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TIN Check for more than 140 countries


Hong Kong Hong Kong
Official country information

TIN validation guidance for Hong Kong

Access country-specific reference information, recognised formats and validation resources designed for compliance teams, finance departments and enterprise operations.

TIN Check Hong Kong


For individuals :

The TIN equivalent number is called “Hong Kong Identity Card (HKID) number” issued by the Immigration Department of Hong Kong, China.
Note: individuals with personal eTAX accounts may register a self-selected “TIN”. This number is only used for accessing e-services provided and should not be collected/provided for CRS purposes.

Format:

The HKID number consists of 8 (format: L999999L or L9999999) or 9 (format: LL999999L or LL9999999) characters. The last digit has 11 possible values from 0 to 9 and A.

For Entities :

The TIN equivalent number is the “Business Registration (BR) number” issued by Business Registration Office of Hong Kong, China.

What Exactly Is It?

TINs aren’t issued to taxpayers in Hong Kong.
The identifier the IRD refers to for taxation purposes is your Business Registration Certificate number.
You’re assigned this unique 8-digit sequence of numbers once you’ve gone through the initial process of incorporating your company, and it’ll feature on your Business Registration licence.

We’ve included a BR sample a bit further down to give you an idea of where this number is shown and the format your BRN takes.

Format:

The BR number consists of 8 digits, which are at the front of the business registration certificate number (e.g. 99999999-&&&-&&-&&-&).


Reference formats

Official example structures

Use the following examples as guidance for commonly recognised tax identification formats.

Individual
Entity

Trusted by professional and regulated sectors

The TIN Check ecosystem supports workflows where verification quality, auditability and speed are essential.

banks

Banks

Used to support identity, compliance and tax data validation in financial onboarding processes.
trading applications

Trading Applications

Supports tax identifier validation in digital investment, brokerage and trading environments.
billing softwares

Billing Software

Improves customer registration, invoicing accuracy and fiscal data consistency.
e-commerce

E-Commerce

Accelerates order capture and reduces manual tax identification handling in online sales operations.
trading companies

Trading Companies

Useful for cross-border supplier, client and partner tax identity verification workflows.
tax authorities

Tax Authorities

Supports structured reference and validation processes in public-sector and fiscal administration contexts.
tincheck dashboard
Operational management

Manage validation activity with a more professional dashboard experience

The TIN Check dashboard has been designed to offer a cleaner and more reliable operational interface for recurring validation needs. It supports organised usage, clearer workflows and a more suitable environment for business teams handling customer, supplier or compliance data.

For organisations requiring repeat validations, account-based access provides a more controlled and scalable experience.

Learn more about secure access →

Reference articles and country guidance

Explore selected country-specific content to better understand regional tax identification practices and documentation contexts.

United States tax id number

Tax ID Number in the United States

General guidance regarding the role and use of tax identification records in the United States.

United Kingdom VAT number

VAT Number in the United Kingdom

Introductory information regarding VAT registration references and UK business identification use cases.

Security and reliability

Designed with security-conscious workflows in mind

TIN Check applies layered controls to support a safer validation environment for business users. The platform is structured to operate with modern protection measures, controlled access paths and secure handling expectations suitable for professional usage.

More information