The Family Office Guide: Structure, Investments, Governance and Succession

A founder sells a business and suddenly has several hundred million in liquid assets. An industrial family reaches its third generation with operating companies, property, private investments and family members living in several countries. Another family has accumulated five banking relationships, trusts, holding companies and private-market commitments without one person seeing the entire position.

Each can reach the point where private banking, lawyers, accountants and individual investment managers no longer provide enough coordination.

A family office gives one organisation responsibility for keeping the family’s investments, ownership structures, liabilities, liquidity and major financial decisions connected. How much of that work sits inside the office depends on the family. Some employ investment, finance and legal teams of their own. Others use a small internal staff and rely heavily on external specialists.

Among the 307 family offices surveyed for the UBS Global Family Office Report 2026, the participating families had average net wealth of USD 2.7 billion and their offices managed an average of USD 1.3 billion. Sixty-eight per cent used formal financial-performance measurement and 60% had investment committees. Only 35% had a defined succession plan for the family office itself.

Families can build highly organised investment operations while leaving ownership, authority and succession dependent on a small number of people.

What does a family office actually do?

The mandate normally develops around the assets and decisions that cannot be handled well in isolation.

Investment management may include strategic asset allocation, manager selection, private-market investments, direct deals and monitoring several banks or custodians. Finance teams may consolidate reporting, manage cash, follow private-market commitments and coordinate borrowing. Legal and tax advisers work across companies, trusts, foundations, property and personal holdings. The office may also organise succession, family governance, insurance, philanthropy and administrative work.

An entrepreneur who has just sold a company will need a different office from a family that still owns its operating business.

After a liquidity event, the immediate work may centre on reinvesting proceeds, setting up reporting, deciding how much capital should remain liquid and separating private investments from personal expenditure. A multigenerational business family may spend more time on ownership, shareholder agreements, distributions and succession.

International families add another requirement: someone must keep track of decisions made across several jurisdictions and make sure advisers are working from the same facts.

The family office does not need to perform every task itself. It needs to know who is responsible for each one.

When does a family need a family office?

There is no formal asset threshold. Deloitte cites USD 100 million of investable assets as a common benchmark for considering whether the cost of a dedicated family office can be justified. In practice, two families with the same net worth can need very different structures.

A family holding USD 150 million through one custodian and a relatively straightforward ownership structure may not need a standalone organisation. Another family with less capital may own an operating company, several properties, private funds and assets through multiple legal entities while its members live in different countries.

The second family already has a coordination problem. The signs usually appear in ordinary questions:

• How much does the family own in total?
  
  
• Which entity or individual owns each asset?
  
  
• How much money could be made available within 30, 90 or 365 days?
  
  
• How much capital has been committed to funds but not yet called?
  
  
• Which assets are pledged against borrowing?
  
  
• What does each bank actually do for the family?
  
  
• Who can approve an investment, distribution or payment?
  
  
• Who takes over if the person currently coordinating everything cannot do so?

Families do not necessarily need to establish a single-family office when these questions become difficult. They do need someone with enough authority and information to answer them.

Single-family office, multi-family office or hybrid?

A family deciding how to organise its wealth usually has three broad choices.

A single-family office works when control justifies the infrastructure

A single-family office serves one family and can be built around its investments, reporting requirements, privacy expectations and decision-making arrangements.

It becomes more convincing when the family needs permanent internal expertise rather than occasional advice. Large private portfolios, direct investments, active ownership of companies, several generations and frequent financial decisions can all create enough work for a dedicated team.

The family also controls recruitment, technology and the choice of external providers. It pays for that control. Staff need to be hired and retained. Investment systems, accounting, data security and administration have to work even when employees leave. The family also becomes responsible for running another organisation, complete with budgets, employment issues and its own succession problem.

A multi-family office shares the infrastructure

A multi-family office provides services to several families. The family may gain investment oversight, reporting, governance support and access to specialists without maintaining the equivalent staff internally. For families that need more than private banking but do not require a large dedicated team, the economics can be attractive.

Families should examine how the firm earns money. Some multi-family offices are independent. Others belong to banks, asset managers or financial groups. A family should know whether the adviser can select competing institutions freely, whether investment products generate additional revenue and where custody, lending and investment management sit within the commercial relationship.

A hybrid model keeps the coordinating role inside

Many families keep a small internal office and outsource work that does not justify permanent staff. An internal chief executive or finance director might coordinate investments, banks, reporting and family decisions while external lawyers, tax specialists, trustees and investment managers provide specialist expertise.

For many families, this is enough. The deciding question is less about the number of employees than about where institutional memory sits. If every professional is external and each sees only one part of the family, the principal may remain the only person who understands how the parts fit together.

What does a family office cost?

A single-family office behaves more like a business than an investment mandate. Its cost depends on the people and infrastructure the family decides to maintain.

Deloitte cites research showing an average operating cost equivalent to around 0.41% of assets under management across 187 family offices. At USD 250 million of assets, that would put annual operating costs above USD 1 million. The figure should be treated as a reference point rather than a tariff: an office running direct investments and employing a substantial internal team will cost more than one that outsources most specialist work.

Staff usually account for the largest part of the budget. Technology, accounting, tax and legal work, cybersecurity, investment research and administration add to it.

Cost should therefore influence the operating model. A family that needs a chief investment officer, controller and several investment professionals throughout the year may have a strong case for employing them. A specialist needed for two transactions a year probably belongs outside the office.

The cheapest structure is not automatically the best one either. If outsourcing leaves nobody responsible for the combined position, the family may save on salaries while creating duplication, missed information and weak oversight elsewhere.

Managing the family balance sheet

A family office cannot judge the family’s position only from bankable assets. The balance sheet may include an operating company, listed investments, direct private businesses, private-equity funds, property, cash, trusts and foundations alongside borrowing, guarantees, tax liabilities and future fund commitments.

A listed security can usually be sold quickly. A stake in a private company may take months or years to realise. A private-equity fund may show a substantial net asset value while still requiring additional capital. Property may be valuable but already pledged against debt. The family business may represent most of the family’s net worth while generating the income used to finance the rest of the structure.

Rotharia examines these exposures in Wealth Is Usually Lost Outside The Portfolio, including situations in which investment performance remains healthy while liquidity, ownership, leverage or succession create losses elsewhere.

A consolidated balance sheet should therefore show more than current valuations. The family should also see who owns each asset, what debt is attached to it, how easily it can be sold and which future cash demands already exist.

Investments should be judged against the assets the family already owns

Large family offices often invest more like institutions than conventional private clients.

They set strategic allocations, select external managers, use investment committees and increasingly invest directly. UBS found that 60% of the family offices it surveyed in 2026 planned to change their strategic asset allocation during the following 12 months.

A family office has one complication that institutional investors do not always face: the family’s largest economic exposure may sit outside the portfolio.

A founder whose wealth still depends heavily on a technology company may already have enough exposure to technology before buying a thematic technology fund. A property-owning family may have far more real-estate risk than its securities portfolio suggests. A family whose operating company earns mainly in US dollars may want to include that exposure when deciding the currency mix of its liquid investments.

The office should also consider investments proposed by different banks together.

One bank can build a diversified mandate while another independently buys many of the same underlying companies or market factors. Each portfolio can look sensible on its own while the combined exposure does not.

Private markets make liquidity planning harder

Private equity, venture capital, private credit and direct investments fit naturally into many family-office portfolios. Families can tolerate long holding periods and, particularly when their wealth comes from entrepreneurship, may have sector knowledge that helps them assess private businesses.

The family office should nevertheless plan around commitments rather than current valuations alone. A USD 10 million commitment to a private-equity fund does not mean USD 10 million leaves the account on the first day. The fund calls capital over time. Several managers can issue calls during the same period, including when public markets are weak and selling liquid assets is least attractive.

Private-market commitments should therefore sit in the same cash-flow forecast as taxes, family distributions, property spending and debt maturities.

Direct investments require another level of work. Buying a meaningful stake in a private company may require commercial, financial and legal due diligence, shareholder negotiations, board representation and subsequent monitoring. A family office that wants direct-investment access should decide whether it has enough internal capability to evaluate those transactions or whether it will rely on external specialists.

Several banks can improve diversification and still make the family harder to manage

International families commonly use more than one private bank. There are good reasons for doing so. One bank may provide custody and discretionary management, another lending and another access to a particular market. Families may also prefer not to depend on one institution for all cash, securities and credit.

Problems start when relationships accumulate without defined roles. Rotharia’s The Risks Hidden In Multiple Banking Relationships examines duplicated investments, pledged assets, fees, credit facilities and relationship-manager dependency across several institutions.

A family office should know what each bank is retained to provide and what would disappear if the relationship ended. It should also maintain a combined view of borrowing.

If three banks lend against different securities portfolios, each institution may be comfortable with its own collateral. The family still needs to know how all three facilities behave if markets fall sharply at the same time.

Liquidity should be measured after pledged assets, future commitments and tax reserves have been accounted for.

Ownership determines who can make decisions

Families frequently hold wealth through several legal forms. A company may belong to a holding structure. Investment accounts may be owned by trusts or foundations. Different family branches may hold voting and economic rights in different proportions. Property can remain personally owned while financial assets sit elsewhere.

The family office should maintain an accurate ownership map alongside the investment report. The distinction becomes critical when decisions have to be made quickly. The person accustomed to making a decision may not legally control the entity that owns the asset. Trustees, directors or other shareholders may have responsibilities that become visible only during a sale, dispute, death or incapacity.

Families should periodically check whether the way decisions are made in practice still matches the authority contained in shareholder agreements, trust documents and company records.

Family governance starts with the people who own the assets today

Governance work often begins with younger family members: how they should be educated, when they should enter the business and how they should eventually participate in investments.

Current owners first need to settle their own rules. Who can decide whether the family business is sold? How are distributions agreed? Can family shareholders transfer holdings outside the family? What decisions belong to directors and what decisions remain with owners? What happens when one branch wants liquidity while another wants to preserve the business?

A family council or constitution can document some of these arrangements, but the name of the mechanism matters less than whether people know where authority sits.

Rotharia discusses the sequencing in Family Governance Often Starts In The Wrong Place, which argues that current owners need to define ownership and decision rights before preparing heirs to operate within them.

Governance should also cover the office itself. A chief investment officer needs to know which decisions require approval. Finance staff need clear payment authority. External managers need to know who can change a mandate.

A small office may handle this with short written policies. A large one may use boards, investment committees and formal approval procedures.

Succession involves several different jobs

Transferring wealth and transferring control are not the same event. The management of an operating company can pass to a professional chief executive while voting control remains with family shareholders. Economic ownership may eventually be spread across several branches. A trust can control assets on behalf of beneficiaries who do not make day-to-day decisions. The family office itself may need a new chief executive long before ownership changes.

Families should decide separately who will:

• own the assets;
  
  
• exercise voting rights;
  
  
• run operating companies;
  
  
• make investment decisions;
  
  
• represent the family;
  
  
• oversee the family office.

UBS’s 2026 survey shows how much work remains in this area. Fifty-seven per cent of respondents had a wealth-succession plan for family members, but only 35% had a succession plan for the family office itself. Just 27% had an organised process for preparing the next generation for future roles.

Heirs do not need to become professional investment managers simply because they inherit ownership. They do need enough financial and governance knowledge to understand the decisions for which they will eventually become responsible.

The family office can give younger family members practical exposure before authority transfers. Investment committees, philanthropy, boards and defined projects can provide experience without handing over the entire balance sheet at once.

Unexpected incapacity should be planned alongside generational succession. A ten-year education programme for heirs does not answer who can authorise payments or speak to a bank tomorrow if the principal is suddenly unable to do so.

Reporting should follow ownership, liquidity and risk

A family can receive excellent reports from every bank and still lack an accurate view of its wealth.

Each institution normally reports the assets it holds. Private investments may use different valuation dates. Property may be updated infrequently. One entity may report in Swiss francs while another works in US dollars. Tax advisers and trustees may maintain records that never enter the investment system.

Family-office reporting should connect those datasets. Depending on the family’s structure, it may need to show ownership by entity, liquid and illiquid assets, investment exposure, debt, pledged collateral, private-market commitments, cash flows and performance after fees.

Software can automate much of the collection and reconciliation work, but it cannot correct information nobody has defined properly.

Rotharia’s How to Select Family-Office Software Without Buying an Expensive Data Problem looks at this problem before the technology purchase: where data comes from, which entity owns each asset, how private assets are valued and where information is stored.

The software should follow the family’s reporting model rather than force the family to organise itself around the software.

Technology creates a second asset that needs protection: the family’s information

Family-office systems contain far more than portfolio values. They may hold passport details, company records, trust documents, bank instructions, home addresses, travel information, family relationships and records of private investments. Email accounts and payment workflows can give attackers both information and a path to money.

Cybersecurity therefore belongs inside normal family-office operations. UBS found that only 41% of the offices surveyed in 2026 reported having cybersecurity controls among the practices listed in its study. That is considerably lower than the 68% using formal financial-performance measurement.

At minimum, offices should control who can access systems, use strong authentication, verify payment instructions independently, maintain backups and review the security arrangements of external providers.

Access should also change when people leave. A former employee, consultant or family member should not retain credentials simply because nobody removed them.

Artificial intelligence introduces similar questions. Family offices can use AI for research, document analysis, reconciliation or administrative work, but confidential documents should not be uploaded into tools without knowing where the data is stored and whether it can be used outside the family’s environment.

Decide what needs to stay inside the office

Outsourcing works best when the family knows what it is outsourcing. Tax opinions, specialist legal work, cybersecurity reviews and individual due-diligence assignments may not justify permanent employees. External investment managers can also provide capabilities that would be expensive to reproduce internally.

The office should be more cautious about outsourcing the only copy of its institutional memory. Someone close to the family should normally understand the ownership structure, major banking relationships, outstanding commitments, regular cash needs, decision rights and unresolved issues across advisers.

Only 31% of family offices in the 2026 UBS survey reported having a process for selecting and reviewing external service providers. A family that delegates heavily has more reason, not less, to review who has access to information, what each adviser is paid and which responsibilities may be falling between firms.

Cross-border families need coordination across jurisdictions

An international family can have members living in several countries while companies, investment accounts, trusts, foundations and property are located elsewhere.

Each location can create different tax, reporting, inheritance and regulatory consequences. The family office should therefore keep a jurisdiction map alongside its ownership map.

Moving a family member from London to Dubai, for example, does not automatically change the tax treatment of a trust established elsewhere or the reporting obligations attached to assets held in another country. A bank in Switzerland may see the financial assets it holds without seeing liabilities or structures elsewhere.

External advisers remain essential because local rules require local expertise. The office’s role is to make sure the advisers are answering the same factual question. A Swiss lawyer, UK tax adviser and trustee cannot coordinate properly if each receives a different version of the ownership structure.

Cross-border planning should also justify complexity rather than create it. An extra entity or jurisdiction can solve a specific legal, tax, succession or investment problem. If nobody can explain what the structure still accomplishes, the family is paying to maintain complexity it may no longer need.

Risk often appears where two parts of the structure meet

Market volatility is visible. Many family-office failures are less obvious until a transaction, death, dispute or liquidity shortage forces several systems to interact.

Liquidity, leverage and concentration

These risks reinforce one another. A family may have a large net worth but little available cash because wealth sits in a company, property and private funds. Borrowing can cover temporary needs, but pledged portfolios become vulnerable if falling markets trigger additional collateral requirements.

Concentration in the family business deserves separate attention. The business may already dominate the family’s income, net worth and geographic exposure. Investment portfolios should not unintentionally reproduce the same risks.

Stress tests should therefore combine assets and liabilities rather than modelling each account separately.

Operational and cybersecurity risk

A missed tax filing, incorrect ownership record, fraudulent payment or departure of one employee can produce losses without any investment position moving.

Family offices should know which processes depend on one person and which information exists only in an adviser’s system or employee’s inbox.

Payment controls, document management and secure access are mundane compared with investment strategy. They are also among the controls most likely to be tested unexpectedly.

Governance and adviser dependency

A valid legal structure does not resolve disagreement among owners. Nor does employing several respected advisers guarantee that somebody sees the combined position.

Banks, investment managers, trustees and lawyers each work under their own mandates. The family office has to decide who is responsible when a question crosses those mandates.

What should a well-run family office be able to answer?

A family does not need a large organisation to run its affairs well. It does need reliable answers.

At any point, the office should be able to say:

• what the family owns and through which entities;
  
  
• how much wealth is genuinely liquid;
  
  
• what private-market capital is still committed;
  
  
• which assets are pledged;
  
  
• how much the family owes and when debt matures;
  
  
• what each bank and external adviser is responsible for;
  
  
• where investment exposures overlap;
  
  
• who can authorise major financial decisions;
  
  
• what happens if the principal or a senior family-office executive is unavailable;
  
  
• which members of the next generation are being prepared for ownership or governance roles;
  
  
• what information would be lost if a key employee or adviser left.

The family office has done its job when these answers do not depend on one person’s memory.

Further Reading on Rotharia

For readers who want to explore individual parts of family-office management in more detail, the following Rotharia articles look more closely at succession, technology, investment strategy, banking relationships and the changing role of family offices across different markets.

Preparing Next-Gen Leaders in Family Offices

Preparing heirs for ownership requires more than financial education. This article looks at how family offices can give younger family members practical experience with investments, governance and decision-making before they assume greater responsibility.

The Rise of Digital Stewardship in Family Offices

Family offices increasingly depend on digital systems for reporting, documents, communication and oversight. The article examines how that changes responsibility for protecting information and maintaining control over family data.

The Rise of Millennial Leadership in Family Offices

Generational change can alter more than ownership. Younger family members may bring different expectations around technology, sustainability, private markets and the role wealth should play beyond financial preservation.

Rise of Multi-Family Offices in Emerging Markets

Entrepreneurs and newly wealthy families in Asia, the Middle East, Latin America and other growing wealth centres are increasingly looking beyond traditional private banking. This article examines why the multi-family-office model is expanding and what families should assess when choosing a provider.

The Rise of Sustainable Investments in Single Family Offices

Sustainable investment becomes more complicated when a family moves beyond simple exclusions. Rotharia looks at investment mandates, direct investments, private markets, reporting and the disagreements that can arise when generations define sustainability differently.

The Rise of Private Credit in Global Markets

Private credit has become a larger part of institutional and family-office portfolios. This article examines the higher yields available in private lending alongside illiquidity, underwriting risk, manager selection and less transparent valuations.

Five Private Banks Can Still Build One Portfolio

Using several private banks can reduce dependence on one institution without necessarily improving diversification. Rotharia looks at overlapping holdings, combined exposures and why someone still needs responsibility for the portfolio as a whole.

Philanthropy and Impact Are Becoming Central to Wealth Management in 2026

For families that want philanthropy to become part of long-term wealth planning, this article looks at foundations, impact investing, intergenerational participation and the additional coordination required when charitable activity crosses jurisdictions.

Why Childless Couples Still Need an Estate Plan

Succession planning does not only concern large multigenerational families. This article looks at inheritance planning for childless couples and the decisions that become more important when there are no descendants to inherit directly.