What is the situation?
A Dutch court upheld a 2020 income tax assessment after the tax authority refused a sole trader’s declared business loss of €12,477. The taxpayer had no revenue in 2020, only €2,000 in 2022 and €4,000 in 2023, while losses continued each year.
The court accepted one procedural fault: the tax authority failed to attend the hearing during the objection phase. That made the appeal formally well-founded, but it did not change the tax outcome.
The real signal is stricter scrutiny of whether an activity is a genuine source of income. In Dutch tax practice, that means more than intent. The business must show an objectively realistic prospect of profit, supported by evidence.
Analysis
This matters for micro and small businesses that operate as sole proprietorships, carry early-stage losses, and engage in advisory work, product development, or experimental activity.
The key risk is that founders often assume effort, registration, and business costs are enough. They are not. The tax authority may reclassify an activity as non-business if revenue is absent for multiple years and there is no credible, documented evidence of commercial traction. This can block loss relief and undermine your tax position.
The court also shows a second reality. Procedural mistakes by the tax authority do not automatically save the taxpayer. You may win on process and still lose on substance.
Macro policy talks about entrepreneurship. Tax enforcement asks for proof of commercial viability.
Impact
H1
If your business reports losses, keep a defensible file now: activity description, pricing logic, contracts, invoices, payment proof, forecasts, and evidence explaining when and why profit is expected.
H2
Repeated low or zero turnover can increase the risk of reclassification. That can block loss relief and weaken your tax position for prior and future years.
H3
Founder-led micro businesses with long incubation periods face structural friction with tax rules built around objective profit expectations rather than entrepreneurial narratives or technical promises.
Daily operational takeaway
Review your loss-making entities this week. Can you prove, with documents, that profit was realistically expected?
Source: District Court of Zeeland-West-Brabant, 2 March 2026, 25/2203, ECLI:NL:RBZWB:2026:1336
