A family office is a private organization established to manage the financial and personal affairs of an ultra-high-net-worth family — typically those with $100 million or more in investable assets. Single-family offices serve one family exclusively; multi-family offices pool resources to serve several families. Services go well beyond investment management and may include tax planning, estate planning, philanthropic strategy, concierge services, family governance, and next-generation financial education. Family offices provide a level of personalization and integration that traditional wealth management firms can't match.