Cross-Border Real Estate Ownership: Structural Planning for U.S. and International Estates

For high-net-worth individuals, ownership of foreign real estate is rarely incidental. It may reflect lifestyle diversification, family legacy property, business expansion, or strategic residency planning. Yet while acquisition is often straightforward, succession and tax treatment are not.

Cross-border ownership introduces overlapping legal systems, competing tax regimes, and potential exposure in multiple jurisdictions. Without coordinated planning, a foreign property can become subject to parallel probate proceedings, forced heirship claims, liquidity constraints, and unanticipated estate or inheritance taxes. This discussion forms the foundation of a broader series addressing international estate and tax structuring for globally mobile families.

Part I: Dual Wills and Jurisdictional Coordination

When a U.S. domiciliary owns real property abroad, probate is generally required in the jurisdiction where the property is located. A U.S. will alone may not suffice to transfer title efficiently. Many civil law countries require local notarization, specific language formalities, or court procedures distinct from U.S. probate.

For this reason, sophisticated planning often involves:

• A U.S. will governing domestic assets; and

• A separate, locally compliant will governing the foreign property.

Each instrument must be carefully drafted to avoid inadvertent revocation of the other. Precision in drafting clauses addressing governing law and asset scope is critical. Improper coordination can invalidate one or both instruments. In some jurisdictions, forced heirship rules mandate that specific heirs receive fixed shares of real property, regardless of testamentary intent. Absent proactive planning, a foreign court may override dispositive provisions that would otherwise be valid under New York law.

Dual-will structures are not merely administrative conveniences. They are jurisdictional risk management tools.

Some countries also impose inheritance laws that guarantee certain family members a share of the estate, or require beneficiaries—rather than the estate itself—to pay inheritance taxes. With guidance from legal professionals in both countries, these challenges can be addressed in advance. Ultimately, if you own property outside the U.S., having two well-coordinated wills is a smart and effective way to ensure your wishes are honored and your loved ones are spared unnecessary complications.

Part II: U.S. Tax Exposure — Citizenship, Domicile, and Worldwide Taxation

High-net-worth individuals must distinguish between income tax residency, estate tax domicile, and citizenship-based taxation.

U.S. Citizens and Domiciliaries

The United States taxes its citizens and domiciliaries on worldwide assets for estate tax purposes. Ownership of foreign real estate does not remove it from the federal estate tax base. As of current law, the federal estate tax exemption remains historically high. However, sunset provisions may reduce that exemption in coming years. For individuals with significant global holdings, exposure can be material. New York estate tax adds an additional layer. New York domiciliaries are taxed on worldwide assets, including foreign real estate. Unlike federal law, New York’s estate tax includes the so-called “cliff,” where estates exceeding 105% of the exemption lose the exemption entirely.

Non-Citizens and Non-Domiciliaries

Non-U.S. citizens who are not domiciled in the United States face a dramatically different regime. They are subject to U.S. estate tax only on U.S.-situs assets—but the exemption is substantially lower (currently $60,000 absent treaty protection). Conversely, foreign jurisdictions may tax worldwide assets of their residents or domiciliaries, sometimes at lower thresholds than U.S. law. For globally mobile families—those splitting time between New York, London, Paris, or Dubai, for example —the determination of domicile can become outcome-determinative. Domicile is not defined solely by days present; it turns on intent, permanent home, and factual circumstances. An inadvertent shift in domicile can materially alter estate tax exposure.

Part III: Treaty Coordination and Double Taxation Risk

The United States maintains estate and gift tax treaties with a limited number of countries. These treaties address:

• Allocation of taxing rights between jurisdictions;

• Credits for taxes paid abroad;

• Determination of domicile for treaty purposes;

• Relief from double taxation

  
  

Where no treaty exists, double taxation is possible. While foreign tax credits may mitigate the impact, structural planning—through holding entities, trusts, or situs planning—may be required.

High-value estates frequently encounter multi-layered taxation:

• U.S. federal estate tax;

• State estate tax (e.g., New York);

• Foreign inheritance or succession tax;

• Beneficiary-level inheritance taxes in civil law jurisdictions.

  
  

Treaty analysis is therefore not academic. It directly informs structuring decisions during lifetime.

Part IV: Forced Heirship and Civil Law Constraints

Many civil law jurisdictions impose mandatory inheritance allocations to spouses or descendants. These forced heirship regimes can override testamentary freedom recognized under New York law. For individuals with children from prior marriages, complex family structures, or philanthropic objectives, forced heirship can frustrate intended distributions.

Mitigation strategies may include:

• Use of lifetime transfers;

• Ownership through corporate or trust vehicles;

• Choice-of-law elections permitted under EU succession regulations (where applicable);

• Coordinated marital property agreements

  
  

Failure to address these issues may result in fragmented ownership among unintended beneficiaries.

Part V: Liquidity and Administration Risk

Foreign real property often lacks immediate liquidity. If estate taxes are due within nine months of death (under U.S. federal law), and significant assets are tied up abroad, the estate may face forced sales or borrowing under unfavorable conditions.

Additional considerations include:

• Currency fluctuation risk;

• Foreign probate timelines;

• Translation and authentication requirements;

• Foreign executor recognition;

• Political or regulatory instability.

  
  

In estates of consequence, administrative delay alone can create significant financial exposure.