If you are running a business in Hong Kong, you have to possess a Hong Kong business registration number. This article will provide you the details about the business registration number in Hong Kong and how you can search for it if your business registration certificate is not by your side.
Content Outline
Unique Business Identifier
Before we Introduce the business registration number, we must explain what a unique business identifier (UBI) is. The Unique Business Identifier (UBI) standardized business identifier implemented by the government. The UBI minimizes errors that can arise from using different identifiers for the same entity, thereby enhancing communication and data exchange between government departments and businesses.
In Hong Kong, the government has chosen to adopt the Business Registration Number (BRN) issued by the Business Registration Office of the Inland Revenue Department (IRD) as the UBI for companies and entities.

What Is The Business Registration Number?
In Hong Kong, a “Business Registration Number” (BRN) is composed of eight digits which can be found on the business registration certificate.
The Hong Kong Inland Revenue Department (IRD) is responsible for issuing the identity number. A Business Registration Number (BRN) is necessary for conducting business in Hong Kong.
When Do You Need To Use The Business Registration Number?
In Hong Kong, you need to use the Business Registration Number (BRN) in several key situations:
- Tax Filing: The BRN is required for filing tax returns and other documents with the Inland Revenue Department.
- Opening Bank Accounts: Financial institutions require the BRN to open business bank accounts.
- Contracts and Agreements: The BRN is often included in contracts, agreements, and other legal documents involving your business.
- Licensing and Permits: When applying for various business licenses and permits, the BRN is typically required.
- Compliance and Reporting: The BRN is necessary for compliance with regulatory requirements and for submitting annual returns.
- Transactions with Government Authorities: The BRN is used in dealings with government agencies, including applications for information or services.
- Business Identification: It’s essential for identifying your business in official communications and documentation.
Using the BRN consistently helps ensure compliance and facilitates smooth operations across various business activities.
Which Businesses Need a BRN?
A Business Registration Number (BRN) is necessary for nearly all types of businesses, except for those that are solely holding an office or employment without engaging in any business activities. The following industries are also exempt from having a business registration number:
- Activities conducted by charities
- Agriculture, market gardening, or fishing businesses (exemption does not apply to companies incorporated or required to register under the Companies Ordinance)
- Bootblack businesses
- Hawker businesses that require licenses under the Hawker Regulation, except for those operated inside the main structure of a building.
What Is The Difference Between The Company Registration Number and the Business Registration Number?
Here’s a comparison table highlighting the differences between a Business Registration Number (BRN) and a Company Registration Number (CRN):
Aspect | Business Registration Number (BRN) | Company Registration Number (CRN) |
---|---|---|
Purpose | Identifies businesses for tax and regulatory purposes | Identifies incorporated companies specifically |
Issued By | Inland Revenue Department (IRD) | Companies Registry |
Applicable To | All business types, including sole proprietorships and partnerships | Limited liability companies (LLCs) and corporations |
Legal Requirement | Required for all businesses operating in Hong Kong | Required only for incorporated entities |
Linkage | Linked to the Tax Identification Number (TIN) | Represents the legal entity’s incorporation |
Duration | Typically valid for one year, subject to renewal | Valid as long as the company remains incorporated |
Usage | Used for tax filing, opening bank accounts, and business transactions | Used for legal documentation and compliance |
Display Requirement | Must be displayed prominently at the business location | Not typically required to be displayed |
This table outlines the key differences between the BRN and CRN, emphasizing their distinct roles and requirements in Hong Kong’s business landscape.
Read Hong Kong Company Registration Number vs Business Registration Number for more information.
How Do You Apply For The Business Registration Number?
Applying for a Business Registration Number (BRN) involves the following steps:
- Determine Your Business Structure: Identify whether your business will be a sole proprietorship, partnership, or corporation, as this affects the application process.
- Prepare Required Documents:
- For Sole Proprietorships:
- Identity proof (e.g., Hong Kong Identity Card or passport)
- For Partnerships:
- Identity proof of all partners
- Partnership agreement (if applicable)
- For Corporations:
- Certificate of Incorporation
- Company memorandum and articles of association
- Identity proof of directors and shareholders
- For Sole Proprietorships:
- Complete the Application Form:
- Use the appropriate form available on the Inland Revenue Department (IRD) website or at their offices.
- Ensure all required fields are filled accurately.
- Submit the Application:
- You can submit the application online through the IRD eTAX system or in person at the Business Registration Office.
- For online submissions, create an eTAX account if you don’t already have one.
- Payment of Fees:
- Pay the required registration fee, which varies based on the business structure and validity period (typically one year).
- Payment can be made online or at the office.
- Receive Your BRN:
- Once your application is processed, you will receive your Business Registration Certificate, which includes your BRN.
- This typically takes a few days if submitted online or in person, provided all information is complete.
- Display the BRN: After receiving your BRN, ensure it is displayed prominently at your business location as required by law.
Important Notes
- Applications should be submitted within 30 days of commencing business operations to avoid penalties.
- Ensure all documents are accurate and up-to-date to streamline the application process.
Documents Required to Apply For The Business Registration Number
Required Documents for Local Companies:
- Incorporation Form: NNC1 or NNC1G
- Notice to Business Registration Office: IRBR1
- Articles of Association: A copy (if applicable)
- Fee Payment:
- $2,150 for a 1-year certificate
- $5,650 for a 3-year certificate
Required Documents for Non-Hong Kong Companies:
- Application Form: Form NN1 and any additional documents (if applicable)
- Notice to Business Registration Office: IRBR2
- Fee Payment: Mandatory payment required

What Happens If You Operate Without A BRN?
Any company that fails to apply for the business registration number will be considered guilty of an offense and may face a fine of HKD$5,000 and a potential imprisonment of up to 1 year.
If a person applies for business registration more than 12 months after starting their business, they must pay:
(a) the business registration fee and levy for the current year; and
(b) any outstanding business registration fees and levies for previous years as specified in section 7(3) of the Business Registration Ordinance.
Example
If a business started on October 5, 2021, but only applied for business registration on March 13, 2024, the total fees payable for a paper application would be:
Current Year:
Validity Period: October 5, 2023 to October 4, 2024: $250
Back Years:
Validity Period: October 5, 2022 to October 4, 2023: $250
Validity Period: October 5, 2021 to October 4, 2022: $250
Total Amount Payable: $750
How Do You Search For Your Business Registration Number?
Your Hong Kong Business Registration Number (BRN) appears on the “Business Registration Certificate” clearly. If you do not have the certificate by your side, but wish to search for the BRN, you can use the eTax service section on the Hong Kong government’s website. This service will allow the general public to look for business registration number (BRN) by typing the full English or Chinese business name and the location of the company into the database.

The process may take 10-20 minutes to complete.
Steps to Search the Business Registration Number
Step 1: Read the Personal Information Collection Statement (PICS) and Important Notes.
Step 2: Select the desired service – Conduct Business Registration Number Enquiry
Step 3: Enter your full company name and select the business address area. If there are multiple records matching your enquiry, you must select one of them to continue the search.

The business registration number will be displayed after the 3 steps above. If you simply wish to look for your business registration number, you will not need to proceed towards the rest of the steps.
How Can FastLane Help?
FastLane Group provides specializes in corporate services ensuring a seamless registration process for our client companies. Our expertise in business registration and compliance is at the service of making your experience smooth and effortless, giving you more time to engage in business growth. Feel free to contact us any time now to commence our services!