Key legal question
Whether income from a share in a German limited partnership counts as income from self-employment subject to AHV contributions.
Extracted holding
Yes. Income from a participation in a foreign partnership without legal personality is self-employment income under the AHV rules.
Extracted reasoning
Art. 20(3) AHVV applies whenever the foreign entity is an asset-seeking association without legal personality; comparability with Swiss partnership law is irrelevant. The claimant's lack of management powers does not turn the income into mere capital yield.