Documents Required to Marry a Foreign National in Japan｜What to Do When They Cannot Be Obtained

For a Japanese national and a foreign national marrying in Japan, the first hurdle is almost always the same question: what exactly must be produced before the municipal office will accept the marriage registration? People whose home-country certificate simply cannot be obtained, whose passport has expired, or who have no residence status are frequently told at the counter, "We cannot accept this without that document," and the process stops there.

Yet the document most often demanded — the Certificate of Legal Capacity to Contract Marriage — is not a mandatory attachment required by any statute. Where it cannot be obtained, Japanese family-registration practice provides an alternative method of proof. This article sets out the required documents and then explains, on the basis of information current as of August 2026, how to negotiate with the municipal office and the Legal Affairs Bureau when the paperwork cannot be completed.

The legal framework that applies

The substantive requirements for a valid marriage — marriageable age, absence of a subsisting marriage, and so on — are governed, for each party, by that party's national law (Act on General Rules for Application of Laws, Article 24(1)). The formalities of marriage are governed by the law of the place of celebration; however, where the marriage is celebrated in Japan and one party is Japanese, the Japanese formalities must be followed (Article 24(2) and the proviso to Article 24(3)). In practice this means that a marriage registration filed with a Japanese municipal office is unavoidable.

A marriage takes effect upon registration in accordance with the Family Register Act (Civil Code, Article 739(1)). As to where the registration is filed, a registration concerning a foreign national is filed at the place where the person filing it is located (Family Register Act, Article 25(2)), and that "place" is understood to include a temporary place of stay.

The consequence of this structure is that the municipal review centres on one question: does the foreign party satisfy the requirements of his or her own national law? The Certificate of Legal Capacity to Contract Marriage is simply the means by which that is ordinarily demonstrated.

The documents required

For a marriage registered under Japanese formalities, the basic documents are as follows.

Japanese party

• Marriage registration form, signed by two adult witnesses
• Identification (driving licence, My Number card, passport, etc.)
• Family register certificate — under the amended Family Register Act in force from 1 March 2024, staff at an office other than the registered domicile can now verify the family register directly, so attachment is in principle no longer required. Practice still varies between municipalities, so confirmation in advance is advisable

Foreign party

• Certificate of Legal Capacity to Contract Marriage, with a Japanese translation
• Passport, as proof of nationality, with a Japanese translation
• Birth certificate, where requested, with a Japanese translation
• Residence card, certificate of residence, and similar documents where requested

Any document drawn up in a foreign language must be accompanied by a translation identifying the translator (Family Register Act Enforcement Regulations, Article 63). No qualification is required of the translator, and the parties themselves may translate. Some offices nonetheless require the translation to state the date of translation and the translator's name and address, and some require that seals of authentication and marginal notations also be translated, so the formatting should be confirmed with the office concerned.

Points to watch by nationality

Both the name of the document corresponding to a certificate of legal capacity and the authority that issues it differ considerably from country to country. The following are the points at which applicants most often come unstuck.

• China — the usual combination is a declaration issued by the Chinese consulate in Japan together with a notarial certificate attesting the signature. Since the Apostille Convention entered into force between Japan and China on 7 November 2023, the Chinese Embassy in Japan has ceased consular legalisation, so the authentication route differs from what it once was.
• Korea — a marriage relationship certificate and a basic certificate are used. Both generally must be the "detailed" version; obtaining the general or abridged version is a common and costly mistake.
• Vietnam — the Vietnamese Embassy or Consulate-General in Japan issues the certificate, but only on the basis of a certificate of marital status issued by the People's Committee in Vietnam (an original issued within the preceding six months) together with evidence of single status since arrival in Japan. Where the latter takes the form of a Japanese municipal certificate that no marriage has been registered, it must cover the entire period of residence in Japan, which means collecting certificates from several municipalities if the applicant has moved.
• Philippines — the Legal Capacity to Contract Marriage (LCCM) issued by the Philippine Embassy in Tokyo is used. A CENOMAR is valid for only six months from issue. Because Philippine law does not permit divorce, an applicant with a prior Philippine marriage will need a final judgment of nullity or annulment, and this is where matters most often stall.
• Thailand — the Royal Thai Embassy in Tokyo and the Thai consulates ceased issuing certificates of legal capacity on 1 April 2020. The current route is a certificate of marital status issued by the Thai district office, legalised by the Thai Ministry of Foreign Affairs and then legalised by the Embassy within three months of that legalisation.
• United States — the United States government does not issue a certificate of legal capacity to marry. Moreover, since 1 September 2025 the US Embassy and consulates in Japan have discontinued the notarisation of the affidavit of competency to marry that they formerly provided. The alternative is an affidavit notarised by a notary public in a US state, with an apostille wherever possible; whether a given municipal office will accept it must be confirmed in advance.
• Taiwan — the Taipei Economic and Cultural Representative Office in Japan issues a certificate of legal capacity. Applicants without household registration in Taiwan use a sworn declaration instead, but the Representative Office itself warns that some municipalities will not accept that declaration.

For Nepal, Myanmar, Mongolia, Sri Lanka, Bangladesh and a number of other countries, the name of the relevant document often cannot be confirmed from official mission sources. For these, a direct enquiry to the embassy or consulate is the necessary starting point. The Embassy of Japan in Nepal has issued a formal warning about operators who claim to handle marriage procedures, supply forged certificates and then demand large fees, so the channel through which documents are obtained also warrants care.

What to do when the certificate cannot be obtained

This is the heart of the matter. The essential point is that the Certificate of Legal Capacity to Contract Marriage is not a mandatory attachment under any statute. In family-registration practice, the foreign party bears the burden of demonstrating to the mayor that the requirements of his or her national law are satisfied, and attaching the certificate is simply the ordinary method of doing so (Civil Affairs Bureau Director-General's Reply, Min-Ko No. 1264 of 30 May 1949).

It follows that an inability to obtain the certificate does not mean that the requirements are unmet. The method of proof simply reverts to first principles: the content of the foreign law and the facts of the person's civil status must be established individually. Three alternative routes are recognised in practice.

• Sworn declaration — a declaration made before a consul of the person's own country, to the effect that the declarant has reached marriageable age and is under no impediment under national law, and signed by that consul.
• Marriage certificate — where a marriage has been celebrated in Japan under the formalities of the foreign party's national law, the certificate issued in respect of it may be treated as comprehensive proof that the requirements are satisfied.
• A statement of declaration and supporting documents — a written statement by the party, supported by evidence of nationality, a birth certificate, documents evidencing civil status, and a copy of the relevant provisions of the foreign law with a translation. This is the mainstream route in practice.

There is no prescribed form for the statement. In practice it sets out: the reason the certificate cannot be produced (no issuing system exists, the home authorities do not maintain records of civil status, issue has been refused, the person cannot travel to the home country, and so on); that the declarant is currently single and the marriage will not be bigamous; that the declarant has reached marriageable age under national law and is subject to no other impediment; the particulars of civil status, including name, date of birth, nationality and parents' names; and a statement that the contents are true, with the declarant's signature.

Administrative precedents have repeatedly accepted registrations on the basis of a statement alone, or a statement combined with a birth certificate and similar documents: a Barbadian national whose home authorities did not maintain civil-status records (Reply Min-Ni No. 2644 of 30 March 1995), a Romanian national whose country had no issuing system (Reply Min-Ni No. 3763 of 30 June 1992), and a Moroccan national who had been refused issue (Reply Min-Ni No. 3458 of 2 July 1987). For Korean and Taiwanese residents of Japan, a circular of long standing permits acceptance on the basis of a statement together with documents evidencing civil status (Circular Min-Ko No. 245 of 9 February 1955).

Negotiating with the municipal office and the Legal Affairs Bureau

Where a doubt arises in the handling of family-registration business, the mayor may seek instructions from the Minister of Justice through the competent Legal Affairs Bureau (Family Register Act Enforcement Regulations, Article 82). This is the referral procedure known in practice as juri-ukagai. Most marriage registrations with incomplete documentation are routed into it.

What that means in practice is documented in the January 2022 report of the Administrative Evaluation Bureau of the Ministry of Internal Affairs and Communications, which examined 181 referrals concerning international marriage registrations answered by 16 Legal Affairs Bureaus between April 2017 and the end of October 2020. The average time from referral to reply was 40.5 days; 14 cases took more than 100 days; and the longest took 528 days. The report also found that, because the Bureaus had no internal criteria for decision, instructions on comparable referrals concerning the same country differed even within a single Bureau's jurisdiction.

Compounding this, Chapters II and III of the Administrative Procedure Act do not apply to a mayor's dispositions in family-registration matters (Family Register Act, Article 127). There is accordingly no duty to establish and publish review criteria, and no duty even to endeavour to set a standard processing period. The system contains no legal brake on delay.

That is precisely why preparation and negotiation at this stage determine the outcome. Assembling the alternative documents completely but without excess; obtaining an apostille or consular legalisation wherever possible so that authenticity need not be separately examined; and anticipating in writing what the Legal Affairs Bureau will want to verify — each of these shortens the referral, and may avoid it altogether.

This office has a record of negotiating with the Legal Affairs Bureau in cases where the required documents could not be assembled, and of bringing the marriage into being. In one instance, a client who had entered Japan for tourism had a child with a Japanese woman, lost his residence status, and was arrested and prosecuted for unlawful residence. Because the marriage and acknowledgment of paternity had not been completed, the authorities initially refused to accept the filings. Mr Matsumura negotiated with the authorities from a constitutional standpoint, brought about both the marriage and the acknowledgment, and — with almost no official documents available from the country of nationality — obtained special permission to stay by analysing the immigration authorities' past grants.

How to challenge a refusal to accept

It is not widely known, but a refusal to accept a marriage registration can be challenged, although by a route different from that for ordinary administrative dispositions. No administrative appeal may be filed against a mayor's disposition or failure to act in family-registration matters (Family Register Act, Article 123); the Administrative Complaint Review Act route is closed.

What is available instead is an application to the family court. A person who considers a mayor's disposition in a family-registration matter to be improper may apply to the family court for relief (Family Register Act, Article 122). The application is made not to the court for the applicant's address but to the family court with jurisdiction over the location of the municipal office (Domestic Relations Case Procedure Act, Article 226(iv)). The family court must hear the mayor's opinion (Article 229(2)), and where it finds the application well founded it must order the mayor to take the appropriate action (Article 230(2)). The design is significant: the court does not merely quash the refusal but may order that the registration be accepted.

Three common misconceptions

"Without residence status the registration will not be accepted." This is wrong. A marriage registration may not be accepted until it has been confirmed that the marriage does not contravene the Civil Code provisions on impediments to marriage or other provisions of law (Civil Code, Article 740) — and residence status is not among them. The substantive requirements are governed by each party's national law (Act on General Rules for Application of Laws, Article 24(1)); residence status is merely a position under Japanese administrative law. Nor does the place of filing depend on residence registration: the place where the person is located suffices (Family Register Act, Article 25(2)).

"Without the original passport the registration cannot be accepted." According to the report cited above, the Ministry of Justice has stated that where the passport serving as proof of nationality cannot be produced in original, it is open to the office to require a copy together with a written statement explaining why the original cannot be produced, and then to decide the acceptability of the registration on an overall assessment. Cases in which registrations were accepted on that basis have been reported.

"Marriage confers residence status." Also wrong. Acceptance of the marriage registration and acquisition of residence status are entirely separate procedures. A person in unlawful residence who wishes to regain lawful status must present himself or herself to the immigration authorities and seek special permission to stay within the deportation procedure (Immigration Control Act, Article 50). The existence of a marriage is one of the matters given weight in that assessment, but it does not of itself create residence status.

About this office

Daisuke Matsumura (Dai-Ichi Tokyo Bar Association, registration number 59077, admitted 2019) of Funado International Law Office in Toshima-ku, Tokyo, focuses his practice on criminal defence for foreign nationals — Chinese clients in particular — and on immigration procedures. Negotiating the acceptance of a marriage registration lies on the same continuum as that work.

As described above, this office has taken a case from an initial refusal of the marriage and acknowledgment filings through to the grant of special permission to stay, in circumstances where almost no official documents from the country of nationality existed. In another matter, a woman wrongly accused of promoting unlawful employment faced deportation; this office brought proceedings challenging the long-standing practice that intent and negligence are irrelevant to grounds for deportation, testing how far the principle of culpability extends, and the immigration authorities subsequently granted special permission to stay. Treating administrative practice as something to be argued about at the level of constitutional and administrative law, rather than accepted as given, is in our view what protects a client's rights in the end.

Mr Matsumura personally handles every stage of a case, from the first response to its conclusion; the work is not delegated to clerks or junior lawyers. The office has a dedicated Chinese interpreter experienced in cases involving foreign nationals in permanent attendance, and arranges interpreters in other languages according to the case. For residence status applications after the marriage, we work with an affiliated immigration specialist to provide a single point of contact.

Please note that past results depend on the particular circumstances of each case and do not guarantee a similar outcome.

Closing

Being told that you cannot marry because the documents cannot be assembled is not a reason to give up. The certificate of legal capacity is not a statutory requirement, and where there are grounds on which it cannot be obtained, practice permits a shift to an alternative proof built around a written statement. The real questions are whether the counter will accept that shift, and how the referral to the Legal Affairs Bureau is navigated. The quality of the preparation and the coherence of the argument shape the result directly.

This article is a general explanation based on information current as of August 2026; for an individual case, please consult a lawyer directly. The practice of each country's diplomatic missions changes frequently, so please confirm document names and formats with both the municipal office and the mission concerned.

Author

Daisuke Matsumura, Attorney at Law
Dai-Ichi Tokyo Bar Association (registration number 59077, admitted 2019)
Funado International Law Office (Fuse Building Main Wing 3F, 3-4-10 Takada, Toshima-ku, Tokyo)
Practice focused on criminal defence and immigration procedures for foreign nationals, principally Chinese clients. Results include an acquittal in a Stimulants Control Act case (possession for the purpose of profit), non-prosecution in organised fraud cases, and the grant of special permission to stay in cases regarded as difficult.

Funado International Law Office
Website: https://matsumura-lawoffice.jp/
WeChat ID: matsumura1119