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Business identification number (UID)

The business identification number (UID) enables companies to use a single number to identify themselves for all contacts with the administration and all administrative units. Data can thus be exchanged efficiently and reliably between the business community and the administration.

Data in a reference register

There are numerous different identification numbers for companies in the public administration, which means that data from many administrative processes cannot be used in a coordinated manner. This results in duplication, which puts an unnecessary administrative burden on companies and the administration. The Federal Statistical Office established a uniform means of identification for companies within the framework of the eGovernment project B1.05 "Uniform business identifier". The UID lightens the burden for companies in their exchanges with the authorities and simplifies the exchange of information between the Confederation, cantons and communes. Because the updating of data is performed in only one reference register, the administrative burden is significantly reduced.

Introduction status

The UID has been introduced in the administration's large company registers. The commercial register and VAT register have been using the UID since 2014. The UID has been integrated at each of the some 90 AHV compensation funds since the start of 2016. The same applies for the Federal Customs Administration. It is now mandatory for Swiss companies to provide the UID when importing and exporting. The UID is increasingly being used to identify companies in the private sector as well. Many companies have also added the UID to their customer bases.

The following overview shows the progress made on introducing the UID in various registers.

UID introduction for the more than 300 administrative units (UID offices), with comprehensive duties in accordance with UID legislation (as at May 2016)

Documentation and further information

Information on the UID
Information on the UID-register


Federal Statistical Office
Espace de l'Europe 10
CH-2010 Neuchâtel

Hotline: 0800 20 20 10 (Monday to Friday 08:30-11:30 / 14:00-16:00)

Email: uid@bfs.admin.ch