Key legal question
Whether the federal appeal against the cantonal inadmissibility ruling was sufficiently reasoned under Art. 42 LTF.
Extracted holding
No. The appellant did not address the timeliness issue or the alternative merits reasoning, so the appeal failed the federal substantiation requirement.
Extracted reasoning
The Federal Supreme Court only examines the challenged decision and the appellant raised no arguments against the decisive finding of tardiness nor against the alternative tax-law reasoning; therefore the appeal was manifestly insufficiently reasoned.