Questione giuridica chiave
Whether the CHF 100,000 solidarity-guarantor payment was deductible as earning expenses for direct federal tax and cantonal taxes.
Decisione estratta
The case had to be reassessed after fuller fact-finding; the prior refusal could not stand on the existing record.
Motivazione estratta
Such payments may qualify as causal earning expenses only if sufficiently closely connected to the exercise of the profession and within the usual business risk. Here, the factual basis was incomplete, so deductibility could not yet be decided.