Our Locations

Cologne – Konrad-Adenauer-Ufer

SBB Partner Cologne

Business Center “21st”
Konrad-Adenauer-Ufer 21 – 23 /
Kunibertsgasse 10
50668 Cologne

Phone: +49 221 940 507-0
Fax: 0221 / 940 507-30

Diplom-Kaufmann Guido H. Siebert
Certified public accountant, Tax advisor

Phone: +49 (0) 221 940 50 70
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Diplom-Ökonomin Barbara Begert
Tax advisor, Expert international tax law, Audit manager

Phone: +49 (0) 221 940 50 70
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Hanna Miehahn, Master of Arts, Tax Advisor, Audit Manager


2011-2014 Studies of economics at the university of Cologne

2014 Degree Bachelor of Science

2015 Studies in law of taxation at the Rheinische Fachhochschule of Cologne

2016 Degree Master of Arts

2017/2018 German tax consultant exam

2018 Appointment as German tax consultant


2014  3 month of internship at SBB Partner

2015  integrated degree program at SBB Partner

since 2016: tax consultant assistant at SBB Partner

since 2018 qualified tax consultant in an employment relationship as per §58 StBerG

  • preparation of annual financial statements, annual balance sheets, financial reports and tax balance sheets
  • advise on national and international tax issues including reorganizations
  • preparation of tax returns on individuals and companies

Sabine Koenigshoven, Diplom-Betriebswirtin (FH), Tax advisor


Studies of business administration at the Fachhochschule Köln (technical college Cologne)

1992-1994 Qualified tax consultant assistant
1995-1999 Business studies at the Fachhochschule Köln (technical college Cologne)
1999 Graduation in bachelor of business administration
2005 German tax consultant exam


2000-2006 Tax assistant and tax consultant in the tax department of Ernst & Young AG, Cologne

  • Preparation of tax returns for individuals and companies
  • Advise on national and international tax issues including reorganizations
  • Preparation of annual financial statements, annual balance sheets, financial reports and tax balance sheets

2005 German tax consultant
Since 2007 Independent tax consultant

SBB Partner Cologne

Berlin – Berlepschstraße

SBB Partner Berlin

Berlepschstr. 1
14165 Berlin

Phone: +49 30 398 30 353
Fax: 030 / 815 14 75


Dipl.-Kfm. Ursula Rühle, Tax Advisor, Manager of SBB Berlin

Studies / Training

  • Studies of Business Administration at Mannheim University
  • German tax consultant appointment in 1991
  • Examination to public German accountant in 1993
  • registered as a statutory auditor in the professional register of the WPK
  • registered as an inspector for quality control according to §57a (3) WPO in the professional register of the WPK


  • 10 years working for a large international accounting firm, most recently as an authorized officer
  • thereafter activity in a medium-sized auditing company
  • self-employed auditor and tax-consultant since 1999


Main activities

  • Statutory and voluntary final examinations
  • company valuations
  • quality controls
  • business and tax advice for small and medium-sized companies

Diplom-Kaufmann Guido H. Siebert, Certified Public Accountant, Tax Advisor

20 years experience with a large international accounting firm. After his public accountant exam in 1994 he worked as a senior manager, was then appointed to a partner, managed a large German branch and held several executive positions within the international network.

  • Degree as Diplom-Kaufmann at the University of Cologne
  • 1986 to 1990 at the partnership Bergemann and Begert
  • Examination to tax consultant
  • Examination to German public accountant
  • Former member in several committees of the Institute of Public Auditors in Germany and of the Accounting Standards Committee of Germany
  • Author of several articles pertaining to Accounting and Assurance

Main activities

  • Performing national and international audits in accordance with national and international accounting standards and standards on auditing
  • International tax consultancy
  • Review of business plans and risk-management-systems
  • Performing special audits
  • Tax law (income tax, corporation tax, local business tax)
  • Out of court legal assistance proceedings and fiscal court proceedings
  • Assistance by audit of tax authorities
  • Supporting municipal owned corporations
  • Expert opinions
  • Business valuation and due diligence
  • Special expertise in a large number of industries
  • Fluent English

SBB Partner Berlin