Single Family Office vs Multi-Family Office

A single family office serves one family exclusively; a multi-family office shares its infrastructure and expertise across several families to lower cost.

Key takeaways

SFOs maximise control and privacy at high fixed cost.

MFOs share infrastructure, lowering cost and widening expertise, at some loss of bespoke control.

Scale is the deciding variable: fixed costs only make sense above a certain asset level.

Many families begin with an MFO and graduate to an SFO as complexity grows.

Control and privacy

An SFO answers only to one family. Every mandate, hire and system is bespoke, and nothing leaves the building. An MFO necessarily standardises: shared staff, shared platforms, shared processes. For families whose priority is absolute control and discretion, the SFO wins; for most others, the marginal privacy is not worth the cost.

Cost

This is where the decision is usually made. An SFO's costs are largely fixed and must be borne whether the family had a good year or not. An MFO turns those into a fee that scales with what you use. Below a substantial asset base, the SFO's fixed cost is simply a tax on returns.

Expertise and continuity

A small SFO can struggle to attract and retain deep expertise across every discipline it needs. An MFO spreads specialists across many clients, giving a smaller family access it could not justify alone, and continuity that does not depend on one or two key people.

How to choose

Start from complexity and scale, not aspiration. If your affairs genuinely require dedicated, full-time, bespoke management and you have the assets to absorb the fixed cost without eroding return, an SFO is defensible. Otherwise, an MFO is the more rational structure, and a common path is to begin there and build an SFO later if complexity demands it.

Frequently asked questions

What is the difference between a single-family office and a multi-family office?

A single-family office serves one family exclusively, offering maximum control, privacy and customisation at the highest cost. A multi-family office serves several unrelated families on a shared platform, which lowers cost and can raise institutional quality, at the price of less exclusivity and alignment.

Which is cheaper, a single-family office or a multi-family office?

A multi-family office is usually far cheaper, because it spreads the cost of talent, systems and access across many families, typically charging a fee based on assets rather than carrying a full standing team.

When should a family choose a single-family office?

When its wealth and complexity are large enough to justify a dedicated team, and when control, privacy and bespoke service matter more than cost, usually at several hundred million dollars and above.

This guide is educational and general in nature. It does not constitute investment, legal, tax or financial advice.