Questão jurídica principal
Whether the taxpayer had to reimburse the advance refunds of withholding tax on lottery winnings because the Valais authority was allegedly incompetent.
Decisão extraída
No restitution was owed: under Art. 29 and 30 LIA, advance refund requests may be filed with the authority competent at the time of early filing, so the Valais authority could validly refund the tax.
Fundamentação extraída
The coordination of the refund timing rules and the competence rule means Art. 30 LIA does not exclude advance filings under Art. 29 para. 3 LIA before year-end. Limiting competence to the authority at year-end would make the exception meaningless and create excessive formalism.