Enterprise Identification Number UID

All active companies in Switzerland are given a standardised business identification number (UID). The use of the UID decreases the administrative burden on businesses and allows for a more efficient collaboration between authorities.

The FSO maintains the UID register to ensure correct allocation, management and use of the UID.

Under The UID in general you will find further information on the purpose and use of the UID, key milestones in the use of the UID as well as on the legal bases and data protection.

UID register

Via which interfaces can the register be accessed? How can a data collection be supplemented with the UID (batch request)? How can administrative offices keep their business data up to date? How many units are currently in the register?

Information for enterprises

How can I modify my data in the UID register? Who receives a UID? Who allocates the UID? What business data is kept in the UID register? FAQs.

Information for administrative offices

Which administrative offices (UID services) keep the UID in their data collections? What does an administrative office need to do to become a UID service? What access rights are allocated for the UID register?

UID newsletter

The UID team issues two newsletters for interested administrative offices and businesses.

Technical UID newsletter

The technical newsletter is sent if the UID register is amended and improved (release information). In addition, information is provided on technical faults and their remedies. To receive this newsletter, please send an email to uid-newsletter@bfs.admin.ch.

(The technical newsletter is offered in German and French).

General UID newsletter

The general UID newsletter contains general information and interesting facts on the UID. To receive the general newsletter, you can subscribe directly via FSO-NewsMail - Topic: “Numéro d’identification des entreprises (IDE)".

(The general newsletter is offered in German, French and Italian).

Further information

The following UID documentation is available in German, French and Italian:

UID entity request form

The following UID documentation is available:

The UID InfoAbo (French, German and Italian)
UID web service specifications (French and German)
Enterprise master data (French, German and Italian)

Please note that most documents are only available in French, German, and Italian.