Dutch Court Shuts Door on Pre-2017 Wealth Tax Challenges

The Bottom Line

• Finality for Old Tax Years: Dutch wealth tax assessments (Box 3) for 2016 and prior years are effectively final. This ruling confirms that legal challenges based on the system’s inherent flaws will fail for these years.
• A Near-Impossible Standard: The only remaining path to challenge pre-2017 assessments is to prove an “individual and excessive burden,” a very high bar that courts rarely find is met, especially if other assets (like home equity) exist.
• Focus on Post-2016: This decision solidifies the legal distinction drawn by the Supreme Court. For businesses and individuals, the strategic focus for wealth tax disputes should remain firmly on tax years 2017 and later, where systemic legal redress is available.

The Details

The Dutch “Box 3” wealth tax system has been a source of legal contention for years. Until 2017, the system taxed individuals not on their actual investment returns, but on a fixed, fictional return (often 4%). This created situations where individuals with low-yield assets, such as cash or savings accounts, paid tax on income they never earned. In a landmark 2021 ruling, the Dutch Supreme Court declared this system unlawful. However, a key question remained: how far back does this ruling apply? This recent case from the Amsterdam Court of Appeal provides a clear, and for many, disappointing answer.

The core of the court’s decision rests on a critical cut-off date established by the Supreme Court. While the wealth tax system was deemed to violate European law, the Supreme Court limited systemic legal remedies to the tax year 2017 and forward. For earlier years, such as 2015 and 2016 at issue in this case, the only path to relief is proving that the tax constitutes an “individual and excessive burden.” The taxpayer in this case, who held significant assets in cash with zero actual return, abandoned this difficult argument. Instead, they argued that the “intention of the law” was never to tax non-existent income.

While the Court of Appeal acknowledged the logic of the taxpayer’s argument—agreeing that taxing zero-return assets was not the law’s original intent—it ultimately ruled that its hands were tied by precedent. The court stated it is bound to follow the Supreme Court’s explicit instructions for pre-2017 cases. The argument about legislative intent, while valid in principle, was not sufficient to override the high court’s specific ruling. The decision reaffirms that for finalized tax assessments before 2017, the door for challenges is, for all practical purposes, closed.

Source

Gerechtshof Amsterdam