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Corruption Perceptions Index

The CPI scores and ranks countries/territories based on how corrupt a country’s public sector is perceived to be by experts and business executives. It is a composite index, a combination of 13 surveys and assessments of corruption, collected by a variety of reputable institutions. The CPI is the most widely used indicator of corruption worldwide.

Corruption around the World in 2019

View the 2019 CPI results

The methodology

  1. 1 We select the data sources
  2. 2 We standardise the data sources
  3. 3 We calculate the average
  4. 4 We report a measure of uncertainty

First launched in 1995, the Corruption Perceptions Index has been widely credited with putting this issue of corruption on the international policy agenda.

What does a number mean to you?

Each year we score countries on how corrupt their public sectors are seen to be. Our Corruption Perceptions Index sends a powerful message and governments have been forced to take notice and act.

Behind these numbers is the daily reality for people living in these countries. The index cannot capture the individual frustration of this reality, but it does capture the informed views of analysts, businesspeople and experts in countries around the world.