What Is a Family Office? A Working Definition
A family office is a private organisation that manages the financial, operational, and personal affairs of a wealthy family.
Key takeaways
- —Single-family offices serve one family; multi-family offices serve many.
- —Scope ranges from purely financial to fully integrated lifestyle management.
- —Most offices begin as embedded operations and formalise as wealth grows.
- —The right structure depends on family complexity, not headline AUM.
A family office sits at the intersection of investment management, governance, and operational support for a wealthy family. The boundaries are not standardised. Some offices manage only investments; others coordinate everything from tax filings and bill-pay to property management and family meetings. What unites them is a fiduciary mandate to the family's interests rather than to a fee structure.
The decision to formalise a family office usually arrives between $100M and $500M in assets, but the trigger is rarely AUM alone. Operating-business succession, multi-jurisdictional residency, branch fragmentation, and rising compliance burden each push families toward dedicated structure. Without that structure, the work happens informally — and the gaps surface during the moments families can least afford them.
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