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Shinjuku City Official Website > Foreign Language Top Page > Procedures for Changes of Address and Taxes > About the Social Security and Tax Number System (“My Number System”)

About the Social Security and Tax Number System (“My Number System”)

Starting October 2015, a twelve-digit individual number (“My Number”) has been assigned to all registered residents (including foreign students and middle-/long-term residents with a visa period of residence of more than three months, as well as special permanent residents who have completed resident registration in Shinjuku City). The use of “My Number” for social security, taxes and disaster countermeasures began from January 2016. Using the “My Number” system will make it possible to confirm whether the information each institution has concerning a particular individual is the same individual.
Thus, various administrative institutions will be able to refer to or provide individual information necessary for various procedures, making administration even more convenient and efficient, and creating a fair and just society.

Inquiries • “My Number” System Call Center (Cabinet Office)
In Japanese: Tel: 0120-95-0178 (Toll-free)
In foreign languages (English, Chinese, Korean, Spanish and Portuguese): Tel: 0120-0178-26 (Toll-free)
• Shinjuku City Office
Concerning the issuance or other inquiries about “My Number” (Individual Number) cards: Coordination Section, Family and Resident Registration Division (Main Bldg. 1F), Tel: 03-5273-4348, Fax: 03-3209-1728
Website • Cabinet Secretariat website (Social Security and Tax Number System)
http://www.cas.go.jp/jp/seisaku/bangoseido/index.html
https://www.cas.go.jp/jp/seisaku/bangoseido/otherlanguages.html 
(Information on the social security and tax number system is available in twenty-six languages.)
• Japanese Government Online Public Relations (the “My Number” system special page)
http://www.gov-online.go.jp/tokusyu/mynumber/index.html
• Shinjuku City Website
http://www.city.shinjuku.lg.jp/kusei/kikaku01_002131.html

With the Introduction of the “My Number” System

Improving Convenience
Bothersome procedures will be simplified
The number of required documents (such as tax certificates) that must be attached when applying for social security services will be reduced, making the burden on applicants lighter.

Creating a More Just Society
More accurate administrative services can be provided
Administrative institutions can gather correct information on income conditions and services received, and provide detailed and appropriate administrative services to those who need them.

Making Administration More Efficient
Processing of forms will become speedier and more accurate
With administrative institutions and local public authorities able to access and provide information using the “My Number” system, it will shorten the time required for procedures and administrative procedures will become more efficient.

Schedule for Introducing the “My Number” System

From October 2015
Notification cards with the twelve-digit individual number have been mailed by simple registered mail to addresses of all persons who have completed resident registration.
* As of May 25, 2020, no new notification cards are being issued, and the handling of notification cards already issued has changed. For more information, please click here.

Starting from January 2016
– Individual number cards (see below) are issued to those who would like one.

Personal number card (front) /Personal number card (back)

This card is an IC card with an ID photo. It can be used as a form of official personal identification.
Note: Cards are issued in order to those who apply for an individual number card. The card is issued at the Shinjuku City Office service counter upon confirmation of personal identification.

Starting from July 2017
– A “My Number” portal (a record disclosure system that can do things such as providing information) is in operation.
– Local public authorities will start referring to and providing information mutually, using the system.

Beware of Suspicious Telephone Calls concerning the “My Number” System!
Neither the national government nor Shinjuku City will call to ask for your personal information with regard to the “My Number” system. If you receive a suspicious call, please notify the police by dialing 110 or going to your local police station.

July 15, 2020