Question juridique clé
Whether the state tax appeal was admissible despite the unfinished cantonal instance chain and the earlier Valais assessment
Solution extraite
The appeal was admissible; in intercantonal double-taxation cases the cantonal instance chain need not be exhausted, and the earlier Valais assessment could be included.
Motifs extraits
Art. 127(3) BV and Art. 89(3) OG allow a timely complaint against the later-acting canton to include the first canton’s assessment; the later federal tax-harmonization regime did not abolish this remedy.