Key legal question
Whether the appellants could avoid AHV contributions as non-employed persons based on legitimate reliance on incorrect official information.
Extracted holding
They could not rely successfully on the protection of legitimate expectations because, even assuming faulty information, they failed to show a non-reversible disposition caused by that information.
Extracted reasoning
Article 9 BV requires not only incorrect official advice but also detrimental reliance and a disposition that cannot be undone without disadvantage. The alleged later claim that the husband would have taken salaried employment was an inadmissible new allegation and, in any event, unproven.