Legacy: Inheritance, Heirs, and Family Continuity
The Million Dollar Question: According to the widely cited Williams Group twenty-year study of 3,200 wealthy families, what share of family wealth is gone by the end of the third generation?
A) 30% B) 50% C) 70% D) 90%
Read on for the answer.
The standard image of “leaving a legacy” is a will, a number, and a few grandchildren. The real picture in 2026 is structural: a roughly $124 trillion intergenerational transfer is now underway in the United States, the federal estate-tax exemption was just made permanent at $15 million per person, and the families that actually keep their wealth across three or four generations look a lot less like the people writing the will and a lot more like the people who built the institution that keeps it standing. The piece that follows is about that distinction — the difference between transferring money and transferring continuity.
What it is
“Legacy” and “inheritance” are not the same thing, and conflating them is one reason most family wealth does not survive long. Inheritance is the money event — the transfer of assets at a death or, increasingly, during life. Legacy is the durable thing that surrounds the money — the family’s values, structures, name, governance, and identity. This piece is about the second; the mechanics of the transfer itself are the subject of Inheritance: The Transfer of Wealth Between Generations.
A working definition of legacy in the UHNW context has four components.
Legal vehicles. The contracts that hold and move the wealth — the will, the revocable trust, the irrevocable trust, the dynasty trust, the family limited partnership or family LLC, the private foundation, and the donor-advised fund. These are the machinery layer. They do not, on their own, preserve anything.
Governance. The rules and meetings by which the family decides what happens. The annual family meeting, the family council (smaller, elected, with authority to act between meetings), the family constitution (a written statement of values and rules), and the family office that staffs the whole structure. This is the institutional layer.
Preparation. The deliberate development of the next generation as stewards of the wealth. Financial literacy curricula, family bank lending programs, mentorship within the family office, internships, board observerships, and increasingly formal next-generation retreats. This is the people layer.
Identity. The softest layer and the easiest to dismiss — the family’s name, its philanthropic identity, its public posture, and the shared narrative the family tells itself about who it is and what it stands for. This is the layer that lets the other three actually hold.
A family with the legal vehicles but no governance, preparation, or identity is the modal failure mode of American wealth dissipation. The Vanderbilts are the canonical case, and they get their section below.
Who uses it
The components scale with wealth, and the right answer at each band looks different.
$1M–$5M. A will, beneficiary designations on retirement accounts and life insurance, and a basic durable power of attorney covers most of what is needed. A revocable trust is sometimes used to avoid probate, particularly in California or Florida where probate is slow and public, but the overwhelming majority of families at this band do their estate planning through a will. Total legal cost in the low thousands, not the tens of thousands.
$5M–$30M. The first band where serious trust planning becomes routine. Revocable trusts are standard, irrevocable life-insurance trusts (ILITs) common, and grantor-retained annuity trusts (GRATs) and spousal lifetime access trusts (SLATs) start to appear. A family LLC or limited partnership is sometimes formed for real estate or a closely held business interest. Heir preparation at this band is largely informal — kitchen-table conversations rather than a curriculum.
$30M–$100M. Where dynasty trusts, family-bank structures, and serious governance machinery typically begin. Many families at this level formalize an annual family meeting and put a written set of expectations in place. The family office is often shared with two or three other families — a multi-family office relationship — rather than a dedicated single-family office, but the office is the institutional home for governance documentation.
$100M+. The full stack. Permanent dynasty trusts, often domiciled in South Dakota, Delaware, or Nevada for their favorable rule-against-perpetuities laws and trust-asset privacy. A single-family office runs the operations. A family council meets formally, often quarterly. A written family constitution articulates values and dispute-resolution rules. An annual two-to-three-day family retreat brings extended members together. The private foundation, if there is one, has its own board and staff.
$1B+. Institutional in scale. Dedicated continuity teams, multi-jurisdictional trust structures, a foundation with its own brand and program officers, often a dedicated next-generation development function with curriculum, mentors, and a multi-year program. The model has more in common with managing a small endowment than with managing a personal fortune, which is the recurring observation in the UBS Global Family Office Report 2025, which surveyed 317 single-family offices with an average net worth of $2.7 billion.
The honest pattern: the legal vehicles scale fastest, the governance layer scales next, and the preparation layer is the last one most families build out — which is also the layer that does the most work.
Why they use it
The motives are mostly rational and mostly visible.
Tax efficiency is the loudest stated driver. The UBS report found that for families that do have succession plans, almost two-thirds (64%) named tax-efficient transfer as the greatest challenge. With the federal estate-tax rate at 40% on assets above the exemption, and the exemption now permanently set at $15 million per individual ($30 million per married couple) under the One Big Beautiful Bill Act of 2025, the band of wealth where serious planning is worth its setup cost begins around $20M for an individual or $40M for a couple. Above that line, doing nothing has a measurable price.
Avoiding the wealth-dissipation pattern. The widely cited Williams Group twenty-year study of 3,200 wealthy families found that around 70% lose their wealth by the second generation and roughly 90% lose it by the third. The figure is the most-repeated statistic in the wealth-management industry, and it is also the most-qualified — researcher James Grubman, who is sympathetic to the underlying point, has argued in The International Family Offices Journal that the original methodology is thinly documented and that the “70/90” framing is best read as a directional warning rather than a measured statistic. Even with that caveat, the historical pattern is real: the Vanderbilt fortune, roughly $200 billion in today’s dollars at its peak, had effectively vanished by the third generation; at a 1973 family reunion of approximately 120 Vanderbilt descendants, not a single one was a millionaire.
Complexity. A $50M+ household has too many moving parts to leave to a will. Multiple homes, operating businesses, private-investment partnerships, illiquid alternative assets, foreign accounts, intellectual property, and named beneficiaries on dozens of accounts mean a plain will is a documentation problem long before it is a tax problem. The trust structures exist as much to consolidate the operational picture as to defer tax.
Conflict prevention. The largest single cause of family-wealth dissipation in the Williams Group findings, accounting for around 60% of failed transitions, was a breakdown in communication and trust within the family — not bad investments, not tax mistakes. The governance layer exists in significant part because clear rules, written down in advance, are the cheapest insurance against the disputes that show up the moment a parent dies or a business is sold.
Identity and continuity. The least transactional driver and often the most important to the founder. Many founders care about being remembered as someone whose generosity, restraint, or values outlived them — not as someone whose grandchildren spent the money on yachts. The foundation, the family scholarship, the family business kept in the family, the named building, and the family constitution all serve this motive.
How it works
Three layers, built bottom to top.
The legal stack.
- Will and beneficiary designations. The default layer. Names beneficiaries for accounts that don’t pass through probate (retirement accounts, life-insurance proceeds) and directs the residue of the estate.
- Revocable trust. A pass-through, used mainly to avoid probate and provide for incapacity. No tax benefit, but operationally cleaner.
- Irrevocable trust. A gift to the trust, removed from the grantor’s estate. The trade is loss of control in exchange for the assets growing outside the taxable estate.
- Dynasty trust. An irrevocable trust designed to last multiple generations without triggering estate tax or generation-skipping transfer (GST) tax at each generational boundary. Domiciled in a state — South Dakota was the first, in 1983, to abolish the rule against perpetuities, followed by Delaware, Nevada, Alaska, Tennessee, New Hampshire, and others — that allows trusts to continue indefinitely. The GST exemption, now also $15 million per person under the OBBBA, can be allocated to a dynasty trust to shield growth from the 40% GST tax across multiple generations.
- Family limited partnership or family LLC. A vehicle for holding a closely held business or a real-estate portfolio, with senior-generation control retained through general-partner or manager interests while limited-partner or non-managing-member interests are gifted to heirs or trusts at valuation discounts.
- Private foundation or donor-advised fund. The charitable layer — a private foundation for families that want a board, programmatic giving, and named identity; a donor-advised fund for families that want the deduction and the flexibility without the operational overhead.
The governance stack.
- Annual family meeting. The minimum unit. One day, usually offsite, with an agenda covering financial position, year-ahead plans, and family business. Often expanded over time into a two-to-three-day retreat.
- Family council. A smaller elected body — three to seven members — with authority to make decisions between meetings. Common above $100M.
- Family constitution. A written statement of values and rules: who can join the family office payroll, what the trust distribution policy is, how disputes get resolved, and what philanthropic commitments are non-negotiable. The Pritzker family, owners of the Hyatt hotel group, are widely reported to operate under a detailed family constitution; the Rockefellers operate under a less-formal but equivalent set of practices anchored by the Rockefeller Family Council.
- Family office. The institutional home — staff, systems, and reporting cadences that turn governance from a once-a-year gathering into a continuous function. See Family Office: How the Very Rich Organize Their Lives and Money for the full architecture.
The preparation stack.
- Financial literacy curriculum. Most multi-family offices and some single-family offices run a structured curriculum for heirs from roughly age 14 onward — accounts, budgeting, basic investing, then trust mechanics, then taxes.
- Family bank. A pool of capital, often within an existing trust, that lends to heirs for documented purposes — education, a business venture, a first home. Cresset and others now describe the family bank as a standard tool for keeping heirs financially literate by requiring them to apply, present a plan, and repay or report on the use of capital.
- Internships and board observerships. Structured exposure to the operating businesses, the family office, and the foundation. Heirs sit in on quarterly investment-committee meetings as observers before they vote.
- Next-generation retreats. Annual or semi-annual gatherings for the rising generation, often hosted by the family office or a wealth-management firm running a next-generation program, with curriculum, peer networks, and access to senior advisors.
The architecture matters less than this single observation: the legal vehicles alone do almost nothing if the governance and preparation layers are missing.
What it costs
In 2026 US dollars, by wealth band, all numbers approximate and varying widely with complexity.
$1M–$5M. A drafted will, basic trust if needed, durable powers of attorney, and healthcare directives. $1,500–$5,000 in legal fees, occasionally more for blended families or out-of-state real estate.
$5M–$30M. A revocable trust, ILIT, possibly a SLAT or GRAT, and a family LLC for real estate. $5,000–$25,000 in initial drafting, plus a few thousand a year in trustee fees if an institutional trustee is engaged.
$30M–$100M. Dynasty trust planning, valuation work for closely held businesses or partnership interests, a private foundation if there is a charitable program, and a family-bank structure. Initial planning $25,000–$100,000; ongoing trustee fees in the 0.5%–1.5% of trust assets range per year for institutional trustees; foundation administration $10,000–$50,000 a year for small ones. Governance machinery — annual meetings, retreats, council facilitation — often $50,000–$150,000 a year if outsourced, absorbed into family-office overhead if the office is in place.
$100M+. Multi-vehicle structures, often involving multiple dynasty trusts in different jurisdictions, a private foundation with paid staff, and an integrated family-office governance program. Initial structuring $250,000–$1 million plus; ongoing trustee, accounting, and tax-reporting fees $500,000–$2 million a year, most of it folded into the family office. A serious annual family retreat, including facilitator, venue, and travel for an extended family, $50,000–$250,000.
$1B+. Institutional scale. The continuity infrastructure is a meaningful line item in the family-office budget — typically a low- to mid-single-digit percentage of office costs, which themselves run in the 0.35%–0.44% of AUM range that UBS reports for the surveyed family offices. For a $5 billion family office, that is several million a year just on the continuity layer — trustee fees, governance staff, education programs, foundation administration, and outside legal and tax counsel.
The cost of doing nothing is also worth quoting. A married couple with $100 million in assets and no planning, dying in 2026, would expose roughly $70 million to the 40% federal estate tax — a tax bill on the order of $28 million, plus state-level estate or inheritance tax in the dozen-plus states that still impose one. The planning fees, even at the upper end, are an order of magnitude smaller.
Hidden costs and tradeoffs
The first hidden cost is loss of control. Irrevocable means irrevocable. Once assets are gifted into a dynasty trust, they belong to the trust; the grantor cannot pull them back. For founders, this is psychologically harder than the brochures suggest, and it is the most common reason planning gets delayed past the point at which it is worth doing.
The second is intra-family conflict. Unequal treatment in a written plan — typical, because heirs differ in needs, capacities, and proximity to the family business — creates resentment that the planning was supposed to prevent. The structure may be optimal; the family experience may be worse, not better. Family governance exists in part to surface and channel this conflict before it explodes at a funeral.
The third is moral hazard. Heirs who know they are protected by a dynasty trust occasionally behave like heirs who know they are protected by a dynasty trust. The literature on this is anecdotal but consistent — the very security the trust provides reduces the motivation to develop the financial habits that would have justified the trust in the first place. Family-bank structures and conditional distribution clauses (“matching” the heir’s earned income, for instance) exist to push against this.
The fourth is the brittleness of a family constitution that ages poorly. Rules written by a founder in 1985 may not fit the family of 2026 — different family sizes, different career patterns, different relationships to wealth. Constitutions that cannot be amended fail. Constitutions that are amended too easily fail in a different way. The Pritzkers, whose constitution survived a bruising 2000s family lawsuit that split the family enterprise, are an instructive case study in how much the document depends on how it is maintained.
The fifth is the trustee selection problem. Institutional trustees — bank trust departments and trust companies — are conservative, slow, and expensive. Family-member trustees create their own conflicts and are typically not equipped to run a multi-jurisdictional structure. The compromise that increasingly wins is a directed trust (the trustee follows directions from an investment committee that includes family members and their advisors), but it introduces its own coordination cost.
The sixth is foundation drift. The charitable identity the founder wanted may not survive five generations of philanthropy committees. Foundations that don’t structure their mission carefully end up funding whatever the current trustees personally care about, which is rarely what the founder intended.
The seventh is the privacy cost. A formal governance machinery — councils, constitutions, retreats, foundations — leaves a paper trail. Some of that trail is discoverable in litigation, divorce, or tax disputes. The privacy logic of Privacy: Why the Wealthy Value Invisibility cuts against the governance logic, and most families end up doing both imperfectly.
What people get wrong
Five corrections worth making.
Equal division is not the same as fair planning. The Vanderbilt mistake was splitting the principal across heirs who weren’t prepared and didn’t share the founder’s commitment to keeping the assets working. Cornelius Vanderbilt’s son Billy made the rational-looking choice to divide his inheritance among his sons; the practical consequence was that no single heir had enough to maintain the family’s earning power, and the heirs who had the most were the ones least disciplined about preserving it. The Rockefeller architecture took a different approach — the principal lives inside a trust, the income flows to heirs, and the heirs are explicitly taught not to touch the capital. Six generations later, the family is still estimated at around $10 billion in collective wealth across roughly 170 heirs.
Legal vehicles are the floor, not the ceiling. A dynasty trust without a governance layer and without prepared heirs is a beautifully engineered vehicle parked in front of a family that has no driving lessons. The structures do not preserve wealth on their own; they preserve assets while the family does or doesn’t develop the practices that determine whether those assets continue producing income three generations from now.
The “70/90” statistic is a directional warning, not a measured fact. As James Grubman has noted, the original Williams Group methodology is hard to audit and the precise share that “lose” wealth depends sharply on how loss is defined. The underlying pattern — that family wealth without governance and preparation tends to dissipate over generations — is well-supported historically. The exact figures should not be treated as if they were measured to the percentage point.
The next generation should be involved from the outset. The UBS report found that only 26% of surveyed family offices consult the next generation about the succession plan from the beginning, with more than a third (36%) bringing them in only after speaking to the first generation, and another large share excluding them entirely. The pattern is consistent with the data on what predicts successful transitions: heirs who understand the plan, who feel ownership of its values, and who have been prepared for the responsibilities it implies do meaningfully better than heirs who learn about the plan when a parent dies. The mistake is treating succession as a one-direction handoff rather than a multi-year preparation.
Continuity is a function of governance and preparation, not money. The families that survive past the third generation are not the ones with the largest fortunes. They are the ones with the most disciplined institutional layer — meeting rhythm, written rules, heir preparation, identity. Money, by itself, is fragile. Institutions outlast individuals; that is more or less the whole insight of the dynasty model.
Bottom line
About 90% gone by the third generation — and roughly 70% gone by the second — per the long-cited Williams Group findings, with the honest qualifier that the exact figures are directional and the underlying pattern is what matters. The lesson the statistic points to is the one the rest of the piece has been about: legacy is not the money, it is the soft layer — values, governance, preparation, identity — that lets the hard layer of trusts, LLCs, and foundations actually function. The Rockefellers and the Vanderbilts started with comparable fortunes; one family runs a council and a dynasty trust six generations on, the other split the principal across unprepared heirs and was effectively done by the third. The difference was not money, lawyers, or tax planning. It was governance — written down, practiced annually, taught to children, and trusted enough that the family kept doing it after the founder was gone. That is what continuity actually looks like.
Related reading: Family Office: How the Very Rich Organize Their Lives and Money · Money Management: From Wealth Manager to Family Office · Taxes: How Wealth Is Structured and Preserved · Wealth Levels: Life at $1M, $10M, $100M, and $1B · HENRY: $500K and Still Paycheck-to-Paycheck
