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The implications of no-deal Brexit: is the EU prepared?

Hearing on Brexit in the EU Committee of Bundestag on 14 January 2019, exploring the possible consequences of a no-deal Brexit for the EU and assessin

Publishing date
14 January 2019

This note, written at the request of the Bundestag EU committee, explores the possible consequences of a no-deal Brexit for the EU and assesses preparations on the EU side. It also provides guidance on optimal strategy for the EU assuming different choices taken by the UK.

Overall, a no-deal Brexit would be disruptive in the short-term.

  • There would be immediate very significant administrative and logistic challenges in trade. Preparations to reduce those disruptions are underway but unlikely to be sufficient. But while MFN tariffs will affect some sectors strongly, the macroeconomic effect on the German economy may not be huge.
  •  If the UK was not honouring its financial commitments to the EU, around €16.5bn would be missing for the remainder of the multi-annual financial framework. The gap could be filled thanks to a higher “own resources” ceiling. The overall missing “Brexit bill” is estimated at around €45-50bn.
  • Not honouring financial commitments would be considered by the EU as akin to default and would likely lead to an uncooperative no-deal Brexit. It would be more disruptive than a cooperative no-deal Brexit, in which the EU and the UK cooperate on a number of pressing emergency files.
  • The Commission has issued a number of draft regulations to mitigate the effects of no-deal Brexit, including on issues such as aviation and visa. I review them and judge them to be comprehensive. Nevertheless, they cannot undo the effects of a no-deal Brexit, which will be highly disruptive in some sectors.

The effects of a no-deal Brexit in the medium to long term are difficult to assess as one needs to assume a benchmark. A no-deal Brexit would deteriorate long-term political relations, which will render new trade arrangement and other cooperation in the future less likely.

A specific concern is the situation in Ireland, which is also the most contentious part of the Brexit negotiation. If the EU wants to protect the integrity of its single market, a no-deal Brexit will mean the imposition of customs border controls on the island. The EC draft legislation aims preserving elements of the peace process but a border could lead to renewed violence.

The overall strategic direction I would advise the EU to take is to increase the cost of no-deal Brexit to UK as much as possible (respecting ethical limits), while at the same time showing more flexibility on the political declaration and possibly the withdrawal deal itself.

About the authors

  • Guntram B. Wolff

    Guntram Wolff is a Senior fellow at Bruegel. He is also a Professor of Public Policy and Economics at the Willy Brandt School of Public Policy. From 2022-2024, he was the Director and CEO of the German Council on Foreign Relations (DGAP) and from 2013-22 the director of Bruegel. Over his career, he has contributed to research on European political economy, climate policy, geoeconomics, macroeconomics and foreign affairs. His work was published in academic journals such as Nature, Science, Research Policy, Energy Policy, Climate Policy, Journal of European Public Policy, Journal of Banking and Finance. His co-authored book “The macroeconomics of decarbonization” is published in Cambridge University Press.

    An experienced public adviser, he has been testifying twice a year since 2013 to the informal European finance ministers’ and central bank governors’ ECOFIN Council meeting on a large variety of topics. He also regularly testifies to the European Parliament, the Bundestag and speaks to corporate boards. In 2020, Business Insider ranked him one of the 28 most influential “power players” in Europe. From 2012-16, he was a member of the French prime minister’s Conseil d’Analyse Economique. In 2018, then IMF managing director Christine Lagarde appointed him to the external advisory group on surveillance to review the Fund’s priorities. In 2021, he was appointed member and co-director to the G20 High level independent panel on pandemic prevention, preparedness and response under the co-chairs Tharman Shanmugaratnam, Lawrence H. Summers and Ngozi Okonjo-Iweala. From 2013-22, he was an advisor to the Mastercard Centre for Inclusive Growth. He is a member of the Bulgarian Council of Economic Analysis, the European Council on Foreign Affairs and  advisory board of Elcano.

    Guntram joined Bruegel from the European Commission, where he worked on the macroeconomics of the euro area and the reform of euro area governance. Prior to joining the Commission, he worked in the research department at the Bundesbank, which he joined after completing his PhD in economics at the University of Bonn. He also worked as an external adviser to the International Monetary Fund. He is fluent in German, English, and French. His work is regularly published and cited in leading media. 

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