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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
tincheck app
tincheck dash


We are excited to announce the release of the latest version of the TIN-Check Dashboard, the premier tool for conducting TIN checks.
This new version features a sleek, modern design and enhanced functionality to make TIN checks even more convenient and efficient.

The TIN-Check Dashboard is the ultimate solution for verifying TINs and ensuring compliance.

Upgrade to the latest version today and experience the power and convenience of the TIN-Check Dashboard.

Learn More ->

API Full security

At TIN Check, we take the security of our API very seriously.
We have implemented a number of measures to ensure that our API is secure and protected against potential threats.
These measures include 256-bit TLS/SSL encryption.
We are committed to maintaining the highest standards of security and will continue to invest in the latest
technologies and best practices to keep our API safe and secure for all users.