Key legal question
Whether Art. 59(1) BV required the tax claim to be brought at the taxpayer's new domicile in Zurich.
Extracted holding
No. The claims were public-law tax claims, not private-law claims; Art. 59(1) BV did not apply.
Extracted reasoning
The Federal Court held that Art. 59(1) BV governs only private-law claims. Tax claims arise from sovereign authority and are therefore to be decided by the authorities of the canton whose law created them, even if the debtor had changed domicile.