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About social security, tax number system (my number system)

Last update date May 12, 2020

With social security, tax number system (my number system)

Summary of my number system

By introducing personal number (my number) in social security, tax, three fields of anti-disaster measures, my number system is administrative efficiency, improvement of convenience of people, fairness, system to aim at fair social realization.

Personal number (my number)

My number is 12 digits of numbers only for the person whom all (foreigner is included.) each one with resident certificate has in Japan.

Information cooperation

We came to be able to exchange information using exclusive network system between different administrations until now to be able to omit documents which needed which a lot of citizen's all of you submitted by business formalities. "Information cooperation" means the exchanges of this information.

Safety measures of my number system

In my number system, various safety measures are taken on system side and system side.

System side
  • When we offer my number, for prevention of spoofing, strict identity verification (confirmation of my number and confirmation of birth and parentage) is demanded.
  • We collect personal information (specific personal information) including my number unless law has regulations and are forbidden keeping.
  • About the right handling of specific personal information, personal information protection committee which is third-party organization performs monitoring, supervision.
  • When we acquire my number in "injustice" or "injustice" and provide, severe penal regulations are inflicted.
  • About own specific personal information, we can confirm record of the exchanges in intervals such as information or administration which administrations have in mainapotaru.
System side
  • Personal information is not consolidated, and pension office, information of local taxes disperse as having said municipality, and information of pension is managed as before. Therefore information may not leak out one after another.
  • When we exchange information between administrations, we do not use my number directly. We use exclusive mark which we cannot decode.
  • Information to exchange between administrations is encrypted.

About mainapotaru

mainapotaru is online service that the government runs.
mainapotaru: Service top page (the outside site)

Can do it in mainapotaru

  • We can confirm record that own specific personal information was exchanged between own specific personal information or administrations which administrations have.
  • We can check contents of administrative services about child care.
  • By some business formalities, we make application on mainapotaru, and electronic application is possible.

To use mainapotaru

My number card, IC card leader writer, PC or smartphone are necessary to use mainapotaru.
The details including usage of mainapotaru look at web page of Cabinet Office.
Cabinet Office: With mainapotaru (the outside site)

In Yokohama-shi, we install terminal for reading in the following places for where home does not have environment reading mainapotaru.
※At terminal for mainapotaru reading, we cannot perform electronic application.

Please be careful about suspicious inquiry, fraud to talk about my number system

By procedure for notice and use of my number, grant of my number card, we hear account number and password of account on the telephone and may not require money and bank card.
In addition, we may not ask for operation of ATM.
We do not accept telephone and letter, visit of such contents, and please consult with the following consultation counters and the nearest police department .

Person who received suspicious calls

The police consultation exclusive telephone

Phone number #9110

  • Reception hours: From weekdays 8:30 a.m. to 5:15 p.m. (is different in each metropolis and districts Police headquarters)
  • Saturday, Sundays and holidays and overtime are correspondence in duty or sound guides except some prefectural polices of the reception desk system for 24 hours
  • Call charge is user burden
  • It leads to the police synthesis counselor's offices of the metropolis and districts Police headquarters having jurisdiction over area where we made a call to.

Consumer Affairs Agency: Consumers hot line

Phone number 188

Consumers hot line informs of the nearest consumer life consultation counters.
Therefore time when we can talk varies according to the nearest consultation counters.

Personal information (specific personal information) that my number is included in which wants to do consultation about the handling

Personal information protection Committee: My number complaint mediation consultation counter

Phone number 03-6457-9585

Reception hours: From 9:30 a.m. to 5:30 p.m. (except Saturday, Sundays and holidays and New Year holidays)

Web page of country about my number system

Inquiry to this page

The General Affairs Bureau work reform room administration, information management section

Telephone: 045-671-3321

Telephone: 045-671-3321

Fax: 045-664-5917

E-Mail address [email protected]

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Page ID: 620-236-432

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