Kernrechtsfrage
Whether the taxpayer was entitled to an interim assessment after moving cantons and suffering an income drop.
Extrahierter Entscheid
No interim assessment was required because the move to another canton with a different temporal assessment system is not, by itself, a statutory ground for interim assessment under Art. 45 DBG.
Extrahierte Begründung
The statutory grounds for interim assessment are exhaustive. A change of canton and system mismatch does not amount to the kind of fundamental change in earning circumstances required by the law.