Setting up a family office is a sequence of linked decisions: confirm the asset base supports the overhead, choose between a single-family, multi-family, or virtual model, form an LLC or corporation in a chosen state, draft the governance documents that will run the operation, obtain a federal tax ID, and structure everything to preserve the family office exemption from investment adviser registration. Each step carries tax and regulatory consequences that are difficult to unwind later, so the order matters as much as the choices themselves.
Confirm the Numbers Work First
A dedicated family office is expensive. Annual operating costs typically run between 0.2 and 0.7 percent of total assets under management, which for a family with $100 million means roughly $200,000 to $700,000 per year in staff, technology, legal fees, insurance, and overhead before any investment returns.
The commonly cited threshold for launching a single-family office is $100 million to $250 million in investable assets. Below that range, outside advisors or a multi-family office usually cost less than running your own operation. Some practitioners argue a leaner setup works at $50 million, but that generally means a virtual office built around outsourced professionals rather than full-time employees. A fractional CFO alone runs $150 to $350 per hour, and legal, tax, and compliance costs stack on top.
The decision isn’t only about assets. Families consolidate into a dedicated office when the complexity of their holdings, the number of family members involved, or the need for privacy exceeds what fragmented outside providers can coordinate. Multiple trusts, direct investments in private companies, a philanthropic program, and three-generation estate planning in one household start to earn back the overhead through coordination that outside firms cannot replicate.
Pick a Structure: SFO, MFO, or Virtual
Three organizational models dominate, and each carries different regulatory consequences under federal securities law.
A single-family office serves one family. To qualify for the federal exemption from investment adviser registration, the office must be wholly owned by family clients, exclusively controlled by family members or family entities, and must not hold itself out to the public as an investment adviser. Meet those conditions and the office falls outside the Investment Advisers Act entirely: no SEC registration, no Form ADV, no periodic federal examinations.1U.S. Securities & Exchange Commission. Family Office – A Small Entity Compliance Guide
A multi-family office pools resources across several unrelated families, which spreads the cost of professional staff and technology. The tradeoff is regulatory: because the office advises more than one family group, it typically must register as an investment adviser with the SEC or a state securities regulator. Registration brings annual filings, recordkeeping, and potential examinations.
A virtual family office skips the physical infrastructure. A small internal team coordinates outsourced lawyers, accountants, and investment managers through digital platforms. The virtual model fits families whose asset base doesn’t yet justify permanent overhead or who prefer not to manage employees. Regulatory treatment depends on whether the virtual office itself gives investment advice or simply coordinates outside advisors who are independently registered.
Choose an Entity Type
Most family offices organize as a limited liability company or a corporation. The choice shapes taxes, management flexibility, and how ownership moves between generations.
The LLC is the more popular option. Profits and losses pass through to members’ personal returns, which avoids the double taxation that hits C corporations at both the entity and dividend levels. LLCs also allow flexible management: family members can manage directly or appoint outside managers, and multiple classes of membership interests can give senior members control while gradually shifting economic interests to the next generation. An LLC can also elect corporate tax treatment later if circumstances change.
A corporation makes sense in narrower situations: when the office plans a large employee base with equity compensation, when a board-of-directors model is preferred from the start, or when outside investors may enter later. S corporation status preserves pass-through taxation but limits the number and type of shareholders, which can become restrictive as the family grows. C corporation status brings double taxation but allows more flexibility in ownership structure and retention of earnings at the entity level.
Draft Governance Documents Before Filing
Internal governance should be drafted before anything goes to the Secretary of State. Backfilling governance after formation is a common mistake, and the gaps usually surface during a disagreement when real money is involved.
An investment policy statement defines the family’s risk tolerance, target asset allocation, liquidity needs, and performance benchmarks. It gives the investment team clear authority and boundaries. Without one, disagreements over strategy tend to surface during market downturns, when emotions are already running high.
A family governance charter or constitution sets the decision-making framework: who sits on the board or advisory committee, how votes work, how disagreements get resolved, and how the next generation moves into leadership. Succession planning belongs here. Identify how leadership transitions will work, what qualifications family members need before taking governance positions, and what happens to the office if the founding generation becomes incapacitated.
Operating agreements for LLCs, or bylaws for corporations, provide the legal framework underneath the governance vision. They address membership or share classes, distributions, transfer restrictions, and the process for admitting or removing members. They also designate a registered agent to receive legal correspondence, which every state requires.
File with the State
With governance documents in hand, file articles of organization for an LLC or articles of incorporation for a corporation with the Secretary of State. Most states accept online filings. Filing fees range from under $50 to several hundred dollars depending on the state and entity type, with expedited processing available in most jurisdictions for an additional charge.
The filing requires a legal name (check availability in the state’s business registry first), the registered agent’s name and address, and a statement of purpose. For a family office, the purpose statement should describe managing the financial affairs of the family. A corporation also specifies the number and type of authorized shares.
Delaware and Wyoming attract family offices for their business-friendly statutes, privacy protections, and developed case law. Forming in a state where the office has no physical presence means also registering as a foreign entity in the state where you actually operate, which adds a second layer of filing fees and annual reports. Many families form in the state where the office will be located to avoid the duplication.
Get an EIN and Prepare for Payroll
After formation, apply for an Employer Identification Number through the IRS website. The application is free and the number issues immediately. The IRS recommends forming the entity with the state first, because applying for an EIN before the entity exists can cause processing delays.2Internal Revenue Service. Get an Employer Identification Number
The EIN is the entity’s tax identity, used to open bank and brokerage accounts, file tax returns, and run payroll. Once the office has employees, it becomes an employer with federal withholding obligations. The employer share of FICA is 7.65 percent of wages, split between Social Security (6.2 percent, applying to wages up to $184,500 for 2026) and Medicare (1.45 percent).3Social Security Administration. Contribution and Benefit Base FUTA applies at a net rate of 0.6 percent on the first $7,000 of each employee’s wages after state unemployment credits, and the Additional Medicare Tax of 0.9 percent must be withheld from wages exceeding $200,000 in a calendar year. These obligations carry quarterly deposit and annual reporting requirements, so integrating payroll software or a payroll provider early reduces compliance friction.
Protect the Family Office Exemption
The federal family office exemption from investment adviser registration is codified at 17 CFR ยง 275.202(a)(11)(G)-1. Losing the exemption is expensive and disruptive, so the three requirements are worth internalizing: the office advises only family clients, is wholly owned by family clients and exclusively controlled by family members or family entities, and does not hold itself out publicly as an investment adviser.4eCFR. 17 CFR 275.202(a)(11)(G)-1 – Family Offices
“Family client” is broader than blood relatives. It covers all lineal descendants of a common ancestor, their spouses and spousal equivalents, and former family members (so divorce does not automatically disqualify someone). It also includes key employees: executive officers, directors, trustees, general partners, or non-clerical employees who participate in the office’s investment activities and have performed similar work for at least twelve months.1U.S. Securities & Exchange Commission. Family Office – A Small Entity Compliance Guide
The definition extends to trusts whose current beneficiaries are all family clients, charitable foundations and nonprofits funded exclusively by family clients, and companies wholly owned by and operated for the sole benefit of family clients. If a non-family client inherits assets through a death or other involuntary transfer, the rule gives a one-year grace period to resolve the situation before exempt status is at risk.4eCFR. 17 CFR 275.202(a)(11)(G)-1 – Family Offices
The key employee provision is the most common tripping point. Letting a trusted non-family investment professional invest through the office seems harmless, but if that person doesn’t meet the key employee definition, the office now has a non-family client and the exemption evaporates. Former key employees face restrictions too: after leaving, they can only receive advice on assets already being managed before their departure, with limited exceptions for pre-existing contractual commitments.
Note the state layer. State securities regulators don’t uniformly follow the federal rule. Some require a notice filing or Form ADV submission claiming the exemption even when the office qualifies at the federal level, and some have their own family office definitions. Confirm state requirements with securities counsel in the state where the office operates.
An office that fails to maintain the exemption must register as an investment adviser, which brings written policies and procedures, a designated chief compliance officer, periodic regulatory examinations, recordkeeping requirements, and public disclosure through Form ADV. For a family that valued privacy enough to set up a dedicated office, mandatory public filings defeat much of the purpose.
Plan the Tax Treatment of Operating Expenses
How operating expenses get deducted is one of the most consequential structural decisions, and the law changed permanently in 2025. Before 2018, individuals could deduct investment management expenses under Section 212 of the Internal Revenue Code as miscellaneous itemized deductions subject to a 2 percent AGI floor. The Tax Cuts and Jobs Act suspended those deductions from 2018 through 2025, and subsequent legislation made the elimination permanent starting in 2026.
The remaining deduction path runs through Section 162, which allows deductions for ordinary and necessary expenses of a trade or business. Managing your own investments, no matter how actively, has long been held not to be a trade or business. The Tax Court’s decision in Lender Management, LLC v. Commissioner opened a narrow doorway: the court found a family office qualified as a trade or business because it provided investment advisory and financial planning services to dispersed family members, held itself out as an active management entity, owned only a minority interest in the investment vehicles it managed, and received compensation in the form of profits interests.
The practical takeaway: a family office structured to genuinely provide services to family members in a manner resembling a third-party advisory firm may deduct staff salaries, technology, office space, and other operating costs under Section 162. Families that simply pool investments without that service-provider structure have no federal deduction pathway for management expenses. This has to drive structural decisions from the beginning. Involve a tax advisor experienced with family offices before formation, not after the first return is due.
Build the Operational Infrastructure
Bank and Brokerage Accounts
Dedicated accounts separate the office’s operational capital from personal family assets. Financial institutions will run identity verification on all beneficial owners and authorized signers, which requires the EIN, certified copies of the formation documents, and the operating agreement or bylaws. Banks collect this information under federal rules that require the entity’s legal name, identification number, principal place of business, and documentation proving legal existence.5FFIEC BSA/AML Manual. Assessing Compliance with BSA Regulatory Requirements – Customer Identification Program
Technology and Cybersecurity
A family office concentrates extraordinarily sensitive data in one place: net worth details, Social Security numbers, trust documents, estate plans, and real-time investment positions. That makes it an attractive target. The Gramm-Leach-Bliley Act requires financial institutions to develop, implement, and maintain an information security program with administrative, technical, and physical safeguards for customer information. The FTC’s Safeguards Rule, which implements these requirements, also includes a breach notification requirement.6Federal Trade Commission. Gramm-Leach-Bliley Act
Even if a specific family office falls outside the technical definition of a covered financial institution under the GLBA, treating those standards as a floor makes sense. Consolidated reporting platforms, encrypted communications, multi-factor authentication, and access controls that limit data exposure to employees who need it should all be in place before family assets move into the office’s accounts. Vendor contracts should include data security provisions and breach notification commitments.
Staffing
Family office employees typically sign non-disclosure agreements to protect family privacy. Employment agreements should define roles clearly, particularly for investment professionals whose activities could affect the office’s regulatory status. The key employee definition matters here: non-clerical employees who participate in investment activities and have at least twelve months of relevant experience qualify as family clients and can invest through the office. Employees who don’t meet that threshold cannot.
Carry the Right Insurance
Family office executives face liability exposure that mirrors directors and officers of public companies. Poor investment decisions, deviations from the investment policy, errors in estate or tax planning, and employment-related claims can all produce lawsuits from family members or third parties. The informality of a family-run operation does not provide legal protection when something goes wrong.
A sound insurance program typically includes directors and officers liability coverage for the individuals making governance decisions, professional errors and omissions insurance for investment management and planning services, and employment practices liability coverage for staff-related claims including wrongful termination, discrimination, and harassment. Limits and structure should reflect the office’s asset size, headcount, and scope of services.
Handle Foreign Account Reporting if Applicable
If the office holds international investments, two federal reporting obligations overlap and both carry steep penalties.
The FBAR (FinCEN Form 114) applies when the aggregate value of foreign financial accounts exceeds $10,000 at any point in the calendar year. The deadline is April 15 with an automatic six-month extension to October 15. It’s filed electronically through FinCEN’s BSA E-Filing System, not with the tax return. Civil penalties for non-willful violations start at $10,000 per violation, and willful violations can reach the greater of $100,000 or 50 percent of the account balance, with amounts adjusted annually for inflation.7Internal Revenue Service. Comparison of Form 8938 and FBAR Requirements
Form 8938 (Statement of Specified Foreign Financial Assets) is a separate IRS requirement. For a domestic entity like a family office, the filing threshold is $50,000 on the last day of the tax year or $75,000 at any time during the year. It’s filed with the entity’s income tax return. Penalties start at $10,000, with an additional $10,000 for each 30 days of continued noncompliance after IRS notice, up to a maximum of $60,000, and criminal penalties can also apply. Filing one form does not satisfy the other.
Keep Up with Annual Maintenance
Every state requires some form of annual or biennial report to keep the entity in good standing, and most charge a fee. Costs range from nothing in a few states to several hundred dollars. Missing a deadline can bring late fees, administrative dissolution, or loss of good standing, each of which creates problems with banks, counterparties, and regulators.
Beneficial ownership reporting under the Corporate Transparency Act has been narrowed. As of early 2025, FinCEN eliminated the requirement for U.S.-formed companies to report beneficial ownership information. The obligation now applies only to entities formed under foreign law that have registered to do business in a U.S. state or tribal jurisdiction, so a domestically organized family office is exempt.8Financial Crimes Enforcement Network. FinCEN Removes Beneficial Ownership Reporting Requirements for U.S. Companies and U.S. Persons, Sets New Deadlines for Foreign Companies
Beyond government filings, run an annual review of the family office exemption. Changes that seem minor can quietly destroy it: a new non-family investor, a departing key employee who continues to receive advice beyond permitted limits, or a website that could be read as holding the office out as an adviser. An annual audit of the client roster against the regulatory definition of family client is cheap insurance against an expensive registration obligation.
Review the investment policy statement, governance charter, and succession plan on the same schedule. Families change: children become adults, marriages form and dissolve, new businesses launch, and older family members step back. Governance documents that worked five years ago often don’t reflect the current family, and the gap between written policy and actual practice is where conflicts begin.