Question juridique clé
Whether the invalidity degree had to be determined using the extraordinary method with a functional comparison
Solution extraite
No. On the records, no invalidity-external factors affecting the business result were shown, so the ordinary income comparison method was permissible.
Motifs extraits
For self-employed persons, the extraordinary method is only required when hypothetical earnings cannot be reliably determined or are distorted by invalidity-external factors. The file showed none.