Cross-Border Wills and Trusts: What Changes With Assets in Two Countries

You don't need to be ultra-wealthy for this to bite. A holiday home abroad, a foreign pension, an overseas account, or simply having moved country is enough to turn a straightforward estate into a cross-border one. Here's what actually changes.

Why one will may not be enough

Different countries have different rules for who inherits, how estates are administered, and how a will is recognised. A document drafted for one system can be delayed, partially overridden, or misread by another. Two things commonly surprise people:

• Forced heirship. Some countries reserve fixed shares of an estate for certain relatives, regardless of what your will says. You may have less freedom to distribute foreign assets than you assume.
• Which country's law even applies. This isn't always where you live or where you're from: it can turn on domicile, nationality, or where an asset physically sits, and the answer can differ asset by asset.

The double-tax trap on death

Just as income can be taxed in two places, so can an estate. More than one country may claim inheritance or estate tax on the same assets. Treaties and reliefs sometimes prevent genuine double taxation, but not always, and not automatically. This is worth understanding while you're planning, not discovering afterwards.

Where trusts fit, and where they don't travel well

Trusts can be powerful tools for holding and passing on wealth, but they are a creation of certain legal systems and are treated very differently elsewhere. A structure that's efficient and well-understood in one country can be taxed punitively, or simply not recognised, in another. A trust is not a universal solution: it's a tool that has to be matched to the specific countries in your picture.

The questions to ask before it matters

• Which countries touch my estate? Where I live, where I'm domiciled, where each asset sits, and where my heirs are.
• Does my current will actually work in all of them, or could it be delayed or overridden abroad?
• Do I need more than one will, carefully coordinated so they don't accidentally revoke each other?
• Where could the same assets be taxed twice on death, and is there relief?

None of this is a reason for alarm: it's a reason to have the conversation early, with someone who handles cross-border estates specifically, rather than assuming a domestic will covers a global life.

Frequently asked questions

Can a single will cover assets I hold in more than one country?

Sometimes, but not reliably. A will drafted for one country's system can be delayed, partially overridden, or not fully recognised by another. Some people are better served by more than one will, carefully coordinated so they don't accidentally revoke each other. Whether that applies to you depends on which countries touch your estate, so it's a question to put to a cross-border specialist rather than assume.

What is a trust used for, in general terms?

In broad terms, a trust is a legal arrangement for holding and passing on assets, with someone appointed to look after them for the people who are meant to benefit. It's a creation of certain legal systems and is treated very differently elsewhere: a structure that's well understood in one country can be taxed harshly, or simply not recognised, in another. A trust is a tool to be matched to your specific circumstances, not a universal solution.

Why does cross-border estate planning need specialist local advice?

Succession, inheritance tax, and trust law are highly jurisdiction-specific and interact in complex ways. Which country's rules apply can turn on domicile, nationality, or where an asset physically sits, and the answer can differ asset by asset. General reading helps you ask better questions, but only someone who handles cross-border estates in the specific countries in your picture can tell you how the rules combine for you.