Question juridique clé
Whether the taxpayer's principal fiscal domicile in 2012 lay in Vaud or Valais
Solution extraite
The presumption that a single dependent employee domiciles at the work location was not rebutted; fiscal domicile remained in Vaud.
Motifs extraits
He lived and worked in Vaud for years, had a substantial apartment there, and his ties to Valais, though real, were not shown to be stronger than ordinary family ties. Weekend and holiday visits, and occasional support to his mother, were insufficient to displace the work-location presumption.