Legal Entities a Family Office Uses

Why a Family Office Uses Multiple Entities, Not One

When people picture a family office, they sometimes imagine a single company that does everything. In practice, the organizational layer is almost always a stack of separate legal entities, each serving a distinct purpose. One entity might employ staff and pay bills. Another might hold a portfolio of real estate. A third might be the vehicle through which the family invests in a private deal.

This separation is intentional. Different entities provide different protections, ownership rights, and governance features. They also allow a family to route income, expenses, and assets in ways that match their overall plan — though any specific design decisions must be made with qualified attorneys and CPAs, never from a general guide like this one.

The page on organizational structure covers how a family office is organized at a high level. This page goes one layer deeper, into the entity toolbox itself.

The Management Company

The management company is usually the operational core of the family office. It is the entity that signs employment contracts, leases office space, pays vendors, and carries the day-to-day administrative functions. Families commonly structure this as a limited liability company (LLC) or, less frequently, a corporation.

An LLC is a legal structure that combines the liability protection of a corporation with a more flexible ownership and governance arrangement. The owners of an LLC are called members, and the rules governing the company are written in an operating agreement — a private document that spells out who controls the entity, how decisions are made, and how money flows in and out.

The management company typically does not own the family's investments directly. Mixing operational activity (payroll, contracts, vendor relationships) with investment assets would expose those assets to claims against the operating entity. Keeping them separate is a fundamental reason for the multi-entity structure in the first place.

Holding Companies and Property LLCs

A holding company is an entity whose primary purpose is to own interests in other entities or assets, rather than to operate a business directly. Families commonly place investment portfolios, real estate, or interests in operating businesses inside one or more holding companies.

Real estate holdings often get their own dedicated LLCs — sometimes called property LLCs. Placing each property (or a logical group of properties) in its own LLC means that a liability arising from one property is, in principle, contained within that entity and does not automatically reach the others. The guide on family LLCs and family limited partnerships covers this structure in more depth.

Some states permit a series LLC — a single LLC that can contain legally separate "series," each with its own assets and liabilities. This can simplify administration when a family holds many properties or investments, though the legal treatment of series LLCs varies significantly by jurisdiction. Families considering this structure must consult counsel familiar with the applicable state law.

GP/LP Structures: The Family Limited Partnership

A limited partnership (LP) has two types of owners. The general partner (GP) controls and manages the partnership. The limited partners (LPs) contribute capital and share in the economics but have limited management rights and, importantly, limited liability.

A family limited partnership (FLP) applies this structure to family wealth. A senior family member or an entity they control often serves as the GP, retaining decision-making authority. Other family members — including the next generation — hold LP interests. This arrangement is commonly used for centralized investment management, business succession, and estate planning purposes, though the specific benefits depend entirely on how the structure is implemented and the applicable law. Attorneys and CPAs must be involved in any FLP design.

Often, the GP itself is an LLC — sometimes called a "GP LLC" or "managing member LLC" — rather than an individual. This adds another layer of liability protection for the people who control the partnership. The result is a two-entity stack: an LLC that acts as GP, sitting above the LP that holds assets.

Special Purpose Vehicles for Individual Deals

A special purpose vehicle (SPV) is a legal entity — most often an LLC — created for a single, defined purpose, typically to make one investment or hold one asset. When a family participates in a co-investment alongside a private equity fund, or leads a club deal with other families, an SPV is frequently the vehicle through which capital is committed and returns are received.

Using an SPV keeps one deal legally and financially separate from all others. If the investment fails, the loss is contained within the SPV. It also makes accounting cleaner: the family's consolidated reporting can show each investment as its own line item with its own capital account.

SPVs also appear on the other side of the table. When a family's operating company raises capital from outside investors, the family office might create an SPV to aggregate the family's investment so that a single entity — rather than a dozen individual family members — appears on the capitalization table.

Trusts as Owners in the Entity Stack

A trust is a legal arrangement in which a grantor transfers assets to a trustee, who holds and manages them for the benefit of named beneficiaries. Trusts are not operating companies — they are ownership vehicles and estate planning tools. But they frequently appear as owners of the entities described above.

For example, a family might establish an irrevocable trust that holds LP interests in the family limited partnership. The trust — not an individual family member — is the LP. This arrangement can have estate planning implications, particularly around estate tax and wealth transfer, which is exactly why qualified estate planning attorneys must design any structure involving trusts. The plain-English guide to trusts is a good starting point for understanding the vocabulary.

A dynasty trust is designed to hold assets across multiple generations without those assets being included in each generation's taxable estate. Families sometimes park their LLC or LP interests inside a dynasty trust precisely for this reason. A trust protector — an independent third party with defined powers to modify the trust — is sometimes added to keep a long-lived trust adaptable as laws and family circumstances change.

How the Ownership, Management, and Estate Layers Connect

The table below illustrates how these entities typically relate to one another in a layered family office structure. This is an illustrative example — real structures vary widely based on family circumstances, jurisdiction, and professional advice.

Each entity files its own legal documents, may require its own bank accounts, and generates its own tax records — often including a Schedule K-1 for pass-through income reported to owners. This is one reason family office accounting becomes complex quickly: a single family may have a dozen or more entities, all of which need to be reconciled into one coherent picture of family wealth.

The entity layer also intersects directly with the governance layer. Who controls the GP LLC? Who can amend the operating agreement? Who serves as trustee? These are governance questions that happen to have legal-entity answers. Families building this infrastructure for the first time are strongly encouraged to engage both legal counsel and a CPA before forming any entity — the sequencing and design of these structures can have lasting consequences that are difficult and expensive to undo.