Questão jurídica principal
Whether the Zurich deduction for political party contributions is compatible with federal tax harmonization law
Decisão extraída
The cantonal deduction has no basis in the Tax Harmonization Act and is therefore harmonization- and federal-law inconsistent.
Fundamentação extraída
Political party contributions are neither business expenses nor deductible voluntary donations to charitable/public-purpose entities, and they are not social deductions under the Act.