Question juridique clé
Whether the constitutional complaint was admissible alongside the administrative appeal
Solution extraite
The constitutional complaint was inadmissible because the matter fell under the Federal Tax Harmonization Act and was open to administrative appeal.
Motifs extraits
Art. 69 StHG concerned a matter governed by Title 2 via the reference in Art. 16 StHG; for Zurich, the federal rules were already binding from 1999, so review lay under Art. 73 StHG.