A family office manages the global wealth of one or more affluent families. Definition, differences between SFO/MFO/Virtual FO, entry thresholds, and services covered.
family office · wealth management · single family office · multi-family office · estate planning · private management · Updated June 2026
A family office is a private wealth management structure dedicated to wealthy families, offering integrated services ranging from investment to estate planning. There are two main forms: the single family office (SFO), reserved for a single family, and the multi-family office (MFO), shared among several clients. The entry threshold for an SFO is generally set at a minimum of 100 million euros in assets, while an MFO remains accessible from 5 to 10 million euros. These structures constitute a distinct segment of wealth management, separate from traditional private banking.
Family Office
Summary
- What exactly is a family office?
- What are the different types of family offices?
- How many family offices are there in the world and in France?
- What services does a family office provide?
- From what wealth level should one create a family office?
- What is the difference between a family office and a private concierge service?
What exactly is a family office?
A family office is an organizational structure — legally constituted in various forms (management company, holding company, association, etc.) — whose exclusive mission is to ensure the global, coordinated, and sustainable management of the assets of a wealthy family or a restricted group of families. It is not a simple financial asset manager, but an integrated system that encompasses all dimensions of wealth: financial and real investments, estate planning and intergenerational transfer, tax optimization, philanthropy, family governance, and coordination of all external service providers (lawyers, notaries, accountants, custodian banks).
The concept has its historical roots in the 19th century in the United States, when industrial families — foremost among them the Rockefellers, whose family office founded in 1882 is generally cited as the first of its kind — created entities dedicated to managing their colossal fortunes from the industrial era. In Europe, comparable structures emerged around large banking and merchant dynasties, particularly in Switzerland, Germany, and the United Kingdom.
The contemporary definition of a family office is based on three fundamental characteristics. First, exclusivity: the family office works for one family or a very limited number of families, unlike a private bank or wealth manager who serves thousands of clients. Second, comprehensiveness: the support is holistic and goes beyond mere asset allocation to encompass the entire wealth life. Third, intergenerational continuity: the time horizon is that of the family over several generations, not that of a short-term management mandate.
What are the different types of family offices?
Academic and professional literature classically distinguishes four models of family offices, which differ in their ownership structure, the number of families served, the required wealth threshold, and the degree of internalization of skills.
The Single Family Office (SFO) is the purest and oldest form. It is created, financed, and controlled by a single family, which is its sole beneficiary. The teams — typically composed of 5 to 30 professionals depending on the complexity of the assets — are dedicated employees. This model guarantees maximum confidentiality, absolute personalization, and perfect alignment of interests. It is economically justified from approximately 100 to 150 million euros in assets under management, below which the fixed structural costs (payroll, information systems, regulatory compliance) become disproportionate.
The Multi-Family Office (MFO) pools resources and costs among several client families, generally from 5 to 50. It can be independent — founded by former private banking or asset management professionals — or backed by a financial institution. The access threshold is significantly lower, around 10 to 30 million euros, making it accessible to a wider clientele. The trade-off is less exclusivity and potential conflicts of interest to be managed carefully.
The Virtual Family Office (VFO) is an emerging model, accelerated by the digitalization of financial services. It relies on outsourcing all functions to a network of specialized service providers coordinated by a wealth project manager (often an independent family officer or a family CFO). This model suits assets of 5 to 30 million euros wishing to benefit from a coordinated approach without incurring the costs of a permanent structure.
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Request a free quoteThe Embedded Family Office (or integrated family office) refers to an offering proposed by a private bank, an asset management company, or a consulting firm that reserves a dedicated service for its most important clients, replicating the attributes of a family office within its organization. This model has the advantage of relying on existing infrastructures but raises legitimate questions of independence and conflicts of interest inherent in the commercial relationship.
| Type | Minimum Wealth | Estimated Annual Cost | Number of Client Families | Key Services | Main Advantages | Limitations |
|---|---|---|---|---|---|---|
| SFO Single Family Office |
≥ €100–150M | €1 to €3M/year (0.5–1.5% AUM) |
1 family | Asset management, succession, taxation, philanthropy, governance, consolidated reporting, service provider coordination | Maximum confidentiality, total personalization, perfect alignment of interests, complete family control | High fixed costs, HR complexity, risk of dependence on key individuals |
| MFO Multi-Family Office |
€10–30M | 0.5–1.5% AUM | 5 to 50 families | Asset management, estate planning, tax optimization, reporting, access to pooled alternative investments | Cost sharing, access to diversified expertise, economies of scale on investments | Less exclusivity, risks of conflicts of interest, limited personalization |
| VFO Virtual Family Office |
€5–15M | Variable depending on providers (0.3–1% AUM) | 1 family (outsourced network) | Provider coordination, consolidated reporting, strategic advice, on-demand access to specialists | Maximum flexibility, low fixed costs, access to leading experts | Complex coordination, risk of fragmentation, dependence on external providers |
| EFO Embedded Family Office |
€20–50M (depending on institution) | Included in banking or management fees | Several tens to hundreds | Asset management, tax and estate advice, access to bank products, reporting | Existing infrastructure, institutional solidity, integrated offering | Structural conflicts of interest, less independence, personalization limited by institutional constraints |
How many family offices are there in the world and in France?
The precise census of family offices faces a structural difficulty: these entities are, by nature, discreet and are not required to make public declarations in most jurisdictions. Available estimates are based on industry surveys and specialized databases.
Globally, the number of family offices is estimated between 7,000 and 10,000 according to sources, with a strong concentration in North America (approximately 3,000 to 4,000), Europe (2,000 to 3,000), and Asia-Pacific (1,500 to 2,500, with strong growth). The annual UBS Global Family Office Report and studies by Campden Wealth are the most cited references in professional literature. Preqin estimates that family offices collectively manage between 5,500 and 6,000 billion dollars in assets worldwide, making them a systemic player in private capital markets.
In France, the French Family Office Association (AFFO) identifies approximately 400 to 500 structures meeting the criteria of a family office, the majority of which are independent multi-family offices. Paris concentrates approximately 150 to 200 of these entities, positioning the French capital as the third European family office hub behind London and Zurich. Geneva, despite its size, hosts approximately 150 to 200 family offices, benefiting from the Swiss banking tradition of discretion and favorable taxation for international wealth structures.
The sector's growth is estimated at +10 to +15% per year in terms of the number of structures, driven by three converging factors: the increasing number of global high-net-worth individuals (the Wealth-X report notes a continuous increase in assets over 30 million dollars), regulatory and tax complexity that necessitates professional management, and the intergenerational transfer of fortunes built during the post-war decades of economic growth.
What services does a family office provide?
The service offering of a family office is structured around six complementary areas of expertise, the articulation of which precisely constitutes the added value of this model compared to a fragmented approach using uncoordinated independent service providers.
1. Asset management and allocation. This is the historical core of the activity. The family office defines an investment policy adapted to the family's objectives, time horizon, and risk tolerance. It allocates assets among asset classes (listed equities, bonds, real estate, private equity, hedge funds, real assets, cash) and selects external managers or directly manages certain pockets. Access to alternative investments — private equity co-investments, private debt, infrastructure — constitutes a major competitive advantage for large family offices.
2. Estate planning and transfer. The legal structuring of assets for their transfer to future generations is a central mission. This includes drafting and updating wills, creating holding structures (family holdings, trusts, foundations), implementing Dutreil pacts in France, and coordinating with specialized notaries and lawyers.
3. Tax optimization. The family office ensures permanent tax monitoring and coordinates the family's overall tax strategy in all relevant jurisdictions. It does not replace specialized tax advisors but ensures overall consistency and implementation of recommendations.
4. Philanthropy and impact. Wealthy families dedicate a growing portion of their assets to philanthropic activities. The family office structures these commitments: creation of recognized public utility foundations, endowment funds, impact investments, definition of a family philanthropic strategy consistent with the family's values.
5. Family governance. Beyond financial assets, the family office supports the family in structuring its internal governance: drafting family charters, organizing family councils, preparing new generation members for wealth management, mediation in case of intra-family conflicts. This dimension, long neglected, is now recognized as crucial for the intergenerational sustainability of fortunes.
6. Consolidated reporting and coordination of service providers. The family office produces global wealth reporting, consolidating all assets held with multiple custodian banks, managers, and legal structures. It also acts as an orchestra conductor for all external service providers, ensuring the consistency of interventions and avoiding redundancies or contradictions.
From what wealth level should one create a family office?
The question of the wealth threshold justifying the creation of a family office is fundamentally a cost-benefit analysis. The costs of a family office are essentially fixed costs: payroll (the largest item, representing 50 to 70% of total expenses), information and reporting systems, regulatory compliance, premises, and general expenses. These costs are estimated between 0.5% and 1.5% of assets under management per year for an SFO, or between 500,000 euros and 1.5 million euros for assets of 100 million euros.
Professional consensus establishes the economic viability threshold for a Single Family Office at approximately 100 million euros of managed assets. Below this threshold, structural costs represent too large a fraction of the assets to be economically rational, and recourse to a Multi-Family Office or a Virtual Family Office is generally preferable.
For a Multi-Family Office, the access threshold is significantly lower, around 10 to 30 million euros, which corresponds to the segment known as "high net worth individuals" (HNWI) as opposed to "ultra high net worth individuals" (UHNWI, over 30 million dollars according to Wealth-X classification).
It should be noted that the wealth threshold is not the only relevant criterion. The complexity of the assets (presence of a family business, assets in several countries, blended family, numerous heirs), the level of involvement desired by the family in management, and family governance issues are equally decisive factors in the decision to create or join a family office.
What is the difference between a family office and a private concierge service?
The confusion between family office and private concierge service is common among the general public, and sometimes maintained by commercial actors who use one or the other term interchangeably for marketing purposes. However, these two types of services address fundamentally distinct needs, even if they often target the same clientele.
The family office is a service of a wealth and financial nature. Its purpose is the preservation, growth, and transmission of family capital. Its natural interlocutors are financial directors, tax lawyers, notaries, and asset managers. Its deliverables are asset allocations, legal structures, financial reports, and succession plans. Its time horizon is that of the family over several generations.
The private concierge service is a service of a lifestyle and logistical nature. Its purpose is to facilitate the daily life and leisure of its clients: booking exceptional trips, access to exclusive events, property management, organizing private events, personal services. Its time horizon is immediate or short-term.
The distinction is therefore clear in its principles: the family office manages capital, the private concierge service manages daily life. These two services are complementary and not substitutable. The wealthiest families often use both simultaneously, and some large family offices integrate a concierge dimension into their service offering — particularly for the management of enjoyment assets (yachts, planes, secondary residences) — without this dimension constituting their core business.
It is notable that some service providers positioned in the luxury segment use the term "family office" to designate services that actually fall under high-end concierge services. This terminological confusion, detrimental to market clarity, is regularly denounced by professional associations in the sector, particularly the AFFO in France and the EFFO (European Family Office Forum) at the European level.
- UBS / Campden Wealth, Global Family Office Report, annual editions 2020–2024.
- Association Française du Family Office (AFFO), Directory and Sectoral Studies, Paris.
- Campden Wealth, The European Family Office Report, 2023.
- Preqin, Family Offices as Alternative Asset Investors, 2023.
- Wealth-X, World Ultra Wealth Report, editions 2022–2024.
- Amit, R., Liechtenstein, H., Prats, M.J., Single Family Offices: Private Wealth Management in the Family Context, IESE Business School, 2008.
- Rosplock, K., The Complete Family Office Handbook, Wiley Finance, 2014.
- Autorité des marchés financiers (AMF), Regulatory framework applicable to family offices in France.
Methodological note: Figures relating to the number of family offices and assets under management are estimates derived from sectoral surveys, as the confidential nature of these structures makes any exhaustive census impossible. The ranges indicated reflect the consensus of the most cited professional sources at the time of writing.
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Alexandre Emmelin
Founder, AC Private
Alsatian entrepreneur, Alexandre founded AC Private with one conviction: true luxury is reclaimed time. He personally leads the most sensitive missions and writes a monthly editorial sharing his vision of exceptional concierge service.
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