International Marriage Registration in Japan: The Complete Guide for Foreigners

Getting married in Japan as a foreigner involves navigating a specific set of legal procedures that differ from what you may be used to back home. Whether you are marrying a Japanese national or another foreigner living in Japan, understanding the registration process, required documents, and what comes after is essential to making your marriage legally recognized. This guide walks you through every step of international marriage registration in Japan.

Over 20,000 international marriages take place in Japan every year. With Japan's growing international community, the process has become more streamlined — but it still requires careful preparation. The good news: if you have all your documents ready, your marriage can be officially registered on the same day you visit city hall.

!International couple at Japanese city hall registering their marriage with official documents

What Is the Kon-in Todoke and Why It Matters

The Kon-in Todoke (婚姻届) is Japan's marriage registration form — the cornerstone of the entire process. Unlike in many Western countries where a ceremony itself creates the legal marriage, in Japan it is the act of submitting this form to a municipal office that makes your marriage legally valid. The ceremony, if you choose to have one, is purely celebratory.

This form must be:

• Completed in Japanese
• Signed by two witnesses (any nationality, 18 years of age or older)
• Submitted to your local city, ward, or town office (市区町村役場)

You can pick up the Kon-in Todoke at any municipal office, or download it from your city's official website. The date you submit the form becomes your official legal wedding date in Japan. Some municipalities allow mail-in submissions, but this varies — check with your local office in advance.

Legal Requirements for International Marriage in Japan

Before diving into documents, understand the basic legal conditions that must be met for a marriage to be registered in Japan:

Age requirement: Both parties must be at least 18 years old. This has been the rule for both men and women since Japan revised its Civil Code in April 2022.

No current marriage: Neither party can currently be legally married. Proof of single status is typically required from foreign nationals.

Waiting period after divorce: Women must wait 100 days after a divorce before remarrying under Japanese law (this rule exists due to parentage determination laws, though recent reforms are updating this).

No close blood relation: Japan prohibits marriage between close relatives.

Same-sex marriage: Same-sex marriage is not legally recognized in Japan at the national level, though some municipalities offer partnership certificates.

For foreigners marrying in Japan, one important note: you do not need to be a permanent resident or long-term resident to register a marriage. Even tourist visa holders can legally marry in Japan — however, marrying does not extend your visa or grant any residency rights automatically.

Required Documents for Foreigners

The documents you need depend on your nationality and your partner's status. Here is a breakdown of what is typically required:

The Certificate of No Impediment

The Certificate of No Impediment (kon in yoken gubi shomei sho / 婚姻要件具備証明書) is the most critical document for foreign nationals. This certificate proves that:

• You are legally free to marry (not already married)
• You meet your home country's legal requirements for marriage

You must obtain this from your home country's embassy or consulate in Japan. For American citizens, this is called an Affidavit of Competency to Marry and is obtained from the U.S. Embassy in Tokyo or consulates in major cities.

The cost is approximately 5,500 yen for most embassies. Processing time varies by country — some issue it the same day, others may take a week or more. Check your embassy's website for current procedures.

Document Translations

All documents in a foreign language must be accompanied by a Japanese translation. You can translate them yourself in some cases, but professional translation is recommended and sometimes required. Professional translation services typically cost 10,000–12,000 yen per document.

!Documents required for international marriage registration in Japan laid out on a desk

Step-by-Step: How to Register Your Marriage at City Hall

Here is the complete process from start to finish:

Step 1: Gather your documents Begin by contacting your home country's embassy to understand what they require to issue a Certificate of No Impediment. Start this process early — embassy appointments can take weeks.

Step 2: Obtain the Certificate of No Impediment Visit or contact your embassy/consulate. You will likely need your passport, proof of residence, and possibly notarized statements. Pay the required fee (around 5,500 yen).

Step 3: Translate foreign documents Have all non-Japanese documents professionally translated. Keep originals and translations together.

Step 4: Complete the Kon-in Todoke Get the form from your city hall or download it. Fill it out carefully in Japanese. Have two witnesses sign (this can be done in advance).

Step 5: Visit the municipal office Go to your local city or ward office with all documents. The registration counter staff will review everything. If all documents are in order, the marriage is registered the same day.

Step 6: Obtain your marriage certificate Request a Certificate of Acceptance of Notification of Marriage (kon-in todoke juri shomei sho). This costs 350–1,400 yen depending on the municipality. Get multiple copies — you will likely need them.

Step 7: Report to your home country Many countries require you to report your marriage to your home country's embassy or consulate in Japan, or upon return to your home country. Check your country's requirements.

For more information on navigating Japanese bureaucracy and paperwork, the team at Living in Nihon has practical guides for foreigners dealing with official procedures in Japan.

Registering Your Marriage If One Partner Is Abroad

One of the unique aspects of Japanese marriage registration is that neither partner needs to physically submit the form in person at the same time. Here is how it works in different scenarios:

If the foreign spouse is abroad: The Japanese spouse can submit the Kon-in Todoke at their local city hall. The foreign spouse mails their Certificate of No Impediment, passport copy, and any other required documents to their Japanese partner in Japan. The Japanese partner completes the process.

If both partners are abroad: The Japanese spouse's family can assist with obtaining the forms from the local city hall. Documents are exchanged by traceable international mail (EMS or DHL recommended). The completed paperwork is returned to the city hall, often by a family representative.

Allow extra time: Processing after submission typically takes about four working days before you can confirm registration. Always send documents via traceable mail to avoid loss.

After Registration: Updating Your Status and Visa

Here is an important fact that surprises many newcomers: marriage does not automatically change your visa status in Japan. If you are on a work visa or student visa, you remain on that visa even after marriage. To live in Japan as a spouse, you need to take additional steps.

Applying for a Spouse Visa (日本人の配偶者等)

If you are marrying a Japanese national and wish to live in Japan long-term, you will need to apply for a Spouse of Japanese National visa (Nihonjin no Haigusha-to). This is a separate application process through the Immigration Services Agency of Japan.

Spouse visas are granted in durations of:

• 6 months
• 1 year
• 3 years
• 5 years

The application requires extensive documentation proving your marriage is genuine, including:

• Your marriage certificate
• Proof of cohabitation (lease, utility bills)
• Financial proof (tax certificates, pay stubs)
• Communication records and photos together
• Sponsor's documents (Japanese spouse's income certificate, etc.)

Japan's immigration authorities take authenticity of marriage very seriously. Sham marriages for visa purposes are illegal and can result in deportation and criminal charges.

For guidance on the full visa and residency process in Japan, see our Complete Guide to Japan Visa and Immigration.

Path to Permanent Residency

The good news for those planning to stay long-term: spouse visa holders can apply for permanent residency after just 3 years of marriage and continuous residence in Japan (compared to 10 years for most other visa categories). This is one of the significant advantages of the spouse visa path. For more on long-term planning, read our Complete Guide to Moving to Japan as a Foreigner.

For practical advice on family life in Japan after marriage, For Work in Japan's family life guide covers housing, childcare, and daily logistics that affect international families.

Recognizing Your Japanese Marriage in Your Home Country

Your Japanese marriage will generally be recognized in your home country, but you typically need to take action to register it officially:

For U.S. citizens: Report your marriage to the U.S. Embassy in Japan or register it with your home state upon return. Japan marriage certificates are internationally valid but may need apostille certification for some purposes.

For EU citizens: Requirements vary by country. Most require reporting the marriage to your country's civil registry via the embassy.

For citizens of other countries: Consult your embassy in Japan for the specific reporting requirements.

Keep multiple certified copies of your Japanese marriage certificate (kon-in todoke juri shomei sho) — you will need them for various administrative tasks both in Japan and in your home country.

Costs Summary for International Marriage Registration in Japan

Total estimated cost (documentation only): 15,000–25,000 yen, depending on how many documents need translation and how many certificate copies you obtain.

Common Questions and Mistakes to Avoid

Can we marry in Japan with just a tourist visa? Yes, legally you can register your marriage in Japan on a tourist visa. However, the marriage does not extend your visa or grant any right to stay. You would need to apply for a spouse visa from outside Japan if you want to reside here.

Do we need to have a ceremony? No. The legal marriage in Japan is 100% the registration of the Kon-in Todoke. A ceremony is entirely optional and has no legal standing.

Can one of us submit the form without the other present? Yes. The submitting partner brings all documents including those of the absent partner. The absent partner does not need to appear in person.

What if my embassy doesn't issue a Certificate of No Impediment? Some countries (notably parts of South Asia and some developing nations) do not have a standardized Certificate of No Impediment process. In these cases, consult your local city hall — alternative documentation such as a sworn affidavit or government-issued single status document may be accepted.

How long does the whole process take? The registration itself takes one day if all documents are ready. The preparation phase (getting your Certificate of No Impediment and translations) can take 2–8 weeks depending on your nationality and embassy processing times.

For additional resources on cultural aspects of relationships and marriage in Japan, see our Complete Guide to Marriage and Relationships in Japan, and for raising a family after your marriage, check our Complete Guide to Raising Children in Japan.

More detailed guidance on the marriage documentation process is available from TranSenz Japan and MailMate's Japan marriage guide, both of which provide step-by-step walkthroughs.

If you want support navigating Japanese HR, legal, and administrative procedures after settling in Japan, Ittenshoku provides resources for foreigners building careers and lives in Japan.

Final Thoughts

International marriage registration in Japan is a manageable process once you understand the requirements. The key steps are: obtain your Certificate of No Impediment from your embassy, translate all necessary documents, fill out the Kon-in Todoke, and submit everything at your local city or ward office. If your documents are complete, the entire registration can happen in a single day.

What comes after — updating your visa status, notifying your home country, and building a life together in Japan — requires additional planning. But with the right preparation, you can navigate Japan's marriage registration system smoothly and start your married life on solid legal footing.

For broader context on life in Japan as an expat or long-term resident, explore our Complete Guide to Daily Life in Japan for Foreigners.