Getting married in Japan is often easier than people expect. The legal side is surprisingly straightforward, and once your marriage registration form is accepted at city hall, you are officially married. It does not matter if your ceremony happens later, earlier, or not at all. This guide walks you through the process step by step, from legal basics to the small but important tasks that follow registration, so you can spend less time stressing over paperwork and more time enjoying the moment.
Legal Fundamentals of Marriage Registration
In Japan, marriage is a civil act handled entirely by local government offices. Ceremonies, no matter how beautiful or meaningful, have no legal effect on their own.
Couples of all backgrounds can register a marriage at any city, ward, or town office in the country. There is no requirement to file in your place of residence, and there is no minimum period of living in Japan before you can apply. What matters is that both parties are legally free to marry under Japanese law and the laws of their home countries.
1. Civil vs. Ceremonial Weddings
Japan’s constitution separates religion from the state, which is why shrines, churches, temples, and hotel chapels are symbolic only. You can exchange vows anywhere you like, but the marriage becomes valid only when the municipal office accepts your registration.
Many couples quietly file their paperwork first, then hold a ceremony weeks or even months later. Others do it the same day. Legally, both approaches are treated exactly the same.
2. Age, Consent, and Marital Status
The legal minimum age for marriage is eighteen for all genders. This rule was unified in recent years and applies nationwide.
Bigamy is illegal. If either partner was previously married, that marriage must be fully dissolved before registering a new one. Divorced women are subject to a one hundred day waiting period before remarrying unless they can provide medical certification confirming they are not pregnant.
Same sex marriage is not recognized at the national level in Japan. Some local governments issue partnership certificates, which are discussed later in this guide, but these do not carry the same legal weight as marriage.
Eligibility and Required Documents
Before visiting city hall, confirm that you meet the legal requirements not only in Japan, but also under the laws of your home country. This is especially important for international and mixed nationality couples.
Certificate of No Impediment (CNI)
Most foreign nationals must obtain a Certificate of No Impediment, often called a CNI, from their embassy or consulate in Japan. Some countries issue a notarized affidavit instead. This document confirms that you are legally single and allowed to marry.
Processing time varies. In some cases it can be issued the same day, while other embassies take one to two weeks. It is worth checking well in advance so your plans are not delayed.
Core Document Checklist
- Passport and residence card
- CNI or single-status affidavit
- Birth certificate (if requested)
- Divorce decree or spouse’s death certificate, if applicable
- Japanese translations of all non-Japanese documents, signed by the translator
- Apostille seal for Hague Convention countries to prove authenticity (check local rules)
Step-by-Step Registration at City Hall
It might seem daunting, but don’t worry, this step can take under one hour.
Step 1 – Collect and Complete the kon-in todoke
The kon-in todoke is a pink form available at city halls and sometimes online. It asks for basic information about both partners and requires signatures from two adult witnesses. The witnesses can be friends, relatives, or colleagues of any nationality.
If one partner is Japanese, their name must be written exactly as it appears on their family registry, the koseki. Small discrepancies in kanji can cause delays, so it is worth double checking.
Step 2 – Submit Originals and Translations
Take the completed form, original documents, and translations to the family registry counter. Staff may review everything carefully and, in some cases, contact an embassy to confirm unfamiliar paperwork. This is normal and not a cause for concern.
Step 3 – Receive Acceptance Stamp
Once the clerk stamps and accepts your form, you are legally married at that exact moment. Some offices allow submissions after hours using a secure drop box. In those cases, the marriage is processed on the next business day, and the legal date reflects that acceptance.
Step 4 – Obtain Proof
Request:
- Certificate of Acceptance (受理証明書) : Needed for spouse visa and bank updates.
- koseki tohon (戸籍謄本) : Needed if one spouse is Japanese.
What to do after registration
The paperwork does not completely end once you are married. A few follow up steps will make daily life much smoother.
Visas and Residence Status
If you are married to a Japanese national, you can apply for a Spouse or Child of Japanese National visa. This usually involves obtaining a Certificate of Eligibility first. Processing commonly takes around two months, so plan ahead if your current visa has an expiration date.
Surnames, Address, and Bank Accounts
Foreign spouses may choose to keep their own surname or adopt their partner’s name. Japanese couples, however, must share a single surname, and the change must be reflected in official records within six months.
Address changes, name updates, and marital status should be reported to your ward office, bank, employer, and embassy as soon as possible to avoid complications later.
Tax and Social Insurance
Marriage can affect tax deductions and health insurance. A spouse may be added as a dependent under the Japanese partner’s health insurance plan, and some households qualify for income tax benefits during the year end adjustment. It is a small step that can make a noticeable difference.
Partnership Options for LGBTQ+ Couples
Many prefectures and municipalities now issue partnership certificates to same sex couples. These often help with hospital visitation, housing applications, and local services. However, they do not grant immigration rights, inheritance rights, or national level recognition.
For binational couples, this means that marrying abroad is often the only practical option for obtaining a spouse visa in Japan.
Wedding Ceremony and Social Etiquette
Once the legal side is done, couples are free to celebrate however they like.
Common ceremony styles
Shinto shrine weddings remain popular for their traditional atmosphere, formal kimono, and ritual structure. Western style chapel ceremonies are also widespread, especially in hotels, complete with veils, organs, and symbolic vows. Buddhist temples or restaurant receptions offer more relaxed alternatives that focus on food and family rather than formal rites.
Certain dates, like November eleventh, known as ii fufu or good couple day, are especially popular and can book out far in advance.
Western chapel: Faux-pastor, veil, and organ
Buddhist temple or restaurant reception: Relaxed alternatives
Peak dates such as 11 November (ii fufu, “good couple”) are often reserved a year in advance.
Gift-Giving (goshūgi / ご祝儀)
Wedding guests typically give cash gifts called “goshugi”, presented in decorative envelopes. Amounts vary, but thirty thousand yen for friends and fifty thousand yen for close relatives are common. Couples usually prepare “hikidemono” return gifts to thank guests for attending.
Family Introductions (omiai / お見合い)
Formal family meetings, sometimes referred to as omiai style introductions, are still common. These dinners tend to have structured seating, polite conversation, and a sense of quiet seriousness. It can feel stiff at first, but it often means the families are taking the marriage sincerely.
