If you Google or ask Claude "who needs a family office?" you'll find a wide range of net worth figures: $5 million, $30 million, $50 million, $250 million. Each one comes from a legitimate source and is defensible on its own terms, but none of them, on their own, answers the question well.
Net worth is a proxy for complexity, but it’s not a measure of it. A family with $80 million spread across a diversified investment portfolio and one trust has a very different operating reality than a family with $40 million tied up in twelve LLCs, three generations of beneficiaries, and an operating business. The first family may be well served by a strong wealth advisor and a good CPA, while the second is already running a family office in practice — they just haven't yet built the infrastructure to support it.
This is the question worth answering before the net worth question: what, specifically, are you managing?
What the published thresholds actually say
The numbers you'll find aren't wrong, but they're measuring different things. Charles Schwab notes that most multi-family offices set a minimum net worth of around $30 million. FINTRX uses $50 million as its baseline for what counts as a family office on its data platform, while acknowledging that the majority of the offices it tracks manage well over $100 million.
Asena Advisors puts the practical floor for a single-family office at roughly $50 million, and other advisory sources place the point where families typically formalize a dedicated office between $100 million and $500 million, depending on how much of that wealth sits in operating businesses or illiquid assets rather than a diversified portfolio.
Operating cost estimates vary just as widely. JPMorgan's 2024 Global Family Office Report puts annual single-family office costs between $1 million and $10 million, and Campden Wealth's 2024 research shows average operating costs scaling from roughly $1.8 million a year for offices under $500 million in assets to $8.7 million for those managing over $1 billion.
Read across these sources, and you’ll notice that none of them define a family office by net worth alone. Instead, they define it by the cost of running dedicated infrastructure, and that cost is driven by the number of moving parts.
The real question: what are you managing, not what you're worth
A more useful diagnostic looks at operational complexity directly. The following signals matter more than net worth in determining whether a dedicated structure earns its cost:
1. Number of legal entities. One or two entities can usually be handled by a competent CPA firm on standard accounting software. Once a family is managing five, 10, or 20 entities, including things like trusts, LLCs, holding companies, operating businesses — all with their own books, ownership percentages, and intercompany activity — the coordination burden alone starts to justify dedicated resources.
2. Cross-entity and intercompany transactions. Families with a handful of static holding entities have simple books. Families that regularly move cash, allocate expenses, or book inter-entity loans across entities need a system built to track that activity accurately, and a collection of separate QuickBooks files reconciled by hand at quarter-end is not going to cut it.
3. Multi-generational involvement. Wealth held by one generation with a straightforward estate plan is a different problem from wealth shared among parents, adult children, and trusts for grandchildren, each with distinct reporting needs, tax situations, and decision rights.
4. Share of illiquid and alternative investments. A portfolio of publicly traded securities and a rental property or two can be reported by most wealth advisors. When there’s a portfolio heavy in private equity, direct investments, real estate held across multiple entities, or an operating business requires accounting and reporting infrastructure, generalist tools are not built for that.
5. Recent or anticipated liquidity event. Selling an operating business creates a temporary spike in complexity that can look like a permanent need for a family office when it's actually just a transition period. The odds are that it will settle down within a year or two, so it’s not actually necessary.
6. Staffing and continuity needs. If the family already relies on staff like a bookkeeper, controller, principal, CFO, analyst, or others to keep things running, and that person's departure would create real risk, that means the operation has grown too big for ad hoc support.
Families that score high on several of these dimensions are managing family-office-level complexity, whatever their net worth number says on paper. Families that score low on most of them, even at higher net worth, are often better served by outsourcing to an advisor, a multi-family office, or a strong CPA relationship.
When a dedicated structure is overkill
Not every family with significant wealth needs to build a family office, and treating $5 million or $10 million in investable assets as an automatic trigger does families a disservice. If your structure consists of one or two entities, your investments are mostly liquid and diversified, and your reporting needs are annual tax preparation and periodic performance reviews, a dedicated office is a cost center with no operational payoff. A good CPA firm and a wealth advisor will cover that need for a fraction of the cost.
The same is often true immediately after a liquidity event. It's tempting to build out a full office in response to a sudden increase in wealth, but the more common pattern is a period of elevated complexity, like closing out the sale, restructuring entities, doing initial tax and estate planning, etc. That settles into something much simpler within roughly a year or two, so it’s recommended that you wait for the dust to settle before making a permanent infrastructure decision.
The middle path most families need
Between "outsource everything" and "build a full single-family office" sits a large group of families who need accounting infrastructure but without the big staff operation. This is where most of the growth in the space is happening — families and small teams managing a handful of entities who have outgrown spreadsheets and separate QuickBooks files but aren't ready for (or don't need) a fully staffed office.
For this group, the right move is usually to put proper multi-entity accounting infrastructure in place before the entity count and intercompany activity outgrow what manual processes can handle. A general ledger built to manage multiple entities, apply correct ownership percentages, and consolidate reporting lets a lean team, even a single accountant or controller, operate at a level that would otherwise require a much larger staff.
SumIt’s single-family office platform was built for this exactly, and many SumIt clients are families with genuine entity complexity who need the reporting rigor of a family office without the overhead.
A practical way to self-assess
Before deciding whether to formalize a dedicated structure, it's worth walking through a short set of questions:
How many legal entities are you currently managing, and is that number growing?
Do you have regular intercompany transactions that require manual reconciliation?
Are more than one or two generations actively involved in decisions or reporting?
What share of your assets are illiquid or alternative, versus liquid and diversified?
If your current bookkeeper or controller left tomorrow, how much operational risk would that create?
Are your current accounting tools built for multi-entity structures, or are you piecing together spreadsheets and separate files?
If most of your answers point toward growing complexity, the conversation isn't "do I need a family office,” but "what infrastructure do I need to support the office I'm already effectively running?" That's a narrower, more answerable question, and it's the one we recommend you solve first.
SumIt builds multi-entity accounting software for single and multi-family offices managing exactly this kind of complexity. If you're evaluating whether your current setup can scale with your entity structure, see how SumIt handles multi-entity consolidation.
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