Questione giuridica chiave
Whether the monthly offset against the disability pension violated the claimant's minimum subsistence because of an alleged additional CHF 200 dietary expense.
Decisione estratta
The alleged additional dietary expense was not sufficiently proven and could not be taken into account in the subsistence calculation.
Motivazione estratta
Only actually incurred and sufficiently substantiated expenses count for the minimum vital calculation. The medical and other documents did not concretely establish the nature or amount of the alleged extra costs, and no natural presumption justified adding them to the basic couple allowance.