Kernrechtsfrage
Whether the appeal is admissible against the Federal Administrative Court's remand judgment.
Extrahierter Entscheid
The remand judgment is an interlocutory decision, not a final or partial judgment; the appeal is admissible only under Art. 92 or 93 BGG, and the appellant failed to show irreparable harm.
Extrahierte Begründung
The lower court decided only material sub-issues and sent the matter back for further examination, so the Federal Tax Administration must still decide the VAT liability anew. No substantiation of irreparable disadvantage was provided.