Common Seals, Signatures and Deeds in Hong Kong: How Companies Should Execute Documents

A Hong Kong company is not required to keep or use a common seal. The practical issue is therefore not whether the company owns a physical seal, but whether each document is approved and signed by the right persons, in the correct capacity and under a reliable execution record. This is especially important for foreign-owned companies, non-resident directors, bank documents, powers of attorney, security documents and cross-border transactions.

Why document execution still matters if the common seal is optional

The optional nature of the common seal gives Hong Kong companies flexibility, but it does not remove the need for corporate authority. Banks, auditors, counterparties, courts, registries and overseas advisers may still ask how a document was approved, who signed it, and whether the signatory had authority to bind the company.

A well-administered company should be able to produce not only the signed document, but also the board approval, signing authority, power of attorney or internal policy that supports the execution. This is a governance issue as much as a legal-formality issue.

Common seal: optional, not prohibited

Hong Kong law allows a company to keep and use a common seal, but it is no longer mandatory. A company should therefore avoid two opposite mistakes. First, it should not assume that a document is invalid merely because no seal was used. Secondly, it should not assume that possession of a seal means every formal document must be sealed.

The appropriate execution method depends on the Companies Ordinance, the company’s articles of association, the document type, the governing law, counterparty requirements and any filing or overseas-use requirements. For many private companies, the practical focus has shifted from owning a seal to maintaining an execution policy.

How a Hong Kong company may execute documents without a seal

Where a Hong Kong company executes a document without a common seal, the Companies Ordinance provides a statutory signing mechanism. A company with one director may execute a document by that director signing on behalf of the company. A company with two or more directors may execute a document by two directors, or by one director and the company secretary.

If the document is signed in accordance with the statutory mechanism and is expressed to be executed by the company, it has effect as if executed under the company’s common seal. The signing block should therefore be drafted carefully and should make clear the name of the company, the capacity of each signatory and whether the document is being executed by the company.

Ordinary contracts, formal execution and deeds are different

Not every commercial contract requires formal execution as a company document. Ordinary operational contracts may be signed by a person acting with actual, implied or apparent authority, depending on the facts. This may include sales contracts, supplier agreements, engagement letters and purchase orders.

That should not be confused with formal company execution under the statutory mechanism. Nor should either be confused with execution as a deed. Professional advisers should ask three questions: who has authority to bind the company, what execution method the document requires, and whether the document must be executed and delivered as a deed.

Execution of deeds by a Hong Kong company

Deeds require particular care. A Hong Kong company may execute a document as a deed without using a seal where the document is signed in accordance with the statutory signing mechanism, is expressed to be executed by the company as a deed, and is delivered as a deed.

In practice, deed execution may be relevant for powers of attorney, security documents, assignments, releases, settlement documents, property-related documents and cross-border documents where deed-style execution is requested. The main risk is often not the absence of a seal, but an incorrect execution block, unclear authority, missing board approval, or failure to satisfy delivery requirements.

Articles of association and legacy seal wording

A company’s articles of association should be checked whenever execution requirements are material. Older companies may have provisions dealing with use, custody or affixing of the common seal. The Companies Registry guidance indicates that existing companies may rely on the statutory alternative execution mechanism even where older Table A-style seal provisions exist, but the precise wording of the articles should still be reviewed.

For newly incorporated or foreign-owned companies, the articles should be aligned with the company’s practical signing arrangements, board approval process and document-retention procedures. This is particularly important where directors are outside Hong Kong or where documents are routinely used before banks, notaries, registries or overseas authorities.

When retaining a common seal may still be useful

A common seal may still be useful where a bank, counterparty, notary, overseas registry, foreign authority or professional adviser requests sealed execution as a matter of practice or internal policy. It may also be used as an internal governance control for high-value or formal documents.

The decision should be deliberate. If the company keeps a seal, it should control custody, approval for use, countersigning requirements and the register of sealed documents. If it does not keep a seal, it should still maintain an execution policy and authority records.

Electronic signatures and paperless corporate administration

Hong Kong company administration is moving further towards electronic and paperless processes. The Companies (Amendment) Ordinance 2025 supports paperless corporate communication for listed and unlisted companies. Separately, the Electronic Transactions Ordinance provides the general framework for electronic records and electronic signatures in Hong Kong.

For transactions not involving Government entities, a legal signature requirement can generally be met by an electronic signature if it is reliable, appropriate and agreed by the recipient. For transactions involving Government entities, a digital signature supported by a recognised digital certificate may be required. Electronic signature law should not be treated as a substitute for company execution analysis: the company must still check the document type, governing law, bank or counterparty requirements, filing requirements and overseas formalities.

Practical execution policy for foreign-owned companies

Foreign-owned Hong Kong companies should adopt a short practical policy that identifies who may sign ordinary contracts, who may formally execute company documents, who may sign deeds, when board approval is required, when a power of attorney may be used and whether electronic signatures are permitted.

The policy should also address common seal custody, if a seal is retained, the storage of executed documents, cross-border documents, documents intended for banks or foreign authorities, and the approval process for material transactions. The objective is not bureaucracy; it is the ability to prove authority and execution later.

Common execution mistakes

• Using a seal without board approval or without a record of its use.
• Signing a deed with ordinary contract wording and no delivery language.
• Allowing a director, employee or agent to sign high-value documents without recorded authority.
• Assuming that electronic signature acceptance by one counterparty means all documents can be signed electronically.
• Failing to check the articles of association, bank requirements or overseas formalities.
• Keeping no central record of signed contracts, deeds, powers of attorney and board approvals.

Practical checklist for business owners

• Confirm whether the company keeps a common seal and where it is stored.
• Review the articles of association for execution provisions.
• Identify which documents require ordinary signature, formal company execution or deed execution.
• Approve material documents by board resolution where appropriate.
• Use signing blocks that state the company name and signatory capacity clearly.
• Check counterparty, bank, registry, notary and overseas requirements before signing.
• Record the authority for each material signature.
• Maintain a central executed-documents file with board approvals and powers of attorney.
• Adopt an electronic-signature policy rather than signing electronically by default.

How Eltoma may assist

Eltoma may assist with reviewing the corporate administration file of a Hong Kong company, preparing execution checklists, coordinating company-secretarial records, reviewing authority documents and helping foreign-owned companies maintain organised signing and corporate record-keeping procedures. This support does not replace transaction-specific legal advice where a deed, security document, foreign-law document or court-facing document requires specialist review.

Flexibility requires control

Hong Kong law gives companies flexibility: a common seal is optional, documents can be executed without a seal, and electronic signatures may be available in suitable cases. That flexibility should not be confused with informality.

For investors, business owners and professional advisers, the practical question is whether the company can demonstrate who approved the document, who signed it, in what capacity it was signed, and where the executed record is kept. That is what makes document execution reliable in a modern, paperless and cross-border business environment.

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Frequently asked questions

Q: Does a Hong Kong company need a common seal?

A: No. A Hong Kong company is not required to keep or use a common seal. It may still choose to keep one, but the more important issue is whether the document is signed by authorised persons and supported by proper approval records.

Q: Can a Hong Kong company execute documents without a seal?

A: Yes. A Hong Kong company may execute documents without a seal using the statutory signing mechanism. A single-director company may sign through that director; a company with two or more directors may sign through two directors or one director and the company secretary.

Q: Are ordinary contracts the same as formal company execution?

A: No. Ordinary contracts may often be signed by a person with authority to bind the company. Formal company execution follows the statutory mechanism and is usually used for more formal company documents, deeds, bank documents or transaction documents.

Q: How does a Hong Kong company execute a deed?

A: A Hong Kong company may execute a deed without a seal if the document is signed in accordance with the statutory mechanism, is expressed to be executed by the company as a deed and is delivered as a deed.

Q: Can Hong Kong company documents be signed electronically?

A: Electronic signatures may be available in appropriate cases, but the company must check the document type, counterparty acceptance, government or bank requirements, governing law and any overseas formalities before relying on electronic signing.

Q: When might a common seal still be useful?

A: A seal may still be useful if requested by a bank, foreign authority, notary, registry or overseas counterparty, or if the board wants to reserve sealed execution for high-value or formal documents.

Q: What should a Hong Kong signing policy cover?

A: A signing policy should state who may sign ordinary contracts, who may execute company documents, who may sign deeds, when board approval is required, whether electronic signatures are permitted, and how executed records are stored.

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