Practice Areas

  • 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
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Education and Professional Experience
  • 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)
  • Practiced within a Benelux and an international law firm in Luxembourg for the past nine years
Languages
  • English, French, German, Portugese
Memberships
  • Young International Fiscal Association (Young IFA)
  • International Fiscal Association (IFA)
  • International Bar Association (IBA)
  • President of the Ladies in Law Luxembourg Association (LILLA)
Publications
  • Ostertag, M. and Schiffmann, K. (2019). Luxembourg. International Comparative Legal Guide: Corporate Tax 2020, 16th ed. London: Global Legal Group, pp. 157-165.
  • Ostertag, M. (2019). Folgen der ATAD-2-Richtlinie für Fondsstrukturen. Börsenzeitung, Nummer 211, Seite B 8.
  • Ostertag, M., Schiffmann, K. and Kleinschmidt, A. (2019). Luxembourg: Tax. The Inhouse Lawyer by Legal500, 4th ed. London: Legalease.
  • Ostertag, M. and Chmiel, K. (2018). Luxembourg. International Comparative Legal Guide: Corporate Tax 2019, 15th ed. London: Global Legal Group, pp. 163-170.
  • Ostertag, M. and Diallo, Y. (2015). Le ruling TVA: enjeux et perspective. Ed° Les Collégiales du droit. Luxemburg: Legitech, pp. 223-238.
  • GSK Updates
    12 June 2020

    Updated: Tax measures during the state of emergency

    Revised summary of the tax measures taken in Luxembourg during the state of emergency The changes are as follows: Bill n°7555 adapting deadlines in tax matters voted Bill n°7541 in...

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  • GSK Updates
    08 April 2020

    Updated: New tax measures in response to the COVID-19 state of emergency

    Revised summary of all recent tax measures taken in Luxembourg during the state of emergency The changes are as follows: Bill n° 7541 has been criticised by the Luxembourg State Co...

    Read more
  • GSK Updates
    24 March 2020

    New tax measures in response to the COVID-19 state of emergency

    Summary of the specific measures taken by the Luxembourg direct tax authorities (“LDTA”), the Luxembourg indirect tax authorities (“LITA”) and the Luxembourg Business Register (“LB...

    Read more
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