Questione giuridica chiave
Whether the proceeds from the sale of the properties constituted income from self-employment or private asset management for AHV contributions.
Decisione estratta
Not every gain earned through a simple partnership is self-employment income; it must be established that the partnership itself carried on an economic activity. The case was not sufficiently clarified on that point.
Motivazione estratta
A simple partnership may serve any purpose and there is no presumption of an economic purpose. The cantonal court relied only on co-ownership of the properties and did not determine whether the partnership was engaged in business activity.