Question juridique clé
Whether the federal tax appeal met the motivation requirements of Art. 42 LTF
Solution extraite
The appeal did not sufficiently engage with the cantonal court's reasoning and therefore lacked topically directed motivation.
Motifs extraits
The appellant merely repeated arguments already raised below, without showing why the canton court's analysis on retroactive disability pensions, set-off against social benefits, and the privileged tax rate violated federal or cantonal law.