Question juridique clé
Whether the child maintenance contribution should be reduced to CHF 800.
Solution extraite
The challenge was inadmissible or unfounded because the appellant did not show that the appellate court’s income and budget assessment was arbitrary.
Motifs extraits
The court accepted the appellate court’s exclusion of the exceptionally low 2007 income year and its average-income method for a self-employed person; the complaint failed the federal pleading standards and relied in part on inadmissible new facts.