About Mathilde Ostertag

Mathilde Ostertag is a partner at AKD who specialises in tax matters, with a strong track record advising on the tax and legal aspects of structured finance, securitisation, capital market transactions, and investment fund structuring in Luxembourg. Her clients include global fund managers, financial institutions, corporates, and private equity investors.

She has significant experience handling domestic and international tax planning, SME M&A deals, corporate reorganisations and ESOPs.

Mathilde is known for her practical, client-driven approach to complex tax structuring and regulatory advice.

Key Recognitions:

  • Chambers Europe 2025: Band 4 – Tax (Luxembourg)
  • ITR World Tax: Highly Regarded Practitioner (2024–2025)
  • IFLR1000: Notable Practitioner (2023–2024)
  • Legal 500 EMEA: Recommended Lawyer in Tax (2023–2024)

She is a member of the Luxembourg Bar and speaks English, French, German and Portuguese.

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More about
Mathilde

Education
  • Université Robert Schuman, Strasbourg (France) and Freie Universität, Berlin
  • Master’s degree and post graduate degree in corporate and tax law
  • Tax specialisation (DJCE)
Admitted to bar
  • Luxembourg
Membership
  • International Bar Association: regular speaker and panelist
  • Luxembourg Ladies in Law Association (LILLA): board member
  • Lux CMA: active member of the tax committee
  • International Fiscal Association: board member of the WIN (Women in network) local branch
  • Women in Business: member