Build a Single Family Office Around the Work It Must Own

A single-family office is not ready because a company has been formed and a chief investment officer hired. It is ready when the family has decided what the office will do, who can authorize each action, where each entity's records live, and how a failed payment or report will be corrected.

A useful sequence is a service charter, an authority and entity map, a legal and tax review, a priced staffing plan, and a controlled first operating cycle. Some work may stay with advisers or a multi-family office. A dedicated office should earn its cost and complexity by solving a defined family problem.

01Decide whether the family needs its own office

Start with a work inventory, not a wealth threshold. The same asset value can produce very different needs: one family holds a few liquid accounts; another owns operating businesses, private funds, real estate and trusts with different approvers. The choice is between a dedicated team, a coordinator with specialist providers, or continuing with the family's existing advisers. Our family-office structures guide compares those operating patterns in detail.

Ask the family to name the service failure it wants to fix. Is no one consolidating entity records? Are tax and investment decisions made from different numbers? Do principals need a controlled process for commitments, payments and information access? Or is the current arrangement working, with only one missing service? A new office can be excessive if a defined outside service and one accountable family-side owner would close the gap.

Choose the operating route against that inventory. Keep existing advisers if the gap is discrete and a named family-side owner can coordinate the fix. Use an MFO or hybrid coordinator if several functions need integration but a written provider scope covers the work, controls and backups at an acceptable full cost. Build a dedicated office when sustained cross-entity work, privacy or decision-control needs require a retained team that providers cannot cover on agreed terms. Compare each route on the same service scope, family time, information access, failure recovery and total cost; asset value alone does not decide it.

For the fictional family used below, the required jobs are two-entity payment control, entity books, a monthly family report and tax coordination. Its route decision is still open:

The family should defer the dedicated-build decision until it has the two alternative scopes, costs and retained-effort estimates. If existing providers can meet the charter and first-cycle test within the family's control and cost limits, creating an office adds no demonstrated benefit for this example.

Brown Brothers Harriman's considerations begin with service needs, staffing and costs, and J.P. Morgan's guide starts with purpose and stakeholders. Neither supplies a universal minimum asset figure for an office. A rough dollar threshold from a provider page is a discussion aid, not permission or proof that the model pays for itself.

Decision to build: list the three to five jobs an office must own, the work it will buy, the annual cost ceiling the family is willing to fund, and the named person who can approve a launch. If the family cannot agree on that perimeter, postpone formation and hiring.

02Write a service charter and authority map

The charter should say who the office serves and what it delivers. Keep the first version narrow enough to operate: investment oversight, entity accounting, bill pay, tax coordination, reporting, philanthropy or personal administration are different jobs. For each one, specify the output, recipient, frequency, source record and escalation owner. “Manage family wealth” is too broad to assign or test.

Separate three things often called the structure. The operating model says which people or firms do the work. The legal and ownership structure says which entities own assets, employ staff and sign agreements. Decision authority says who may approve a payment, hire a manager, change policy or release a report. A management company may coordinate all three without owning the assets it reports on.

For every proposed service, copy these charter fields:

• Scope and client: launch or defer; the family client and legal entity served.
• Output: what is delivered, when, and which source record controls it.
• Responsibility: preparer, legal approver, backup and exception owner.
• Retained decision: what the authorized family body still decides.

For the capital call below, the launch scope is the investment holding LLC's notice-to-ledger payment record for each call. The controller prepares it, the LLC's authorized signer approves the wire, and the treasury deputy handles an exception. The authorized family body retains the decision to make the underlying investment commitment. Replace those titles with actual legal appointments. A deferred service keeps its current provider and permissions.

Write who resolves a disagreement between the preparer, external adviser and family approver. The principal should not discover at first close that every party assumed another party owned the exception. Fidelity's expert interviews emphasize purpose, specialist advice, staffing, operational risk and communication; the exact roles still depend on this family's charter.

Approved charter: the principal or designated family decision body signs the service perimeter and authority matrix. That approval authorizes counsel to test a specific operating design; it does not authorize live bank or custody permissions from an unresolved org chart.

03Test the legal and tax design before forming entities

The management or service company, investment holding vehicles, trusts, partnerships and family members can be different legal persons. Counsel should identify which entity contracts with employees and providers, which holds each asset, which pays office costs, and who may give investment advice or direct trades. Forming one LLC does not automatically transfer assets into it or give it authority over a trust.

For investment advice, have US securities counsel test the actual arrangement against the SEC family-office rule. The Advisers Act exclusion requires advice only to defined family clients, an office wholly owned by family clients, exclusive control by family members or family entities, and no holding-out to the public as an investment adviser.

The SEC staff FAQ shows why client, ownership and control details matter. It does not say every employee or manager must be a family member. A qualifying federal exclusion also does not settle state securities, trust, tax or employment questions.

Tax counsel should review whether the proposed charge-back of office costs, investment activities and entity form have the expected tax treatment. Do not assume a cost is deductible because the office has an LLC or because family members share expenses. Confirm state formation, beneficial-ownership and any trust/company filings applicable to the chosen facts before opening accounts.

If the office will employ people, assign the employer and payroll obligations. The IRS's employer guidance distinguishes employee from contractor and describes withholding and employment-tax duties. Its EIN guidance ties identification to actual entity and tax needs; an EIN for one company is not a blanket identifier for every family asset entity.

Legal design cleared: retain an entity diagram, written advice on the proposed services and SEC/state status, tax/payroll responsibilities, and a list of agreements and accounts to open. Record unresolved points as blockers for the affected service or entity rather than filling them with a template.

04Price the operating model and assign the team

Build the budget from the charter's work, not from an advertised “family office cost.” Compare an internal hire with a provider proposal only when both cover the same tasks, controls, reporting frequency and backup. A lower invoice can conceal family-side coordination time, outside legal work, data cleanup or an excluded exception process.

This fictional first-year budget illustrates the calculation, not a market price or minimum for an office:

The family should replace every figure with its own quote or approved assumption. Do not count an outside tax fee twice inside a staff or bundled-provider line. The reserve is planned capacity, not money already owed.

A subsequent-year planning figure is US$1.3 million only if scope and rates continue and the one-time work does not recur. Dividing budget by asset value may help compare models, but assets are not a cash source and cost per assets alone does not measure service quality.

For the fictional decision, assume the principal approves and funds a US$1.6 million first-year ceiling and a US$1.35 million recurring-year ceiling for the stated scope. The model has US$50,000 headroom against each: US$1.6m − US$1.55m first year and US$1.35m − US$1.30m recurring.

This is a conditional budget pass, not authority to hire. The family still needs actual quotes, a reviewed funding arrangement for the operating company and a comparable hybrid/MFO quote for the same work. Log each line's owner, quote or assumption, one-time/recurring treatment and exclusion. If the completed scope exceeds either ceiling, resize it or obtain new family approval.

In this fictional budget, a net increase above US$50,000 in first-year quotes or migration work breaches the US$1.6m first-year ceiling; a net recurring increase above US$50,000 breaches the US$1.35m ongoing ceiling. Record any real offset against the same scope before contracting. The US$50,000 headroom is not a general rule for how much reserve an office should hold.

Assign one accountable leader for each output even when the work is outsourced. A small office may use a family-side CFO/COO, a controller or provider team, legal/tax specialists and an investment adviser. A CIO is not automatically the first hire; the first gap might be payment control or entity accounting. The family should review conflicts, confidentiality, access rights, substitute staff, service levels and termination terms before contracting.

Funded operating plan: obtain a 12-month funding authorization, like-for-like internal/provider scopes, role owners and deputies, signed terms for critical services, and a capacity plan for the first reporting cycle.

05Put records, banking and security under control

Choose systems only after naming the authoritative records. For each entity, map its bank accounts, custodians, investment and general ledgers, tax records and signed documents. A consolidated dashboard may display them, but it does not determine which legal entity may spend cash or which ledger entry is correct. Our data-aggregation guide shows how to trace a reported number back to its source.

Give each provider the least access needed to perform its job. Separate payment preparation from release, restrict changes to beneficiary instructions, log approvals, and maintain a controlled process to recover access when a staff member leaves. Test backup and restore for the records the family would need during a close or a breach. Secure document exchange is part of the operating design, not a later software feature.

For the operating bank, identify the actual depositor, paying entity, signers, payment limits, cutoff and backup route. For custody, identify the actual legal custodian and account owner. For an outside adviser, identify its mandate and discretion. The family-office bank guide gives a common payment test for banking finalists; apply the same entity discipline here before moving money.

Ready for first-cycle testing: retain a signed account-and-record inventory, production access matrix, data owner for each source, reconciled opening balances, backup/restore evidence and incident contact list. An attractive report alone is not proof of any of these.

06Run one complete service cycle before cutover

Use a fictional launch test to make the handoffs observable. On the last Friday of the reporting month, the family's investment holding LLC owes a US$400,000 capital call requiring beneficiary receipt by 3:00 p.m. Eastern. Its settled, unrestricted opening bank cash is US$550,000.

The management company separately owes a US$12,000 invoice for software services consumed in that same month by Friday close of business and has US$100,000 settled, unrestricted opening cash. The first monthly entity report is due by the fifth business day after that month-end. These are illustrative obligations of different legal entities, not a recommendation to pool cash.

The family need not move every asset or hire every planned employee to run this test. It can begin with a controlled subset and parallel report.

A rehearsal using dummy permissions does not prove that production users, limits and accounts work. Before cutover, run an appropriately sized live transaction or obtain equivalent production evidence for each paying entity and workflow included in the launch scope; reconcile each receipt and book entry. A smaller trial does not prove that the bank's real US$400,000 limit is approved. Keep the previous provider or payment route available for every untested entity and service.

The completed test record should show each payer's opening balance, signed approval, release and recipient evidence, expected versus actual closing balance, ledger entry and report line. Pass only when every entity in the approved launch scope reconciles and the report is accepted by its release authority on time. A missing recipient acknowledgment, unreconciled US$400,000 call, misposted US$12,000 expense or unresolved signatory permission is a fail for the affected entity's cutover even if the report carries a labelled exception. An untested production limit is unknown, with a bank proof owner and date—not a pass from the small trial.

Record the actual launch perimeter by service and entity. The entries below are planned test rows, not claimed results: no real payment, receipt or close has occurred.

For each row, replace unknown with pass or fail only after recording dated evidence and the approver's decision. Transfer only passed services and permissions; a payment trial does not approve investment or tax work.

The launch decision should name the family approver, office leader, provider owners, open items, test evidence and first review date. A “go live” date without those records is an aspiration, not acceptance.

07Govern the office after opening

The first operating cycle is a beginning. Set a calendar for investment-policy review, entity close, tax deadlines, provider due diligence, access recertification and family reporting. Record which family body sets priorities, who can approve an exception and when a decision returns to the family. A family council can discuss values and education without being given payment or investment authority by implication.

Review the office against its charter after the first quarter and year. Which service improved, what remained with outside advisers, which exceptions repeated, and what did the office actually cost? Renew or end services on that evidence. Keep export rights, documentation and deputies current so a departing employee or provider does not become the only keeper of institutional memory.

Also plan for the family decision-maker's absence or incapacity. The family and counsel should identify which governing instrument or valid delegation gives a successor authority to approve an investment, payment or report; an employee deputy does not inherit a principal's legal authority by job title. Review those appointments on a set schedule and test that banks, custodians and providers recognize the current signers before an emergency.

The setup is complete enough to operate when the family can point to the people, agreements, records and tested controls behind each promised job. It need not imitate a large institution to meet that standard.