# Corruption Perceptions Index 2015 URL: https://www.transparency.org/en/publications/cpi-2015 Type: Publication or report Published: 2016-01-27 Updated: 2019-11-22 --- 27 January 2016 Based on expert opinion from around the world, the Corruption Perceptions Index measures the perceived levels of public sector corruption worldwide. Not one of the 168 countries assessed in the 2015 index gets a perfect score and two-thirds score below 50, on a scale from 0 (highly corrupt) to 100 (very clean). More than 6 billion people live in a country with a serious corruption problem. View the related feature at [www.transparency.org/cpi2015](http://www.transparency.org/cpi2015). ### Related publications ## [Regional Assessment of Integrity in Political Finance in South Asia, Southeast Asia and East Asia](https://www.transparency.org/en/publications/integrity-political-finance-asia) Publication • 03 September 2026 This report reviews systems across 17 countries to identify the areas of political finance most in need of reform. ## [Connecting the Dots: How financial intelligence units expose corrupt money flows and how they could do more](https://www.transparency.org/en/publications/connecting-the-dots) Publication • 24 June 2026 Financial intelligence units can play a key role in uncovering corruption, but only if they have the powers, resources and access to information they need. ## [Whistleblowing Authorities in Europe: Roles, challenges and lessons learned](https://www.transparency.org/en/publications/whistleblowing-authorities-in-europe-roles-challenges-and-lessons-learned) Publication • 19 June 2026 This report examines the institutional design, mandates and functioning of national whistleblowing authorities across Europe. ## [Strengthening Public Oversight: Good practices for partnerships between civil society and supreme audit institutions](https://www.transparency.org/en/publications/strengthening-public-oversight-good-practices-for-partnerships-between-civil-society-and-supreme-audit-institutions) Publication • 29 May 2026 Stronger collaboration between Supreme Audit Institutions and Civil Society Organisations is needed for better public financial oversight. ![](https://images.transparencycdn.org/images/2015_CPI_Report_EN.jpg?auto=compress&fit=crop&fm=webp&w=1200) [Download](https://images.transparencycdn.org/images/2015_CorruptionPerceptionsIndex_Report_EN.pdf)