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 ".

FAQ: Deposit Account Numbering System

Last Updated:

Q & A will be added as needed.

Notice

  • March 31, 2026 Updated A9-16.

Frequently Asked Questions (FAQ)

Q9-1 What is a number assigned to a deposit account? What are the advantages of assigning a number to a deposit account?

A9-1

Deposit account numbering is a system that allows depositors to number their deposit accounts on a voluntary basis by reporting their My Numbers to financial institutions.
By assigning numbers to these deposit accounts, the whereabouts of deposit accounts with My Numbers can be confirmed at a single financial institution at the time of inheritance or disaster (Note).

  • (Note) This is a benefit provided by the Act on the Management, etc. of Deposit and Saving Accounts through the Use of Individual Numbers Based on the Intention of Depositors (Act No. 39 of 2021) (abbreviated as the Account Management Act).

Q9-2 What is the difference between the deposit account numbering scheme and the public money receiving account scheme?

A9-2

The deposit account numbering scheme is a scheme to report My Numbers to financial institutions and is different from the public money receiving account registry scheme (Note), which is a scheme to register deposit accounts with the national government in order to receive benefits, etc.

  • (Note) The public money receiving account Registry Program is a program established by the "Act on Registration, etc. of Deposit Accounts for the Prompt and Reliable Provision of Public Benefits, etc. (Act No. 38 of 2021)."

Q9-3 How can deposits and savings accounts be numbered?

A9-3

You can do it by reporting your My Number from a financial institution or Mynaportal to the financial institution you wish to number. , a financial institution that is not subject to some procedures in that are not subject to some procedures, you can also report your My Number to multiple financial institutions at once through the Deposit Insurance Corporation of Japan.

Q9-4 Which financial institutions are eligible for the deposit account numbering system?

A9-4

All financial institutions that handle postal savings accounts are eligible, but some financial institutions are not eligible for some procedures. For details, please refer to , a financial institution that is not subject to some procedures in .

Q9-5 What do I need in order to be assigned a deposit account number?

A9-5

As a general rule, your My Number, such as your My Number Card, and documents that confirm your personal identification information (name, address, date of birth) are required. When assigning numbers to deposit accounts via Mynaportal, in addition to a terminal (smartphone, etc.) that can access Mynaportal, My Number Card is required.

Q9-6 If you dial a deposit account number, will information on income and assets be transmitted to the national government?

A9-6

Financial institutions will not notify the national government of the balance of deposits and savings in response to the notification of the My Number.
It has been possible for the national government to confirm account information of depositors only when it conducts necessary financial and tax investigations for social security based on laws and regulations.

Q9-7 Is it compulsory to assign numbers to savings accounts?

A9-7

When opening a deposit / savings account or transferring more than 1 million yen overseas at a branch, financial institutions will confirm your intention to report your My Number (Note), but no My Number will be assigned to your deposit / savings account without your notification.

  • "Note: This is a response based on the" "Act on the Management, etc. of Deposit and Saving Accounts through the Use of Personal Numbers Based on the Intent of Depositors (Act No. 39 of 2021)" "(Account Management Act). Financial institutions have been requesting the cooperation of depositors in submitting their My Numbers in accordance with the Act on General Rules for National Taxes since before the enforcement of the Act."

Q9-8 If I have registered a public money receiving account to receive benefits, will my deposit account be numbered?

A9-8

Public money receiving account Registry System and Deposit Account Numbering System are different systems.
Therefore, even if the public money receiving account is registered, My Number will not be assigned to the deposit account without notification to financial institutions.

Q9-9 Can I choose which account to be numbered?

A9-9

You can select a financial institution to be numbered, but you cannot select individual accounts to be numbered. Depending on the management status of accounts at financial institutions, some accounts, such as dormant accounts, may not be numbered.

Q9-10 I cannot search for JA Bank in Mynaportal. What should I do?

A9-10

You can use it because it is a target financial institution, but the name of the financial institution entered in the search must be the official name.

For example, when registering "JA Bank Minor Agricultural Cooperative (tentative name)", search by "minor agricultural" or "minor agricultural" part, and select "minor agricultural cooperative" displayed in the search result.

Q9-11 Where can I check the result of my application for a deposit account number?

A9-11

In the case of applying for a number from a financial institution, if the My Number notification is submitted to multiple financial institutions at the same time via the Deposit Insurance Corporation of Japan, the Deposit Insurance Corporation of Japan will send you a notification of the result of the deposit account numbering. Please note that the notification address is limited to Japan. In addition, the notification will not be forwarded to the new address if you move after applying because it is an ordinary mail that does not need to be forwarded. Therefore, if you want to receive the notification, you need to apply again. If you have any questions about the contents of the notification, please contact the financial institution mentioned in the notification.
In the case of number assignment application from Mynaportal, you will be notified of the result of number assignment application on Mynaportal's "Notification".

Q9-12 I applied for a deposit account number from a financial institution, but it seems that I could not assign it well. What should I do?

A9-12

The identification information (name, address, and date of birth) reported to the financial institution at the time of application for numbering was not the latest (did not match the latest information on the resident record) or did not match the identification information registered at the financial institution for which numbering is desired.
If the identification matters notified to financial institutions at the time of application for numbering are not the latest, notify the financial institutions of the latest identification matters and apply for numbering again. If the latest identification matters are not notified to the financial institutions for which numbering is requested, notify the financial institutions for which numbering is requested of the latest identification matters and apply for numbering again.

  • (Note) If you do not submit your My Number to financial institutions when applying for a number, the Deposit Juki Net Corporation will obtain your My Number from the NHI based on your personal identification information and notify financial institutions. However, as a result of strict matching confirmation to prevent the acquisition of someone else's My Number by mistake, there have been cases where your My Number cannot be obtained even if the personal identification information submitted to financial institutions is correct. Therefore, please submit your My Number as much as possible when applying for a number.

Q9-13 I applied for a deposit account number from Mynaportal, but it seems that I could not assign it well. What should I do?

A9-13

It is considered that the number could not be assigned because the information entered at the time of the number application was incorrect or the personal identification information (name, address, date of birth) registered at the financial institution requesting the number was not the latest.
If the information you entered when you applied for the number is incorrect, please enter the correct information and apply for the number again.
If the content of the number application is correct, please notify the financial institution to which you wish to assign the number of the latest identification matters and apply for the number again.

Q9-14 Can I cancel the numbering of my savings account?

A9-14

As a general rule, you can't cancel the numbering after it's completed.

Q9-15 Because my parents have passed away, I would like to figure out which financial institution I had my account in inheritance procedures. What should I do?

A9-15

If a deceased person (decedent) has numbered his / her deposit / savings account before death, his / her family member (heir) can apply for an inheritance inquiry at a financial institution of their choice to confirm the whereabouts of the deposit / savings account with the My Number of the deceased person at all financial institutions, except for financial institutions in , a financial institution that is not subject to some procedures in . Mynaportal cannot apply for an inheritance inquiry.

Q9-16 What is required for inquiries at the time of inheritance?

A9-16

In addition to the identity verification documents, documents that confirm the deceased person's personal identification information (name, address, date of birth) and documents that confirm the applicant is a legal heir or universal donee are required. The deceased person's (decedent's) My Number is not required. In addition, a fee must be paid.

  • (Note) The decedent's My Number is obtained from the Basic Resident Register Network System (Juki Net) based on the identity of the decedent by the Deposit Insurance Corporation of Japan. However, as a result of strict matching confirmation to prevent the acquisition of another person's My Number by mistake, it has been confirmed that the decedent's My Number cannot be obtained even if the identity of the decedent submitted to financial institutions is correct. Please be aware of this when applying for an inheritance inquiry.
  • (Note) Regarding the identification information of the decedent, please fill out the application form as described in the confirmation documents so that there are no address writing fluctuations, etc. (Examples: 1-1-1 and 1-1-1, Kasumigaseki and Kasumigaseki, Taka and Taka, etc.).
  • (Note) Among the documents that can confirm the identification information of the decedent, the List of Statutory Inheritance Information may cause fluctuation in the description of the address because the applicant visually checks and transcribes the information such as the deleted resident record. In addition, due to the difference in the type of characters used, the deleted resident record is considered to be the document with the highest possibility of matching the information on the identification information registered in the Juki Net.

Q9-17 Until when can I make inquiries at the time of inheritance?

A9-17

It is possible until 10 years after the death of the decedent.

Q9-18 What should I do if I have more than one heir?

A9-18

One of the heirs should make the inquiry.

Q9-19 Where can I check the results of the inheritance inquiry?

A9-19

The Deposit Insurance Corporation will send you a notice of the results of the inquiry at the time of inheritance. Please note that the destination of the notice is limited to Japan. In addition, the notice is a registered mail that does not need to be forwarded, so if you move after applying, it will not be forwarded to your new address. In this case, you will need to apply again and pay the fee again. If you have any questions about the contents of the notice, please contact the financial institution listed in the notice.

Q9-20 I lost my passbook at a financial institution due to the disaster, so I would like to know my account information. What should I do?

A9-20

If you had numbered your savings accounts before the disaster, you can apply for an emergency inquiry at any financial institutions to confirm the whereabouts of your savings account with your My Number assigned to it at one of the designated financial institutions, excluding , a financial institution that is not subject to some procedures in . Please note that you cannot apply for an emergency inquiry from Mynaportal.

Q9-21 What is required for inquiries in times of disaster?

A9-21

Documents that can confirm your My Number and personal identification information (name, address, date of birth) are required.

Q9-22 Where can I check the results of the inquiry for disasters?

A9-22

It will be notified by the financial institution that applied for the inquiry at the time of disaster.