Personalities
Movers and shakers with expertise
Our experts come from a wide range of different fields. What they all share is the same integrated approach to consulting – and the same goal: to join forces with you to achieve the best possible results for you. We love new challenges. But we don’t do things by half measures. When we do something, we do it right. And we enjoy doing it.
Search and find
Looking for a point of contact for a specific issue or specialist field? Feel free to use our search function. If you want to search for a specific name, the alphabetic team overview can take you straight to what you are looking for. This section lists contact information as well as areas of expertise and practice areas.
All of us look forward to getting to know you – and to working with you to find just the right solution for your individual needs.
Irja Simon
Tax Consultant
Focus of services
- Tax advice for national and international corporations and groups of companies
- Preparation of income tax returns for corporations and partnerships
- Support during tax audits
Professional career
- Tax consultant at ADLK (since 2024)
- Tax consultant at Deloitte (2017 – 2024)
- Tax consultant at Ernst & Young (2016 – 2017)
- Tax consultant at Deloitte (2009 – 2015)
- Appointment as tax consultant (2008)
- Warth & Klein Grant Thornton AG (2003 – 2008)
- Studies: Economics, University of Paderborn (1996 – 2002)
Irja Simon
Tax Consultant
Marc Sarburg
public auditor, lawyer, tax advisor, specialist lawyer for tax law
Specific industry knowledge
- Automotive
- Packaging industry
- Information technology
- E-sports
Publications
- Foreign family foundations in tax administration practice, German tax law 41/2019, page 2111-2115
- Continuation of business in the light of the obligations of the financial statements provider, WpG 2017, pages 1179-1188
- Inheritance tax option for unlimited tax liability is contrary to EU law, Die Wirtschaftsprüfung 2016 page 1256-1264
- Effects of the Hünnebeck decision on optional regulations of German (inheritance) tax law, German tax law 2016 page 2777-2782
Focus of services
- Support in disputed tax law matters (administration, FG, BFH, CJEU)
- Multidisciplinary advice to business leaders
- Advice to family companies also in executing wills
Professional Career
- Board member of MSI Global Alliance (since 2019)
- Speaker for the IDW Academy – further training of auditors (since 2017)
- Lecturer in tax law, German Academy for Tax, Law & Economy – Abels Kallwas Stitz, Cologne (since 2016)
- Appointment as auditor (2013)
- Partner at ADKL (since 2015) along with predecessor companies (since 2008)
- Appointment as tax advisor (2006)
- Prast & Kollegen, Wesel
- 4 years Big Four, Düsseldorf
- Studies: Law, Cologne (Lawyer since 2002)
Memberships
- Member of the “Trendwatch” committee at the Institute of Auditors
- Member of the Board of Directors of the Association of Taxpayers North Rhine-Westphalia e.V.
Marc Sarburg
public auditor, lawyer, tax advisor, specialist lawyer for tax law
Edda Steiger
Tax Consultant
Focus of services:
- Taxation of individuals
- Company taxation
- Taxation of annual accounts
Professional career:
- Tax consultant at ADKL (since 2021)
- Appointment as tax consultant (2020)
- Studies of Business Administration at the University of Hamburg (Diploma 1991)
- Dual studies at Hamburg University of Applied Sciences for Finance (Diploma 1985)
Edda Steiger
Tax Consultant
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