内閣府 Cabinet Office, Government of Japan

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マイナンバー(社会保障・税番号制度)

Social Security and Tax Number System

The Japanese government adopted the Social Security and Tax Number System in order to (1) enhance the social security to people who truly need it, (2) enhance public convenience and (3) develop the efficiency in administration.

Introducing the Social Security and Tax Number System as a Form of Social Infrastructure to Support Daily Living

Important Notice to Foreign Residents holding "Individual Number Cards"

What is the Social Security and Tax Number System?

Applicable Law

Call Center (Multilingual Service)

  • The Call Center handle your inquiries concerning the Social Security and Tax Number System.
  • 1) Telephone No. 0120-0178-26 (FreeCall)
  • 2) Call Center Hours
    Weekdays : 9:30 a.m. to 20:00 p.m.
    weekends and national holidays : 9:30 a.m. to 17:30 p.m. (Excluding December 29 to January 3)
  • 3) Languages Handled
    Six languages: Japanese, English, Chinese, Korean, Spanish, and Portuguese.

Past Information

内閣府 Cabinet Office, Government of Japan 〒100-8914 東京都千代田区永田町1-6-1
電話番号 03-5253-2111(大代表)