Japan CN Validator
Validate Japanese Corporate Number
Enter a Japanese Corporate Number to verify its validity.
About this Validator
This tool validates Japanese Corporate Numbers according to National Tax Agency requirements.
The validator checks if a given Corporate Number follows the correct structure and verifies its check digit.
This validation only confirms if a Corporate Number follows the correct format. It does not verify if the number is actually registered with the National Tax Agency.
What is a Corporate Number (法人番号/hōjin bangō)?
Corporate Number Structure: • 13 digits total • First digit: Non-zero check digit • Next 12: Organization identifier • Numeric only • Fixed length
Validation Features: • Length verification • Check digit validation • Format compliance • Pattern verification • Numeric validation
Used for: • Tax returns • Employment forms • Social insurance • Business registration • Official documents • Public identification
Important Notes: • Publicly available • Mandatory for organizations • Implemented in 2015 • Published by NTA • Official standard
If you need to generate a Corporate Number for testing purposes, here is a Japan Corporate Number Generator