Hong Kong Tax ID Numbers

Identity Number (IN)

For Individuals

The Identity Number is 8 or 9 digits.

Business Registration Number (BRN)

For Entities

The Business Registration Number is 8 digits.

You can validate tax ID numbers with Tax ID Pro:

• Check tax ID numbers one at a time or with a spreadsheet.
• Learn how to integrate Tax ID Pro into your own software.
• Need to request W-9 or W-8 forms? Check out Nextform.