Wealth engineering: optimize your international assets

---

TL;DR:

• Wealth engineering offers a comprehensive approach integrating taxation, law and inheritance, unlike simple financial advice.
• She uses specialized tools such as holding companies, split of ownership and SCIs (real estate investment companies) to structure, protect and transfer international assets.
• For expatriates, a tailor-made strategy takes into account cross-border taxation, mobility and the specific risks of each country.

---

Wealth engineering is often confused with simple financial advice or one-off tax optimization. However, for an expatriate managing assets spread between Paris, Dubai, and Geneva, this confusion can be costly. The line between a traditional wealth management advisor and a wealth engineer is very real, and understanding it radically changes the quality of the decisions made. This article explains what wealth engineering truly is.’wealth engineering, what tools it uses, how it adapts to the specific needs of non-residents, and why a tailor-made approach remains the only effective way to protect and develop international wealth.

Key Points

Point	Details
Holistic vision	Wealth engineering builds comprehensive strategies by coordinating legal, tax and family aspects.
Custom-made tools	Each tool (holding company, SCI, split of ownership) is adapted to your profile and wealth management objectives.
International approach	For expatriates, wealth engineering secures transfer, protection and multi-jurisdictional taxation.
Personalized strategy	There is never a standard solution: qualitative analysis guides every recommendation.

Definition and foundations of wealth engineering

Wealth engineering is not simply about choosing an investment or optimizing a tax return. It's a discipline that considers your entire situation: your financial and real estate assets, your family structure, your long-term objectives, and the legal and tax constraints of each country where you operate. The fundamental distinction lies in the role played by each professional. A traditional wealth management advisor will generally offer financial solutions tailored to a standard profile: assurance-vie, real estate investment trusts (REITs), investment funds. A wealth engineer, on the other hand, adopts a holistic vision that goes far beyond this framework. In practical terms, the wealth engineer acts like a conductor. They coordinate the work of tax lawyers, notaries, accountants, and asset managers to build a coherent strategy. Each expert contributes their expertise, but it is the wealth engineer who ensures the overall harmony. This multidisciplinary approach is clearly distinct from isolated tax optimization. Whereas a tax specialist will seek to reduce your tax liability on a specific transaction, a wealth management engineer integrates this reduction into a broader strategy that considers inheritance planning, spousal protection, asset liquidity, and future legislative changes. For non-residents and expatriates, this dimension is particularly important. International wealth situations generate specific risks:

• Dual tax residency : being considered a tax resident in two countries simultaneously exposes one to double taxation on the same income.
• Conflicts of inheritance laws : the rules applicable to the transfer vary considerably from country to country, which can create unexpected situations for your heirs.
• Differentiated treatment of assets : real estate owned in France by a resident of the Emirates is subject to tax rules distinct from those applicable to a French resident.
• Professional mobility Each international move alters the applicable tax framework and can trigger tax events such as...’exit tax.

«"The wealth management engineer doesn't just answer a tax question. They anticipate the consequences of each decision on the entire estate, today and in ten years." Alexis Sagnier, Balmont Conseil.

This long-term vision is precisely what most business approaches lack. A financial product may be excellent in isolation, but counterproductive within a poorly structured overall wealth management strategy. This is why wealth engineering cannot be reduced to a list of products or techniques: it primarily designates a working method and a philosophy of support.

Tools and methods used in wealth engineering

Let's turn to the concrete solutions that a wealth management engineer uses to structure, protect, and transfer assets. These tools are not interchangeable: each addresses specific objectives and offers particular advantages depending on the situation.

The main structuring tools

Tool	Main objective	Key advantage	Main limit
Family holding company	Business ownership and transfer	Parent-subsidiary regime on dividends; deferral of taxation on contribution-sale (reinvestment of 70 % over three years since 2026)	Management costs; 20% tax on luxury assets of asset-holding companies with at least €5 million (Finance Law for 2026)
SCI (Société Civile Immobilière)	Real estate management and transfer	Facilitates gifts and avoids joint ownership	Taxation of rental income
Split of ownership (bare ownership / usufruct)	Early transmission	Reduction of the taxable base for gift tax	Temporary loss of full ownership
Assurance-vie contract	Savings and transfer outside of inheritance	Favorable tax treatment after 8 years	Limits and rules specific to each country
Dutreil pact	Family business transfer	Partial exemption of 75 % of the value transferred (article 787 B of the CGI)	Individual commitment to a six-year retention period, as stipulated in the 2026 Finance Act; luxury assets excluded.

The example of Dutreil pact This perfectly illustrates the concrete impact of estate planning. For a family business worth €2 million, given outright to two children by a donor under 70, the partial exemption of 75% of the % tax and the reduction of 50% of the % tax bring the inheritance tax down from approximately €426,000 to around €28,000. This is not a financial product: it is a tailor-made legal and tax structure.The division of ownership Another frequently used tool is to separate the bare ownership (the value of the property) from the usufruct (the right to use and enjoy the property or receive its income). By gifting the bare ownership to their children while retaining the usufruct, a parent significantly reduces the taxable base for gift tax, since the value of the bare ownership is lower than that of the full ownership.Other commonly used mechanisms:

• The family SCI (Société Civile Immobilière) allows for the joint ownership and management of real estate assets, avoiding the obstacles of joint ownership.
• The marriage contract adapted (separation of property, participation in acquisitions) to protect each spouse according to the most favorable matrimonial regime.
• Holding structures to optimize dividend payouts and prepare for a business sale under favorable tax conditions.

Pro tip: Before choosing a tool, always ask yourself what your primary objective is. A French real estate investment company (SCI) isn't suitable for all real estate situations, and a poorly designed division of ownership can create significant practical constraints. A wealth management engineer assesses all the parameters before recommending a structure.

The international approach for expatriates

The tools vary depending on the border. For a wealthy expatriate family, wealth planning must incorporate additional layers of complexity that most traditional advisors do not understand.

Risks specific to international mobility

1. Dual tax residency Some countries apply residency criteria that may overlap. A French executive living in Singapore but maintaining economic interests in France may find themselves taxed in both countries on their worldwide income.
2. The exit tax When leaving France, unrealized capital gains on certain securities are taxed as if they had been realized. Insufficient planning can lead to an immediate and unexpected tax burden.
3. The cross-taxation of inheritances : in the absence of an international convention, inheritance taxes may be levied in several countries on the same assets.
4. The treatment of real estate income : rents received in France by a non-resident are subject to 17.2 % of social levies, reduced to the solidarity levy of 7.5 % for an affiliate of a social security scheme of the EEA, Switzerland or the United Kingdom, and to specific reporting rules.

To navigate this environment, the wealth management engineer mobilizes specialized experts: international tax lawyers, notaries well-versed in bilateral agreements, and advisors familiar with the local rules of each country involved. taxation of non-residents In France, this is a field in itself that demands specialized expertise, particularly regarding international tax treaties and tax credit mechanisms. The phase of’impatriation, Returning to France after a period abroad clearly illustrates this complexity. The expatriate tax regime (Article 155 B of the French General Tax Code) applies until December 31st of the eighth year following the start of employment. It is reserved for employees and executives called in or recruited from abroad who have not been tax residents of France during the five preceding calendar years; it exempts the expatriation bonus and certain passive income from foreign sources. However, this regime must be planned for before returning, not discovered afterward. Using a holistic approach coordinating lawyers and notaries, the wealth management engineer specializing in international situations does not treat each country separately. They construct a comprehensive structure that takes into account the interactions between the different jurisdictions.

Key points to remember: For an expatriate family managing assets in three or more countries, the cost of an unsuitable structure often far exceeds the fees of a specialist wealth management engineer.

Strategies tailored to expatriates include, in particular, structuring assets before departure or return, setting up trusts or foundations in certain jurisdictions, and optimizing income flows between countries to minimize the overall tax burden while remaining compliant with each legislation.

Practical and personalized case studies: how wealth management engineering is applied in practice

After the principles and tools, let's see how all this takes shape in two typical situations. One of the most frequent mistakes is looking for a standard solution applicable to all similar profiles. Wealth engineering doesn't work that way.

Why custom-made is essential

Two families may appear identical: same level of wealth, same country of residence, same assets. Yet, their optimal wealth management strategies will differ as soon as their objectives, family structure, or medium-term plans diverge. This is what the qualitative and personalized approach of wealth planning emphasizes, an approach that does not rely on benchmarks or standardized rates of return.

Case 1: The expatriate in transition

A French executive based in Dubai for the past five years is planning to return to France in two years. His assets include an apartment in Paris (directly owned), a securities portfolio in France, and financial assets in the UAE. He will become a French tax resident again upon his return: without prior planning, his worldwide income will be immediately taxable in France. The wealth management engineer intervenes beforehand to:

• Check eligibility for the expatriate scheme and prepare the necessary supporting documents.
• Restructure the securities portfolio before returning to optimize the treatment of capital gains.
• Analyze the opportunity to keep or sell the Parisian apartment according to the applicable tax regime.

Case 2: The transfer of a family business

An entrepreneur wishes to transfer his business to his two children while ensuring operational continuity. The company's value is estimated at €3 million. Without structuring, gift taxes would amount to several hundred thousand euros. Thanks to a transfer holding company combined with a Dutreil agreement, the 75% tax allowance significantly reduces the taxable base. The estate planning engineer coordinates the work of a corporate lawyer, a notary for the deeds of gift, and an accountant for the valuation.

Situation	Without engineering	With engineering	Savings achieved
Transfer of a €3 million company to two children (donor under 70 years old)	~€825,000 in royalties	~€53,000 in taxes (Dutreil agreement and 50% reduction %)	~€772,000
Gift of a property worth €1 million to two children (donor aged 61 to 70)	Approximately €156,000 in full ownership rights	~€76,000 in bare ownership rights (60 %)	~€80,000

As highlighted by the distinction between a holistic approach and purely financial advice, a wealth management engineer is more of a strategist than a technician. They don't simply apply a tool; they build a coherent framework aligned with your life goals. To explore wealth cases For similar situations, it's helpful to analyze cases close to your own, while keeping in mind that every detail counts. A tailored approach always begins with a thorough diagnosis before any recommendations are made.

Our perspective on wealth management engineering: beyond the tools, the overall strategy

It's tempting to reduce wealth planning to a mere toolbox of legal and tax terms. Holding companies, real estate investment companies (SCIs), and split of ownership: these terms are widely used, and some advisors employ them as sales pitches without verifying their relevance in each specific situation. This is precisely where the risk lies. What truly distinguishes a holistic approach from simple technical optimization is the ability to integrate the human element into the equation. Wealth cannot be managed in isolation from family history, life plans, and inherited values. Wealth planners who ignore these dimensions produce structures that are technically sound but strategically unsuitable. We regularly observe situations where clients arrive with complex arrangements set up by technically competent advisors, but which no longer align with their current objectives. Dismantling a poorly designed structure often costs more than having built it correctly from the outset. The true value of wealth planning lies in multidisciplinary coordination, as evidenced by the distinction between holistic advice and isolated financial advice. It is not the tool that creates value, but the coherence of the whole. And this coherence is only achieved with time, listening, and an ability to question seemingly obvious solutions.

Meet with an expert for your tailored wealth management strategy

Your international wealth deserves attention that goes beyond standardised solutions. At Balmont Conseil, we support expatriates, business owners and wealthy families with a fully tailored wealth engineering approach and transparent pricing.We coordinate tax lawyers, notaries and asset managers to build coherent strategies suited to your life goals and international constraints. Whether you are preparing to pass on a business, to return to France or to structure assets in several countries, we support you at every stage. Discover our full approach to wealth management and check out our case studies to see how we have helped profiles similar to yours.

To learn more: Types of wealth management engineering for professionals: a guide for 2026.

Frequently asked questions about estate planning

How does wealth engineering differ from simple wealth management advice?

The wealth engineer coordinates several experts and builds tailor-made strategies integrating law, taxation and inheritance, whereas a wealth management advisor generally offers standardized financial solutions without this overall vision.

What are the main tools of wealth engineering?

The tools include the holding company, the division of ownership rights, the SCI (real estate investment company), the Dutreil pact and tailored marriage contracts, each designed to meet specific objectives of inheritance, protection or tax optimization.

Is wealth management strategy truly personalized for expatriates?

Yes, each strategy is adjusted according to the jurisdictions concerned, family objectives and the composition of international assets, because a coordinated holistic approach is the only way to effectively manage multi-country assets.

Are there any known benchmarks or rates of return for wealth management engineering?

No, wealth engineering is based on a personalized qualitative analysis and not on standardized indicators, because each wealth situation is unique and the results depend on parameters that are too variable to be generalized.

Recommendation

• International Wealth Management: Destination-Based Strategy
• International wealth risk management
• International wealth risk management
• Wealth management checklist 2026: optimizing your international assets