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.

• Tax, Corporate Tax
• International Tax Planning
• Private Equity, Foreign Investments
• Real Estate
• Funds
• VAT
• Management Incentive Programmes
• Compliance/KYC/Exchange of information/DAC 6
• Tax litigation

• Real Estate Investments & Asset Management
• Financial Services
• Funds
• Capital Markets

• Young International Fiscal Association (Young IFA)
• International Fiscal Association (IFA)
• International Bar Association (IBA)
• President of the Ladies in Law Luxembourg Association (LILLA)

• Lawyer, admitted to the Bar in Luxembourg (2008)
• Avocat à la Cour
• Université Robert Schuman, Strasbourg (France) and Freie Universität, Berlin
• Master’s degree and post graduate degree in corporate and tax law
• Tax specialisation (DJCE)