Questão jurídica principal
Whether taxing the self-employment income in both Aargau and Schwyz violated the ban on intercantonal double taxation.
Decisão extraída
The Schwyz business location was a mere artificial domicile; the income was taxable at the Aargau home domicile only.
Fundamentação extraída
A business domicile requires real activity in permanent facilities outside the home canton. The evidence showed no genuine business activity in Freienbach, so Schwyz lacked taxing authority.