Corruption Perceptions Index 2025
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The Corruption Perceptions Index scores 182 countries and territories by their perceived levels of public sector corruption, according to experts and business people.
Publications
From research reports and policy positions to real life stories and toolkits, our publications offer insight into corruption and how to prevent and stop it.
Spotlight publications
Into the light: Benchmarking beneficial ownership transparency frameworks across MENA
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Across MENA, countries are reforming ownership transparency frameworks, but sustained progress depends on stronger implementation.
Digital disclosure of political finance in Africa, Asia and the Pacific, and Latin America and the Caribbean
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This study reviews the approaches to digital disclosure of political party and candidate finance in three regions.
How effective is whistleblower protection in the EU? Trends, gaps and emerging practices across member states
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EU whistleblower rules exist, but slow, uneven implementation leaves gaps in protection, enforcement, and support.
More publications
Annual Report 2025
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In 2025, Transparency International pursued its mission to stop corruption and promote transparency, accountability and integrity at all levels and across all sectors of society.
Breaking the Silos: A Practical Guide to Fighting Corruption with a Human Rights-Based Approach
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This guide seeks to equip human rights defenders and anti-corruption advocates with practical tools to promote accountability for corrupt acts.
Connecting the Dots: How financial intelligence units expose corrupt money flows and how they could do more
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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
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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
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Stronger collaboration between Supreme Audit Institutions and Civil Society Organisations is needed for better public financial oversight.
Accelerating Action Against Criminal and Corrupt Wealth: Recommendations for the London Illicit Finance Summit
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This paper sets out recommendations on how governments participating in the UK Illicit Finance Summit can deliver credible and ambitious outcomes.
Getting Political Finance Right: Preventing corruption with UNCAC CoSP Resolution 11/7
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Resolution 11/7 is the world’s furthest-reaching consensus yet on preventing and combating corruption enabled by money in elections and politics.
Closing the Gaps: Detecting and investigating corrupt money flows in the Middle East and North Africa
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Corruption and illicit financial flows remain serious and ongoing challenges across the Middle East and North Africa.
High Integrity Talks: How COP31 Presidency can set a new standard for climate leadership
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How COP31 Presidency can set a new standard for climate leadership
How effective is whistleblower protection in the EU? Trends, gaps and emerging practices across member states
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EU whistleblower rules exist, but slow, uneven implementation leaves gaps in protection, enforcement, and support.
Whistleblower protection in EU enlargement countries - Towards EU standards and best practice
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Whistleblower protections in EU candidate countries lag behind EU standards, with legal gaps and weak systems undermining accountability.
Enabler Accountability: Assessing Measures Taken against Professionals Implicated in Cases of Illicit Financial Flows from Africa
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How often are enablers of illicit financial flows held to account? We examine criminal and administrative action, enforcement gaps and priorities for reform.
Corruption Perceptions Index 2025
Publication •
The Corruption Perceptions Index scores 182 countries and territories by their perceived levels of public sector corruption, according to experts and business people.
Public debt confidentiality: Separating fact from fiction
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Citizens have a right to know about their country's debt because public debt is the public's debt.
Missing in action: Where is civic space in UNCAC reviews?
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With civic space being narrowed in many countries, the UNCAC implementation review process must do more to promote an enabling environment for civil society participation in…
Into the light: Benchmarking beneficial ownership transparency frameworks across MENA
Publication •
Across MENA, countries are reforming ownership transparency frameworks, but sustained progress depends on stronger implementation.
Digital disclosure of political finance in Africa, Asia and the Pacific, and Latin America and the Caribbean
Publication •
This study reviews the approaches to digital disclosure of political party and candidate finance in three regions.
Fuelling Delay: How fossil fuel interests shape global climate negotiations
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Fuelling Delay draws on 39 interviews with climate negotiators, UNFCCC observers, and researchers, complemented by field observations from COP29 in Baku and the 2025 Bonn mid-year…
The role of business in fighting impunity and corruption to protect environmental defenders
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The paper offers a roadmap for action, urging businesses, policymakers, and investors to embed integrity beyond compliance and strengthen protections for defenders and…
Chasing Grand Corruption: Hurdles to detection, investigation and prosecution of complex cases across the EU
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Law enforcement authorities across the EU face persistent legal, technical and coordination challenges that hinder effective cross-border corruption investigations.
Regulating Legitimate Interest Access: Measures to ensure meaningful access to beneficial ownership registers for public-interest stakeholders
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Anonymous companies and trusts continue to be vehicles of choice for those seeking to hide and move illicit money.
Public Loans, Private Gains: Addressing corruption across the debt cycle
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This working paper explores how corruption risks permeate every stage of the sovereign debt cycle – from contracting and management to restructuring.
Clean contracting for sustainable development
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Corruption in public procurement harms services and slows progress. This paper calls for clean contracting to boost integrity and effective spending.
Addressing corrupt uses of artificial intelligence
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This working paper covers the corrupt use of AI in the public sector, proposing a definition, manifestations of corrupt use of AI, and a suite of recommendations.
Behind the badge: Understanding the roles, reach, and risks of fossil fuel industry participation in UN climate talks
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This analysis explores how fossil fuel interests access and influence UN climate talks, and highlights the risks this poses to transparency and integrity.
Monitoring Internal Whistleblowing Systems
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A framework for collecting whistleblowing data and reporting on performance and impact.
Annual Report 2024
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In 2024, Transparency International led the fight against corruption around the world.
Barriers to Basics: Corruption and discrimination in education and health services
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This report explores how corruption and discrimination limit access to education and healthcare services.
Opacity in Real Estate Ownership Index: Assessing data transparency and anti-money laundering rules in global markets
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The Opacity in Real Estate Ownership (OREO) Index reveals gaps that make global property markets vulnerable to corrupt money flows.
Corruption Perceptions Index 2024
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The Corruption Perceptions Index scores 180 countries and territories by their perceived levels of public sector corruption, according to experts and business people.
