Company history


KONLUS opens a branch in the MediaPark in Cologne.



KONLUS concentrates on its core competencies, namely tax consultancy, auditing and management consultancy. Lawyers previously employed at KONLUS continue their activities within their own practice.


The consultancy firm is now managed by the following five partners:

Carl Erik Koehler      Auditor, tax consultant, CVA

Horst Neumann        Chartered accountant, tax consultant

Birgit Koehler           Tax consultant

Alexander Neu         Auditor, tax consultant

Christoph Kneip       Auditor, tax consultant, CPA (USA)


KONLUS has approximately 45 employees.



The success enjoyed by KONLUS enables it to continue to keep its doors open to first-class consultants and therefore hires five new partners.



In November, KONLUS expands its international connections and becomes a member of PrimeGlobal, a worldwide association of independent auditing and tax consultancy companies.



In August, our partner Carl Erik Koehler (Dipl. Kfm), who is an auditor and tax consultant, is appointed as a certified valuation analyst (CVA). Thanks to its professional specialisation, KONLUS expands business valuation and value-based consultancy as one of its core competency fields.



In October, the firm celebrates its 10th birthday.


In April, Josef Sauerwald ceases to be an active partner in the firm. In May, he is awarded the German Federal Cross of Merit for his professional services. Josef Sauerwald remains the president of the German Federal Association of Tax Consultants and the German Association of Tax Consultants and Chartered Accountants in Cologne. He continues to provide his tax consultancy services to the firm.



Towards the end of the year, Helmut Hering ceases to be an active partner of the firm. He is still involved with KONLUS and continues to work as a tax consultant.


Also, towards the end of the year, Ingo Heuel (lawyer, tax consultant, specialist lawyer for taxation law) joins the firm as partner. The firm now has 6 partners and 48 employees.


In October, IT AUDIT GmbH Wirtschaftsprüfungsgesellschaft, which specialises in IT system audits, is established.



At the end of the year, the firm has 6 partners and 45 employees.


In the autumn, KONLUS GmbH Wirtschaftsprüfungsgesellschaft is established.



At the end of the year, the firm has 6 partners and approximately 40 employees.


In March, Andreas Schmincke (auditor and tax consultant) joins the firm as partner. At the same time, the firm merges with a practice owned by Josef Sauerwald (auditor and tax consultant) who has had his own practice in Bensberg for the past 25 years. The firm becomes "KONLUS" and it obtains a new logo.



The firm, which comprises three offices, moves to a new, modern office space in Schloss-Forum-Bensberg in Schloss-Strasse 20. At the end of the year, the number of employees increases to 25.



In March, Dr. Jörg Luxem (lawyer and tax consultant) becomes a partner in the firm. At the end of the year, the firm employs 20 people.



CURATOR Treuhand- und Steuerberatungsgesellschaft, which Horst Neumann founded prior to establishing the firm, becomes a cooperation partner.



The firm is established by Carl Erik Koehler (auditor and tax consultant), Horst Neumann (chartered accountant and tax consultant) and Helmut Hering (auditor and tax consultant) who also has his own practice in Bensberg. The firm opens its doors with three partners and ten employees.


Schloss-Straße 20
51429 Bergisch Gladbach
Tel.: +49 (0) 22 04 / 9 50 81 00
Fax: +49 (0) 22 04 / 9 50 81 10

Service Hotline

+49 2204 9 50 81 00


Im Mediapark 5a
50670 Köln
Tel.: +49 (0) 221 / 95 26 81 - 170
Fax: +49 (0) 221 / 95 26 81 - 113


Kurfürstendamm 182
10707 Berlin
Tel.: +49 (0) 30 / 88 62 54 - 94
Fax: +49 (0) 30 / 88 62 73 - 98

Company history