A blueprint for a coordinated minimum effective taxation standard for ultra-high-net-worth individuals
Contemporary tax systems fail to tax ultra-high-net-worth individuals effectively. This report presents a proposal to address this issue through international cooperation.
Our purpose
Our purpose
The EU Tax Observatory conducts innovative research on taxation, contributes to a democratic and inclusive debate on the future of taxation, and fosters a dialogue between the scientific community, civil society, and policymakers in the European Union and worldwide.
Average statutory corporate
income tax rate in the European Union
The average corporate income tax rate in the European Union has been more than halved since 1980, according to statistics compiled by the OECD and the European Commission
Recent publications
29.08.2025
Tax Progressivity and Inequality in Brazil: Evidence from Integrated Administrative Data
The paper uses population-wide administrative micro-data to provide new estimates of income inequality and effective tax rates by income groups in Brazil, capturing all income and all tax payments.
06.05.2025
The New Face of Corporate Tax Competition
The effective tax rate of multinational companies declined by 2.7 percentage points in the European Union between 2014 and 2022, shows a new EU Tax Observatory analysis of a decade of corporate tax reforms. The decline was exacerbated by tax competition between Member States.
16.09.2025
Who Owns Offshore Real Estate? Evidence from Dubai
The paper uses novel leaked microdata to study offshore real estate in Dubai, a fast-growing tax haven.
Our news
29.08.2025
Press Release: Unprecedented Study Provides New Picture of Inequality and Taxes Paid in Brazil
28 August 2025 - A groundbreaking study led by a group of Brazilian and international economists reveals unprecedented findings reshaping our understanding of Brazil’s inequality and tax system.
16.05.2025
Press Release: EU Tax Observatory Brought Together Leading Policymakers and Experts to Discuss the Future of EU Tax Policies
Paris, 16 May — Earlier this week, the EU Tax Observatory hosted its annual flagship event in Brussels. The event brought together leading voices in European taxation to explore the future of corporate transparency, global tax fairness, and the role of enforcement in a fast-changing world.
10.04.2025
Joint Press Release: Conclusion of the International Conference on Taxing Billionaires
The two-day International Conference on Taxing Billionaires, held in Paris, concluded yesterday. The event attracted over 200 participants, including academics, legal experts, policymakers, and representatives from international organizations. The conference focused on the effective taxation of...
EUTO in the media
04.09.2025
CNN Brasil
Haddad: Brazil cannot be among the largest economies and be so unequal
The work, although using data from 2019, confirms that, in Brazil, the richest 1% concentrate 27.4% of total income, and dollar millionaires in Brazil (that is, those who receive more than approximately R$5.5 million in annual income) have much lower effective tax rates than the rest of the...
04.09.2025
Folha de S.Paulo
Haddad presents study on tax inequality before Congress votes on income tax changes
“This makes Brazil one of the most unequal countries in the world,” says French economist Gabriel Zucman, who led the study.
21.07.2025
World Finance
The great offshore tax exodus
Further supporting this concern, research from the EU Tax Observatory showed that jurisdictions with high-risk CBI programmes, such as Dominica, St. Lucia, Cyprus, Grenada, Malta and Vanautu, saw bank deposits in tax havens increase up to 55 percent after their CBI schemes were launched or expanded.
Our Tools
To widen access to knowledge, the EU Tax Observatory provides interactive tools, including a simulator of the tax deficit of multinational companies, and an explorer of country-by-country data on the activities of multinationals firms.
Our events
Hybride 01.09.2025
2025-26 Lunch Seminar
Twice a month, the EU tax holds a seminar to discuss the challenges posed to national tax systems by the increased global mobility of capital and labour.
Room 2-21, Paris School of Economics 01.09.2024
The Offshore Talks
Join us for an engaging lecture series featuring a dynamic lineup of distinguished speakers who will uncover the hidden forces driving global inequality.
Hybrid 20.09.2024
2024-25 Lunch Seminar
Twice a month, the EU tax holds a seminar to discuss the challenges posed to national tax systems by the increased global mobility of capital and labour.
Join Us
Please contact us for further information.
Newsletter
Subscribe