Family Offices in 2026: Costs, Structure, Regulation, and What Surveys Show About How They Invest

A family office is a private organization that runs a wealthy family's financial life: investments, taxes, estate planning, reporting, philanthropy, and often personal security and household administration. It exists because at a certain level of wealth, coordinating a dozen outside advisors becomes a full-time job, and because a family may want investment access and privacy that a private bank cannot offer.

The two largest annual surveys give a picture of how family offices operated in 2026. UBS surveyed 307 family offices with an average family net worth of $2.7 billion; J.P. Morgan surveyed 333 with an average of $1.6 billion. This guide uses both to cover the cost of running an office, the choice between single- and multi-family offices, the regulatory and tax setup, investment trends, and governance.

Single-family, multi-family, or virtual

• Single-family office (SFO). A company owned and controlled by one family, with its own staff. Maximum control, privacy, and customization, at the highest cost.
• Multi-family office (MFO). A firm serving several families, usually registered as an investment adviser. Shared costs and investment platforms, less customization.
• Virtual or outsourced office. A small in-house team, sometimes one chief financial officer, who coordinates outside firms for investment management, accounting, and legal work.

What an office costs

J.P. Morgan's 2026 survey found an average annual operating cost of $3 million, with 40% of offices spending under $1 million and 11% over $7 million. Median budgets rose with size, from about $0.9 million for offices overseeing $250 million or less to $6.6 million for those above $1 billion. UBS data cited by Morgan Lewis puts operating costs at roughly 105 basis points of assets for offices under $500 million and about 36 basis points for offices over $1 billion, with staff about two thirds of the total.

An illustration: a family with $150 million running its own office at 105 basis points spends about $1.58 million a year before investment fees. If a multi-family office charged 0.6% for a comparable service, the cost would be $900,000. At $1.5 billion, the same 36 basis points reported for large offices comes to $5.4 million, a far smaller share of assets. That is why a dedicated office usually makes sense only well above $100 million, unless the family has complexity, such as an operating business or many entities, that an MFO cannot handle.

Regulation and legal setup

The SEC family office rule. An office that meets the SEC's family office rule (2011) is excluded from the Investment Advisers Act and does not register. It must advise only "family clients," be wholly owned by family clients, be controlled by family members or family entities, and not hold itself out to the public as an investment adviser. Advising a friend's family, sharing the office with a business partner, or bringing in outside co-investors can break the exclusion. Offices that hold large public stakes still file the usual ownership reports, such as Form 13F above $100 million in qualifying securities.

Beneficial ownership reporting. Under an interim final rule from March 2025, FinCEN removed Corporate Transparency Act reporting requirements for US companies and US persons, so domestic family office entities no longer file beneficial ownership reports. Foreign entities registered to do business in the US still do.

Tax structure. For individuals, investment management expenses are miscellaneous itemized deductions, which the 2017 tax law suspended and the One Big Beautiful Bill Act eliminated permanently. A family office set up as a simple cost center therefore produces no deduction. In Lender Management v. Commissioner (T.C. Memo. 2017-246), the Tax Court allowed a family office to deduct its expenses as a trade or business, because it operated like a real investment manager: employees, active management, and a profits interest in the family investment entities. Getting there requires careful structuring and consistent operation, not just paperwork.

How family offices invest

Themes from the 2026 surveys:

• More reallocation than usual. UBS reported that 60% of family offices planned changes to their strategic asset allocation over the next 12 months, the highest share it has recorded, with geopolitical conflict ranked as the top risk.
• Large alternatives exposure. Private equity, private credit, real estate, hedge funds, and infrastructure make up a large part of the typical portfolio. Slow private equity distributions have pushed some offices toward private credit, secondaries, and infrastructure; see our private credit guide and alternative investments guide.
• Outsourcing. J.P. Morgan found that 80% of offices outsource at least part of portfolio management.
• Digital assets remain small. UBS found 24% of offices held crypto, usually at low single-digit percentages.

The advantage family offices have is time. Without redemption requests or quarterly benchmark pressure, they can hold illiquid assets, commit to funds through a full cycle, and make direct investments in private companies. The disadvantages are concentration (many families still hold most of their wealth in the business that created it), limited diversification in direct deals, and the difficulty of hiring investment staff who can compete with institutional investors for the best deals. Direct deals also need their own diligence process; see our private equity guide.

Governance

UBS found that fewer than half of family offices had formal governance frameworks with board-level oversight, and only 35% had a defined succession plan for the office itself. J.P. Morgan reported formal investment policy statements at 35% of offices and boards of directors at 32%.

The often-repeated claim that 70% of family wealth is gone by the second generation and 90% by the third traces back to a consultancy survey and is not well supported by data. The more reliable problem is arithmetic: families grow faster than wealth after spending and taxes.

An illustration: a founder with $300 million and three children, each of whom has three children. If the portfolio grows 1% a year in real terms after spending, it reaches about $493 million in 50 years. Split among nine grandchildren, that is about $55 million each; split among 27 great-grandchildren, about $18 million each, before estate taxes. Governance that decides who can draw money, how, and on what terms matters more than investment returns in keeping the family's shared capital together.

Common governance tools:

• Family constitution or charter. Mission, who counts as family, how decisions are made, rules for family employment, and how members can exit.
• Family council. Represents branches and generations, meets regularly, and handles communication and disputes.
• Investment committee. Sets the investment policy statement, ideally with independent outside members.
• Liquidity policy. How and when members can sell their interests, at what valuation, and over what period, so one branch's needs do not force a fire sale.
• Education. Preparing the next generation to be owners and board members, not just beneficiaries.

Risk management

• Cybersecurity and fraud. Family offices are small organizations moving large sums, which makes them targets for business email compromise and deepfake impersonation; engineering firm Arup lost about US$25 million in 2024 after an employee joined a video call with deepfaked executives. Require call-back verification for payments and multi-person approval above set amounts. Our cybersecurity insurance guide covers the insurance side.
• Privacy and physical security. Property records, corporate filings, and social media can reveal more than families expect.
• Key-person risk. Small offices often depend on one executive who knows everything; document processes and access.
• Legal structure. Trusts, LLCs, and insurance to separate assets from liabilities; see our asset protection guide and trust planning guide.

Setting one up

1. Map the family's current costs for advisors, accounting, and legal work, and what they deliver.
2. Decide whether an MFO, a virtual office, or a dedicated SFO fits the family's wealth and complexity.
3. Confirm the structure fits the SEC family office rule, and design the tax structure with counsel before hiring.
4. Write an investment policy statement and form an investment committee with independent members.
5. Draft a family charter with a liquidity policy and succession plan for the office itself.
6. Build cybersecurity, payment controls, and privacy practices from the start.
7. Coordinate with the family's estate plan; see our estate planning guide and philanthropy guide.

For households below family office scale, our high-net-worth planning guide covers the same issues with outside advisors.

This guide is for informational purposes only and does not constitute legal, tax, or investment advice. Survey figures are from UBS and J.P. Morgan reports published in 2026. Family office structures raise complex regulatory and tax questions; consult qualified legal, tax, and investment professionals.