Single-Family Office (SFO)

A single-family office (SFO) is a private organisation dedicated exclusively to managing the financial, administrative, and personal affairs of one ultra-high-net-worth family. Unlike shared advisory arrangements, an SFO operates solely on behalf of one family, providing complete confidentiality, customisation, and control over all aspects of wealth management.

Families typically establish a single-family office once investable assets exceed $100 million, though the threshold varies by jurisdiction and complexity of the family's holdings. The decision to create an SFO is usually driven by the need for coordinated oversight across investments, tax planning, estate structures, philanthropy, and lifestyle management — services that become difficult to manage through multiple external advisors.

Core functions of a single-family office

While every SFO is tailored to the specific needs of its family, most provide a combination of the following services:

1. Investment management — portfolio construction, asset allocation, manager selection, co-investments, and direct deals across public and private markets.

2. Tax and estate planning — multi-jurisdictional tax optimisation, trust administration, succession planning, and wealth transfer strategies.

3. Risk management — insurance, cybersecurity, physical security, and reputational risk monitoring.

4. Philanthropy — establishing and managing foundations, donor-advised funds, and impact investment programmes.

5. Family governance — facilitating family meetings, developing governance charters, managing next-generation education, and mediating family dynamics.

6. Lifestyle and concierge services — property management, travel coordination, household staff oversight, and personal administration.

Advantages of the single-family office model

The primary advantage of an SFO is alignment. Because the office serves only one family, there are no competing interests or conflicts. Investment strategies, reporting, and operations can be fully customised to the family's values, risk tolerance, and long-term objectives.

An SFO also offers maximum privacy. Sensitive financial information, family dynamics, and strategic decisions remain within a closed, trusted team — a significant consideration for families with public profiles or complex cross-border structures.

Key considerations

Operating an SFO comes with meaningful costs. Annual running expenses typically range from $1 million to $5 million or more, depending on the scope of services, number of staff, and geographic footprint. Families must weigh these costs against the benefits of full control and customisation.

For families with assets below the SFO threshold, a multi-family office (MFO) can provide many of the same services at a lower cost by sharing infrastructure across multiple families.

Related Terms