Tel. 02331 / 3 48 88 - 0


We currently have a team of eight co-workers to support your needs. Besides our two CEOs, both fully certified tax consultants (Steuerberater), we have one certified Tax Specialist (Steuerfachtwirtin), two fully trained Tax Clerks (Steuerfachangestellte), two experienced Accountants / Bookkeepers and a trainee.

With extremely low employee turnover, our firm provides consistent support for clients in managing their financial bookkeeping, wage and salary administration, as well as in the preparation of annual statements and tax declarations for both individuals and businesses.

Michael Katthagen

Certified Tax Consultant (Steuerberater)
Certified Public Accountant (Wirtschaftsprüfer)

  • 1970 Born in Hagen
  • 1991 Abitur - Theodor Heuss Gymnasium in Hagen
  • 1991-1995 Studied Business Administration at Münster University (Westfälischen Wilhems Universität Münster)
  • 1995 Awarded Dipl.-Kaufmann
  • 1995-1999 Worked at one of the “Big Four” accounting firms, Essen
  • 2000 Passed the German Tax Consulting Exam (Steuerberaterexamen)
  • 2000-2001 Worked for a mid-size accounting firm in Essen
  • 2002 Began work at Katthagen Steuerberatungs­gesellschaft mbH 
  • 2002 Passed the German CPA exam

Thorsten Böger

Certified Tax Consultant (Steuerberater)

  • 1994 -1997 Ausbildung for Assistant Tax Consultants (Steuerfachangestellter)
  • 1997 Joined Katthagen Steuerberatungs­gesellschaft mbH
  • 2002 Passed the German Tax Specialist Exam (Prüfung zum Steuerfachwirt)
  • 2012 Passed the German Tax Consulting Exam (Steuerberaterexamen)
  • 2012 Became a CEO in Katthagen Steuerberatungs­gesellschaft mbH

Christina Pfeiffer

Tax Specialist (Steuerfachwirtin)

  • 1987 Joined Katthagen Steuerberatungs­gesellschaft mbH
  • 1987 - 1990 Ausbildung for Assistant Tax Consultants (Steuerfachangestellte)
  • 1994 Passed German Tax Specialist Exam (Prüfung zur Steuerfachwirtin)

Eva-Maria Bücker

Tax Clerk (Steuerfachangestellte)

  • 1984 Joined Katthagen Steuerberatungs­gesellschaft mbH
  • 1984 -1987 Ausbildung for Assistant Tax Consultants (Steuerfachangestellte)

Andrea Schmitz

​Tax Clerk (Steuerfachangestellte)

  • 2002 - 2004 Ausbildung for Assistant Tax Consultants (Steuerfachangestellte)
  • 2013 Joined Katthagen Steuerberatungs­gesellschaft mbH

Christine Ochse

Accountant specialized in Office Management (Bürofachwirtin)

  • 1991-1993 Ausbildung for Office Clerk (Bürokauffrau)
  • 1999 Passed German exam for Office Management (Prüfung zur Bürofachwirtin)
  • 2011 Joined Katthagen Steuerberatungs­gesellschaft mbH

Ewelina Wojdyla

  • Auszubildende zur Steuerfachangestellten
  • 2022 Eintritt in das Unternehmen

Angelika Bangert

Accountant specialized in Insurance (Versicherungskauffrau)

  • 1968 – 1971 Ausbildung for Insurance Management Clerk (Versicherungskauffrau)
  • 2003 Joined Katthagen Steuerberatungs­gesellschaft mbH