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TIN Check Switzerland

For individuals:

The OASI (Old Age and Survivors Insurance Number) consists of 13 digits (format: 756.9999.9999.99). The first 3 digits correspond to an initial country code that is “756” for Switzerland.

For entities

The TIN is called the UID-number (Unternehmens-Identifikationsnummer) and is centralized at a federal level. The TIN consists of 9 digits with the prefix CHE (format: CHE-999.999.999).

756.1234.5678.97 756.6158.4102.29 210000000003139471430009017 CHE 109.880.271 CHE 402.707.584