Do you belong to a banking entity?

Hundreds of well-known banking entities around the world already use our api.
Tell us about your validation volume needs so that we can help you.
Click here for more information.

TIN Check Taiwan

Individuals :

Individual taxpayers who were not physically present or only stayed for a short period of time in the territory of the Republic of China (Taiwan) (hereinafter referred to as “R.O.C.”) may have neither National ID Card Number. In such a case, they can produce Tax Codes themselves as their TINs by reference to the coding principle without applying for issuance in advance from a tax authority.


A ten-digit code with the first an alphabetic letter followed by a nine-digit numeric string. The alphabetic letter is the area code of the municipality/county/city in which the individual applies for household registration. The leading number represents gender: “1” for males and “2” for females


A means of identifying a Government Uniform Invoice (GUI). A GUI number comprises two letters followed by eight digits. The tax authorities in Taiwan predefine these alphanumeric codes and issue them to company sales offices as a number range. It is up to the sales offices to apply for the number ranges periodically. In accordance with legislation in Taiwan, every sales invoice, credit memo, debit memo, down payment document, and purchase or sales return document has to have a GUI number. Their purpose is to track all the value-added tax (VAT) that a company pays or collects, and so are crucial to the creation of your VAT returns .


8 digits

Z256783650 M115187864 22099131 73251209
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.