For Thai high-net-worth (HNW) families, wealth structuring is no longer a narrow technical exercise focused only on offshore assets or end-of-life planning. As capital moves across borders, younger family members study and work abroad, and tax and transparency regimes tighten, the structuring conversation has become broader, earlier, and more strategic. The challenge is no longer simply how to hold wealth, but how to align business interests, family governance, succession, mobility, and investment structures in a way that remains coherent over time.
At the Thailand Wealth Management Forum 2026, Zac Lucas, Partner – International Private Wealth at Spencer West LLP, chaired a panel on “Wealth Structuring in a Globalised World: Succession, Mobility, and Intergenerational Planning for Thai Families in 2026”. In steering the discussion, Lucas set out a practical framework for understanding the pressures now shaping Thai family wealth. His questions repeatedly drew attention to the widening gap between domestic structures and international realities, the need for more integrated planning across advisory disciplines, and the importance of preparing families before tax exposure, succession conflict, or global mobility make decisions harder to manage. His contribution highlighted a central point: wealth structuring can no longer be treated as a specialist side issue. It is increasingly central to how families protect continuity in a globalised world.
Key Takeaways
- Thai family wealth still starts with the family business: Any serious structuring conversation must begin with business ownership, trapped capital, and succession.
- Internationalisation creates a two-sided challenge: Families must think about both the “launch pad” from Thailand and the “landing pad” abroad.
- Governance tools are becoming more important: Family charters, shareholder agreements, and holding structures are increasingly central to preserving order across generations.
- Mobility and tax are now closely linked: Sending children abroad, expanding overseas, and holding foreign assets all create structuring consequences that require earlier planning.
- Advisory work must be more integrated: Tax, legal, governance, fiduciary, and wealth planning issues can no longer be handled in isolation.
Start with the Family Business
Lucas opened the panel by grounding the discussion in the commercial reality of Thai wealth. “Within Southeast Asia, the principal source of wealth for all of the wealthy families is the family business,” he said.
That framing matters because it shifts the conversation away from the idea that wealth structuring is mainly about offshore portfolios, trusts, or estate documents. For many Thai families, the largest concentration of value still sits inside the operating business. Dividends, investment portfolios, and personal holdings matter, but as Lucas noted, “the mass amount of capital gets trapped in the business”.
This is a crucial starting point. If the family business remains the engine of generational wealth, then structuring cannot be separated from business succession, governance, and control. The transition from business wealth to financial wealth, and the point at which a family begins institutionalising that shift, becomes a central strategic issue.
Lucas signalled this clearly when he referred to the broader question of when families should move towards a family office model and how they should think about the transition “from business to financial wealth”. That is not just an operational question. It is about whether the family is ready to move from founder-led concentration towards a more organised system of ownership and stewardship.
The Structuring Challenge Is Both Domestic and International
Lucas then expanded the discussion by describing international structuring in terms of “launch pad and landing pad”.
That phrase captured one of the most useful themes of the panel. Families cannot think only about what leaves Thailand. They also need to think about where it lands, how it is held, and what consequences arise in the new jurisdiction. Once families begin investing abroad, relocating members overseas, or educating children in foreign markets, the domestic and international sides of wealth planning can no longer be treated separately.
This was one of Lucas’s strengths as chair. He kept bringing the conversation back to the fact that internationalisation is not simply about moving money offshore. It changes how succession works, how tax risk accumulates, how governance should be designed, and how families need to think about the future.
In other words, cross-border structuring is not just about external opportunity. It also changes the domestic architecture of the family itself.
Governance Is Becoming More Central
A major thread in Lucas’s questioning was the role of governance tools in keeping wealth intact across generations. He repeatedly raised the importance of family charters, shareholder agreements, and holding companies as mechanisms for order and continuity.
At one point he asked whether families were increasingly looking at “a family charter, or… family shareholder agreements, or even… holding structure” as ways to institutionalise decision-making. That line of questioning went to the heart of one of the biggest risks facing business families: fragmentation.
Without strong governance, wealth can quickly become diluted or contested as ownership passes from one generation to the next. Lucas’s focus here was not abstract. He was drawing attention to a practical truth: preserving wealth often depends less on investment returns than on whether the family has agreed rules around control, exits, and succession.
He also pushed the panel on one of the most important technical issues in this area: whether governance mechanisms actually survive inheritance. His question about whether successors can be forced into shareholder arrangements, or whether they can opt out, was especially sharp. It showed that governance only works if it is designed to last beyond the current generation.
That made his broader point clear. It is not enough to create family rules for today’s shareholders. Families need structures that remain effective when the shares move on.
Advice Has to Be Joined Up
Another strong theme in Lucas’s chairing was the inadequacy of fragmented advisory work. Early in the discussion, he asked whether different types of advisers were increasingly appearing to handle different aspects of the same family challenge, some on business succession and governance, others on investment and financial wealth.
This matters because it reflects a common weakness in practice. Families often receive tax advice, legal advice, investment advice, and governance advice separately, even though their actual problems do not arrive in separate boxes.
Lucas’s questioning helped expose that weakness. Structures may be established for investment reasons without enough thought to tax leakage. Succession plans may be designed without fully considering governance durability. Offshore arrangements may be built without enough regard to how they relate to domestic assets and the family business.
His contribution suggested that wealthy families increasingly need one coordinated framework rather than multiple disconnected solutions. Prevention, in this context, is much cheaper than correction.
International Mobility Changes Everything
Lucas also pushed the panel to confront the structuring implications of family mobility. He focused particularly on Thai families sending children overseas for education, career development, or longer-term relocation.
His questions here were especially effective because they linked ordinary family decisions to wider tax and succession consequences. He asked how sophisticated families really are when they send heirs to jurisdictions such as the United States, the United Kingdom, or Australia, all of which can carry significant tax consequences.
He described this as “a critical question”, and rightly so. A child studying abroad may eventually marry there, settle there, work there, and become exposed to a much higher tax environment than the family originally intended. That is no longer a personal choice without structuring consequences. It can reshape the future profile of family wealth.
Lucas’s line of questioning made an important point: families often treat education and mobility as lifestyle issues, while treating structuring as a separate legal issue. In reality, the two are increasingly inseparable.
Domestic and Offshore Wealth Cannot Stay in Separate Silos
Another notable part of Lucas’s chairing came when he asked whether Thai families still tend to structure international wealth separately from domestic wealth, leaving local assets to be managed under simpler domestic arrangements while offshore assets sit in more formal structures.
This was an insightful question because it exposed a common gap in many markets. Families often build offshore structures for offshore assets, while keeping domestic holdings under very different arrangements. That may work for a time, but as capital circulates, distributions are needed, and succession moves forward, those silos become harder to maintain.
Lucas’s intervention suggested that Thai families may still often prefer that separation, but the underlying message was clear: long-term structuring needs a more connected architecture. Once wealth is global, governance and planning must become more global too.
Tax and Transparency Are Tightening the Frame
Lucas closed the discussion by focusing on tax and transparency. He raised questions about future Thai tax changes, inheritance tax, and broader global reporting frameworks such as Common Reporting Standard (CRS) and Foreign Account Tax Compliance Act (FATCA). He also asked how aware wealthy families really are of the surveillance environment that now exists around offshore assets.
This was an important way to end the panel because it reflected one of the defining realities of 2026. Families can no longer rely on old assumptions about confidentiality or flexibility. Offshore assets, foreign income, bank accounts, real estate, and mobility decisions all sit within a much tighter disclosure framework than before.
Lucas’s questions made clear that structuring today must be designed for scrutiny, not for obscurity.
