Business registration number in Hong Kong explained.

Posted in
Business registration number in Hong Kong explained

This guide explains everything you should know about the business registration number in Hong Kong.

When conducting business in Hong Kong, an important number that your business must obtain is the business registration number, as this number will allow you to legally function in Hong Kong.

Let’s find out more about this number.

What is a business registration number in Hong Kong?

The Inland Revenue Department (IRD) assigns a unique number to businesses upon registration, called the business registration number (BRN).

The BRN is used as a Tax Identification Number (TIN) and is needed to operate legally and for tax payments in Hong Kong.

How to obtain a business registration number?

To obtain a BRN, you will need to submit an application to the IRD and pay a fee. Once your application is approved, you will receive a Business Registration Certificate which contains your business BRN.

Get our in-depth guide covering everything you need to know about starting and managing your business in Hong Kong.

  • Discover foreign registration options & restrictions
  • Learn about available government incentives & promotions
  • Understand all compliance requirements
Incorporation Playbook


Business registration number format

The BRN consists of the first eight digits of the certificate number on the Business Registration Certificate.

Below is an example of the Business Registration Certificate with the BRN in the centre.

How to check your business registration number?

You can look for your businesses BRN in the GovHK Business Registration Number Enquiry website.

  1. Click enquire now.
  2. Click begin application.
  3. Once you have finished reading the notes, scroll to the bottom and click I have read the PICS and notes above.
  4. You will now see the Step 2 screen. Choose conduct business registration enquiry and continue
  5. On the Step 3 screen, enter your full company name, business address area and fill in the characters shown in the image, then click
  6. This new screen will show your business registration number along with the businesses name in Chinese or English.

Business registration number vs company registration number

What is a company registration number?

A company registration number (CRN) is a unique set of numbers used to identify and verify that your company has been registered with the Companies Registry.

To receive the CRN, you must submit an application to the Companies Registry, and upon approval, you will receive the Certificate of Incorporation, which will contain a seven-digit CRN at the top left.

What is the difference between the business registration number and company registration number?

The BRN is given by the IRD for all business entities.

The CRN is given by the Companies Registry to limited companies and foreign companies registered as a branch in Hong Kong.

Unincorporated bodies such as a sole-proprietorship or partnerships do not have a CRN but only have a BRN.


The BRN in Hong Kong should be obtained upon registration from the IRD. It is the eight-digit number on the Business Registration Certificate used for tax purposes. If you need any advice incorporating a company or obtaining the BRN, do not hesitate to contact Acclime.


Share this article

Need business support in Hong Kong?

Get a free 30-minute consultation on operating and growing your business in Hong Kong.

© Acclime Hong Kong | Privacy policy