---
title: "Corruption Perceptions Index — List & Key Details"
description: "The Corruption Perceptions Index ranks 180 countries on perceived public-sector corruption from 0-100, based on expert and business surveys."
url: "https://modeldiplomat.com/learn/glossary/corruption-perceptions-index"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The Corruption Perceptions Index is Transparency International's annual ranking that scores 180 countries on perceived public-sector corruption using a 0-100 scale aggregated from expert and business surveys.
- Who publishes the Corruption Perceptions Index and on what scale?
- How does the CPI differ from the Global Corruption Barometer?
- What are the main criticisms of the CPI for exam purposes?
- Which Indian anti-corruption mechanisms should be cited alongside the CPI?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

The Corruption Perceptions Index is Transparency International's annual ranking that scores 180 countries on perceived public-sector corruption using a 0-100 scale aggregated from expert and business surveys.

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Transparency International's 2024 Corruption Perceptions Index, released in February 2025, scored Denmark highest while placing India in the score band near 38-40, fuelling parliamentary debate over the adequacy of anti-corruption institutions.

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