MEETING YOUR CHALLENGES

solution-oriented.

Our customer-focused and individually tailored consulting fields within our spheres of expertise in auditing, tax, and legal advisory services combine all important subject areas surrounding your matters.

We synergize expertise.
Within the scope of an audit, varied tasks and complex questions emerge that can present great challenges. The multidisciplinary working…
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In teams that are put together in an individual and multidisciplinary format, we support our clients in all matters surrounding…
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The concept of compliance represents conduct in conformity with the rules on the part of companies and all individuals associated…
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Whether in corporate law disputes, investment procedures, liability questions, or avoiding lawsuits: conflicts always cost in terms of efficiency, a…
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Sonntag & Partner assists companies and groups in all restructuring prompted by corporate law or for tax-optimization purposes, and with…
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We provide counsel and representation for our clients in criminal tax law, in criminal law matters surrounding employment relationships, on…
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For decades at Sonntag & Partner, labor law has been characterized by in-depth consulting and support in all aspects of…
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The multidisciplinary energy and infrastructure team at SONNTAG has been supporting private and public clients in the successful implementation of…
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The legal field of data protection includes a variety of specialty fields and requires the close cooperation of specialist attorneys…
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Geothermal competence We are the [SONNTAG] geothermal team and are advancing the electricity and heat turnaround. Since 2004, our team…
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On the backdrop of intensified and also complex international trade relationships, we advise our clients in drafting and negotiating international…
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Registered marks, designations, and names are essential asset components of a company. Directly connected with protecting names, marks, and trademarks…
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Individual and multidisciplinary teams support our clients in all phases of corporate transactions, be it the acquisition or sale of…
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We advise and support managers and governing bodies with structured contract drafting in line with their interests, particularly with respect…
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In a very dynamic world, private equity and venture capital have become a key instrument for companies and investors in…
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Experienced specialist attorneys from all relevant disciplines support our clients in a closely cooperating team in all legal matters surrounding…
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Sonntag & Partner has already assisted clients for decades with extensive expertise in all legal and tax matters involving real…
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There is a lot of excitement around startups. This is due to their nature because new beginnings are of course…
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Our clients with professional discretion in all matters surrounding asset and company succession. Individually assembled expert teams support you in…
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The Whistleblower Protection Act has been passed - There is an urgent need for action!
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Wir verzahnen wirtschaftliche, steuerliche und rechtliche Aspekte und beraten fachübergreifend und auf Augenhöhe.

Wir begleiten große Familienvermögen, um langfristige Werte über Generationen zu bewahren.

Wir bieten maßgeschneiderte, praktikable Lösungen zu IT-Compliance, Digitalisierung und IT-Projektmanagement.

Wir beraten, bewerten und prüfen – national, aber auch international als unabhängiger MOORE-Netzwerkpartner.

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