Corruption Perceptions Index

The Corruption Perceptions Index is an annual composite indicator published by Transparency International that ranks countries based on perceived levels of public sector corruption.

• It acts as an international reference point for assessing state integrity, directly influencing global investor confidence and credit ratings.
• It provides a comparative framework to evaluate the efficacy of domestic anti-corruption legislation, institutional watchdogs, and administrative transparency measures.
• It highlights structural vulnerabilities in public procurement, discretionary governance, and service delivery systems.

UPSC frames questions on this index to test a candidate's understanding of governance, civil service ethics, and administrative reforms under GS Paper II and GS Paper IV. Questions often require candidates to critically evaluate the limitations of perception-based global metrics while suggesting concrete legal, technological, and institutional measures to improve public sector integrity.

• Governance GS2
• Probity in Governance GS4

• Ease of Doing Business Index
• Economic Survey
• Environmental Performance Index
• Global Competitiveness Report
• Global Gender Gap Report
• Global Hunger Index
• Global Innovation Index
• Human Development Report
• SDG India Index
• World Happiness Report