Our interdisciplinary team brings decades of cross-border expertise to every mandate — handling the full complexity of international family office needs with discretion and precision.
"We operate with no conflicts of interest — fully independent, family-owned, and bank-independent since 2002."
Founded in 2002 by Marcus Hartmann, Primax Group AG is a fully independent, family-owned family office based in Zollikon, Switzerland. We serve wealthy families and entrepreneurs with comprehensive advisory across legal, financial, and strategic domains.
We hold no product-linked incentives and maintain no ties to banks — our only commitment is to you and your interests across generations.
"We work across disciplines and borders — connecting the right expertise to every mandate, with no agenda other than yours."
Every mandate at Primax is handled with a long-term perspective. We coordinate across legal, tax, financial, and operational domains — assembling the right team of specialists for each client situation, wherever in the world that may be.
Our experience spans Europe and Asia, and our global network ensures that no structure, jurisdiction, or challenge is beyond our reach.
A full suite of family office services — from investment management to estate planning — delivered with expertise and discretion.
Strategic planning and management of your capital investments.
Legal advice, financing, and tax optimisation for property transactions worldwide.
Coordinating all family matters with discretion and foresight.
Complex legal and tax structures across jurisdictions — tailored to you.
Securing your wealth for future generations with long-term perspective.
Advance directives, inheritance agreements, and wills — coordinated worldwide.
Establishing residency in Switzerland — from authorities to full setup.
Structuring, acquisition, and maintenance of high-value assets.
Strategic business decisions — from analysis through to implementation.
Structuring, incorporation, and administration of companies worldwide.
Sustainable growth through strategy, operations, and a strong partner network.
All financial matters — transparently, efficiently, and across borders.
Primax is led by experienced professionals with deep expertise in international law, tax, and cross-border advisory — combining decades of entrepreneurial and fiduciary experience.
Marcus Hartmann co-founded GT Family Office in 1993 and built it into an internationally recognised institution. A serial entrepreneur and committed fiduciary, he has accompanied countless families and established companies across the globe over more than 30 years.
He is an expert in international tax and corporate law, with particular focus on double taxation treaties and cross-border structuring. His extensive global network and profound understanding of international regulatory frameworks make him a trusted advisor for complex international matters.
We are fully bank-independent and family-owned. We hold no product-linked incentives — our mandate is solely your interests.
Our global network spans Europe and Asia. We bring Swiss standards of discretion and quality to every mandate, worldwide.
We coordinate legal, tax, financial, and operational specialists — assembling the right team for every client situation.