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The ABCs of the CPI: How the Corruption Perceptions Index is calculated

We answer all your questions about the Corruption Perceptions Index

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We have one vision, a world free of corruption

Our global movement works in over 100 countries to end the injustice of corruption by promoting transparency, accountability and integrity

What is corruption?

We define corruption as the abuse of entrusted power for private gain.


To end corruption we must first understand it. That’s why we look at what causes corruption and what works against it.


To end corruption, we advocate for power to be held accountable. Everywhere.

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What we have done so far

People helped to report corruption worldwide through our Advocacy and Legal Advice Centres (ALACs).
Countries signed the United Nations Convention Against Corruption that we helped establish.
Companies worldwide committed to stop corruption as a result of our corporate sustainability initiative.
World leaders listened to our call and included corruption in Sustainable Development Goal 16.