By your side — proactive and competent
We offer comprehensive advice on all issues of German and international tax law. Working together as tax consultants and attorneys, we provide personal consultation and are available at any time.
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Compliance | Disputes | Due Diligence
We support corporations, family offices, funds, startups, and individuals in their projects across the globe and in investments across all asset classes. For transactions involving real estate, M&A, and alternative investments, we provide support through focused and efficient due diligence.We handle compliance and tax filings with streamlined processes. Should disputes with authorities arise, we stand by your side throughout the entire process—from tax audits and administrative appeals to litigation.
Siemen Conrady is a true partnership. As your strategic partner, we combine Compliance, Disputes, and Due Diligence services for corporations, family offices, funds, startups, and individuals.
Our Clients
We advise companies, family offices, funds, startups and individuals.
Our Expertise
With many years of experience at major law firms, we provide confident and reliable advice — even in complex matters. We support you in your projects around the globe and in investments across all asset classes. We also represent your interests before the German tax authorities.
Our Philosophy
We are a true partnership and have the subject-matter depth to develop pragmatic solutions. Our aim is to establish robust structures and maintain constructive communication with the tax authorities
International and German tax advisory services for complex structures and transactions. Precise. Efficient. Assertive — from compliance to tax disputes to due diligence.
Ihre Ansprechpartner
Als Tax Boutique mit Sitz in München unterstützen wir Sie bei Ihren steuerlichen Anliegen.
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.
