Key legal question
Whether the complaint against the cantonal tax court decision was admissible, including insofar as it sought annulment of the underlying assessments.
Extracted holding
The complaint was admissible against the last cantonal-instance judgment, but inadmissible to the extent it directly challenged the assessment decisions.
Extracted reasoning
Federal public-law appeal lies against final cantonal decisions; the underlying assessment rulings are not themselves the proper object of appeal here.