What Is a Family Office?

A family office is a dedicated organisation that coordinates the investments, governance, administration and long-term affairs of a wealthy family. A single family office (SFO) serves one family, while a multi-family office (MFO) provides shared infrastructure and services to several unrelated families.

What a family office does, in practice, is bring under common oversight the functions that would otherwise sit with separate advisers: investment strategy and portfolio management, governance and decision rights, succession and continuity planning, tax and legal coordination, risk management, philanthropy, consolidated reporting, and the administration of the wider family enterprise.

The purpose is continuity. A family's capital, values and long-term objectives are managed as a whole rather than split across a rotating set of advisers who each see only part of the picture. That is the defining difference from a traditional wealth manager, whose core service is investment advice on a portfolio rather than stewardship of a family's affairs.

What does a family office do?

The service scope varies considerably between families. In practice, a family office is defined less by a fixed list of functions than by which of those functions the family chooses to bring under common oversight.

• —Investment management and asset allocation across public and private markets
• —Tax compliance and legal coordination, frequently across multiple jurisdictions
• —Estate, succession and continuity planning
• —Family governance — decision-making structures, family meetings and next-generation education
• —Philanthropy and charitable giving coordination
• —Risk management, including cybersecurity and operational due diligence on managers and providers
• —Consolidated reporting across custodians, structures and asset classes
• —Family-enterprise administration, from property oversight to consolidated bill payment

Single family office (SFO)

A single family office is established exclusively for one family, with its own staff and, in full-service models, its own investment team. Decision-making authority sits entirely with the family and the people it appoints.

The advantages are control, privacy and services designed around one family's specific circumstances. The trade-offs are fixed overhead that continues regardless of investment performance, and the operational burden of being an employer, maintaining compliance and managing external providers. Because staffing is typically the largest cost line, the economics of a dedicated office depend heavily on how many functions are held in-house rather than outsourced.

Multi-family office (MFO)

A multi-family office serves several unrelated families from shared infrastructure, spreading investment expertise, operations and back-office cost across a client base. Charging is generally linked to assets under management or to an agreed service scope, rather than to the fixed overhead of running a standalone office.

The advantages are access to institutional-quality investment capability, governance and reporting without building it from scratch. The trade-offs are a less bespoke service than a dedicated office and shared, rather than exclusive, attention from the team.

Single family office vs multi-family office

Industry commentary often cites asset thresholds at which a dedicated office becomes viable. Those thresholds vary widely between sources and should be treated with caution: the private nature of family offices means published figures are estimates rather than verified benchmarks.

The more reliable way to frame the decision is by the drivers behind it. Complexity — operating businesses, concentrated holdings, property across jurisdictions, several branches of a family — pushes towards a dedicated office. A preference for shared cost, ready-built infrastructure and immediate capability pushes towards a multi-family office or an outsourced model. Many families with substantial assets deliberately remain with a multi-family office because the marginal control of a dedicated office does not justify the marginal cost.

Hybrid arrangements are common. A lean single family office may retain investment oversight and family liaison in-house while outsourcing consolidated reporting, custody, tax compliance and specialist manager selection.

What family offices are focused on in 2026

The timeless definition above has not changed. What has changed is where attention is concentrated. Current industry research — UBS's 2026 survey of 307 family offices across more than 30 markets, and J.P. Morgan's 2026 survey of 333 family offices across 30 countries — points consistently to the same cluster of priorities.

• —Portfolio resilience and geopolitical risk, with renewed attention to currency and regional concentration
• —Strategic asset allocation review rather than tactical trading
• —Artificial intelligence, both as an investment theme and inside the office itself
• —Infrastructure and the physical foundations of the technology economy
• —Governance frameworks that keep working as families and structures grow more complex
• —Succession and next-generation preparation
• —Private markets as the natural home for patient capital
• —Operational sophistication — data, reporting, technology and provider oversight

Portfolio resilience and strategic repositioning

UBS's 2026 survey found that 60% of participating family offices planned changes to their strategic asset allocation within the following 12 months, and that 65% expected confidence in the US dollar's reserve status to weaken. UBS also reported geopolitical conflict as a leading perceived risk, with European family offices particularly active in strategic portfolio repositioning.

The useful reading of this is not that long-term investors are becoming short-term. It is that long-term capital is being repositioned selectively rather than traded tactically: families are reassessing regional concentration, currency exposure, asset-class diversification, infrastructure exposure and thematic allocations against a multi-decade horizon.

Global diversification

UBS's 2026 findings point to increased consideration of both regional and currency diversification. North America remains a major allocation region among surveyed offices, with Western Europe, Asia Pacific and Greater China also under consideration. IQ-EQ's 2026 family-office work similarly describes global diversification increasing, and Asia growing in importance within the family-office landscape.

These are survey-wide observations rather than statements about UK family offices specifically, and they should not be read as allocation guidance.

Artificial intelligence: investment theme and operating tool

It is worth separating two distinct questions that are often merged. The first is AI as an investment theme. UBS's 2026 survey found 65% of respondents already invested across the AI value chain, and J.P. Morgan's 2026 report found 65% planning to prioritise AI — while noting that more than half of its respondents had no exposure to the venture and growth markets where much AI innovation occurs.

The second question is AI inside the family office. Here the relevance is operational rather than allocational: manager research, consolidated reporting, data consolidation across custodians, investment due diligence, cybersecurity monitoring and routine operational workflows. Adoption levels for internal use vary widely between offices and are not reliably quantified in the current published surveys, so no figure is claimed here.

Infrastructure

J.P. Morgan's 2026 report found that 79% of respondents reported no infrastructure allocation. Set against the same survey's finding that 65% plan to prioritise AI, this creates a visible tension: power generation, data centres, connectivity and physical infrastructure underpin the AI ecosystem that offices say they want exposure to, yet direct infrastructure exposure remains uncommon among respondents.

That observation is descriptive. Whether infrastructure belongs in any particular portfolio is a matter for the family and its advisers.

Family office governance

Governance is where family offices most clearly differ from conventional wealth management, because the client is not one person but a family that may span several generations with different priorities and time horizons.

UBS's 2026 survey found 60% of respondents operating with investment committees, while fewer than half reported formal board-level governance frameworks. J.P. Morgan's 2026 report likewise identifies investment committees among the most common governance structures, alongside investment policy statements, boards, external portfolio reviews and family-office mission statements or handbooks. No single model is universally correct; what matters is that decision rights are explicit and survive contact with the next generation.

• —Investment committees — oversight of asset allocation, manager selection and risk, often combining family members with independent professionals
• —Family councils or assemblies — structured meetings that separate family relationship matters from investment decision-making
• —Formal investment policy statements — written objectives, constraints and risk parameters
• —Boards and independent advisers — external challenge and continuity beyond the principal
• —Delegated authority and decision rights — who may commit capital, to what size, and on whose approval
• —Mission, values and constitution documents — shared statements of purpose and dispute resolution
• —Risk oversight — investment, operational, cyber and key-person risk reviewed as one discipline

Why family offices need periodic review

Current JTC Private Office research makes a practical point that is easy to overlook: structures can become outdated as families, jurisdictions and assets grow more complex. An operating model designed for one principal and a domestic portfolio may become inefficient, or simply unclear, once several branches, additional jurisdictions and a wider asset mix are involved.

Periodic review typically examines governance and decision rights, delegation, technology and reporting, adviser and service-provider concentration, risk, succession and compliance — reassessing roles and responsibilities rather than assuming the original design still fits.

Succession planning

Succession is where 2026 research is most pointed, and where the numbers must be read carefully. UBS's 2026 survey found that only 35% of participating family offices had a defined succession plan for the family office itself. J.P. Morgan's 2026 report found that 86% of its respondents lacked a clear succession plan for key decision-makers.

These figures measure differently defined issues across different samples and should not be merged into a single statistic. Read together, however, they point to the same conclusion: there is a material gap between the institutional quality of family offices' investment processes and the formality of their continuity planning.

Planning generally addresses ownership transfer of investment structures, operating businesses and property; leadership transition, so that successors are prepared to hold governance and investment responsibility; cross-border considerations where a family is internationally spread; and — the element practitioners most often describe as decisive — open communication about wealth and expectations well ahead of any transition. JTC's 2026 Private Office work treats succession as integral to long-term continuity rather than as a discrete legal exercise.

Preparing the next generation

UBS's 2026 survey found that only 27% of participating family offices had a structured process for educating and preparing heirs for future roles, and that 29% cited insufficient financial and governance education as a challenge to next-generation involvement.

Approaches families use vary widely, and none of the following is presented as a required practice:

• —Participation in the investment committee, initially in an observing capacity
• —Structured financial and governance education
• —External professional experience before taking an internal role
• —Philanthropy as a first area of delegated responsibility
• —Involvement in the family operating business
• —Defined governance roles with explicit remits

Family offices and family businesses

A family office and a family operating business are not the same thing, although a family may own both. The operating business trades; the family office coordinates the family's wealth, governance and long-term affairs, typically including capital held outside the operating company.

J.P. Morgan's 2026 report found that 41% of business-owning families identified internal conflict as a top-three risk, and that governance becomes more important as family enterprises grow more complex. Where both exist, the family office often supports governance, liquidity planning, portfolio diversification away from a concentrated operating asset, and succession across both the business and the wider estate.

How family offices invest

Family office portfolios have broadened over the past decade, moving from a heavy reliance on public markets towards a more institutional approach that makes significant use of private markets and real assets. IQ-EQ's 2026 work describes private equity, venture and real assets as continuing core strategic areas, alongside rising institutional sophistication in governance, tooling and investment capability. Allocations frequently include:

• —Private equity — fund commitments alongside co-investment with sponsors
• —Venture capital — particularly among families with an entrepreneurial or technology background
• —Private credit — direct lending and specialty finance as an alternative to public fixed income
• —Real estate, real assets and natural capital — including forestry and farmland
• —Infrastructure — long-duration, inflation-linked characteristics, though still a minority allocation among J.P. Morgan's 2026 respondents
• —Direct investment — stakes taken in private companies without an intermediary fund, often where the family has sector expertise or a relevant network
• —Secondaries — used as a portfolio management tool where exit markets are slow

The structural reasons family offices are drawn to private markets are consistent: genuinely long time horizons, the ability to tolerate illiquidity, entrepreneurial experience of building and selling companies, direct-investment networks, and a preference for control and alignment. J.P. Morgan's 2026 report also found that respondents concerned about inflation allocated materially more to alternatives. None of this means all family offices prefer private markets, and nothing here is a recommendation to allocate to any asset class.

Why some family offices use private fund structures

Current JTC 2026 Private Office research notes the growing relevance of private-fund structures to family-office governance, investment and succession. Where used, such structures can help organise pooled family capital, define governance and decision rights, separate distinct strategies, simplify reporting, involve different generations on defined terms, support succession, and manage who participates in which investments.

Suitability depends entirely on jurisdiction, tax position, regulatory perimeter and family circumstances. Nothing here is legal, tax or structuring advice.

Digital assets

Digital assets attract attention out of proportion to reported allocations. UBS's 2026 survey found 24% of participating family offices invested in crypto or digital assets, generally at modest levels. J.P. Morgan's 2026 report found 89% of its respondents had no cryptocurrency exposure, and 72% no gold exposure.

The two studies use different samples, definitions and methodologies, so neither figure describes family offices universally. The consistent editorial takeaway is narrower: digital assets remain a minority allocation compared with AI, private markets and broader portfolio-resilience themes.

How to set up a family office in the UK

Establishing a family office is an organisational and governance decision as much as a legal one. Broadly, families and their advisers work through the following considerations. None of the options below is presented as suitable for any particular family — the appropriate route depends entirely on individual circumstances and professional advice.

• —Legal and operating structure — a range of vehicles is used in practice, and the choice is a matter for legal and tax advice rather than a default
• —Regulatory position — whether any activity carried on requires authorisation by the Financial Conduct Authority depends on the specific activities undertaken, who they are performed for and how the arrangement is structured; this must be assessed case by case
• —Service scope — deciding which functions are held in-house and which are delegated to advisers, managers or a multi-family office platform
• —Core team — even lean offices typically cover investment oversight, finance and operations, and family liaison before scaling further
• —Tax and cross-border structuring — for internationally mobile families, residence and cross-border questions are usually addressed at the outset with specialist advice
• —Governance — a family constitution, an investment committee and clear decision rights that will still function as the family grows
• —Reporting and technology — consolidated reporting across asset classes, custodians and jurisdictions is one of the most common early operational pain points

Philanthropy

Structured philanthropy forms part of many family offices' remit, moving beyond ad hoc giving towards defined approaches such as charitable foundations, donor-advised funds and blended finance models that combine charitable and commercial capital. For many families philanthropy also serves a governance purpose, giving the next generation a shared, values-led responsibility before they take on full investment authority.

From research to discussion

These issues also feature across UKFOS discussions covering investment, governance, succession, technology and long-term stewardship, where family office principals, institutional investors and specialist advisers examine them in practice rather than in the abstract.

Common questions

Sources & further reading

Research referenced in this guide. Figures are reported with the sample each study measured; surveys define questions differently and are not directly comparable.

• —UBS Global Family Office Report 2026 — Survey of 307 family offices across more than 30 markets, average family net worth USD 2.7bn and average family-office assets managed USD 1.3bn.
• —J.P. Morgan 2026 Global Family Office Report — Survey of 333 family offices across 30 countries.
• —IQ-EQ family office research and insights (2026) — Qualitative themes on private markets, institutionalisation, governance and global diversification.
• —JTC Private Office insights (2026) — Qualitative themes on periodic governance review, private-fund structures and succession continuity.

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Related family office resources

• Family Office Guide — all guides
• UKFOS 2026 Programme
• Summit Speakers
• News & Insights