Inspectors at the Dutch Tax and Customs Administration can require people to provide more information relating to their tax returns. Esther Huiskers-Stoop from the Tax Law department investigated the rules in place to protect us when we are required to provide information to the tax authorities.

The FOI project has a number of topics it aims to investigate. These are: State, Economy, Culture and Papyri. You will find links to bibliographies on this page.

Multinationals use loopholes in the tax treaties between different states. A possible solution would be to eliminate all these loopholes in one go by creating a central global treaty. Leiden researchers are investigating whether this kind of mega-treaty is feasible.

Samir Negash, PhD candidate at Leiden University and Olaf van Vliet, Professor by special appointment Comparative Welfare State Analysis at Leiden University wrote a paper regarding the topic of immigration and the conditionality of unemployment benefits in OECD countries.

The Summer School ‘The European Union, the United Nations and Global Governance’ will focus on a range of topics relevant to interactions between the European Union (EU) and the United Nations (UN) and the EU’s role within current patterns of global governance.

On Monday 20 November, a combined ILS/LRL (Leiden Research Lunch) took place.

Hoogleraar Internationaal Belastingrecht Tanja Bender heeft een vermelding gekregen in het boek Recognising 100 Years of Women in Tax.

In the last week of January, Prof. Rex Arendsen and PhD candidate Maarten Manse of the Department of Tax Law at Leiden Law School, taught an ‘Intensive Course on Tax Law' at the Gadjah Mada University (UGM) in Yogyakarta. This week of lectures illustrates the fruitful cooperation between both univer…

What can we learn from how maritime conflicts were managed in the past? What significance did Maritime Conflict Management have in shaping the standards of diplomacy and international law in pre-modern Atlantic Europe (1200-1600)?

Proud. We did it. All the Ginis. Open Access. Income inequality and Fiscal Redistribution in 47 countries 1967-2014.

This year’s EUSA biannual research conference, which took place in Miami in May 2017, saw a large delegation of the Europa Institute Leiden leaving its mark. In several panels, Prof. Luuk van Middelaar, Dr. Moritz Jesse (Associate Professor at the Europa Institute), Dr. Armin Cuyvers (Assistant Professor…

Many academics involved in the area of tax law are also employed by a commercial tax advisory firm. In his inaugural lecture of 30 October 2020, Prof. dr. Jan Vleggeert argued that this combination of 'hats' can undermine the independence of fiscal research and can result in the erosion of the Dutch…

With Brexit looming, stronger economic governance of the European Union is more essential than ever. It’s high time for action, says Amy Verdun, Professor of European Politics and Political Economy. Inaugural speech on 27 September.

Loopholes in international tax legislation contribute to the misuse of tax rules by multinationals. Leiden University legal experts investigate how the complex national and international tax rules can be made more consistent in order to create a better tax system.

In this project the already developed parcel based historical GIS (HISGIS) for the Dutch province of Friesland (Frisia) will be extended with a series of crucial datasets and map layers.

Below you will find a collection of books, other than those in the BLRN book series, to which members of BLRN have contributed.

(1) What are the institutional factors that influence AI adoption and implementation? and (2) How does AI reshape the exercise of administrative discretion within public organisations, and how do adoption and implementation choices moderate these effects?

The Leiden Political Economy Group (L-PEG) is a multi-disciplinary network of scholars with a research interest in (comparative / global) political economy based at Leiden University. Our members belong to various institutes and faculties across Leiden University, and from other universities across…

The majority of professors of tax law in the Netherlands have links to accounting and law firms, writes Dutch newspaper De Volkskrant.

The research group Organizational & Entrepreneurial Behavior investigates the behavior of individuals and groups who start, work in, or lead organizations, in order to inform organizational practice. By focusing on the behavior of (groups of) employees, entrepreneurs and leaders, the main levels of…

On 8 September the students of the European Law Master gathered in the Lorentzzaal for the festive opening of their programme.

As of 1 January 2018 Irma Mosquera will be appointed as Associate Professor at the Institute of Tax Law and Economics of Leiden University.

Migrants are far less of a burden on the budget of European countries than is often thought. This is the conclusion of research by economists from Leiden University.

Migrants are far less of a burden on the budget of European countries than is often thought. This is the conclusion of research by economists from Leiden University.

On 3 February 2021, Prof. Matthias Haentjens spoke at the second conference on bank resolution, jointly organised by the European Banking Institute (EBI) and the Single Resolution Board (SRB).

This conference explored the various ways in which anthropologists at the Leiden Institute of Cultural Anthropology and Development Sociology engage with global vulnerabilities and social resilience through their ethnographic research and representation. All staff and students were invited to participate…

The Europa Instituut is honoured to announce that two Leiden alumni received awards for their master theses at the annual meeting of the Netherlands Association for European Law (NVER) in Utrecht.

Mees Vergouwen heeft op 28 oktober de Mitchell B. Carroll prijs van de International Fiscal Association (IFA) ontvangen. De fiscalist won de prijs met zijn proefschrift over ‘botsende belastingregels’.

PhD defence

Issues such as climate change, the depletion of natural resources or social inequality are too complex to be addressed from a single scientific discipline or by a single country. Leiden University has the expertise to bring the resolution of these enormous problems a small step closer.

In 2023, many of our students and staff won great prizes and secured important research grants.

How much mortgage interest can I claim back according to law? Or maintenance payments, how much do the tax authorities let me deduct? Many citizens struggle with questions about the application of tax legislation. Roberto van den Heuvel investigated in what way tax legislation should provide clarity…

On Thursday 10 January a number of prizes were presented to researchers and students.

On Thursday 8 December at 15.00 hrs, Fred van Haasteren will defend his doctoral thesis ‘Fatsoenlijke flexibiliteit – De invloed van ILO-conventie 181 en de regelgeving omtrent uitzendarbeid’ (Decent flexibility - The influence of ILO Convention 181 and legislation on temporary agency work) at the…

The Dutch Tax Authorities leaked information about an international tax audit to Uber. In addition, they ‘obstructed and delayed’ an investigation by other EU Member States, says the International Consortium of Investigative Journalists (ICIJ) based on internal documents from the tech company.

The Summer School ‘The European Union, the United Nations and Global Governance’ is open to Master-level and PhD students. It is supported by the European Union’s Jean Monnet program.

On Friday 3rd February 2017 Leiden University hosted a PhD colloquium in conjunction with the University of Liverpool and the University of Oslo, on the topic of ‘Law and Politics in the European Union’. As part of the Interaction between Legal Systems 2.0 project, the colloquium presentations focused…

On Friday, June 12th, the Europa Institute held its annual PhD Day.

At the end of June 2021, The Dutch Ministry of Finance made a policy document public that dates back to 2016. In it, civil servants acknowledge that the Netherlands risked providing unauthorized State aid to American multinationals by allowing them to use a controversial, but favourable, fiscal construction:…

On the occasion of Euroscience Open Forum 2022, Professor Attiya Waris (Director of Research and Enterprise and Professor of Fiscal Law and Policy in Eastern Africa, University of Nairobi, Kenya), Professor Irma Mosquera Valderrama (Professor of Global Tax Governance, Lead Researcher GLOBTAXGOV ERC…

Each week, Dutch radio programme BNR Lobbypanel discusses a topic at the intersection of politics and entrepreneurship. From 2020 Arco Timmermans, Professor by special appointment Public Affairs, will participate each month in the BNR Lobbypanel discussions. This week Timmermans joined the discussion…

In Dutch the public arena, there’s talk of curbing labour migration. Which options do the Dutch have? Olaf van Vliet, Professor of Economics at Leiden University, discusses this issue in Dutch daily newspaper NRC.

The Summer School will take place from 14-25 June 2021 and welcomes Master-level and PhD-level students who are interested in learning more about the interactions between the EU and the UN and the EU’s role within current patterns in global governance.

Since September 2014 Susana Munch Miranda works as a postdoctoral researcher within Cátia Antunes ERC project 'Fighting Monopolies, Defying Empires 1500-1750'.

Students awarded the highest scores to Leiden University and the Radboud University Nijmegen. These are the findings of an annual survey by Elsevier into the best study programmes in the Netherlands. Elsevier Magazine has a weekly readership of half a million, making it one of the most iinfluential…

When Professor of Tax Law Jan Vleggeert delivered his inaugural lecture in Leiden University’s Academy Building on 30 October 2020, only 30 people were allowed to attend due to coronavirus measures. On 10 June 2022, Vleggeert was therefore given the opportunity to deliver a lecture to a much larger…

On Thursday 7 and Friday 8 December 2017, Leiden University’s Hazelhoff Center for Financial Law and the European University Institute in Florence jointly organized a PhD workshop in Leiden.

The monthly ILS Lunch seminars bring together colleagues and students from Leiden Law School, providing an informal setting to hear what researchers from other research programs and institutes are working on. On Thursday 17 October 2019, a new edition of the ILS Lunch Seminars takes place. This month,…

Applications are now open for the Summer School ‘The European Union, the United Nations and Global Governance’ (12 - 23 June 2023) for Master-level and PhD students. The activity is supported by the European Union’s Jean Monnet programme (Erasmus+).