American Expats in Spain: Why Your Will Needs Cross-Border Planning

Business Expats
1 day ago
4 min read

American Expats in spain Estate Planning — Moving to Spain is an exciting step for many Americans—better lifestyle, rich culture, and often a more balanced way of life.

Moving to Spain is an exciting step for many Americans—better lifestyle, rich culture, and often a more balanced way of life. But once you make that move, one of the most overlooked areas of planning is also one of the most important: your will and estate structure.If you are a U.S. citizen living in Spain and still hold U.S. assets such as brokerage accounts, retirement plans, bank accounts, or real estate, your estate is no longer purely domestic. It becomes cross-border, and that changes everything.

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Your estate may fall under Spanish law

Spain follows the EU Succession Regulation, which generally applies the law of your habitual residence at the time of death.

This means:

If you live in Spain long-term, Spanish inheritance law may apply by default
Spanish law includes “forced heirship” rules, which require portions of your estate to pass to certain relatives, often children

This is very different from the U.S. system, where you generally have broad freedom to decide how your assets are distributed.

Without proper planning, your estate may not be handled the way you intended.

You can often choose U.S. law—but it must be explicit

One important feature of Spanish succession rules is that, in many cases, you can elect for your national law (U.S. law) to govern your estate. However, this is not automatic.

It must be:

Clearly stated in your Spanish will
Properly drafted to meet local legal requirements

This single clause can significantly change how your estate is treated and help align it with your original intentions.

The “two-will” approach is common and effective

Many U.S. expats in Spain use a coordinated dual-will structure:

Spanish Will

Typically used for:

Spanish real estate
Spanish bank accounts and local assets

It is usually executed before a Spanish notary and may include an election of U.S. law where appropriate.

U.S. Will

Typically used for:

U.S. brokerage and bank accounts
Retirement accounts (IRA, 401(k))
U.S. real estate

The key is coordination—each document must be carefully drafted so they do not unintentionally revoke or conflict with each other.

Beneficiary designations matter just as much as your will

One of the most common mistakes in estate planning is focusing only on the will.

Many important assets pass outside of it entirely, including:

Retirement accounts (IRA, 401(k))
Life insurance policies
Joint accounts
Transfer-on-death brokerage accounts

If these are not updated and aligned with your overall plan, they can override your will regardless of your intentions.

Taxes are only part of the equation

Spain has an inheritance tax system that varies significantly by region and family relationship. While some beneficiaries benefit from generous reductions, others may face unexpected tax exposure depending on location and circumstances.

U.S. estate tax rules may also apply in certain cases for larger estates.

But taxes are only one piece of the puzzle.

The bigger issue: cross-border complexity

Without proper coordination, your heirs may face:

Probate in the United States for U.S. assets
Separate succession proceedings in Spain for Spanish assets
Delays, duplication, and increased legal costs

This is where many international estates become unnecessarily complicated—not because of taxes, but because of structure.

Final thought

Besides taxes, this is one of the most important parts of your financial planning when living abroad.

Estate planning is often treated as something to “deal with later,” but for U.S. expats in Spain, later can mean navigating two legal systems, conflicting rules, and avoidable stress for your family.

A well-structured plan ensures:

Your wishes are respected across jurisdictions
Your assets transfer smoothly
Your family avoids unnecessary legal complexity

In international life, estate planning is not just a legal formality—it is a core part of responsible financial organization.

And the earlier it is addressed, the more control you retain over the outcome.

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Is Your Estate Plan Ready for Life in Spain?

Moving to Spain changes more than your residence—it can also affect how your estate is administered, taxed and transferred to your family.

At Business Expats, we help internationally mobile individuals and families coordinate estate planning, succession, taxation and wealth structuring across multiple jurisdictions.

If you are an American living in Spain—or planning your relocation—this is the right time to review your cross-border estate strategy.

Book a tailored consultation with one of our specialists.