Validate Taiwan business IDs and national identification numbers.
Validate a Taiwan business registration number (統一編號).
Validate a Taiwan national identification number (身分證字號).
This tool only validates the format. It does not confirm whether the ID actually exists.
Enter a Taiwan business ID (統一編號, 8 digits) or national ID (身分證字號, 1 letter + 9 digits) and click Validate. The tool checks whether the number passes the official checksum algorithm. You can also use the random generator to create valid test IDs for development purposes.