The founder has the lawyers on a standing Friday call. The operating company has a board book. The adult children have a group chat that goes quiet whenever anyone types the word “trust.” That silence is how family wealth conflict arrives in the rooms these surveys describe: not as a lawsuit, as an empty chair.
This page keeps three objects apart. First, disagreement in a United Kingdom ultra-high-net-worth sample. Second, conflict-as-risk in family-office surveys that are not a U.S. census. Third, U.S. evidence that heirs often have little or no input while plans sit unfinished. The promise is modest: after the last heading, a reader can say why BDO’s 90 percent is not an American rate, and which U.S. figure describes the empty chair.
Family wealth conflict is common. The 90 percent is not a world rate.
Independent bank and family-office surveys in 2025 and 2026 report conflict over wealth, next-generation exclusion, or a plan that never leaves the drawer as a regular finding, not a rarity. That pattern is the honest headline. A single percentage is not.
BDO’s 2026 WealthAnalysis work, based on fieldwork from September 2 to September 25, 2025, surveyed 200 ultra-high-net-worth people in the United Kingdom and 100 advisers. The firm’s definition of ultra-high-net-worth in that study was £20 million investable or £50 million total, with a UK connection by residence or family. Ninety percent of those wealthy respondents reported family disagreements over wealth. Ten percent reported none. BDO’s own report put the second figure in a sentence that should travel with the first: “Just 10% of all the wealthy people in our survey said they had no family disagreements over wealth.”
That 90 percent is a UK sample of 200 people answering a wide item—any disagreement over wealth. It is not a census of American families, and the research session that closed on August 18, 2026 did not find a U.S. survey from 2024–2026 that asked the same BDO item and published a percentage.
Other houses measured other objects. Standard Chartered Global Private Bank, reporting on May–June 2025 fieldwork among more than 300 family-office professionals (with a focus outside the United States, and a wealth floor of USD 500 million), said 74 percent had observed a rise in conflict among family members. That is an observed increase, not a 90 percent prevalence. J.P. Morgan Private Bank’s 2026 Global Family Office Report, published February 2, 2026, surveyed 333 family offices in 30 countries with average wealth of USD 1.6 billion. Among offices serving families that own an operating business, 41 percent named internal conflict or misalignment as a top-three risk, against 23 percent among offices without a business.
The construct-by-geography table that keeps the UK 90 percent from becoming a U.S. rate is the unique asset of this page:
| What was asked | Who was asked | Headline figure | Geography |
|---|---|---|---|
| Any disagreement over wealth | 200 UHNW respondents, BDO | 90 percent / 10 percent none | United Kingdom |
| Professionals saw conflict rise | more than 300 family-office professionals | 74 percent | Mostly outside the United States |
| Internal conflict as a top-three office risk | 333 family offices | 41 percent with a business vs 23 percent without | 30 countries |
| Same BDO item, U.S. UHNW sample | — | Not available | United States |
Sources: BDO WealthAnalysis (fieldwork September 2025); Standard Chartered / FT Longitude (2025); J.P. Morgan Private Bank (February 2, 2026). Figures are not stacked into one “world rate.”
They are not arguing about the same thing
A family that reports “disagreement over wealth” is not the same evidence as a family office that ranks internal conflict among its top three risks. A professional who saw conflict increase in 2025 is not a vote on how many families fight. The temptation in wealth media is to average the headlines. Those samples are not commensurate, so the headlines do not add. Different questions, different wealth floors, different geographies, different years.
BDO’s 90 percent is the widest net: any disagreement. J.P. Morgan’s 41 percent and 23 percent are a risk ranking inside the office, split by whether the family still owns a company. Standard Chartered’s 74 percent is a temperature check among professionals, many of them outside the United States. Each figure can be true of its sample. None of them licenses a sentence that “90 percent of wealthy American families are at war.”
Family wealth conflict, used carefully, is a name for that cluster of instruments—not a license to pick the largest percentage and export it. The U.S. reader who wants a number about the chair, not the quarrel, has to wait for the BNY sample below.
Where the heat concentrates: roles, exclusion, spending
Inside BDO’s UK sample, the arguments are not a blob labeled “money.” Among those surveyed, disagreement over how wealth is invested was reported by 53 percent of heirs and 45 percent of principals; spending, 44 percent versus 34 percent; family-business roles, 44 percent; exclusion from decisions, 35 percent; succession, 31 percent.
Bank of America’s 2026 Study of Wealthy Americans, fielded January 8 to February 5, 2026 among 1,431 U.S. respondents with at least USD 3 million, published a separate UHNW cut at USD 25 million and above. In that UHNW group, 36 percent said heirs were very prepared; 61 percent feared an effect on heirs’ motivation; 36 percent do not disclose the full amount of the estate. Those are not BDO’s foci. They are a U.S. picture of readiness and secrecy sitting next to the UK picture of roles and exclusion. They should not be blended into one percentage.
BDO also reported that 28 percent named a lack of clear communication as the primary reason for disagreement. Fidelity’s Center for Family Engagement, writing October 28, 2025 about a 2024 study of 106 UHNW boomers (about USD 20 million), found wealth transfer among the most relevant later-in-life topics and among the least discussed with children; fewer than half had given beneficiaries relevant information; 23 percent were not talking about any later-in-life topic with children. Avoiding the conversation to “keep the peace” is a mechanism those two houses describe. It is not a measured proof that silence causes a lost fortune.
The empty chair
The operational picture is who is in the room. Standard Chartered reported that 84 percent of families in its study agreed next-generation involvement is essential, and a third were dissatisfied with the current level. UBS’s Global Family Office Report 2026, discussed in media on May 28, 2026, found that 27 percent of family offices had an organized process to educate and prepare the next generation; 35 percent had a succession plan for the family office itself; 57 percent had a plan for family-wealth succession. Among offices where the next generation is little involved, UBS cited gaps in financial and governance education; 29 percent cited insufficient education.
The U.S. empty-chair number is not BDO’s 90 percent. BNY Wealth, with The Harris Poll, fielded March 16 to April 1, 2026 a survey of 501 U.S. decision-makers with at least USD 10 million (unweighted). Sixty-eight percent said heirs had little or no input into transfer decisions; 38 percent said heirs had no input. Fifty-three percent said their transfer plans were not complete.
Read that against the UK exclusion focus: 35 percent of BDO respondents named exclusion from decisions as a disagreement. The samples are not pooled. They rhyme. A principal can fund an office, commission a binder, and still leave the rising generation without a vote that the minutes would recognize. Family wealth conflict in that form does not require a shouting match. It requires an empty chair and a calendar that never puts the next generation on it. The same tension sits under the work of raising children with wealth: presence in the room is not the same as a funded account.
That is family wealth conflict as an empty chair: the next generation named as essential, then left without a process, without input, or without the size of the estate. It is a different sentence from “nine in ten British ultra-wealthy households report a disagreement.” Both can be reported. Only one is a U.S. sample on who sits at the table.
A plan that exists on paper
BDO found that 30 percent of its UHNW respondents had a succession plan that was fully developed and implemented; 60 percent said they had a written plan; half of those who had a plan admitted it was not implemented. Thirty-four percent expected the transition to land a decade or more out. Richard Montague, private wealth partner at BDO, stated the operational test: “A succession plan only exists when it’s actively communicated, tested and followed through.”
In the United States, Bank of America reported that 78 percent of business owners in its wealthy sample said succession is important, and 20 percent had a fully documented plan; family conversations were 25 percent of owners’ top estate-planning challenges. J.P. Morgan reported that 86 percent of family offices in its 2026 sample lacked a clear succession plan for key decision makers—an office-continuity item, not the same object as BDO’s family plan. BNY’s 53 percent incomplete plans sit in the same year as BofA’s 20 percent fully documented. They still do not add into one “implementation rate.”
Family wealth conflict does not pause while the binder is labeled final. The gap is easy to miss because every firm uses the word “plan.” One house means a family document that has been tested. Another means owners who say succession matters. Another means the office’s own leadership bench. A fourth means a transfer file the principals admit is unfinished. Treating those as one staircase—“we are at 30 percent globally”—is the same error as stacking the conflict percentages.
A construct table for plans would mislead if the bars were drawn as if they shared a numerator. The honest display is labeled objects: implemented family plan (BDO 30 percent), fully documented owner plan (BofA 20 percent), family-wealth succession plan at the office (UBS 57 percent), family-office succession (UBS 35 percent), missing key-decision-maker plan (JPM 86 percent).
Do not recycle the 70 percent rule
Wealth folklore still reaches for a round failure rate: 70 percent of transitions fail, or 90 percent by the third generation. That story is the folklore version of the three-generation wealth problem. James Grubman, writing in the International Family Offices Journal in June 2022, argued that the popular 70 percent rule associated with Williams and Preisser is not supported, and traced the citation trail toward John Ward’s 1987 work on family-business continuity. That critique is documentary. It is also older than the 24-month research window; it is used here as a hygiene warning, not as a 2026 census.
A 2003 book, Preparing Heirs, is often the vehicle for a related claim that most failed transitions come from broken trust and communication. The research session did not read that book. A campus summary of it exists; that is not the same as verifying the original sample. This page does not recycle a 60 percent communication-failure statistic from a volume that was not opened. BDO’s 28 percent on communication as a reason for disagreement is a different question in a different decade.
What the surveys can and cannot claim
Cerulli Associates, in a December 5, 2024 release, projected USD 124 trillion in wealth transferring through 2048 (USD 105 trillion to heirs, USD 18 trillion to charity). That figure is a projection. The same release said 89 percent of high-net-worth firms in a 2024 survey cited family meetings and a communication cadence as a best practice. A best-practice citation is not a randomized test that meetings reduce rupture. Offices that already keep a family governance calendar still have to ask who is actually in the room.
J.P. Morgan’s split—more internal-conflict fear where there is an operating company, and more formal governance in those same families—does not prove that a constitution causes peace. This corpus does not include a study that measures whether a constitution or council reduces rupture. How to draft a charter is a separate page: how to write a family constitution.
Family wealth conflict, in the 2025–2026 samples that can be named, is ordinary. The failure the numbers can support is not that families argue. It is that the next generation is often out of the room and the plan is often on paper. The British 90 percent remains a British 90 percent.
Family wealth conflict remains a survey finding, not a diagnosis. The empty chair is still empty if the minutes look tidy. A reader who can keep the UK 90 percent in the United Kingdom, and who can name the U.S. BNY finding on heir input, has what this page promised. A reader who wants a protocol that “fixes” families will not find one here: the corpus does not show that a charter causes less rupture, and this publication does not prescribe counsel, mediation, or a product. This article is for general information and does not constitute legal, tax, investment, or other professional advice. Review the underlying surveys no later than November 16, 2026.