Skip to content

Mathieu Vignon



Vignon Mathieu
Mathieu Vignon



Mathieu's practice focuses primarily on advising on the tax aspects of structuring and executing mergers and acquisitions, internal restructurings, cross-border financings, investment funds and debt restructurings.

 He also has significant experience advising on tax aspects of financial instruments, derivatives, fund structures, real estate, asset finance and leveraged finance transactions.

Mathieu is a recognized practitioner by « Best Lawyers » since 2014 in Tax Law

"Mathieu Vignon is particularly active on the tax structuring of acquisitions, financings, disposals and corporate restructurings. One client reports that he is an "excellent" practitioner, while other sources describe him as being "very good at finance matters"."
Chambers Europe 2021 - France (Tax)

"Allen & Overy LLP has a strong transactional practice and a team with leading expertise in financial tax law through Mathieu Vignon who assists leading banks and investment funds with debt fund formation, capital markets and other financial transactions"
Legal 500 EMEA 2021 - France (Tax)

"Mathieu Vignon is a real expert in banking tax law."
Legal 500 EMEA 2021 - France (Tax)

"Leading Individual" (Transactional/Corporate Tax) Legal 500 EMEA 2020 – France (TAX) 

Ranked in Band 3 - CHAMBERS EUROPE 2020 - FRANCE: TAX

"Mathieu Vignon is noted for his expertise in assisting clients with the tax aspects of their finance and capital markets operations. One client praises his "technical excellence and commercial approach," adding: "He thinks through the issues and their applicability to my business challenges. He is very calm under pressure."" Chambers Europe 2019 - France: Tax

"Mathieu Vignon has in-depth knowledge of the tax aspects relating to finance and capital markets operations, including derivatives transactions, refinancing and fund structuring. One interviewee comments: "His advice is practical - it's not just tax advice, he's able to look at the case from a broader perspective."" Chambers Europe 2018 – France: Tax

Mathieu is a recognised practitioner in Legal 500 2018.

News & insights

view of Berlin - new coalition agreement

Publications: 29 NOVEMBER 2021

Germany's new coalition agreement: Change is afoot for the financial services industry?

The three political parties set to form the next German government published a coalition agreement on 24 November. Its part on the German and European financial market in most respects seems to…

Read more
digital transformation concept

News: 29 NOVEMBER 2021

Allen & Overy advises Avenga on the acquisition of Perfectial Group

Allen & Overy has advised Avenga, an international IT and digital transformation technology group, on the acquisition of Perfectial Group.

Read more
front of appartment houses against blue sky

Publications: 25 NOVEMBER 2021

The new coalition agreement in Germany is in place - What are the likely effects for the real estate industry?

The 177-page coalition agreement of the three parties set to form the new government in Germany provides for numerous innovations in the German real estate sector. In future, building and housing is…

Read more
Allen & Overy graphic

Publications: 29 APRIL 2020

Covid–19 coronavirus: a cross-jurisdictional update on the pandemic’s impact on tax regulations

The Covid-19 coronavirus pandemic currently spreading across Europe, Asia-Pacific and the United States has resulted in an unprecedented demand for urgent tax relief measures across industries and…

Read more






Private Equity

Real Estate



Allen & Overy LLP
52 avenue Hoche
75008 Paris

View office →



Admitted to the Bar, New York, 2000

Admitted to the Bar, Paris, 1998


LL.M, International Taxation, New York University, 1999

Post Graduate Degree, Business and Tax Law, University of Paris I, Panthéon Sorbonne, 1996

Published work

  • Restructuration financière des groupes en période de crise: quelques réflexions fiscales, Les Nouvelles Fiscales N°1049, 1 July 2010, co-authored with David Affejee
  • Islamic bonds (sukuks), vers une solution française?, Revue trimestrielle de droit financier, May 2009, co-authored with Romain Pichot
  • Régime fiscal des opérations de titrisation: doutes et certitudes du cédant, Nouvelles Fiscales, September 2008, co-authored with Romain Pichot et Viviane Carpentier
  • Les nouvelles perspectives des GIE fiscaux, RTDF, June 2008, co-authored with David Affejee
  • The introduction of the trust into French law, Butterworths Journal of International Banking and Financial Law, June 2007, co-authored with Fabrice Faure-Dauphin and Sabah Boughida
  • Bank of Scotland : Comment la fraude à la loi peut–elle corrompre les cessions d’usufruit, Revue Trimestrielle de Droit Financier, April 2007, co–authored with Siamak Mostafavi
  • Traitement fiscal des swaps : la fin d’une source d’incertitudes ?, RTDF n°4, 2007, co-authored with David Affejee
  • La fiducie : un régime fiscal dont l’efficacité est conditionnée à l’ intervention de l’administration fiscale, RTDF n°2, 2007, co-authored with Chloë Sebaoun