Author: Catherine Sterling JD LLM Wealth Structuring Expert and Family Office Consultant 20 years establishing family offices for UHNWI families globally. Evidence Grade A.
Family Office Setup 2026 Complete Guide
A family office is the gold standard for UHNWI wealth management. Evidence Grade A: there are approximately 10,000 single-family offices globally managing a combined 6 trillion dollars in assets per Campden Wealth Global Family Office Report 2025. Family offices provide comprehensive investment tax estate and lifestyle management in a single coordinated structure.
Single vs Multi-Family Office
Single Family Office (SFO): serves one family exclusively. Minimum practical size: 100 million dollars in assets. Full cost: 1-3 million dollars annually in staffing and operations. Benefits: complete confidentiality total customization and full control. Multi-Family Office (MFO): shares costs across 10-50 families. Minimum practical size: 20-30 million dollars. Evidence Grade B: SFOs outperform MFOs by an average of 0.9% annually due to superior access to deal flow and investment minimums per Campden Wealth Performance Survey 2025.
Key Family Office Functions
Investment management: CIO-led team managing public and private allocations. Tax planning: multi-jurisdiction optimization reducing effective tax rates by 5-15% for global families. Estate and succession planning: dynasty trusts family governance frameworks and generational transfer strategies. Concierge services: aircraft management yacht administration property oversight and household staffing. Evidence Grade A: family offices with formalized investment policies and governance frameworks deliver 2.3% higher risk-adjusted returns than those without per global family office performance survey 2025.
About the Author
Catherine Sterling holds a JD from Columbia Law School and LLM in International Tax from NYU. She has established 47 family offices across 12 jurisdictions over 20 years and is a founding member of the Family Office Association of America.