Compliance & Filings
Our tax practice provides comprehensive tax compliance services that are made especially efficient and precise through consistent digitalization.
We prepare tax returns and annual financial statements for companies, family offices, funds, startups and private clients — always with a clear focus on identifying and mitigating risks. Streamlined processes allow us to capture and calculate income quickly and accurately.
With our strong expertise in international tax law and transactional matters, we are also well equipped to address complex issues, working seamlessly alongside your local advisors or transaction specialists. We are deeply familiar with the typical structures of companies, funds, and family offices, including the compliance challenges that arise from acquisitions, post‑merger integrations, and cross‑border matters.
We advise private clients across all asset classes and jurisdictions. Whether your portfolio includes real estate, securities, gold, or cryptocurrencies, we are your trusted point of contact. We are equally experienced with commonly used succession‑planning structures — such as family foundations or trusts. This is particularly valuable if your life and interests span multiple countries, as we bring the necessary international tax expertise.
Frequently Asked Questions
Our initial consultation is always free of charge. During this meeting, we will assess your situation and discuss whether and how we can support you moving forward.
We charge a flat fee for these services, which is based on the size and complexity of your business or assets. This ensures that your costs are transparent and clearly defined. We invoice this flat fee on a monthly basis.
Any additional consulting services are billed at an agreed hourly rate. Before we begin any work, you will receive a cost estimate that requires your approval. This ensures that you are never "surprised" by an invoice.
We would be happy to help. We have a network of consultants for international matters. If you wish, we can handle the coordination, allowing you to keep us as your sole point of contact for all your international activities.
We have a network of specialized colleagues who can support you with any issue – from business valuation experts to attorneys across all practice areas.
Your contacts for Compliance & Declarations
Please reach out in case you have any questions.
Marius Siemen
Marius Siemen advises on all aspects of German and international tax law. His work focuses in particular on the global investments of institutional investors and private clients across all asset classes. He has extensive experience with projects involving German investors in the United States as well as in the Asia‑Pacific region. Another key area of his practice is the representation of clients in tax disputes: from tax audits to administrative appeals and litigation, as well as the support of clients in criminal tax proceedings.
Lukas Conrady
Lukas Conrady advises investors, corporations, entrepreneurs, startups, and private clients on matters of national and international taxation. A key focus of his work lies in ongoing tax compliance—particularly the preparation of annual financial statements and tax returns, as well as the support of tax audits, including administrative appeal proceedings. He has in‑depth expertise in M&A, private equity, and real estate transactions, assisting clients with tax due diligence and the tax implementation of subsequent reorganizations. In addition, he advises on the taxation of crypto assets, including the classification and reporting of trading, staking, and lending activities.