Skip to main content

This page has been translated using TexTra by NICT. Please note that the translation may not be completely accurate.If you find any mistranslations, we appreciate your feedback on the "Request form for improving the automatic translation ".

About My Number System

Last Updated:

As the foundation of a digital society, My Number System is an infrastructure for realizing a fairer and more just society by improving the convenience of citizens and the efficiency of administration. Through information coordination among administrative organizations in My Number System, it is possible to omit documents to be attached to various administrative procedures.

Contents

1. My Number

My Number is a 12-digit number assigned to all Japanese residents who have a certificate of residence. My Number is used for administrative procedures specified by laws and ordinances or ordinance, such as social security system, tax system, and disaster response. My Number makes it possible to identify individuals reliably and quickly. In addition, in administrative procedures, information coordination among administrative organs reduces the number of necessary documents to attach, facilitates administrative processing, and improves convenience for citizens. In addition, necessary administrative support can be provided quickly to those who need it.

2. Explanation of Systems in My Number System

2.1. Information Coordination

Information collaboration is the exchange of information necessary for administrative procedures between administrative organs using a dedicated network system (information provision network system).
This makes it possible for citizens and residents to skip the submission of documents for various administrative procedures.

Related Resources

*For guidance on individual administrative procedures, please be sure to check the pamphlets, websites, etc. of each local government and administrative organization.

2. 2. public money receiving account Registry System

This is a program for citizens to voluntarily register their savings accounts at financial institutions with the government (Digital Agency) as accounts for receiving benefits, etc.
The accounts that can be registered as a public money receiving account are a deposit account * 1 in the name of the person concerned and one account per person * 2. For eligible benefits, etc., see the Benefits, etc., public money receiving account that can be received using the .

* 1 Savings account in the name of the applicant
The deposit account that can be registered in public money receiving account is only the deposit account in your name.
For example, you cannot register a deposit account in your parent's name as a public money receiving account for your child.
* 2 One account per person
Only one deposit account per person can be registered with public money receiving account.

When registering a public money receiving account, please also read the Terms of Use of the Account Information Registration and Linkage System .

For details, please refer to the public money receiving account Register .

2.3. Deposit Account Numbering System

The Number System of My Number to Bank Account (Bank Account Numbering System) is a system for submitting My Number to financial institutions.
By attaching a number to your bank account, you will be able to check the location of your bank account to which your My Number is attached at the counter of one financial institution at the time of inheritance or disaster.
*The Bank Account Numbering Program is different from the "public money receiving account Register Program." Under the "public money receiving account Register Program," citizens are required to register with the national government (Digital Agency) their existing bank accounts with financial institutions as one account per person for the purpose of receiving benefits.

For details, please refer to the Deposit Account Numbering System .

2.4. Relevant Information on My Number System

Materials and related information regarding the handling of My Number are posted.

Handling of Specific Personal Information

Please refer to the following link for proper handling of specific personal information (personal information including My Number).

Handling of My Number by Financial Institutions

*Materials created before the inauguration of Digital Agency are listed.

Information provided by financial institutions (external link)

3. Security measures at My Number System

With regard to My Number System security, in addition to institutional security measures (such as monitoring by identity verification and Personal Information Protection Commission), we are taking system-related security measures (such as decentralized management of personal data and a system that does not use the My Number itself for information sharing).

3.1. Institutional Safety Measures

  • It prohibits the collection and storage of personal information including My Number, except for those stipulated by law.
  • Personal Information Protection Commission, a third party organization, will monitor and supervise whether specific personal information including My Number is properly managed.
  • If you violate the law, there will be heavy penalties.
  • When providing the My Number, confirmation of the My Number and confirmation of identity are mandatory, so it is not possible to immediately carry out procedures using the My Number by impersonating the person.
  • In , Mynaportal, you can check the history of personal data exchanged between administrative organizations.

Related Resources

3.2. System Safety Measures

  • Personal information is not centrally managed. As in the past, pension information is managed by pension offices and local tax information is managed by cities, wards, towns and villages.
  • When coordinating information between administrative agencies, etc., the My Number is not used directly, but a special code is used.
  • We restrict who can access the system and encrypt communications.

Related Resources

A Call for Attention to My Number System Scams

Call centers, local governments, and consumer affairs centers are receiving information on telephone calls, e-mails, letters, visits, etc. that attempt to illegally solicit or obtain personal data by taking advantage of the My Number System.

4. Recent Initiatives and Research on My Number System

4.1. Initiatives

Expansion of My Number System in the Act to Partially Amend the My Number Act

The the Act to Partially Amend the My Number Act, which was promulgated on June 9, 2023, will expand the scope of use of the My Number (enforcement date varies depending on the content).

  1. Expanding the scope of use of My Number
  2. Review of regulations on the use of the My Number and information sharing
  3. Integration of My Number Card and health insurance cards
  4. Promoting the use of My Number Card
  5. Addition of "Furigana of name" to entries in family register, etc.
  6. Promotion of public money receiving account Registration (Establishment of Special Provisions for Registration via Administrative Organs)
Related Information

Act for Partial Revision of the Act on the Use of Numbers to Identify a Specific Individual in Administrative Procedures (Act No. 48 of 2023) (the Act to Partially Amend the My Number Act)

4.2. Research

Survey and research (commissioned survey) of initiatives in other countries regarding the one time use of administrative procedures using the common number system

As in the case of My Number System, there are countries that have adopted systems for identifying specific individuals using numbers assigned to each individual citizen (hereinafter referred to as the "Common Number System") for the purpose of use in administrative procedures, etc. In this survey, the status of utilization of the Common Number System in foreign countries, specific mechanisms, and future trends were summarized.

5. Roadmap after the introduction of My Number System

We will announce a roadmap for initiatives such as expanding the use of My Number System, My Number Card, and Mynaportal.

6. Frequently Asked Questions

The following pages provide answers to frequently asked questions.

*For FAQs about the public money receiving account Register, please visit the public money receiving account Register Frequently Asked Questions (FAQ).