The index, which ranks 180 countries and territories by their perceived levels of public sector corruption according to experts and businesspeople, uses a scale of 0 to 100, where 0 is highly corrupt and 100 is very clean. More than two-thirds of countries score below 50 on this year’s CPI, with an average score of just 43.  

It reveals that the continued failure of most countries to significantly control corruption is contributing to a crisis in democracy around the world. While there are exceptions, the data shows that despite some progress, most countries are failing to make serious inroads against corruption. 

See previous CPI results.

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Index 2018

CPI Scale from Highly Corrupt to Very Clean

Highlights

Improvers

  • Estonia
  • Côte D’Ivoire
  • Senegal
  • Guyana

Decliners

  • Australia
  • Chile
  • Malta
  • Turkey
  • Mexico

Countries to watch

  • United States of America
  • Czech Republic
  • Brazil

Corruption is much more likely to flourish where democratic foundations are weak and, as we have seen in many countries, where undemocratic and populist politicians can use it to their advantage.

Delia Ferreira Rubio
Chair
Transparency International

The CPI in Detail

The full data set

Since its inception in 1995, the Corruption Perceptions Index, Transparency International’s flagship research product, has become the leading global indicator of public sector corruption. The index offers an annual snapshot of the relative degree of corruption by ranking countries and territories from all over the globe. In 2012, Transparency International revised the methodology used to construct the index to allow for comparison of scores from one year to the next. The 2018 CPI draws on 13 surveys and expert assessments to measure public sector corruption in 180 countries and territories, giving each a score from zero (highly corrupt) to 100 (very clean). 

# Country Region 2018 2017 2016 2015

Methodology

The methodology follows four basic steps: selection of source data, rescaling source data, aggregating the rescaled data and then reporting a measure for uncertainty. 

Relevant Topics

Press Release

The 2018 Corruption Perceptions Index (CPI) reveals that the continued failure of most countries to significantly control corruption is contributing to a crisis of democracy around the world.

Full Press Release: Englishعربي | Español | Français | Русский 

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CPI 2019: Global Highlights

CPI 2019 reveals that a majority of countries are showing little to no improvement in tackling corruption. More than two-thirds of countries score below 50, with an average score of just 43.

Индекс восприятия коррупции 2019: Восточная Европа и Центральная Азия

Регион имеет сложности с ограниченным разделением властей, злоупотреблением государственными ресурсами в избирательных целях, непрозрачным финансированием политических партий и конфликтами интересов.

Corruption Perceptions Index 2019

The Corruption Perceptions Index ranks 180 countries and territories by their perceived levels of public sector corruption, according to experts and business people.

الشرق الأوسط وشمال إفريقيا

وبنفس معدل الدرجات البالغ ً 39خلال العام الماضي، كان هناك تقدما ً ضئيلا في تحسين السيطرة على الفساد في منطقة الشرق الأوسط وشمال إفريقيا

IPC 2019: Afrique Subsaharienne

Tandis que les Seychelles sont aux prises avec des affaires de blanchiment d’argent, dimension qui n’est pas pris en compte dans le calcul de l’IPC , plusieurs lois anti-corruption, notamment une loi récente sur l’accès à l’information et une commission anti-corruption créée il y a peu, ont contribué à renforcer le cadre de la lutte contre la corruption dans le pays.

CPI 2019: Middle East and North Africa

With the same average score of 39 as last year, there is little progress in improving control of corruption in the Middle East and North Africa region.

IPC 2019: Américas

Por cuatro año consecutivo, con una puntación media de 43 puntos, la región de las Américas no logra progresar significativamente en la lucha contra la corrupción.

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