Notarization & Apostille Services Hong Kong | Notary Public | Deep Blue CPA

Notarization, Legalization & Authentication Explained

When a Hong Kong document needs to be used overseas, it typically goes through three stages — notarization, legalization, and in some cases, consular authentication. Understanding the difference is essential to ensure your documents are processed correctly.

What is Notarization?

Notarization is the process of certifying a document by a Notary Public — a Hong Kong solicitor who holds an additional international notary qualification. The Notary Public verifies the authenticity of the document, witnesses signatures, or certifies that a copy is a true reproduction of the original.

Important: Not all solicitors are Notaries Public. Only solicitors who are registered with the Hong Kong Society of Notaries and hold an international notary qualification may perform notarial acts. At Deep Blue CPA, we work exclusively with qualified Notaries Public to ensure your documents are properly notarised.

What is Legalization?

Legalization refers to the entire process of making a Hong Kong document legally valid for use in another country. For countries that are parties to the Hague Apostille Convention of 1961, this process is simplified:

1. A Notary Public notarises the document (verifies authenticity and attaches a notary certificate).
2. The High Court of Hong Kong attaches an apostille certificate, which confirms the authenticity of the Notary's signature and seal.
3. The document is now legally valid in all other Hague Convention member countries — no further steps are required.

What is Authentication?

For countries that are not parties to the Hague Apostille Convention, additional consular authentication is required. Different consulates have different requirements:

• Direct authentication: Some consulates accept documents notarised by a Notary Public directly, without requiring a High Court apostille.
• Two-step authentication: Other consulates require the document to first receive a High Court apostille, and then be submitted to the consulate for further authentication.

At Deep Blue CPA, we liaise directly with consulates to confirm the exact requirements for your destination country.

Our Notarization & Apostille Services

• Notary public arrangement — We coordinate with qualified Notaries Public in Hong Kong for proper notarial attestation of your documents.
• High Court apostille application — We submit notarised documents to the High Court Registry for apostille certification.
• Consular authentication guidance — We confirm whether your destination country requires direct consular authentication or a High Court apostille first.
• Document collection and return — We collect apostilled documents from the High Court and arrange delivery to you.

The Apostille Process in Hong Kong

1. Document review — We review your documents and confirm the exact requirements for your destination country.
2. Notarisation — Your documents are referred to a Notary Public, who will either notarise the original documents or certify true copies and attach a notary certificate.
3. High Court submission — We submit the notarised documents to the High Court Registry along with the apostille application.
4. Apostille issuance — The High Court attaches the apostille certificate, verifying the Notary's signature and seal.
5. Document return — We collect the apostilled documents and notify you for collection or arrange delivery.

When Do You Need an Apostille?

Common situations requiring apostille certification include:

• Business overseas — Registering a Hong Kong company or branch in another country, opening foreign bank accounts, or bidding on international contracts.
• Studying abroad — Submitting academic certificates and transcripts to overseas universities or professional bodies.
• Moving abroad — Visa applications, work permits, or immigration processes requiring certified personal documents.
• Marriage overseas — Certifying documents for marriage registration in another country.
• Legal proceedings — Presenting Hong Kong documents in foreign courts or administrative tribunals.

Frequently Asked Questions

What is an apostille and when is it needed?

An apostille is a certificate issued under the Hague Apostille Convention of 1961 that authenticates the signature and seal of a public official on a document so it can be recognised in another member country. Hong Kong has been a party to the Convention since 1965 through the UK's ratification. An apostille is needed when you have a Hong Kong document that must be produced in another Hague Convention country.

What is the difference between a CPA certified true copy and an apostille?

A CPA certified true copy confirms that a photocopy matches the original document. An apostille is a separate certificate issued by the High Court that verifies the authenticity of the signature and seal of the notary public who certified the document.

How long does the apostille process take in Hong Kong?

The High Court typically processes apostille applications within 3 to 5 working days. Our total turnaround time, including document review, notary public service, and High Court submission, is usually 5 to 7 working days.

Which countries accept apostille certification from Hong Kong?

Apostille certificates issued in Hong Kong are accepted by all 120+ member countries of the Hague Apostille Convention, including Australia, Canada, France, Germany, Italy, Japan, Singapore, South Korea, Spain, the United Kingdom, and the United States. For non-member countries, consular authentication is required instead.

Can you handle the entire apostille process on my behalf?

Yes. We manage the full process — from arranging notary public services, to submitting the apostille application to the High Court Registry and collecting the apostille certificate on your behalf.

What is the difference between notarization and authentication?

Notarization is the first step, performed by a Notary Public, who verifies and certifies the document. Authentication is an additional step required by some countries (especially non-Hague Convention members), where a consulate or embassy verifies the notarization. For Hague Convention countries, the apostille from the High Court replaces the need for consular authentication.

Related Services

• CPA Certified True Copy — Document certification by our AFRC registered CPA for non-notarial purposes.
• Chinese Attesting Office — Notarisation for documents destined for Mainland China.
• Vietnam Consular Legalisation — Consular legalisation for documents used in Vietnam.