nest Steuern is a software solution from KMS AG for cantonal and municipal tax authorities in Switzerland. It covers the full process of levying taxes and all tax types: maintaining the tax register, issuing assessments, billing the taxes owed and managing collection, down to the handling of uncollectible claims. The product can be configured for different organisational forms and has a Windows user interface with integrated Word and Excel. According to the vendor, it meets the eCH standard and exchanges data with the federal government and the cantons. A dashboard called My Nest is the starting point.
KMS AG has its head office in Kriens, Switzerland. Switzerland is not an EU member state but is an EFTA country with an adequacy decision from the European Commission. The website does not say where or how nest Steuern is hosted or installed, so ask the vendor. The privacy policy on the site covers only the website and refers to the Swiss Data Protection Act. The vendor gives no information about owners or a parent company.