Question juridique clé
Whether the taxpayers had a right to an oral hearing in the tax appeal proceedings
Solution extraite
No general right to an oral hearing exists under the Federal Constitution or the ECHR in this appeal procedure; the court may decide on the file and found no need for a hearing.
Motifs extraits
The taxpayers had sufficient opportunity to present their case, did not explain why a hearing would clarify disputed facts, and requested no evidence-taking.