Dutch Box 3 reform and the end of partial non-resident status: a game changer for expats working and living in the Netherlands

From limited to full Box 3 exposure

Previously, employees using the 30%-ruling could opt for a partial non-resident status, which effectively excluded them from Dutch Box 3 taxation. This made Dutch tax residency fiscally attractive, as exposure to Box 3 wealth tax was limited. With the abolition of the partial non-resident regime,employees with the 30%-ruling will be treated as full Dutch tax residents for Box 3 purposes. Their worldwide assets will fall within the scope of Dutch taxation. The new Box 3 system is expected to tax not only income such as interest and dividends, but also value changes, including potentially unrealized gains.

Foreign (and Dutch) investment portfolios and other assets that were previously out of scope will become fully taxable in the Netherlands, accompanied by more complex reporting and valuation requirements.

Tax residency: a critical decision before moving to the Netherlands

An important but often underestimated consequence is that determining  tax residency becomes much more relevant. Historically, it was often beneficial for employees using the 30%-ruling to become Dutch tax residents, but this will no longer always be the case.

Individuals who qualify as non-residents of the Netherlands are generally not subject to Dutch Box 3 taxation on their worldwide assets. Instead, Dutch taxation is typically limited to specific Dutch-source assets (such as Dutch real estate). Under most tax treaties, taxing rights on private wealth are allocated to the country of residence, so foreign investment portfolios will usually remain outside the Dutch Box 3 scope for non-residents.

However, non-Dutch tax residency is not always preferable. The best outcome depends on several factors, including the tax system in the country of residence, applicable tax treaties, and personal circumstances. The default position has shifted: Dutch tax residency is no longer automatically advantageous for expats.

Crucially, the tax residency assessment should ideally be made before relocating to the Netherlands. Tax residency is determined based on all relevant facts and circumstances, not by choice. The structure of an assignment  can influence this assessment, but does not determine the outcome. For internationally mobile employees temporarily assigned to the Netherlands, it is essential to assess tax residency in advance, as the factual situation will be decisive.

How aaff can help

In this new landscape, a careful and forward-looking assessment is essential. At aaff, we support both employers and employees in analyzing tax residency positions, modeling the potential Box 3 impact on global wealth, and structuring international assignments in a way that is both tax-efficient and compliant. If you would like to understand what this means for your specific situation, please contact one of our experts.