Wealth Structuring for Internationally Mobile Families: An Overview

For families whose lives span multiple countries — whether through work, business interests, lifestyle choices, or simple geographic diversity — wealth structuring is rarely straightforward. Assets held in different jurisdictions, income earned across borders, and family members resident in separate tax territories create complexity that demands careful, joined-up planning.

This guide provides a grounding in the key principles, tools, and considerations that internationally mobile families should understand as they approach the task of structuring their wealth. It is not exhaustive — every family's circumstances are unique — but it offers a framework for productive conversations with qualified advisers.

Important: tax and regulatory rules change frequently. The information here reflects the position as of 2026. Always take professional advice tailored to your specific situation before making structuring decisions.

Why Wealth Structuring Matters More for International Families

A family with all its wealth, income, and members concentrated in a single jurisdiction has relatively straightforward tax and succession planning needs. The moment geography becomes more complex, new questions arise:

• Which country has the right to tax your global income and assets?
• How do you prevent the same income or gain being taxed twice?
• Which country's succession laws apply to your estate?
• How do you protect assets from creditors, divorce claims, or political risk in one jurisdiction?
• How do you pass wealth efficiently to the next generation when they may be resident in yet another country?

Getting these questions wrong — or ignoring them — can be extremely costly. Double taxation, unexpected inheritance tax exposure, or structures that fail to work as intended in key jurisdictions can erode family wealth significantly over a generation.

The Building Blocks of International Wealth Structuring

Tax Residence

Tax residence is the foundation of everything else. Your tax residence — and that of each family member — determines which country has the primary right to tax your income, gains, and in some cases your estate.

Most countries determine residence through a combination of physical presence rules and other ties (accommodation, family, business interests). As of 2026, the UK uses the Statutory Residence Test, a sophisticated framework with multiple tests. The UAE levies no personal income tax, but tax residence there (determined by days of presence or a permanent home and centre of vital interests) can still matter for treaty purposes and for the country you leave. The US taxes on citizenship regardless of residence — a unique and powerful hook that creates special planning requirements for US persons.

Key points to understand:

• Dual residence is possible and surprisingly common. Tax treaties between countries typically contain tie-breaker rules to determine a single country of residence for treaty purposes.
• Domicile is a separate concept from residence, particularly important under UK law. Domicile is broadly your "permanent home" jurisdiction and determines how UK inheritance tax applies to you.
• Deemed domicile (now reformed in the UK following the non-dom changes of April 2025) historically created IHT exposure for long-term UK residents even after departure. Understanding the current rules is essential.

Double Taxation Agreements (DTAs)

The UK has an extensive treaty network — over 130 double taxation agreements — as do many other major economies. These treaties allocate taxing rights between countries and typically provide relief mechanisms such as exemption or tax credits to prevent the same income or gain being taxed twice.

DTAs vary enormously in their terms. The treaty between the UK and UAE, for example, provides no comprehensive income treaty (the UAE has no income tax), while the UK-US treaty is one of the most complex in the world. Understanding which treaties apply — and where they have gaps — is fundamental to international structuring.

The Core Planning Structures

Offshore investment bonds are a widely used wrapper for internationally mobile clients. Issued by life companies in jurisdictions such as the Isle of Man, Ireland, Guernsey, or Luxembourg, these are insurance policies that hold a diversified investment portfolio. The key benefit is tax deferral: the fund grows gross of tax, with the policyholder only taxable on withdrawals. For clients moving between jurisdictions, the bond's tax treatment can shift with their residence status, making these highly flexible vehicles.

Trusts are the most powerful and flexible vehicle for succession planning and asset protection. A discretionary trust settled by a parent or grandparent can hold assets for the benefit of a family across multiple generations and jurisdictions. The key planning benefits include removal of assets from the settlor's estate for inheritance tax, protection from creditors and divorce, and the ability to manage distributions tax-efficiently for beneficiaries in different countries. However, offshore trusts can generate complex tax reporting obligations in many jurisdictions — specialist trustees and advisers are essential.

Family Investment Companies (FICs) have become increasingly popular, particularly for UK-connected families, as an alternative to trusts following trust tax charges. A FIC is a private limited company owned by family members, typically with different share classes allowing flexible allocation of income and capital. FICs can hold diverse assets — investments, properties, cash — and allow income to be retained in the company at lower corporation tax rates rather than distributed as personal income.

Holding companies in suitable jurisdictions (Luxembourg, Ireland, Netherlands, Singapore, and others with strong participation exemption regimes) are used to hold shares in operating businesses or investment portfolios, allowing dividends and capital gains to be received free of local tax before being distributed or reinvested.

Foundations — civil law equivalents of trusts, popular in jurisdictions such as Liechtenstein, Jersey, Guernsey, and Panama — are increasingly used where beneficiaries or structuring requirements favour a foundation structure over a trust.

Key Considerations for Structuring Decisions

Substance and Transparency

The era of opaque offshore structures is over. Post-BEPS (Base Erosion and Profit Shifting), virtually every offshore jurisdiction has introduced economic substance requirements, requiring that entities claiming tax residency in a jurisdiction actually conduct real economic activity there. The OECD's Common Reporting Standard (CRS) means financial account information is automatically exchanged between over 100 countries. FATCA requires similar disclosure for US persons.

Any structure that lacks genuine economic substance, or whose beneficial ownership is not properly disclosed, carries serious regulatory and reputational risk. Modern international tax planning must be built on transparency and substance.

Family Governance

For multi-generational family wealth, governance matters as much as legal structures. A family charter or constitution can articulate shared values, investment philosophies, and decision-making processes. Family councils and advisory boards help manage disagreements. Investment policy statements create consistency across trustees, managers, and family members. Without governance, even technically excellent structures can break down under the pressure of family dynamics.

Succession and Forced Heirship

Many civil law countries — including France, Spain, Germany, Egypt, and much of the Middle East — have forced heirship rules that require a proportion of an estate to pass to certain heirs regardless of what a will says. EU Succession Regulation 650/2012 allows EU residents to elect for the law of their nationality to apply to their estate, but this is a complex area with many pitfalls.

For international families, it is essential to understand:

• Which country's succession law applies to each asset
• Whether that jurisdiction has forced heirship rules
• How structures such as trusts and foundations interact with those rules in different countries

Currency and Jurisdiction Risk

Structuring decisions should account for currency risk (assets and liabilities in different currencies create exposure), political risk (the stability of the jurisdiction where structures are based), and counterparty risk (the financial strength of any institution acting as trustee, custodian, or insurer).

The Planning Process

Effective wealth structuring for internationally mobile families typically follows a sequence:

1. Map the family — residence and domicile of each family member, past and future plans, citizenship.
2. Map the wealth — location of every asset class, currency, income stream, and liability.
3. Identify the objectives — tax efficiency, succession, asset protection, business continuity, philanthropy.
4. Gap analysis — where is the current situation sub-optimal? What are the key risks?
5. Structure design — working with advisers across relevant jurisdictions to design appropriate structures.
6. Implementation — legal documentation, asset transfers, reporting obligations.
7. Ongoing review — circumstances and tax laws change; annual reviews are essential.

Common Mistakes

• Acting too late — many planning opportunities are lost once you have established residence somewhere. Pre-arrival planning is far more effective.
• Single-jurisdiction advice — advisers in one country cannot adequately advise on multi-jurisdiction structures. A coordinated team approach is essential.
• Ignoring substance — structures that lack commercial substance are vulnerable to challenge.
• Neglecting governance — structuring without adequate family governance frameworks often leads to disputes.
• Overcomplexity — the simplest structure that achieves the objective is usually the best. Over-engineered structures are expensive to maintain and may attract scrutiny.

How Global Investments Can Help

Global Investments has 32 years of experience working with internationally mobile families across every major wealth hub. Our network of advisers, tax specialists, and legal professionals spans the UK, UAE, Cyprus, Singapore, and beyond. We take a holistic view of your family's circumstances — not just the tax position in one country, but the full multi-jurisdictional picture.

Whether you are at the early planning stage before a move abroad, mid-journey and looking to review existing structures, or planning the transfer of wealth to the next generation, we can help you design, implement, and maintain structures that are robust, transparent, and effective. Contact our wealth structuring team to arrange an initial consultation.

Capital is at risk. The value of investments and the income from them can fall as well as rise. Tax treatment depends on individual circumstances and may change. This article is for information only and does not constitute financial, tax, or legal advice. Always seek professional advice before making structuring decisions.