Questão jurídica principal
Whether the federal complaint was premature because the cantonal appeal path had not first been exhausted.
Decisão extraída
The complaint was admissible; in double-taxation cases, federal review depends on a cantonal authority decision, not on exhaustion of all cantonal remedies.
Fundamentação extraída
Under the prohibition of double taxation and consistent practice under Art. 59 OG, exhaustion of the cantonal instance chain is not required for admissibility.