Japanese Birth Certificate Explained: Koseki, Certificate of Acceptance of Birth Registration, Apostille and Legalization

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• 日本語

A birth certificate is often required when completing procedures overseas.

However, Japan does not have an official government-issued document called a “Birth Certificate” in the same way many other countries do. As a result, many people are unsure which Japanese document should be prepared instead. In addition, the requirements may vary depending on the destination country or the authority requesting the document. If the wrong document is prepared, it may be rejected, and you may need to obtain and authenticate the document again.

This page explains how a Japanese birth certificate is generally understood for overseas procedures and how to properly prepare the required Japanese documents for submission abroad, based on practical experience with Apostille and Embassy Legalization procedures.

Which Japanese Documents Can Be Used as a Birth Certificate?
Japanese documents considered as Birth Certificate

Which Japanese Documents Can Be Used as a Birth Certificate?
Japanese documensts considered as Birth Certificate

As explained above, Japan does not issue a standalone official document named a “Birth Certificate.” Therefore, when a foreign authority requests a “Birth Certificate,” the following Japanese documents are commonly used as alternative proof of birth.

・Family Register Certificate / Koseki Tohon (Certificate of All Records) (戸籍謄本)
　This is one of the most common Japanese documents used to prove a person’s birth, parent-child relationship, and other basic family status information. A Japanese family register may include records from birth to death.

・Certificate of Acceptance of Birth Registration(出生届受理証明書)
　This document certifies that a birth registration was officially accepted by a municipal office in Japan. It is often used as direct proof that the birth was properly reported and recorded in Japan.

・Certificate of Registered Matters of Birth Registration (出生届記載事項証明書)
　This document certifies the information contained in the original birth registration submitted to the municipal office, including the date and place of birth, as well as the parents' details. In practice, it can be regarded as an official certified copy of the birth registration filed in Japan.

In practice, a Family Register Certificate (Koseki Tohon) is sufficient in many cases. However, some foreign authorities specifically require documentary proof of the birth itself rather than proof of family status. In such cases, they may request a Certificate of Acceptance of Birth Registration or a Certificate of Registered Matters of Birth Registration instead.

The appropriate document depends entirely on the requirements of the authority requesting it. For this reason, we strongly recommend confirming the required document with the receiving authority before obtaining and authenticating any Japanese documents.

Based on our experience handling international document authentication cases, banks and government authorities are more likely to require documents containing detailed birth information, such as a Family Register Certificate (Koseki Tohon) or a Certificate of Registered Matters of Birth Registration. By contrast, a Certificate of Acceptance of Birth Registration merely certifies that the birth registration was officially accepted by the municipal office. Because it does not contain the full details of the birth registration itself, some authorities may not accept it for important legal or administrative procedures.

How to Prepare a Japanese Birth Certificate for Overseas Use
How to obtain Birth Certificate in Japan

How to Prepare a Japanese Birth Certificate for Overseas Use
How to obtain Birth Certificate in Japan

When preparing a Japanese birth certificate for overseas use, it is important not only to obtain the required document, but also to understand how each document can be obtained and what restrictions may apply.

1. Confirm which document is required by the receiving authority
   Whether a Family Register Certificate (Koseki Tohon) is sufficient, or whether a Certificate of Acceptance of Birth Registration or a Certificate of Registered Matters of Birth Registration is required, depends on the requirements of the receiving authority. The required document should be confirmed before starting the preparation process.
2. Obtain the required document from the municipal office in Japan
   The relevant document must be obtained from a city, ward, town, or village office in Japan. However, the eligible applicants and conditions may differ depending on the type of document.

・Certificate of Acceptance of Birth Registration
　In principle, this document can only be obtained by the person who filed the birth registration, usually the father or mother. The child whose birth was registered, or an agent authorized by the child, generally cannot obtain this document.

・Certificate of Registered Matters of Birth Registration
　This document certifies the contents of the original birth registration. It may be obtained by the child or by an agent authorized by the child. However, due to retention period limitations at the municipal office, this document may no longer be available in some cases.

・Family Register Certificate / Koseki Tohon (Certificate of All Records)
　This document may be obtained by the person concerned or by a person listed in the same family register. If an agent obtains the document on behalf of the applicant, a power of attorney is generally required. However, legal professionals in Japan, such as administrative scriveners, may be able to obtain the document without a power of attorney through a professional request system, depending on the purpose of the request.

These documents can usually be obtained at the municipal office counter. In many cases, they can also be requested by mail, which is useful when the relevant municipality is located far away. However, when requesting documents by mail in Japan, the application fee is often paid using a fixed-amount postal money order purchased at a post office. This can make the process somewhat time-consuming, especially for those who are unfamiliar with Japanese administrative procedures.

Because the eligibility requirements and application methods differ depending on the document, it is important to check the requirements in advance and prepare the appropriate Japanese document carefully.

How to Obtain an Apostille or Embassy Legalization for a Japanese Birth Certificate
Authentication Process for Birth Certificate in Japan

How to Obtain an Apostille or Embassy Legalization for a Japanese Birth Certificate
Authentication Process for Birth Certificate in Japan

・When Obtaining an Apostille for a Japanese Birth Certificate

A Family Register Certificate (Koseki Tohon), Certificate of Acceptance of Birth Registration, and Certificate of Registered Matters of Birth Registration are all official documents issued by Japanese government authorities. Therefore, if you are obtaining an Apostille for the original Japanese document itself, you can generally apply directly to the Ministry of Foreign Affairs of Japan without going through a notary public.

However, the procedure is different if the receiving authority requires the Japanese original and a foreign-language translation to be bound together and authenticated as one set.

A foreign-language translation is not an official document issued by a Japanese government authority. It is treated as a private document prepared by an individual or translator. Therefore, in order to authenticate the original Japanese document and the translation as one combined set, the documents must first be notarized by a notary public in Japan. After notarization, a notarial seal certification must be obtained. This process allows the bound set of the original document and translation to become eligible for an Apostille by the Ministry of Foreign Affairs of Japan.

・When Obtaining Embassy Legalization for a Japanese Birth Certificate

If the destination country is not a member of the Hague Apostille Convention, Embassy Legalization may be required instead of an Apostille.

When obtaining Embassy Legalization for a Japanese birth-related document issued as an official public document, the document must first receive official seal certification from the Ministry of Foreign Affairs of Japan. After that, Embassy Legalization is obtained from the embassy or consulate of the destination country in Japan.

On the other hand, if the receiving authority requires the Japanese original and a foreign-language translation to be bound together and legalized as one set, the entire set, including the translation, must be notarized in the same way as the Apostille procedure.

In this case, the original document and translation are first notarized by a notary public. A notarial seal certification is then obtained, followed by official seal certification from the Ministry of Foreign Affairs of Japan. Finally, Embassy Legalization is applied for at the embassy or consulate of the destination country in Japan.

Differences in Apostille and Embassy Legalization Procedures by Country
Requirements vary by destination country

Differences in Apostille and Embassy Legalization Procedures by Country
Requirements vary by destination country

When submitting a Japanese birth certificate overseas, one of the main differences between countries is how the translation is handled.

A Family Register Certificate (Koseki Tohon), Certificate of Acceptance of Birth Registration, and Certificate of Registered Matters of Birth Registration are all issued in Japanese. Therefore, depending on the receiving authority, a foreign-language translation may be required in addition to the original Japanese document.

In general, translation requirements fall into the following two patterns.

・The original document and translation are authenticated together in Japan

Some authorities require the Japanese original and a foreign-language translation to be bound together and authenticated as one set, either by Apostille or Embassy Legalization.

In this case, because the translation is not issued by a public authority, it usually needs to go through notarization and related procedures before the original document and translation can be authenticated as one combined document.

This type of submission may be required in countries and regions where English is widely used. For example, authorities in the United States, Canada, the Philippines, Singapore, Malaysia, and the UAE may request authentication of the original Japanese document together with an English translation.

・Only the original document is authenticated in Japan, and the translation is prepared in the destination country

In other cases, the Japanese original is first authenticated directly by Apostille or Embassy Legalization in Japan, and the document is then sent to the destination country for translation by a local translator or designated translator.

Under this method, only the original Japanese document is authenticated in Japan, while the translation is arranged in the destination country.

This type of procedure may be required in countries such as Italy, Portugal, Russia, and Thailand.

Confirm the Requirements Before Starting the Authentication Process

As explained above, the translation and authentication requirements for a Japanese birth certificate vary depending on the destination country and the authority requesting the document.

Before starting the process, you should confirm the following points with the receiving authority:

• Whether only the original Japanese document requires an Apostille or Embassy Legalization.
• Whether the original Japanese document and its translation must be bound together and authenticated as one set.
• Whether the translation must be prepared in Japan.
• Whether the translation must be prepared by a local or designated translator in the destination country.

If these requirements are not confirmed in advance, the document may be rejected by the receiving authority, even after the Apostille or Embassy Legalization has already been obtained.

Japan Apostille Center (JAC) is a specialized document authentication service that handles apostille applications issued by the Ministry of Foreign Affairs of Japan, as well as consular legalization procedures at foreign embassies and consulates in Japan.

We provide comprehensive support for the entire authentication process, including verification of country-specific procedures and application requirements, translation into English and other languages, notarization at notary offices, authentication by the Ministry of Foreign Affairs, submission to embassies and consulates, and international shipment of the documents after legalization.

Our center was established based on the practical experience in international documentation gained through our administrative scrivener practice, which handles immigration and residency matters for foreign nationals in Japan.

With expertise and extensive practical experience in the field of document authentication, we have handled a wide range of cases related to international business transactions, overseas relocation, visa applications, marriage procedures, study abroad, company establishment, and other matters requiring document authentication. As a result, we have built a strong reputation as a specialized service provider for international document authentication.