Key legal question
Whether the federal complaints against the cantonal non-entry decision were sufficiently reasoned under Art. 42 BGG.
Extracted holding
No. The appellant attacked the substantive tax assessment, while the only reviewable question was the cantonal court's confirmation of the non-entry decision; the complaint did not address that point.
Extracted reasoning
A federal complaint must engage with the decisive reasons of the challenged judgment and remain within the subject matter of the dispute. Because the appellant did not challenge the reasoning on lateness/non-entry, the statutory reasoning requirements were not met.