Corporate Tax Board

Members of the Corporate Tax Board are renowned tax law experts and, as Head of Tax, are responsible for the tax department of a corporate group or an internationally operating company. They are part of the Tax & Legal Excellence network and contribute to the success of the exchange of knowledge through their support.


Holger Engelke

– Head of Tax, Munich Re –

Holger Engelke, business graduate and tax consultant, has worked for Munich Re since June 2001. At the beginning of 2006, he took over as Head of Tax Reporting and since January 2011 has been Head of Munich Re’s central Group Taxation Division. In this function, he is responsible for Munich Re’s tax affairs throughout the Group. His main area of responsibility is Group tax law. Holger Engelke is Chairman of the Finance and Tax Committee of the Chamber of Industry and Commerce Munich and Upper Bavaria, a member of the GDV Tax Committee and a member of the Advisory Board of the Munich Corporate Tax Forum.

Holger Engelke von Tax & Legal Excellence Corporate Tax Board

Felix Hierstetter

– Head of Tax International, GE Power, Renewable Energy, Energy Connections –

Felix Hierstetter, tax consultant, has headed the International Tax Department for various divisions of the General Electric Group since 2015. Prior to this, he was responsible for the Domestic Taxes division for the entire Group. His current area of responsibility includes in particular tax support for the worldwide project business and the regional business units. Until 2004, he was a partner at KPMG Deutsche Treuhandgesellschaft, where he focused on group tax law, transformation tax law and transfer pricing. Felix Hierstetter is Chairman of the Tax Committee of the American Chamber of Commerce in Germany.

Felix Hierstetter von Tax & Legal Excellence Corporate Tax Board

Dr. Mathias Hildebrandt, MBL

– Head of Tax, Bauer Media Group –

Mathias Hildebrandt, has headed the central tax department of the Bauer Media Group since 1 January 2021. Previously, he was Senior Vice President Group Tax of the ProSiebenSat1 Group and before that he built up the central tax department of the Zalando Group in Berlin for more than four years. He began his tax career as a consultant in Berlin and then as an in-house expert in the tax department of British American Tobacco in Hamburg for six years. Mathias Hildebrandt is co-founder of the discussion group “Steuerbo(a)rd” for in-house tax professionals in Northern and Eastern Germany, founding member of YIN e.V. (Young IFA Network) and holds memberships in the advisory board of the IFA section Berlin-Brandenburg, in the finance and tax committee of the DIHK, in the tax and finance policy committee of the Vereinigung der Bayerischen Wirtschaft e.V. (Bavarian Business Association). (VBW), in the BDI working groups on international tax issues and corporate taxes, and in the AWV e.V. working group on transfer pricing.


Dr. Michael Hölzl

– Head of Tax, Customs, Shareholdings and Branch Management of Siemens Energy SE –

Michael Hölzl, business graduate and tax consultant, has headed the Tax, Customs, Shareholdings and Branch Management Group of Siemens Energy SE, which was created from Siemens AG Power and Gas, since December 2019. Prior to this, he was responsible for OSRAM’s global tax functions from 2011 to 2019. In this function, he played a key role in the IPO of OSRAM Licht AG. He is also responsible for credit management and investment management. Prior to this, he worked for Siemens AG for many years, where his last position was Head of Strategic Tax Planning. He is the author of numerous publications in the field of taxation and is well known for his numerous lectures. Michael Hölzl is a member of the tax working group of the Schmalenbach-Gesellschaft, the executive committee of the Bavarian IFA section and the tax committee of the BDI.

Dr. Michael Hölzl von Tax & Legal Excellence Corporate Tax Board

Annette Linau, LL.M.

– Global Head of Tax of Evonik Industries AG –

Anette Linau, LL.M., lawyer and in-house lawyer, has been Global Head of Tax at Evonik Industries AG since November 2022. In this role, she is responsible for group-wide tax matters at Evonik Industries and is also a member of the Executive Board of Evonik Stiftung and a member of the Supervisory Board of Evonik Operations GmbH. Before joining Evonik Industries, she worked for more than 15 years in various positions in tax and finance at Innogy SE and the RWE Group. Annette Linau has been a board member of the Institute for Digitalisation in Tax Law since April 2021.


Bettina Rodenberg

– Global Head of Tax & Trade, Henkel AG & Co. KGaA –

Bettina Rodenberg, lawyer and tax consultant, has been head of the tax and customs department of Henkel AG & Co. KGaA since Mai 2020 and bears global responsibility for all tax and customs issues and projects. Previously, she worked for Beiersdorf AG from 2013 to 2020, where she was initially responsible for the domestic tax department for the entire Group and later the tax and customs department. Until 2010, she worked for PricewaterhouseCoopers AG in the areas of group tax law, transformation tax law and transfer pricing. Bettina Rodenberg is, among other mandates, member of the tax committee of the German Chemical Industry Association (VCI).


Christoph Ludwig Rummel

– Head of Tax, AXA Konzern AG –

Christoph L. Rummel, M. A., graduate in business and finance, tax consultant, has been responsible for all tax matters of the AXA Group in Germany since 2003 as Director and Head of the Tax Division at AXA Konzern AG. In addition to the classic topics of corporate tax, his responsibilities include the areas of investment taxation and the taxation of insurance products. He represents the AXA Group’s tax interests with the German Insurance Association (GDV) and the Private Health Insurance Association (PKV) in various tax committees and commissions. Christoph L. Rummel has been head of the Commission for Value Added Tax, Insurance Tax and Wage Tax at the GDV since January 2016.

Christoph Ludwig Rummel von Tax & Legal Excellence Corporate Tax Board

Matthias Schubert

– Global Head of Tax, Infineon Technologies AG –

Matthias Schubert, attorney-at-law and tax consultant, has been Global Head of Tax at Infineon Technologies AG in Neubiberg, Germany, since July 2015. Previously, he was responsible for the taxes of the Group’s European subsidiaries at State Street. Until 2010, he worked for KPMG Deutsche Treuhandgesellschaft in the International Corporate Tax department, focusing on international mergers and acquisition structuring. Matthias Schubert is also a member of the Finance and Tax Committee of the Munich and Upper Bavaria Chamber of Commerce and Industry (IHK) and of the Executive Committee of IFA Bayern.

Matthias Schubert von Tax & Legal Excellence Corporate Tax Board

Kerstin Schulz

– Global Head of Tax of the Lufthansa Group –

Kerstin Schulz has been Global Head of Taxation at the Lufthansa Group since July 2022. In this function, she is responsible for the tax function of the entire Lufthansa Group in addition to the customs function of Lufthansa AG. She is a member of the Lufthansa Group’s global lead team and other committees. She is also a member of the supervisory boards of Lufthansa Cargo AG, Lufthansa Technik AG and Eurowings GmbH. She previously worked as Global Head of Tax and Customs at Beiersdorf AG for two and a half years until July 2022, where she was in charge of taxes, customs and export control for the Beiersdorf Group. Prior to that, Kerstin Schulz worked for nine years as Corporate VP for Tax for Fresenius SE & Co KGaA.


Dr. Jan Sedemund, LL.M. taxation

– Global Head of Tax, Deutsche Post AG –

Jan Sedemund, lawyer, specialist lawyer for tax law and tax consultant, has been Head of Corporate Tax Law at Deutsche Post in Bonn with global responsibility since July 2014. He previously held the same position at Lufthansa from 2012 to 2014, where he was responsible for the tax function worldwide with around 70 professionals. As a proven expert in international corporate tax law, he has published numerous scientific articles in specialist journals.  Jan Sedemund is also a lecturer at the Federal Finance Academy in the fields of international tax law, transformation tax law and inheritance tax law.