Preparing the heirs, not just the estate: the real work of multi-generational wealth

There is an old saying, found in almost every culture, that wealth goes from shirtsleeves to shirtsleeves in three generations. It turns out to be roughly true. A long-running study by the Williams Group, which followed more than 3,000 families over a quarter of a century, found that 70% of affluent families lose their wealth by the second generation, and 90% by the third.

What makes the finding so striking is the cause. When the same researchers asked why the wealth disappeared, the answer was not bad investments or bad markets. In around 60% of cases, the culprit was a breakdown of communication and trust within the family. A further quarter came down to heirs who were simply unprepared, lacking the knowledge and skills to manage what they inherited. Barely a tenth had anything to do with poor financial advice, taxes or markets.

The data on readiness is sobering and consistent. Surveys repeatedly find that only around half of heirs feel genuinely prepared to receive an inheritance, that barely a third of wealthy parents believe their children are ready, and that a large majority of wealth-holders have never given their heirs meaningful guidance about the wealth they will one day hold. The money is being transferred. The understanding, too often, is not.

This is the quiet crisis behind the headline figures of the Great Wealth Transfer. Tens of trillions will pass to a generation that, by its own account, does not feel ready to steward it, from a generation that has largely not prepared them. No estate plan, however elegant, fixes a family that has never learned to make decisions together.

Preparing heirs is less about teaching investment mechanics and more about building judgement and shared understanding over time. The families that beat the odds tend to do a few things deliberately. They talk about money earlier and more openly than feels comfortable. They involve the next generation in real decisions before they hold the assets, so the first time an heir sees how the family invests is not the day they inherit. And they treat financial education as a years-long process, not a single briefing delivered alongside the will.

Light structures help that work endure. A short family charter or constitution records the purpose of the wealth and the principles that govern it, so the next generation inherits intentions and not just assets. A family council, meeting on a regular rhythm, gives heirs a seat and a voice before they hold control. And a documented investment policy gives the family a concrete, shared object to discuss, turning abstract values into specific constraints everyone can see and question.

For the adviser, this reframes the role entirely. The deliverable is not only a well-run portfolio; it is a family equipped to hold it. Every artefact that makes the reasoning legible, a written policy, comparable scenarios, a record of what was decided and why, doubles as a teaching tool for the people who will inherit. The work that defends a recommendation to a regulator is the same work that prepares an heir to carry it forward.

If there is a single lesson from the families who beat the odds, it is that they start the conversation early, often earlier than feels natural. Waiting until heirs are in middle age, or until illness forces the issue, compresses decades of needed learning into a rushed handover. Beginning while children are young, with age-appropriate openness about what the family has, how it thinks about money, and what it expects, gives understanding the years it needs to take root.

Philanthropy is one of the most effective teachers here. Giving the next generation a real, if modest, role in the family's charitable decisions lets them practise stewardship with lower stakes: they learn to weigh options, to disagree productively, and to make decisions together, all before they are responsible for the core wealth. Many families find that the habits formed around the giving table are exactly the ones needed around the investment table later.

The estate can be planned in an afternoon with a good lawyer. Preparing the heirs is the harder, slower task, and it is the one that actually decides whether the wealth, and the family, make it to the fourth generation.

For the family itself, the reward for this work is not only financial. The families that prepare their heirs tend to be closer, not merely richer: they have learned to talk about difficult things, to disagree without rupture, and to share a sense of purpose that outlasts any single member. The wealth is the occasion for that work, but the cohesion it builds is the deeper inheritance, and the one most likely to carry the family through the generations the statistics say it should not survive.

Sources: Williams Group (2002, 3,250 families); RBC Wealth Management; U.S. Trust; Cerulli Associates (2025).