Prof. Dr. Markus Rübenstahl, Mag. iur.

Rechtsanwalt – Partner

Rechtsanwalt Prof. Dr. Rübenstahl has worked as a defense lawyer and in an advisory capacity in the areas of white collar crimes, criminal law and criminal tax law for over fifteen years. He began his career at a law firm which specialized in appeals of criminal cases at the Federal Court of Justice’s seat in Karlsruhe. He has also worked in large international law firms in Frankfurt, with an increasing focus on the areas of compliance and internal investigations. Between 2015 and 2017, he was a successful attorney and founding partner of a renowned boutique criminal-law firm specializing nationwide in medical, white collar, and criminal tax-law with offices in Cologne, Frankfurt am Main, and Berlin before founding the law office of Rübenstahl Rechtsanwälte (Rübenstahl and Associates) in 2018.


Languages: German, English, Italian

Publications: Download

Presentations: Download

Business card: Download

Vcard (VCF-File): Download

  • Awarded with the high quality seal „TOP Kanzlei & TOP Anwalt – Compliance“; 2019, 2020, 2021
    (WirtschaftsWoche 15/2019, 18/2020, 04/2021)
  • One of GERMANY’S BEST LAWYERS 2017, 2018, 2019, 2020, 2021, 2022 & 2023 in the field of criminal tax law, honoured by the publishing company Handelsblatt in cooperation with the US-publisher Best Lawyers.
    ( | Deutschlands Beste Anwälte | 06/2017, 07/2018, 06/2019, 06/2020, 06/2021, 06/2022, 06/2023)
  • THE BEST LAWYERS™ IN GERMANY 2018, 2019, 2020, 2021, 2022, 2023 & 2024 in the field of criminal tax law, honoured by the US-publisher Best Lawyers!
    (Best Lawyers® Liste Deutschland)
  • „An attorney who comes frequently recommended for criminal tax law“
    (JUVE Handbuch Wirtschaftskanzleien 2017/2018)
  • „An attorney who comes frequently recommended in the area of white-collar crimes (providing counsel to companies)“
    (JUVE Handbuch Wirtschaftskanzleien 2017/2018)
  • „In addition to their recognized work in the area of white-collar crimes law, the highly respected criminal tax law practice of the Cologne firm has grown in significance and increasingly raised its profile.“
  • „Recommended by name in the area of criminal tax law“
    (JUVE Handbuch Wirtschaftskanzleien 2016/2017)
  • „Professionally in the top of his field“
    (JUVE Handbuch Wirtschaftskanzleien 2015/2016)
  • „Many years of experience in the area of compliance“
  • „Is a recommended lawyer in the area of dispute resolution“
    (The Legal 500 Deutschland 2014)
  • Honorarprofessor at the Albert-Ludwigs-Universität, Freiburg im Breisgau
  • Co-editor of the Journal of White Collar and Criminal Tax Law (wistra)
  • On the board of and scientific coordinator for the White Collar Crime Law Association (WisteV)
  • Co-editor of the Journal of the White Collar Crimes Law Association (WiJ)
  • Advisor of the leading Italian criminal-law journal “Diritto penale contemporaneo” (DPC)
  • Permanent contributor to the New Journal for White Collar Crimes Law (NZWiSt)
  • Member of the panel of experts of the research group for criminal law at the University of Cologne (subsidized by the Volkswagen Foundation)
  • Member of the German-Italian Lawyers’ Association (DIJV)
  • Member of the German-American Lawyers’ Association (DAJV) and the American Bar Association – Criminal Justice Section (ABA CJS)
  • Member of the European Fraud & Compliance Lawyers (EFCL) and the European Criminal Bar Association (ECBA)
  • Popular speaker and panelist for white collar crime and criminal tax law issues, international legal bearings of the case as well as compliance and investigations
  • Member of the ABA CJS Global Institute Planning Committee

Dr. Lars Kreßner

Rechtsanwalt – Associate Lawyer

Rechtsanwalt Dr. Lars Kreßner has been working for Rübenstahl Rechtsanwälte since 2018, since 2020 as an employed attorney.


After studying law at Johannes Gutenberg-University in Mainz and completing his legal clerkship, Dr. Kreßner initially worked as a research assistant at the chair for European law, civil law, commercial and commercial law, comparative law of Prof. Dr. Meinrad Dreher, LL.M. (Johannes Gutenberg University Mainz) from 2002-2004.


He received his doctorate in 2005 with a dissertation on the topic “The ban on procurement law” under Prof. Dreher. He then worked as a lawyer in commercial law for many years. After that he was a civil servant in the higher service of a state financial administration and gained experience in the field of ​​tax investigation and the external audit (tax audit). As head head of department, he was responsible for assessment and uniform collection for several years. He has been working for Rübenstahl Rechtsanwälte since 2018.


Languages: German, English

Publications: The ban on procurement law, Bundesanzeiger Verlag, 2006

Prof. Dr. Markus Rübenstahl (Steuerstrafrecht) - Beste Anwälte 2023
Prof. Dr. Markus Rübenstahl - Best Lawyers 2024