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Amanda Foster — Reviewed writer, former magazine editor
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How to Handle Become a Japanese Citizen Step by Step

When become a japanese citizen leaves you confused, worried, or unsure what it means, a clear step-by-step approach can help you sort the signal from the stress. This guide explains how to understand the situation, reflect on what matters, choose a practical next step, and know when to ask for trusted support.

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Part 1

Acquiring Japanese Citizenship for Foreign Nationals

1

Maintain a domicile in Japan for at least five consecutive years.

Maintain a domicile in Japan for at least five consecutive years.
Before you can apply for citizenship in Japan, you must maintain a domicile in the country for at least five consecutive years. You may be able to gain citizenship in Japan without meeting this requirement, if you can satisfy any one of the following conditions:
  • You have been living abroad for at least 10 years.
  • You are married to a Japanese citizen and have lived together for at least 3 years.
  • You have made significant contributions to Japan, such as through volunteer work or business development.
  • You have a serious illness that prevents you from living abroad.
  • Before you can apply for citizenship in Japan, you must maintain a domicile in the country for at least five consecutive years.
2

Be at least 20 years old.

Be at least 20 years old.
Age is just one factor in determining eligibility for citizenship. Meeting this requirement does not guarantee approval. Citizenship is granted based on a variety of factors, including conduct and support.
  • Age is just one factor in determining eligibility for citizenship.
  • Meeting this requirement does not guarantee approval.
  • Citizenship is granted based on a variety of factors, including conduct and support.
  • Age is just one factor in determining eligibility for citizenship.
  • Meeting this requirement does not guarantee approval.
3

Demonstrate that you are “of upright conduct.”

Demonstrate that you are “of upright conduct.”
This means demonstrating good moral character, honesty, and integrity. You must show that you have been a law-abiding citizen for at least 5 years. Any past mistakes or infractions will be taken into account during the application process.
  • This means demonstrating good moral character, honesty, and integrity.
  • You must show that you have been a law-abiding citizen for at least 5 years.
  • Any past mistakes or infractions will be taken into account during the application process.
  • This means demonstrating good moral character, honesty, and integrity.
  • You must show that you have been a law-abiding citizen for at least 5 years.
4

Demonstrate that you are able to support yourself in Japan.

Demonstrate that you are able to support yourself in Japan.
The legal standard is that you must be able to "secure a livelihood" either through work or through property that you may own. If you are married, and your spouse provides the income for the family, this requirement is satisfied.
  • You have a stable job with a steady income.
  • You own a business or property in Japan.
  • You have sufficient savings to support yourself during the application process.
  • The legal standard is that you must be able to "secure a livelihood" either through work or through property that you may own.
  • If you are married, and your spouse provides the income for the family, this requirement is satisfied.
Part 2

Becoming a Japanese Citizen by Acknowledgment

1

Meet the minimum requirements for citizenship.

Meet the minimum requirements for citizenship.
You must be at least 20 years old and meet specific residency requirements. You can claim citizenship if you have one Japanese parent but are unmarried. You must demonstrate that you are of upright conduct and able to support yourself in Japan. The application process will require a personal appearance at the Ministry of Justice.
  • You must be at least 20 years old and meet specific residency requirements.
  • You can claim citizenship if you have one Japanese parent but are unmarried.
  • You must demonstrate that you are of upright conduct and able to support yourself in Japan.
  • The application process will require a personal appearance at the Ministry of Justice.
  • You must be at least 20 years old and meet specific residency requirements.
2

Report in person to the appropriate office.

Report in person to the appropriate office.
If you reside in Japan, report to the district legal affairs bureau for the district where you are living. If you reside outside of Japan, visit any Japanese embassy or consulate. Be prepared to provide all required documents and information. The application process will take several months to complete.
  • If you reside in Japan, report to the district legal affairs bureau for the district where you are living.
  • If you reside outside of Japan, visit any Japanese embassy or consulate.
  • Be prepared to provide all required documents and information.
  • The application process will take several months to complete.
  • If you reside in Japan, report to the district legal affairs bureau for the district where you are living.
3

Provide notification that you claim citizenship.

Provide notification that you claim citizenship.
You must notify the Ministry of Justice in writing that you wish to claim citizenship. This notification should include all required information and documentation. The application will be reviewed, and a decision will be made regarding your eligibility for citizenship. If approved, you will be granted Japanese citizenship and receive a certificate of naturalization.
  • You must notify the Ministry of Justice in writing that you wish to claim citizenship.
  • This notification should include all required information and documentation.
  • The application will be reviewed, and a decision will be made regarding your eligibility for citizenship.
  • If approved, you will be granted Japanese citizenship and receive a certificate of naturalization.
  • You must notify the Ministry of Justice in writing that you wish to claim citizenship.

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