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The firm

TREU-GMBH was founded in 1921 and is one of Germany’s oldest auditing companies. Two business partners and currently eight employees provide top-quality services.

Our aim is to offer reliable, customised support to our clients. We attach great importance to the personal trust you put in our expertise and experience. Our role is to act as “family doctor” for your company and serve as your contact for any business management and legal issues you may have.

Owing to our independent status and the personal support we provide, we can afford to be very flexible in catering to your needs. Since our employees come from various walks of life (business management, economics, law) and our client base is highly heterogeneous in terms of their branch of industry and legal form, we have a broad knowledge base and lots of experience to serve your interests.

National and international contacts

TREU-GMBH is an independent accounting and tax consulting firm based in Frankfurt am Main. We closely cooperate with our partner offices of IAPA Deutschland AG, located in the major German business areas, IAPA International as well as UK 200. As the partners of the various consultancies all know each other personally we have created a communication system that guarantees optimal consultation to all our clients in their nationwide and international business activities. Via our membership with IAPA and the UK 200 group we have access to the professional expertise of more than 200 accounting firms worldwide.

IAPA International is an association of independent firms and can not and will not offer services in the areas of auditing and tax themselves. Each member of IAPA International is an independent company and a separate legal entity. IAPA International is neither a partnership nor a network. All KBHT group companies are each independent of IAPA International and its members and do not act as a representative of IAPA International or of any member of IAPA International.


Lyoner Straße 44 - 48
60528 Frankfurt am Main
Phone +49 69 631579-0
Fax +49 69 6313641


TREU-GMBH, work: Lyoner Straße 44 - 48, 60528 Frankfurt am Main, Germany, work: +49 69 631579-0, fax: +49 69 6313641
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Atikon, work: Kornstraße 15, 4060 Leonding, Austria, work: +43 732 611266 0, fax: +43 732 611266 20