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About My Number System

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As the foundation of a digital society, My Number System is an infrastructure for improving convenience for citizens and administrative efficiency at the same time, and for realizing a fairer and more just society. By sharing information among administrative agencies in My Number System, it is possible to omit attached documents in various administrative procedures.

Contents

1. My Number

A 12-digit number assigned to all Japanese residents who have resident records. My Numbers are used for administrative procedures prescribed by laws and ordinances or ordinance, such as social security system, tax system, and disaster response. My Numbers make it possible to identify individuals accurately and quickly. In addition, in administrative procedures, by coordinating information among administrative agencies, etc., the number of necessary attached documents is reduced, and administrative processing becomes smoother, improving convenience for citizens. In addition, necessary administrative support can be provided promptly to those who need it.

2. Explanation of systems in My Number System

2.1. Information coordination

Information coordination refers to the exchange of information necessary for administrative procedures between administrative agencies using a dedicated network system (information provision network system).
This makes it possible for citizens and residents to omit the submission of documents in various administrative procedures.

Related Materials

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

2. 2. public money receiving account Registry

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

* 1 Deposit account in the name of the applicant
The only bank account that can be registered with public money receiving account is the bank account in the person's name.
For example, you cannot register a parent's savings account as your child's public money receiving account.
* 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 Regarding the Use of the Account Information Register and Linkage System.

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

2.3. Deposit Account Numbering System

The My Number system for bank accounts (My Number System for Bank Accounts) is a system for notifying financial institutions of your My Number.
From April 1, 2025, it will be possible to confirm the location of a deposit account with a My Number at the counter of one financial institution in the event of an inheritance or disaster.
*The Deposit and Savings Account Numbering Program is different from the "public money receiving account Registry Program." The "public money receiving account Registry Program" is a program for citizens to register with the national government (Digital Agency) one deposit and savings account per person currently held at financial institutions as an account for receiving benefits, etc.

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

2.4. Relevant information on My Number System

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

Handling of Specific Personal Information

For the proper handling of specific personal information (personal information that includes My Number in its content), please see the following link.

Handling of My Number at Financial Institutions

*Materials prepared before the establishment of Digital Agency are listed.

Provision of Information by Financial Institutions (External Link)

3. Safety measures in My Number System

As for My Number System security, in addition to institutional security measures (such as monitoring by identity verification and Personal Information Protection Commission), we have taken system security measures (such as decentralized management of personal data and a system that does not use the My Number system itself for information coordination).

3.1. Institutional Safeguards

  • It is prohibited to collect or store personal information including My Number except for those prescribed by law.
  • The Personal Information Protection Commission, a third party organization, monitors and supervises whether specific personal information, including My Numbers, is being properly managed.
  • If you violate the law, there will be heavy penalties.
  • When providing the My Number, it is mandatory to confirm the My Number and confirm the identity of the person, so it is not possible to immediately perform procedures using the My Number by pretending to be the person.
  • In the Mynaportal , the history of personal data exchanged between administrative organizations can be confirmed by the person.

Related Materials

3.2. System safety measures

  • Personal information is not centrally managed. As in the past, pension information is managed by pension offices, local tax information is managed by municipalities, and each piece of information is managed separately.
  • When information is shared among 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 Materials

Warning against scams taking advantage of My Number System

Call centers, local governments, consumer affairs centers, and other organizations have received information on phone calls, e-mails, letters, and visits that attempt to take advantage of the My Number System to solicit customers or obtain personal data.

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

Under the the Act to Partially Amend the My Number Act promulgated on June 9, 2023, the scope of use of the My Number system will be expanded (the enforcement date varies depending on the content).

  1. Expansion of the scope of use of My Number
  2. Review of regulations on the use of My Number and information coordination
  3. Integration of My Number Card and health insurance card
  4. Promotion of use and diffusion of My Number Card
  5. Addition of "Furigana of name" to entries in family registers, etc.
  6. Promotion of public money receiving account Registration (Establishment of Special Registration System through Administrative Organs, etc.)
Related Information

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

4.2. Research Studies

Research and study (commissioned research) on initiatives for once-only administrative procedures utilizing the common number system in foreign countries

Similar to My Number System, there are countries in other countries that have introduced systems to identify specific individuals by using numbers allocated to each citizen for the purpose of using them in administrative procedures, etc. (hereinafter referred to as the "Common Number Systems"). In this study, we investigated the Common Number Systems in other countries and summarized their utilization status, specific systems, and future trends.

5. Post-Adoption My Number System Roadmap

We will announce a roadmap for efforts to expand the utilization of My Number System, My Number Card, and Mynaportal.

6. Frequently Asked Questions

Frequently asked questions are answered on the following pages.

*For FAQs about the public money receiving account Registry, see "Frequently Asked Questions (FAQs)" in public money receiving account Registry .