Letter of Authority (Hong Kong)

A Letter of Authority in Hong Kong sets out the writer's position and the response or action requested from the recipient.

Hong Kong agency law derives from English common law, supplemented by equitable principles developed in decisions of the Court of First Instance and the Court of Appeal of the Hong Kong Special Administrative Region. The Contracts (Rights of Third Parties) Ordinance (Cap. 623) and the Powers of Attorney Ordinance (Cap. 31) provide the statutory framework for certain types of authority. Section 3 of the Powers of Attorney Ordinance (Cap. 31) sets out the requirements for a valid power of attorney executed as a deed. A letter of authority operates under general contract and agency principles rather than as a statutory power of attorney — it is more informal in nature and is used for a wide range of routine and business authorisations that do not require the formality of a deed under Cap. 31.

Letters of authority are used across a wide range of contexts in Hong Kong. In the financial sector, they authorise third parties to access accounts at HKMA-regulated banks, collect statements, or operate investment accounts on behalf of the principal under the Securities and Futures Ordinance (Cap. 571). In the legal and professional services sector, they authorise solicitors enrolled with the Law Society of Hong Kong, accountants registered with the Hong Kong Institute of Certified Public Accountants (HKICPA), or tax representatives to act in proceedings before the Inland Revenue Department (IRD) under the Inland Revenue Ordinance (Cap. 112), the Board of Review, the Companies Registry, or government departments. In the corporate sector, they authorise employees, officers, or agents to sign contracts, collect documents, or represent the company at specified meetings — supplementing the general authority conferred by the articles of association under the Companies Ordinance (Cap. 622). In personal matters, they authorise family members or friends to collect parcels, sign rental applications, or deal with government offices on the principal's behalf.

Unlike a power of attorney — which is a formal legal instrument requiring execution as a deed for certain purposes under Section 3 of Cap. 31 — a letter of authority is generally sufficient for specific, limited authorisations that do not involve dealings with real property or significant financial assets. For authorisations involving land transactions (conveyances, mortgages, or leases exceeding three years), a formal power of attorney registered with the Land Registry under Section 3 of the Land Registration Ordinance (Cap. 128) is required. For authorisations that must survive the principal's mental incapacity, an enduring power of attorney under the Enduring Powers of Attorney Ordinance (Cap. 501) must be used instead — Section 5 of Cap. 501 requires enduring powers to be in the prescribed form and executed before a solicitor.

The Personal Data (Privacy) Ordinance (Cap. 486), administered by the Office of the Privacy Commissioner for Personal Data (PCPD), applies where the agent will handle personal data on the principal's behalf — such as accessing medical records from a Hospital Authority institution, obtaining tax information from the Inland Revenue Department, or managing financial account data. Data Protection Principle 3 under Cap. 486 requires that the principal's personal data be used only for the purpose specified in the letter of authority.

Forms-legal.com provides a professionally drafted Hong Kong Letter of Authority template that clearly identifies the scope of authority, sets appropriate time limits, and protects both the principal and any third party dealing with the agent.

A Letter of Authority in Hong Kong is needed whenever a principal wishes to authorise another person or organisation to act on their behalf in a specific matter, and a formal power of attorney under Cap. 31 is not required.

Banking and financial authorisations: Authorising a family member, accountant, or financial adviser to collect bank statements, operate a specified account for defined transactions, or deal with a financial institution on the principal's behalf. Banks in Hong Kong — including HSBC, Hang Seng Bank, Bank of China (Hong Kong), and Standard Chartered — typically have their own authority forms but will also accept a properly drafted letter of authority for specific tasks such as collecting chequebooks or obtaining account information.

Government and regulatory dealings: Authorising a tax representative or solicitor to correspond with the Inland Revenue Department (IRD) regarding tax assessments, file tax returns, or appear at IRD hearings. Similarly, authorising a company secretarial firm or solicitor to deal with the Companies Registry for filing returns, changing directors, or obtaining certificates of incorporation.

Property-related authorisations: For matters short of a full land transaction — such as collecting keys, inspecting a property, or attending a management company meeting — a letter of authority is sufficient. For executing a sale and purchase agreement or mortgage, a formal power of attorney registered with the Land Registry is required.

Corporate authorisations: Authorising an employee, manager, or external agent to sign specified categories of documents — purchase orders, delivery receipts, supplier agreements below a specified value — on behalf of a company. This is distinct from the company's articles of association, which govern the general authority of directors. A letter of authority can fill gaps where a specific transaction requires individual authorisation beyond the general articles.

Medical and healthcare: Authorising a family member to access medical records, receive information from a doctor or hospital, or consent to non-emergency medical procedures on behalf of the principal. For emergency medical consent and long-term healthcare decisions where the principal may lack capacity, an enduring power of attorney under Cap. 501 is more appropriate.

Cross-border business: Authorising a local representative in Hong Kong to deal with Mainland Chinese counterparties, attend meetings, or sign documents where the principal (a foreign or Mainland-based entity) cannot be present. Hong Kong's common law framework for agency is well understood by international counterparties and widely used in cross-border transactions involving the Greater Bay Area.

A Hong Kong Letter of Authority should contain the following key elements to be legally effective and recognised by third parties.

Principal identification: The full legal name of the person or entity granting authority — for individuals, their full name as shown on their Hong Kong Identity Card (HKID), HKID number, and address; for companies, the company name, Companies Registry number, registered address, and the name and title of the authorised signatory (director or company secretary) signing the letter on the company's behalf.

Agent identification: The full name of the authorised agent — HKID number and address for individuals, or company name and registration number for corporate agents. Clear identification of the agent is essential so that third parties can verify the authority before acting on the agent's instructions.

Scope of authority: A clear, specific, and limited description of the matters in respect of which the agent is authorised to act. Broad or vague authority descriptions create legal uncertainty and may be construed narrowly by courts applying strict interpretation principles. The scope should identify: the specific transactions or dealings authorised; any monetary limits on the agent's authority; and the specific institutions or counterparties with whom the agent may deal on the principal's behalf.

Exclusions: Any specific matters that the agent is not authorised to do — for example, 'the agent is not authorised to withdraw funds from the account' or 'the agent is not authorised to enter into any obligation exceeding HK$50,000 without the principal's prior written consent'.

Duration: The period during which the authority is valid — a specific start date and end date, or a statement that the authority continues until revoked by written notice. Open-ended authority without an expiry date creates ongoing risk for the principal; a time-limited authority is generally preferable. The authority automatically terminates if the principal dies or loses mental capacity (for a simple letter of authority, not an enduring power of attorney).

Principal's responsibility: A statement that the principal takes responsibility for acts of the agent carried out within the scope of the authority and will honour commitments made by the agent within that scope. This assurance is important for third parties who need confidence that the principal will be bound by the agent's actions.

Revocation procedure: A statement of how the authority may be revoked — typically by written notice from the principal to the agent and to any affected third parties. Third parties who have acted in good faith in reliance on the authority before receiving notice of revocation are protected under common law principles.

Data privacy notice: Where the letter of authority involves the agent accessing or handling the principal's personal data (bank records, tax information, medical records), a brief data privacy notice should confirm that the agent is authorised to receive such data under the Personal Data (Privacy) Ordinance (Cap. 486) Data Protection Principle 3.

Principal's signature: The letter must be signed by the principal (or by the authorised signatory for a corporate principal). Unlike a power of attorney under Cap. 31, a letter of authority does not need to be executed as a deed — a witnessed signature is generally sufficient, though some institutions may require notarisation for international use.

Date: The date the letter is signed. The letter is effective from the stated date unless a different commencement date is specified. The forms-legal.com Letter of Authority (Hong Kong) template covers the mandatory elements under Powers of Attorney Ordinance (Cap. 31).