & Coverage

Coverage: 200+ countries/territories Update frequency: Annual (1-2 year lag) Source: World Bank WGI Limitations: Perception-based, not direct corruption measurements (hard to quantify hidden activity). Business executives and experts may have biases. High-profile scandals can temporarily lower scores even if systemic corruption unchanged. Does not distinguish between "grease payments" (petty bribes) and state capture (grand corruption). Legal corruption (lobbying, revolving door) in democracies not always captured. Political systems differ - what's corruption in one culture may be accepted practice in another.