Kernrechtsfrage
Whether the Federal Administrative Court wrongly remanded the case for consideration of the Switzerland–Netherlands tax treaty.
Extrahierter Entscheid
Yes. The tax authority was not required to examine treaty relief ex officio when the refund request was filed only under domestic law forms and rules.
Extrahierte Begründung
A withholding tax refund is optional; domestic law and the treaty require different formal requests. Requiring the correct form is not excessive formalism.