Tax Consulting - Assurance - International Tax Consulting

Dipl.-Kfm. 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

Speak with our Experts: 

+49 221 940 50 70
Mon to Fri from 9.00 am till 6.00 pm