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​A wealth of experience

This is the picture of Andreas Mengel, the managing director of ATO

Andreas Mengel 

Managing Director

As attorney-at-law and tax advisor I have served in leadership roles at gloabl audit firm PwC and law firm Hayabusa Asuka in Tokyo.


Leveraging on this experience I am happy to offer unparalleled support to our clients helping them to navigate the challenging regulatory envirnoment in Europe. 


​ATO Steuerberatungsgesellschaft 


2017 - Present 

Munich, Germany



Leader of JBN for southern Germany

Jul 2010 - 2017

Munich, Germany 

Advising clients on tax and legal matters

Advising Multinationals on M&A matters

Representing clients in tax audits

Advising clients on TP matters

Hayabusa Asuka Law Offices


Partner in charge of international clients

Apr 2006 - Jun 2010 

Tokyo, Japan 

Representing clients in real-estate transactions

Representing clients in antitrust matters

Advising clients on labor disputes



2001 - 2006 

Düsseldorf, Germany

Supporting Japanese clients on tax and legal matters


Waseda University 

Graduate School of Law 

2000 - 2001

Tokyo, Japan 

Free State of Bavaria

Trainee attorney-at-law


Waseda University 

Japanese Language Center

1996 - 1997

Tokyo, Japan 

University of Augsburg 

Faculty of Law

1991 - 1996


German     -   Native

Japanese  -    Working level 

English      -    Working Level 

Our Team

The members of our team are handpicked.
Each shares the firm’s focus on our clients.

Experience from various industries as well as various cultural backgrounds allows our advisors to deeply understand the needs of our clients doing business in Europe.

We believe that an outstanding advisor needs to excel not only from a professional angle. General business skills and intercultural know-how are for example as well integrated part of our training.

The quality of the advisors is the very base of every service. That is why we spend a significant amount of time on training. Naturally, our training goes far beyond a mere focus on professional matters.

In the ever-changing environment our clients are confronted with, this ensures that we can retain and strengthen our excellent market position.

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