The Bottom Line
- Foreign “Letterbox” Companies Face High Scrutiny: Using overseas entities with little real economic substance to park profits generated in the Netherlands carries a significant risk of being challenged by Dutch tax authorities, even many years after the fact.
- Tax Authorities Have Long Memories and Powerful Tools: Information from criminal investigations can trigger large tax reassessments. If foreign structures are involved, tax authorities can use an extended 12-year statute of limitations and can shift the burden of proof onto the taxpayer.
- Challenging the Math Can Pay Off: Even when a tax structure is deemed abusive, companies can successfully reduce the final tax bill by demonstrating that the tax authority’s profit estimation is unreasonable or based on unrepresentative data.
The Details
This case revolved around a Dutch company trading in military equipment that conducted a significant portion of its sales through a related sole proprietorship based in Hong Kong. The Dutch tax authorities, following a criminal investigation, argued that this structure was artificial. They contended that the Hong Kong entity had no real substance—no staff, no storage, and its operations were effectively managed from the Netherlands by the same individuals controlling the Dutch company. The Court of Appeal agreed, finding that the two entities were so intertwined they functioned as a single economic unit. It concluded that the Hong Kong entity was merely a “cashier,” used to siphon profits that should have been taxed in the Netherlands.
The court’s finding that the structure was a sham had severe procedural consequences for the company. First, because profits were funneled to bank accounts in Hong Kong, the court affirmed the tax inspector’s right to use the extended 12-year assessment period, allowing them to issue tax bills for years that would normally be time-barred. Second, and crucially, the court held that by knowingly omitting these profits, the company had failed to file the “required tax returns.” This triggered a reversal of the burden of proof, placing the onus entirely on the company to prove, with convincing evidence, that the tax assessments were incorrect.
Despite losing on the fundamental issue of the structure’s validity, the company secured a significant partial victory by challenging the tax authority’s calculations. The inspector had estimated the undeclared profits by calculating an average profit margin of 228% based on a small sample of 13 transactions. The court found this estimate to be unreasonable because the sample was skewed by a single, exceptionally profitable “once-in-a-lifetime” deal. Ruling that this outlier made the estimate arbitrary, the court recalculated the profit correction using a more representative margin of 83%. This decision substantially reduced the final tax assessments over the ten-year period, highlighting a key takeaway for businesses: even in a losing battle, a granular attack on the tax authority’s methodology can dramatically limit the financial damage.
Source
Gerechtshof ‘s-Hertogenbosch
