DJ Tiësto and the €17 million lesson: why cross-border tax advice matters

Nearly €17 million in damages over faulty tax advice: the Tiësto case is a reminder that getting U.S. tax residency and cross-border planning wrong can have serious consequences. And that risk is not limited to global superstars.

On 12 May 2026, the Amsterdam Court of Appeal ruled that U.S. law firm Greenberg Traurig must pay damages to DJ Tiësto after faulty tax advice led to extra U.S. tax and penalties. Dutch media reported the damages at nearly €17 million.

At first glance, it looks like a celebrity tax story. In reality, it highlights a much broader issue: when your life or work spans more than one country, bad tax advice can become very expensive very quickly. That is especially true when nobody is looking at how two tax systems interact.

What happened in the Tiësto case?

According to the Amsterdam Court of Appeal, Tiësto became a U.S. tax resident in 2012 because the number of days he spent in the United States exceeded the relevant threshold. From that point on, his tax position changed significantly. The court found that Greenberg Traurig gave him incorrect tax advice, which led to wrongly filed U.S. returns. Tiësto discovered the mistake in 2018, approached the IRS to correct it, and then had to pay additional tax and a penalty. The court held that the law firm must compensate him for that damage.

The court’s reasoning is what makes this case so important. It found it plausible that, if Tiësto had been informed correctly in time, he would have made different choices, spent fewer days in the United States, and avoided becoming a U.S. tax resident there. In other words, the damage was not unavoidable. It could have been prevented with proper cross-border advice.

Why this matters beyond one celebrity case

It is tempting to think this only applies to global performers with packed U.S. schedules. But the underlying problem is much broader.

This case is really about what happens when:

• travel patterns are not assessed properly
• tax residency is triggered without the person fully realizing it
• one advisor understands one country, but not the interaction between both
• filing continues for years on the wrong basis

That can affect Americans abroad who travel to the U.S. frequently, green card holders who moved back to Europe, entrepreneurs with business income in more than one country, and professionals with investments, property, or cross-border structures.

U.S. tax residency can change everything

Under IRS rules, a person can become a U.S. tax resident through the green card test or the substantial presence test. Once someone is treated as a U.S. tax resident, they are generally taxed on worldwide income. U.S. citizens and resident aliens abroad may also face ongoing filing and reporting obligations even while living outside the United States.

That is why travel days matter more than many people expect. Someone may think they are simply spending time in the United States for work, events, consulting, or meetings. But if their presence is not tracked properly, their tax position can shift in ways that affect far more than one return.

Two tax systems do not line up neatly

For many Americans abroad, the challenge is not just filing one more form. It is dealing with two tax systems that each have their own logic, their own definitions, and their own reporting rules.

A straightforward salary is one thing. But complexity rises quickly once you add:

• self-employment or business income
• a company structure
• investments or brokerage accounts
• crypto
• pension build-up
• gifts or inheritances
• frequent travel between countries

On top of the annual U.S. return, there may also be reporting obligations such as FBAR, which applies to certain foreign financial accounts and is filed separately from the tax return.

This is where generic advice often breaks down. A local advisor may understand the domestic side but miss the U.S. consequences. A U.S. preparer may understand the IRS side but not the foreign structures involved. If no one is looking at the full interaction, the filing may be technically prepared but still fundamentally wrong.

Why mistakes are often discovered too late

One of the most difficult aspects of cross-border tax problems is that they often stay hidden for years.

Returns may be filed repeatedly before anyone notices that the underlying assumptions were wrong from the start. The issue may only surface when someone changes advisor, cleans up old filings, responds to an IRS question, or tries to regularize their position.

By then, the financial damage can include:

• back taxes
• interest
• penalties
• correction costs
• years of avoidable uncertainty

That is what makes the Tiësto case relevant to a much wider audience. Most readers will never face celebrity-sized damages. But the mechanism is familiar: poor cross-border advice, delayed discovery, and a problem that grows quietly over time.

The real lesson behind the verdict

The lesson is not simply that bad advice is costly.

It is that good cross-border tax advice is about more than filling in forms. It is about identifying the right tax position early, understanding which choices still exist, and seeing how one country’s rules affect the other.

In practice, that means asking the right questions in time:

• Do my U.S. travel days create residency risk?
• Am I being taxed as a U.S. resident or nonresident?
• How do my local and U.S. filing positions interact?
• Could my business, investments, pension, or assets be treated differently in each system?
• Am I relying on advice that only covers one side of the equation?

That kind of joined-up view is exactly what was missing in the Tiësto case.

Why this matters if your life spans more than one tax system

This story is especially relevant for people whose financial lives do not fit neatly into one country.

That includes:

• expats with recurring U.S. filing obligations
• green card holders with unresolved status questions
• entrepreneurs with cross-border business or income
• people with investments, crypto, or mixed asset exposure
• frequent travelers whose time in the United States may have tax consequences

For this audience, the lesson is straightforward: once your life or work crosses borders, assumptions become expensive.

Where Americans Overseas fits in

For many people, the hardest part is not knowing that rules exist. It is understanding how those rules interact in their specific situation, and whether the advice they are relying on truly covers both sides of the equation.

That is where cross-border guidance matters.

At Americans Overseas, we help people understand their U.S. tax obligations abroad and the practical consequences of cross-border tax residency, filing, and reporting rules. We know from experience that these issues become most stressful when two systems overlap and no one has clearly explained how they fit together.

That is why we work with a trusted network of specialized tax advisors in both the Netherlands and the United States who understand the interaction between both systems.

You do not need to be a global superstar to run into the same type of trap. But you can act earlier, ask better questions, and avoid discovering years later that an expensive mistake could have been prevented.

Do you have questions about your own situation, or that of a family member? Feel free to get in touch. A first orientation conversation is free of charge and without obligation.

Contact us for more information

Sources

• Rechtspraak.nl — Advocatenkantoor moet schadevergoeding betalen aan DJ Tiësto.
• NL Times — US law firm must pay Dutch DJ Tiësto nearly €17 million over faulty tax advice.