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Roughly 70% of wealthy families lose their wealth by the second generation. By the third, that figure climbs to 90%.
Those numbers come from a 20-year study of more than 3,200 families conducted by the Williams Group, and they are the empirical backbone of an old piece of wealth-management folklore: shirtsleeves to shirtsleeves in three generations.
The instinctive assumption is that markets do the damage. A bad decade, a concentrated bet gone wrong, a tax bill nobody planned for. It is a comforting explanation, because it makes the loss feel like bad luck.
The data tells a different story. According to the same research, only about 15% of wealth transfer failures trace back to legal, tax, or structural problems. The overwhelming majority — roughly 60% — comes down to a breakdown in communication and trust within the family, with another quarter attributed to heirs who were simply unprepared for what they inherited (Nexia). In other words, the thing most likely to unravel a family’s wealth is not the portfolio. It’s the family.
That distinction sits at the center of a recent episode of Quarter Over Quarter, Moran Wealth Management’s podcast, where advisor Mike Mongin joined Don Drury and Tom Moran to talk through what a family office actually does — and, more importantly, what it can’t do on its own.
The structure is the easy part
When families first explore the idea of a family office, the questions tend to be mechanical. How much does one cost to run? What’s the net-worth threshold that makes it worthwhile? Single-family office, multi-family office, or something in between?
Those are fair questions, and they matter. (We worked through the economics of them in a companion piece, How Much Money Do You Need for a Family Office?) But here’s the uncomfortable truth the numbers above expose: the structure is the part money can solve. You can hire the investment team, license the reporting technology, and stand up the legal entities. None of it addresses the 85% of failure that has nothing to do with structure.
A family office — whether it’s a dedicated single-family operation, a shared multi-family model, or a hybrid that borrows from both — is ultimately a vehicle. It’s very good at coordinating investments, taxes, estate strategy, and philanthropy in one place. What it cannot manufacture is a family that agrees on what the money is for.
What actually breaks wealthy families
The research points to three recurring failure points, and they show up regardless of how sophisticated the financial structure is.
The first is silence. In many affluent households, money is either an off-limits topic or a vague one. Parents avoid the hard conversations — about death, about incapacity, about how much there actually is — until events force the discussion at the worst possible moment. By then, the next generation is making consequential decisions with almost no context.
The second is unprepared heirs. Inheriting significant wealth is a skill set, not just a windfall. Heirs who have never been taught how investments, taxes, trusts, and giving fit together are being handed the controls of an aircraft they’ve never flown.
The third — and smallest — is the structural layer everyone obsesses over: the estate documents, the tax planning, the entity design. It matters enormously, but it’s the piece good advisors and attorneys already know how to build.
The pattern isn’t unique to families managing liquid wealth, either. Operating businesses fare no better across generations, which is why succession has become such a pressing theme in the family office world.
The succession gap nobody plans for
Even among the most organized families — those wealthy enough to have a family office in the first place — the preparation gap is striking. Deloitte’s research found that while roughly 41% of families expect to undergo a generational transition within the next decade, an equal 41% have no succession plan in place at all. Nearly a third of family offices say the next generation is either unprepared (30%) or unqualified (28%) to take over (Deloitte Private, Family Office Insights Series).
That gap is about to be tested at scale. An estimated $84 trillion is expected to change hands between generations through roughly 2045, according to Cerulli Associates — the largest wealth transfer in history. For families without a plan, the statistics on generational loss aren’t a curiosity. They’re a forecast.
Governance, education, and a shared sense of purpose
So what separates the families who beat the odds? The episode keeps returning to three ideas that have nothing to do with asset allocation.
Governance — a clear, agreed-upon way of making decisions before emotions and money collide. Education — deliberately preparing each generation to understand not just how much they’re inheriting, but the responsibility that comes with it. And a shared articulation of what the family stands for — sometimes formalized as a family mission statement — that gives the wealth a purpose beyond its balance.
Warren Buffett’s often-repeated framing captures the tension well: leave your children enough that they can do anything, but not so much that they can do nothing. That balance point is precisely what a well-run governance process is designed to find — and it looks different for every family, which is exactly why a template rarely works.
None of this replaces disciplined investment management, integrated tax and estate planning, or sound structure. Those remain the foundation. But the families whose wealth actually endures tend to be the ones who understood early that the mechanics were only half the job.
The better question
The question isn’t really “Can we afford a family office?” or even “How big does our wealth need to be?” It’s “Is our wealth being coordinated — and is our family being prepared — the way it would take to make this last?”
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