What Is a Family Office?

A family office is an organization set up to manage the financial and personal affairs of one wealthy family, or a small number of them, in a coordinated way. Instead of each relative dealing separately with a bank, an accountant, a lawyer and a charity adviser, one team (or one carefully chosen provider) looks at the whole picture: the operating business, the investments outside it, the tax position, the estate plans and the family's shared goals.

For a business-owning family, the idea usually appears at a specific moment. The company has grown, or been partly sold, and a lot of the family's wealth now sits outside the company. Nobody was hired to look after that wealth, and the founder's own time is going into it by default. This article explains what a family office is from that owning family's point of view: the main models, what each one does, when families create one, how the office should be governed, and where they tend to go wrong.

It's general reference material, not legal, tax or investment advice. Family office rules, tax treatment and regulation vary a great deal by country, so any real decision needs advisers in the jurisdictions involved.

A Working Definition

There's no single worldwide legal definition. In practice, "family office" describes a function more than a legal form. It's the set of people, processes and structures that handle a family's wealth on the family's behalf and in its interest.

Regulators do define the term for their own purposes. In the United States, the SEC's family office rule, 17 CFR 275.202(a)(11)(G)-1, uses the term to decide which wealth-management companies are exempt from investment adviser regulation. Under it, a family office is a company that:

• has no clients other than "family clients" (with limited exceptions, such as a one-year grace period after a death or a key employee's departure);
• is wholly owned by family clients and exclusively controlled by one or more family members and/or family entities; and
• doesn't hold itself out to the public as an investment adviser.

The rule's own definition of "family member" covers lineal descendants of a common ancestor (up to 10 generations removed) and their spouses or spousal equivalents. That's a regulatory definition for one country, so it's a useful reference point rather than a universal test. Other countries draw the lines differently, and some don't regulate the structure at all.

The practical takeaway is that a family office exists to serve the family. It isn't a product you buy off a shelf and it isn't a status symbol. It's an answer to a coordination problem.

Three Common Models

Most family offices fall into one of three shapes, and the differences matter more than the label.

Single-family office

A single-family office (SFO) serves one family. The family owns it, usually through a company or trust, and pays for it out of the family's own assets. It employs its own staff, typically a mix of investment, accounting, tax and administrative people, plus whatever outside specialists it brings in. Because it works for one client, it can be shaped around that family's values, risk appetite and politics.

The trade-off is cost and scale. A dedicated team needs enough wealth and enough complexity to justify it. For families whose wealth is modest relative to the overhead, an SFO can consume a meaningful share of the returns it's supposed to protect.

Multi-family office

A multi-family office (MFO) serves several families, usually through a commercial firm. The families share the cost of the staff, systems and expertise, and get access to specialists they couldn't hire alone. The trade-off is less customization and a provider with its own business interests. The firms that sell these services are the subject of the companion article on family office services, which is written from the provider's side. This article is written from the family's.

An MFO also differs from a single-family office in a legal sense. In the US, for example, an office that serves several unrelated families generally falls outside the family office exemption described above, so it's typically regulated as an investment adviser.

Embedded family office

Many business-owning families don't create a separate office at all. Instead, the family company's finance team quietly handles personal matters for the owners: paying family bills, tracking the family's investments, arranging insurance, preparing tax filings. This is an embedded family office, and it's very common because it starts as a favor and grows.

It's cheap and convenient. It also blurs lines that governance depends on. When the company's CFO spends part of the week on a relative's affairs, the company is paying for private benefits, and non-family managers and minority owners can reasonably ask why. Families usually move toward a cleaner separation as the business grows and the number of owners increases.

What a Family Office Does

The scope varies from a part-time accountant to a full team, but the work tends to fall into a handful of functions.

Investment management. This covers setting an investment policy, allocating assets, picking managers or running some investments directly, and monitoring performance. For an owning family, a key question is how much of the family's wealth should stay concentrated in the operating company and how much should be diversified outside it.

Accounting and reporting. The office consolidates information across accounts, entities and countries into one view. Many families discover they've never seen their total position in a single report. Consolidated reporting, cash-flow planning and bill payment are unglamorous and often the most valued service.

Tax and estate coordination. The office works with outside tax and legal advisers so that decisions in one area don't undermine another. It tracks filings, coordinates entities and keeps estate documents current. It doesn't replace licensed advisers; it makes sure they talk to each other. The mechanics of moving shares between generations are covered in ownership transfer between generations.

Governance and family education. Good offices support the family's own decision-making: organizing meetings, keeping records, preparing the next generation to be owners and helping to run the family's governance bodies. The family council is the forum where this usually lives, and the family constitution is where the family records its rules.

Philanthropy. Many families give money through a foundation or donor-advised vehicle, and the office handles grant administration, due diligence and reporting. Giving can also be a useful way for younger family members to practice joint decision-making.

Concierge and administrative services. This is the personal side: managing properties, travel, insurance, household staff, security and similar matters. Some families want it and some deliberately leave it out to keep the office focused on wealth.

Not every office does all six, and families should be wary of a scope that grows by default. It's better to choose the functions deliberately and expand when there's a clear need.

Key Facts: Family Offices

• The SEC's family office rule exempts a company from investment adviser regulation only if it serves only family clients, is wholly owned and exclusively controlled by family members or family entities, and doesn't hold itself out as an investment adviser (17 CFR 275.202(a)(11)(G)-1).
• The UBS Global Family Office Report 2025 surveyed 317 single family offices across more than 30 markets between 22 January and 4 April 2025. Participating families averaged USD 2.7 billion in net worth and USD 1.1 billion in assets managed per office (UBS).
• In that survey, 53% of family offices had a wealth succession plan in place; among those with a plan, 64% named tax-efficient wealth transfer as the greatest succession challenge, and 43% named preparing the next generation to take on wealth responsibly (same source).
• Only 26% of the surveyed offices consulted the next generation about succession plans from the outset (same source).
• The UBS respondents are very large families, so the figures describe the top end of the market, not a typical business-owning family.

When Families Set One Up

There's no wealth threshold that applies to everyone, and the UBS sample is a reminder of how large the typical surveyed office is. The UBS families averaged USD 2.7 billion in net worth, which is far above the point at which most business owners start thinking about this. Families with far less may still create something smaller, such as an embedded team or an outsourced arrangement, and that's a legitimate choice.

The triggers are fairly consistent:

• A liquidity event. The family sells all or part of the company, or receives a large dividend or recapitalization. Suddenly there's a pool of financial wealth that needs managing and nobody employed to do it. The decision options are covered in exit options for business owners.
• Wealth outside the business grows. Even without a sale, years of dividends, real estate and side investments can add up to a second portfolio next to the operating company.
• Complexity increases. More family members, more countries, more entities, more tax filings. The founder's own spreadsheet stops being enough.
• A generational change. Moving from one generation to the next brings more owners, and some of them don't work in the business. They still need information, reporting and a voice.
• A governance gap. The family realizes that no one is responsible for the shared decisions, from the investment policy to philanthropy.

If none of these applies, the most honest answer may be that a family office isn't needed yet. A good outside accountant, an estate lawyer and a clear shareholding policy can do a lot.

How the Office Relates to the Business and the Family

The cleanest way to think about a family office is through the three-circle model of family business. The operating company sits in the business circle. The family office sits mostly in the ownership and family circles: it manages the owners' wealth, not the company's operations.

That distinction should be written down. A few relationships are worth specifying:

Office and operating company. The office shouldn't run the company, and the company shouldn't run the office. Where the two do things for each other, such as shared staff or shared premises, there should be a written service agreement with a fair price. Otherwise non-family executives and minority owners may suspect, correctly or not, that company resources are subsidizing the family.

Office and ownership structure. Many families own the company through a family holding company or trust, and the office often sits alongside or above that structure. The office is a service provider to the owners; the holding company is a legal vehicle for owning the shares. The distinction is explained in family holding companies, and the wider set of options is mapped in family ownership structures.

Office and family council. The council sets the family's direction and policies. The office carries them out. A family office that starts making policy on its own, such as deciding who gets distributions or which relatives receive support, has taken over a role that belongs to the family's own bodies.

Governing the Office Itself

An office that manages the family's wealth needs governance of its own. Families often forget this because the office feels like a back-office function.

Good practice usually includes:

• A written mandate. What the office does, what it doesn't do, and who it reports to.
• A governing body. This might be a board or an investment committee with clear authority, ideally including at least one independent member who can ask awkward questions without fear of family politics.
• Defined decision rights. Which investment decisions the head of the office can make alone, which need committee approval and which need the whole family.
• Conflict rules. What happens when the office hires a relative, invests in a relative's venture or lends to a family member. These are the situations where private arrangements cause the most damage.
• Clear reporting. Regular, consistent reports to the family, so owners who aren't involved day to day can see what's happening.
• A review cycle. A periodic check that the office still fits the family's needs, including whether outsourcing a function would work better.

The office's staff are also a governance issue. They see everything, and their loyalty should run to the family as a whole, not to whichever relative hired them. The family constitution is a good place to state that principle.

Common Pitfalls

Several mistakes show up repeatedly.

Building too early, or too big. A full team can be expensive relative to what it manages. Start with the functions the family really needs and add more later.

Letting it grow without a mandate. Concierge requests pile up, one relative's pet project becomes a standing activity and nobody can say what the office is for. A written scope helps.

Mixing company and family money. An embedded office can drift into using company resources for private purposes. Separate the accounts, document any shared services and price them fairly.

Treating it as a substitute for family governance. The office can administer decisions, but it can't make the family agree. If the relatives are in conflict, an office won't fix it, and it may become the arena where the conflict plays out.

Excluding the next generation. The UBS survey found that only 26% of the surveyed offices had consulted the next generation about succession plans from the outset (same source as above). An office that serves only the founder's generation leaves the heirs unprepared. Including younger family members in education and reporting is part of the job, and it's one of the main defenses against the pattern described in shirtsleeves to shirtsleeves.

Over-relying on one person. A head of the office who holds all the relationships and passwords is a key-person risk. Document processes and make sure someone else can step in.

Skipping the exit plan. Offices aren't permanent. Families merge, split, outsource or wind down offices as they change. It helps to agree in advance how that would work.