A family office invests one wealthy family's own money, while a private equity firm invests capital raised from outside limited partners and must return it within a fund's life, typically around ten years. That single difference in capital source drives nearly every other contrast between the two: time horizon, decision speed, check size, and how much control each buyer wants.
If you are a founder, business owner, or fund manager deciding which door to knock on, this guide walks through those differences in practical terms, with data from our database of more than 2,700 active family offices.
The core difference: whose money is at the table
A private equity firm is an intermediary. It raises a fund from limited partners (pension funds, endowments, insurers, and wealthy families), invests that fund over a few years, and works to sell every position before the fund winds down. The standard economics are a management fee of around 2% plus roughly 20% of profits, and a fund life of about ten years, as outlined in Investopedia's overview of private equity.
A family office is the principal. It manages the private wealth of a single family (or a small group of families, in the multi family office model), and the investment capital belongs to the people sitting in the room. There is a fuller definition in our pillar on what a family office is, but for deal purposes the key point is simple: a family office answers to itself.
That difference in accountability shapes everything downstream. A PE partner must justify each deal to an investment committee and, eventually, to LPs who judge the fund on internal rate of return. A family office principal can approve a deal over lunch because it fits the family's goals.
Time horizon: permanent capital vs the fund clock
Private equity runs on a clock. A typical fund invests during years one through five and exits during years four through ten, so every portfolio company arrives with an implied sale date. Holding periods of three to seven years are the norm, because the fund must distribute cash to LPs before it terminates.
Family offices hold permanent capital. Money returned from one investment simply flows into the next, and there is no fund termination date forcing a sale. Many family offices describe themselves as "patient capital" and are comfortable holding a private company for a decade or longer, sometimes across generations. Purdue's Daniels School of Business has described this shift of families doing long-hold direct deals as family offices becoming the "new" private equity.
For an owner selling a business, this is often the most emotionally important difference. A PE buyer will very likely resell your company within a handful of years. A family office buyer can credibly say it intends to own the business indefinitely, keep the team, and preserve the name.
Decision speed and process
Here the comparison cuts both ways.
Private equity firms run standardized, professional processes. Dedicated deal teams, defined diligence checklists, and investment committees that meet on a schedule. The process is predictable, and a firm actively deploying a fund is motivated to move, because uninvested capital drags on returns.
Family offices sit at both extremes. A small single family office where the principal makes decisions personally can commit in weeks, faster than almost any institutional buyer we know of. Other offices move slowly because investing is discretionary: with permanent capital there is no pressure to deploy by a deadline, and a family can simply wait for the deal that feels right. In our database of more than 2,700 active family offices, 74% are single family offices, where this founder-style, conviction-driven decision making is most common.
The practical takeaway for capital raisers: qualify early. Ask a family office how decisions are made, who signs off, and when they last closed a deal like yours. Our guide on how to raise capital from family offices covers the qualifying questions in detail.
Check sizes and deal focus
Private equity checks are sized by the fund. A lower middle market fund might write $10 million to $50 million equity checks; a mega fund writes checks in the billions. Because fees are earned on committed capital, PE firms have a structural incentive to raise larger funds and chase larger deals.
Family office checks are sized by the family's balance sheet and conviction. Typical direct investment checks range from a few hundred thousand dollars for startup rounds to $5 million to $50 million for control acquisitions, and the largest offices (13% of our database are giant family offices tied to 13F filers or billionaire families) can compete with institutional buyers on nine-figure deals.
Family offices also spread across more asset types than a typical buyout firm. In our database of more than 2,700 active family offices, 42% invest in startups, 38% invest in private equity, 28% invest in real estate, and 6% acquire small businesses directly. If your deal is a fund commitment or a co-investment, the offices profiled in our list of USA family offices investing in private equity are the natural starting point.
Control preferences
Most buyout-style private equity firms want majority ownership, board control, and the right to replace management. That is the model: buy control, improve operations, sell at a higher multiple. Even growth equity funds that take minority stakes negotiate strong protective rights.
Family offices span the full spectrum. Some run in-house direct investment teams and buy 100% of companies, operating much like a PE firm with permanent capital. Others prefer minority stakes alongside a founder they trust, and many participate passively as LPs in other managers' funds. The 38% of offices in our database that invest in private equity include both patterns: offices committing to PE funds and offices doing direct and co-invest deals themselves.
A meaningful subset buys operating businesses outright. In our database, 6% of offices acquire small businesses, often targeting profitable companies with $1 million to $10 million of earnings where the family intends to hold long term. We profile these buyers in our post on USA family offices that buy small businesses.
Which one should a founder or owner approach?
Match the counterparty to your goal.
Choose private equity when you want a competitive process, a proven playbook, and the highest headline price for a control sale, and you accept that the business will be resold within several years. PE firms also suit owners who want to roll equity and get a "second bite" at the next sale.
Choose a family office when continuity matters: you want your team protected, your brand preserved, and a buyer with no forced exit. Family offices also fit founders raising minority growth capital who want a patient partner rather than a fund-cycle countdown, and searchers or owners of smaller companies that fall below most PE funds' size thresholds.
Approach both when you are running a structured sale process. Many owners invite family offices into PE-led processes precisely because a credible permanent-capital bidder changes the negotiation.
If you are raising for a startup rather than selling a company, the comparison shifts; see our companion piece on family offices vs venture capital.
FAQ
Is a family office the same as a private equity firm? No. A family office manages one family's own wealth across many asset classes, while a private equity firm manages pooled outside capital in time-limited funds. Some large family offices run internal teams that operate like PE firms, but the capital source and time horizon differ.
Do family offices pay less than private equity buyers? Sometimes, because they avoid competitive auctions and price for a long hold. Owners often accept a modest discount in exchange for continuity, speed, and certainty of close, though well-run processes with multiple bidders can close that gap.
Can a family office invest in private equity funds? Yes, and many do. In our database of more than 2,700 active family offices, 38% invest in private equity, through fund commitments, co-investments, and direct deals.
Sources
- Investopedia: Private Equity Explained
- Purdue Daniels School of Business: Family Offices, the "New" Private Equity
For a working list of family offices with named decision makers, our human-verified database covers more than 2,700 active family offices. Download the free sample or see the Full USA Database.