Criminal tax law. Commercial criminal law.
Compliance.

In the interests of people. In your interests.

Clear. Strategic.

Loyal at all times.

We advise people who are in trouble –
we represent them in criminal proceedings in tax and commercial law, but also in general criminal matters, both nationally and internationally. Wallasch & Gärtner are focused on legal expertise, forward thinking and consistent representation of your interests.

Whether you are an individual, an entrepreneur or a manager: when you are under pressure, we are at your side. Because your rights deserve our full commitment.

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Lawyer + Specialist Lawyer for Criminal Law + Certified Consultant for Criminal Tax Law (DAA)

Oliver Wallasch

I have been working consistently as a defence lawyer in criminal cases since the beginning of my legal career in 1997.

This focus is complemented by in-depth expertise in tax and commercial criminal law as a specialist lawyer for criminal law and certified advisor for criminal tax law (DAA). I represent clients nationwide and internationally – in particular in complex, cross-border proceedings and in extradition law. My approach in every case: wise and competent legal arguments and reliable action exclusively in the interests of my client.

Between 2018 and 2025, I was repeatedly recognised by FOCUS magazine as one of Germany's leading criminal defence lawyers (Top Lawyer).

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Studies

Rheinische Friedrich-Wilhelms-Universität Bonn + Johann-Wolfgang-Goethe-Universität Frankfurt a. M.

Additional qualifications

Specialist lawyer for criminal law + Certified consultant for criminal tax law (DAA)

Main areas of practice

Commercial criminal law, criminal tax law, general criminal law

Passion

Advisory Board Member Fair Trials NGO

Lawyer + Specialist Lawyer for Criminal Law

Sarah Gärtner

As a specialist lawyer for criminal law, I represent clients throughout Germany in preliminary investigations and in main proceedings at local and regional courts.

In close consultation with my clients, I develop a legally and tactically professional defence strategy tailored to their individual interests at every stage of the proceedings.

My main areas of practice are general criminal law, commercial criminal law and juvenile criminal law, with a particular focus on the educational principles enshrined in law.

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Studies

Johann Wolfgang Goethe University Frankfurt (graduated with distinction)

Additional qualifications

Specialist lawyer for criminal law

Main areas of practice

General criminal law + commercial criminal law + juvenile criminal law

Passion

Chair of the board of the Papageno Musiktheater e.V.

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