Hong Kong International Corporate Secretaries

Filing Form BIRS21 for onshore equity disposal gains in Hong Kong

How to use Form BIRS21 for Hong Kong's Tax Certainty Enhancement Scheme on onshore equity disposal gains, with filing guide.

BIRS21 at a glance

Official title
Tax certainty enhancement scheme for onshore equity disposal gains
Issued by
Inland Revenue Department

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Form BIRS21 Onshore Equity Disposal Gains Hong Kong

Form BIRS21 is the statutory application for a ruling under the Tax Certainty Enhancement Scheme. The Inland Revenue Department administers this scheme to give a taxpayer advance certainty on whether gains from disposing of onshore equity interests are chargeable to profits tax. File the form through the Business Tax Portal, supported by a detailed tax computation and the relevant financial statements.

Purpose of the Tax Certainty Enhancement Scheme

The Tax Certainty Enhancement Scheme reduces disputes with the Inland Revenue Department over the tax treatment of onshore equity disposal gains. Gains from selling shares in a Hong Kong company can be capital in nature and therefore not subject to profits tax. They can also be revenue in nature and chargeable. The scheme lets a taxpayer apply for a binding ruling before filing the relevant profits tax return. This ruling covers a specific disposal transaction and confirms whether the gain will be taxed.

BIRS21 Form Guide

The Inland Revenue Department publishes a guide setting out the required information for a ruling application. The application must include:

  • Full particulars of the taxpayer: the business registration number and tax file number.
  • Details of the equity disposal: the date of disposal, the number and class of shares sold, and the consideration received.
  • A description of the taxpayer's business activities and the nature of the shareholding.
  • A tax computation showing the gain's calculation.
  • Certified true copies of the sale and purchase agreement, the financial statements of the disposed company, and any other relevant documents.

Applications must be submitted electronically through the Business Tax Portal in iXBRL format. Paper filings are not accepted.

Onshore Equity Disposal Gains Tax

A potential liability under the Inland Revenue Ordinance (Cap. 112) arises when a taxpayer realises a profit from selling shares in a Hong Kong company. The gain's taxability depends on whether the shares were held as trading assets (revenue in nature) or as capital investments. The Tax Certainty Enhancement Scheme provides a mechanism for a binding ruling on the facts of a particular case; it does not change the substantive law. The Inland Revenue Department will consider factors such as the frequency of similar transactions, the holding period, and the taxpayer's business objects.

Hong Kong Form BIRS21

Hong Kong Form BIRS21 is the prescribed form for applications under the Tax Certainty Enhancement Scheme. The form requires the taxpayer to:

  • Identify the relevant assessment year.
  • State if the application is for a single transaction or a series of transactions.
  • Provide a detailed narrative of the facts, including the acquisition and disposal background.
  • Attach a tax computation and financial statements for the relevant period.
  • Declare that all information provided is complete and accurate.

The Inland Revenue Department issues a written ruling after reviewing the application. This ruling is binding on the department for the described transaction, provided the facts presented are accurate and complete.

Tax Certainty Scheme

The Tax Certainty Scheme is the broader framework for Form BIRS21. It covers other areas where taxpayers seek advance certainty, but for onshore equity disposal gains, it applies to eligible income from disposing of shares in Hong Kong-incorporated companies. The taxpayer must apply before the profits tax return is due for the year of assessment in which the disposal occurred. The Inland Revenue Department aims to issue a ruling within three months of receiving a complete application.

Eligibility for the Scheme

A taxpayer is eligible to apply under the Tax Certainty Enhancement Scheme if:

  • The disposal involves shares in a company incorporated in Hong Kong.
  • The gain is potentially chargeable to profits tax under Cap. 112.
  • The taxpayer has not yet filed the profits tax return for the year of assessment containing the disposal.
  • The taxpayer can provide all supporting documents, including financial statements and a tax computation.

The scheme is unavailable for disposals part of a tax avoidance arrangement or where the facts are materially incomplete.

Filing Process for Form BIRS21

The filing process for Form BIRS21 is conducted entirely through the Business Tax Portal. The taxpayer must:

  1. Log in to the Business Tax Portal with the taxpayer's eTAX account.
  2. Select "Tax Certainty Enhancement Scheme Application".
  3. Complete the online form, entering all taxpayer and disposal particulars.
  4. Upload the required supporting documents in iXBRL format, including the tax computation and financial statements.
  5. Submit the application and pay any application fee.

The Inland Revenue Department will acknowledge receipt and may request further information. Once a ruling is issued, the taxpayer must attach a copy to the relevant profits tax return (Form BIR51) for that assessment year.

Documents Required

The Inland Revenue Department requires the following documents to accompany Form BIRS21:

  • Certified true copies of the sale and purchase agreement for the equity disposal.
  • Financial statements of the disposed company for the two most recent financial years.
  • A tax computation showing the gain or loss calculation on disposal.
  • A copy of the taxpayer's business registration certificate.
  • Any other documents the taxpayer considers relevant.

All documents must be in English or Chinese, or have a certified translation.

Timeframe for a Ruling

The Inland Revenue Department will use its best endeavours to issue a ruling within three months of receiving a complete application. The timeframe may be extended if the application is incomplete or requires more information. The ruling is valid only for the transaction and assessment year specified. If the facts change, a new application is required.

Relationship with Profits Tax Return

Form BIRS21 is filed separately from the profits tax return. Apply for the ruling before the profits tax return is due for the relevant year of assessment. Once the ruling is received, report the gain in the profits tax return according to the ruling. If the ruling confirms the gain is not chargeable, exclude it from the tax computation. If the ruling confirms it is chargeable, include it in the assessable profits.

How to fill out Form BIRS21

Page one of the official form. Every field named below appears on it in the same order.

How to fill out Form BIRS21: page one of the Tax certainty enhancement scheme for onshore equity disposal gains form from the Companies Registry

Part 1: Applicant and Company Details

1. Name of Applicant
Enter the full legal name of the entity applying for the scheme. This must match the name on the Business Registration (BR) certificate.

2. Business Registration Number
Enter the 8-digit number printed on the BR certificate. Do not include the hyphen or any letters.

3. Correspondence Address
Provide the address where the IRD should send all letters regarding this application. Use a physical street address; a post office box is not acceptable.

4. Contact Person and Telephone Number
Name of the person the IRD can call with queries, plus a daytime phone number (including area code).

5. Tax File Number
Enter the 8-digit tax file number (BRC No.) shown on your BR certificate. If you have multiple BR certificates, use the one for the entity making this application.

6. Year of Assessment
Specify the year of assessment to which this application relates (e.g., 2023/24). This must be the year the onshore equity disposal gain arose.

Part 2: Transaction Details

7. Description of the Onshore Equity Disposal Gain
Briefly describe the nature of the gain (e.g., sale of shares in Company X, disposal of equity interest in a partnership). The description must be consistent with the accounts and tax return.

8. Date of Disposal
Enter the exact date the legal disposal took place (DD/MM/YYYY). Common error: use the date of the sale agreement or settlement, not the date of receipt of proceeds. If in doubt, refer to the contract note.

9. Gross Disposal Proceeds
State the total proceeds before any costs. This figure should match the amount shown in your audited accounts.

10. Cost of Acquisition
Enter the original cost of acquiring the equity interest. If the equity was acquired in stages, sum all acquisition costs.

11. Net Gain / (Loss)
Automatically calculated as gross proceeds minus cost. If a loss, put brackets around the figure.

Part 3: Declaration and Signature

12. Declaration
The applicant must tick the box confirming the information is true and complete. Only tick if you have read and understood the terms of the Tax Certainty Enhancement Scheme.

13. Signature of Applicant / Authorized Person
The application must be signed by the applicant (if an individual) or by a director or company secretary of the corporate applicant. A tax representative cannot sign this part unless they hold a written authorization.

14. Full Name of Signatory
Print the name of the person who signed in box 13. Ensure it matches the signature.

15. Date of Signature
Date the form was signed. This date should be on or after the date of disposal.

Important Notes

  • Continuation sheets: If you need more space for Part 2, attach a separate sheet headed "Continuation to BIRS21" and mark it with the applicant's name and BR number.
  • Who must sign: For a corporate applicant, the signatory must be a director or company secretary. A company stamp is not required unless the IRD has previously requested one.
  • Mutual exclusivity: This form is only for gains covered by the Tax Certainty Enhancement Scheme. Do not use it for exempt gains or gains already reported in a tax return.
  • Deadline: Not shown on this extract. Check the IRD's published notice for the scheme's application period.
  • Documents to attach: A copy of the BR certificate and, if a corporate applicant, a copy of the Certificate of Incorporation (if the company is less than three years old).

Do not complete boxes that are not listed in this extract. If the PDF you view shows additional fields, they are not part of this version of the form.

Download the current form - always file the version on the issuing authority's site, not a copy.

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