South Korea BRN Validator
Validate Korean Business Registration Number
Enter a South Korean Business Registration Number (사업자 등록 번호) to verify its validity.
About this Validator
This tool validates South Korean Business Registration Numbers according to official requirements.
The validator checks if a given BRN follows the correct structure as specified by the National Tax Service.
This validation only confirms if a BRN follows the correct format. It does not verify if the number is actually registered with Korean tax authorities.
What is a BRN (사업자 등록 번호)?
BRN Structure (10 digits: XXX-XX-XXXXX): • XXX: Tax office number • XX: Type of business • XXXX: Serial number • X: Check digit Alternative TIN: Corporation Registration Number • 13 digits: XXXXXX-XXXXXXX • Issued by Court • For legal entities
Validation Features: • Length verification • Format check • Office code validation • Business type check • Check digit validation • Pattern compliance
Used for: • Business registration • Tax returns • Corporate taxation • Official documents • Legal transactions • Business certificates
Important Notes: • Official identifier • Tax office issued • Entity specific • Business standard • District based
If you need to generate a BRN for testing purposes, here is a South Korea BRN Generator