Tell the difference between situations where a signature is enough and those that need a registered seal (jitsuin), and be able to register a seal and get a certificate yourself when needed.
Explanation
In Japan, people have a custom of stamping documents with a personal seal (印鑑 / はんこ), but most national government procedures no longer require a seal, and a signature is enough in more and more situations. A contract is also valid without a seal, unless a law has a special rule.
On the other hand, for things such as registering a car, you may need a seal registered with your city, ward, town, or village (registered seal, 実印) and a seal registration certificate (印鑑登録証明書). Foreign residents aged 15 or older who are registered as residents can also register a seal. The seal is made with your name as shown on your resident record (for example, the name on your residence card (在留カード)). Whether a seal in katakana, an alias, or initials can be used (in some cases your katakana name must be recorded on your resident record), the size, and the procedures differ by municipality, so check in advance.
Keep your registered seal and your seal registration card (印鑑登録証) in a safe place, and if you lose them, report it to the office right away.
What happens to a contract if you do not stamp a seal on it?
It is always invalid
Unless a law has a special rule, it is valid without a seal
You must report it to the police
It is invalid even if you sign it
AnswerB. Unless a law has a special rule, it is valid without a seal
A contract is formed when the parties agree, and a seal is not a required condition unless a law has a special rule (Cabinet Office, Ministry of Justice, and Ministry of Economy, Trade and Industry, "Q&A on Seals").
Q2
What is a "jitsuin" (実印)?
Any seal bought at a store
A rubber stamp with a company name
A seal registered with your city, ward, town, or village
A handwritten signature
AnswerC. A seal registered with your city, ward, town, or village
A seal registered with the city, ward, town, or village where you live is generally called a jitsuin.
Q3
Which is correct about seal registration for foreign residents?
People aged 15 or older who are registered as residents can register
Only Japanese nationals can register
Anyone who came as a tourist can register
You register at your embassy
AnswerA. People aged 15 or older who are registered as residents can register
Seal registration is done at the city, ward, town, or village where you are registered as a resident. Foreign residents can also register if they are registered as residents and are 15 or older.
Q4
Which seal generally cannot be registered?
A seal made with the name on your residence card
A wooden seal carved with your name
A seal with your name within the specified size range
A rubber stamp that easily changes shape
AnswerD. A rubber stamp that easily changes shape
Seals whose impression easily changes, such as rubber stamps, cannot be registered. Check the size and character requirements on your municipality's website.
Q5
What should you do if you lose your registered seal or seal registration card?
Leave it as it is
Start using a new seal on your own
Report it to the city, ward, town, or village office right away
Ask your neighbors to look for it
AnswerC. Report it to the city, ward, town, or village office right away
To prevent misuse, report it to the office right away and complete procedures such as canceling the registration. Follow your municipality's guidance.
Frequently asked questions
Q. Do government office documents always need a seal?
A. For national government procedures, the seal requirement was abolished, or reviewed with a view to abolishing it, for more than 99% of procedures. Municipalities are also reviewing their procedures. However, some procedures still require a registered seal and a seal registration certificate. Follow the instructions on the document or at the counter.
Q. Can I register a seal on the same day?
A. In some municipalities, you can register on the same day if you go to the counter in person with an official ID with your photo, such as your residence card. Otherwise, the office mails an inquiry form (reply form) to your home, and registration is completed when you bring it to the office. Check with your municipality for details.
Q. Where can I get a seal registration certificate?
A. Request it at your city, ward, town, or village counter by showing your seal registration card. In some municipalities, if you have a My Number Card, you can also get it at a convenience store.
Practice: answer the questions on this page
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Systems and procedures may differ depending on the city, ward, town or village where you live and on the time of year. Please check the latest information from your local government or the relevant organizations. Content checked on: 2026-10-03
This page is a translation of the Japanese original. If the translation and the original differ, the Japanese version takes precedence. View the Japanese original