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Portrait ofSibylle Novak

Sibylle Novak


CMS Reich-Rohrwig Hainz
Rechtsanwälte GmbH
Gauermanngasse 2
1010 Vienna
Languages German, English

Sibylle Novak is an attorney for Tax Law. She is a partner at CMS and an expert in national and international tax law. She is one of the few lawyers in Austria with a dual authorisation to practise as both a lawyer and a tax advisor and has more than 25 years of professional experience.

She works mainly in the areas of tax optimisation of transactions, mergers & acquisitions, restructurings, private foundations and private equity / venture capital.

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"Sibylle Novak – understanding her client’s needs, providing comprehensive advise on various tax issues."

The Legal 500, 2022

"Dr Novak has excellent specialist knowledge. She is reliable and has exceptionally good analytical capacity."

The Legal 500, 2022

"We did not see before that someone could deliver legal & tax in one hand like the team around Sibylle Novak – that’s unique. Her strengths are quick & practical solutions."

The Legal 500, 2021

Memberships & Roles

  • Austrian Bar Association
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Awards & Rankings

  • The German business newspaper Handelsblatt ranks Sibylle Novak among the best lawyers in the legal field of tax law (Best Lawyers Ranking 2020).
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  • 2002 – Dr.in iur., Law, University of Vienna
  • 2000 – Mag.a iur., Law University of Vienna
  • 1995 – Mag.a rer. soc.oec., Vienna University of Economics and Business Administration
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New amendments to double taxation agreements (DTA) with Germany, China,...
CMS Tax News | November 2023
Tax News | Tax risks for managing directors in CEE
CMS Tax News | May 2023
International Home Office | Steuerrecht
CMS Employment Snack 
CMS advises Siemens Austria on sale of Austrian facility management business
Apleona acquires Siemens Ge­bäu­de­m­an­age­ment und -Services (SGS). CMS Vienna provides comprehensive legal support to Siemens Aus­tria.   Siemens Austria has agreed to sell Siemens Ge­bäu­de­m­an­age­ment & -Services G.m.b.H. (SGS) to Apleona. The closing of the transaction is expected in the third quarter of the financial year and is subject to customary antitrust approvals. Both companies have maintained a good and close relationship for years. SGS will be further strengthened by joining forces with Apleona, resulting in an expanded and improved range of ser­vices.   Siemens Austria is being legally advised and supported by the Viennese law firm CMS Reich-Rohrwig Hainz under the leadership of Alexander Rakosi, partner in the Corporate/M&A department. The core CMS team further consists of M&A experts Florian Mayer, Marie-Christine Lidl, Anna Hiegelsperger and Matthias Emich. Sibylle Novak and Alexander Hiermann deal with tax law issues, Andrea Potz, and Jens Winter assist on labour law topics and Bernt Elsner and Marlene Wim­mer-Nistel­ber­ger advise on competition law. Additional support during the course of the transaction came from Daniela Karollus-Bruner, Robert Keisler, Dieter Zandler and Clemens Gross­may­er.   Al­ex­an­der Rakosi is pleased with the successful deal signing: “We are proud to be able to support Siemens on this project with a cross-de­part­ment­al team and contribute to further entrenching Siemens as a focused technology company in Aus­tria.”   Siemens Ge­bäu­de­m­an­age­ment & -Services ¬G.m.b.H., based in Vienna, is a successful man­u­fac­turer-in­de­pend­ent full-service provider in the technical building¬ management¬ sector with around 260 employees. Its customers include institutions from the health care, culture and education, trade and logistics sectors, as well as renowned commercial enterprises. In the last business year, it achieved a turnover of around 75 million euros.
CMS and KPMG Legal Advise on Greiner’s Sale of Extrusion Division to Nimbus
Published on CEE Legal Matters | February 23, 2022 CMS has advised Greiner on the sale of its extrusion division, including operational assets in Austria and the Czech Republic, to Nimbus. KPMG Legal advised Nimbus.Greiner is an Austrian plastics and foam specialist company.
An international expert team from CMS advises Greiner AG on the successful...
Shortly before the beginning of the year, CMS Austria supported the Austrian plastics and foam specialist Greiner AG on the successful sale of its extrusion division, including the associated operational real estate in Nußbach, Upper Austria, and Trhové Sviny, Czech Republic. On 21 December 2021, the German Federal Cartel Office approved the sale of the Austrian- based Greiner Extrusion Group (GEG) to the Dutch-German investment company Nimbus – the majority owner, amongst other things, of bat­ten­feld-cin­cin­nati, one of CEG’s competitors with subsidiaries in Germany, Austria, the USA and China. The now affiliated companies intend to exploit synergies in purchasing, at least. Otherwise, both entities will remain independent companies with their organisational structures and market presence. As part of the transaction, the experts of the CMS advisory team, led by Alexander Rakosi, Florian Mayer and Anna Hiegelsperger, had to navigate numerous complex legal topics on trans­ac­tion-re­lated aspects as well as in the areas of real estate law and an­ti­trust/com­pet­i­tion law. The internationally experienced team of experts at CMS Austria also included Dieter Zandler (antitrust law), Vanessa Horaceck (competition law), Hans Lederer (trademark law), Johannes Hysek (real estate law), Mariella Kapoun (real estate), Sibylle Novak (international tax law), Thomas Aspalter (tax law), Cornelia Kreuth (M&A), Christoph Birner (financing) and Alexandros Hantasch (corporate trans­ac­tions). In addition, the Austrian advisory team was also supported by colleagues from other CMS offices. The international CMS team consisted of Stepan Havranek (CZ), Eva Bryndova (CZ), Michael Munzinger (PRC), Lei Shi (PRC), Dipesh Santilale (UK), Sabby Kenzie (UK), Margaux Deuchler (F), Thomas Hains (F), Blazej Zagorski (PL) and Marta Osowska-Buba (PL). Lead partner Alexander Rakosi happily notes: “International transactions bring multi-faceted challenges. We are glad to have been able to provide comprehensive legal advice to the Greiner Group from project kick-off to its successful closing across all countries.”
Climate change taxation reforms and incentives in Austria
1. Has your country ratified the Paris Agreement?  Yes, 5 October 2016. 2. Has your country introduced environmental taxes? 2.1 Energy taxes Mineral oil tax (Min­er­alöl­steuer): Mineral oil produced...
ALPLA continues to expand: CMS advises on acquisition of packaging manufacturer...
The internationally active specialist in recycling and packaging solutions ALPLA is adding to its already broad product portfolio. ALPLA was advised by CMS again on its recent acquisition of Wolf Plastics Group.
CMS Reich-Rohrwig Hainz advises private equity investor Finexx on the acquisition...
The international business law firm CMS has advised the German investment company Finexx on its acquisition of Volpini Verpackungen GmbH Austria. While the Finexx (founded in 2013) was able to increase...
CMS and KPMG Law Advise on Plastic Omnium's Establishment of Joint Venture...
Increase In Criminal Financial Proceedings!
Managing directors and board members are increasingly being prosecuted in financial criminal proceedings following tax audits. CMS Vienna has a strong tax law team. Partner Sibylle Novak and at­tor­ney-at-law...
CMS advises Plastic Omnium on establishment of joint venture with ElringKlinger
Dus­sel­dorf/Vi­enna -  In order to drive forward the development of hydrogen mobility, the two automotive sup­pli­ers El­ringK­linger and Plastic Omnium will create a joint venture for the development...