米国 · 申請要件

US Citizenship (N-400) 要件 2026

Q: How much does it cost to apply for US citizenship?

The N-400 application fee is $710 USD when filing online via myUSCIS, or $760 if filing on paper. Biometrics are INCLUDED in the fee — there is no separate $85 biometrics charge for N-400 since the April 2024 USCIS fee rule. A reduced fee of $380 is available for income between 150%–400% of the federal poverty guideline (requested directly in Part 10 of the current N-400). Below 150%, request a full waiver via Form I-912.

Q: How long does the N-400 process take?

Median processing is currently about 6 months nationally, with 80% of cases finishing in 6 to 10.5 months. Field-office variance is significant — some offices complete in under 3 months, others take 13+ months. Check egov.uscis.gov/processing-times for your specific field office before you plan around the timeline.

Q: How long do I need to be a green card holder to apply for citizenship?

5 years of continuous residence as a lawful permanent resident, with at least 30 months of physical presence in the US during that period. The waiting period shortens to 3 years if you are married to and living with a US citizen who has been a citizen for the full 3 years.

Q: Do I need to speak English to become a US citizen?

Yes — you must demonstrate basic English reading, writing, and speaking ability at the interview, plus pass a civics test on US history and government. Exemptions exist for applicants 50+ with 20+ years of LPR status (50/20 rule) or 55+ with 15+ years (55/15 rule), who may take the civics test in their native language with an interpreter.

Q: What is the US civics test for citizenship?

For applications filed on or after October 20, 2025, USCIS uses the 2025 Naturalization Civics Test: a 128-question study bank, the officer asks up to 20 questions, and you must answer 12 correctly to pass (or fail after 9 incorrect). Applications filed before October 20, 2025 use the older 2008 test (10 questions from 100, pass with 6). Study materials at uscis.gov/citizenship.

Q: Can I keep my original citizenship after becoming a US citizen?

The US permits dual citizenship and does not require you to renounce your other nationality. However, your country of origin may have its own rules — some countries automatically revoke citizenship when you naturalize elsewhere. Check your home country's rules before the oath ceremony.

Lawful permanent residents (green card holders) who have held LPR status for at least 5 years (3 years if married to a US citizen) and meet residency, physical presence, English-language, civics, and good-moral-character requirements.

発行 米国国務省 · 最終確認日 2026年5月28日 · 公式情報源 ↗

概要

申請手数料

Online filing: $710
Paper filing: $760
Reduced (income 150–400%): $380
Below 150% (Form I-912): Waived

時点 2026年5月28日 · 詳細

処理期間

Median nationally: ~6 months
80% of cases finish in: 6–10.5 months
Field-office range: <3 to 13+ months

詳細

発行機関

米国国務省

US Citizenship (N-400)が必要なのは？

申請場所

USCIS — file Form N-400 online via myUSCIS, or mail it to the USCIS lockbox for your address. Online filing is the recommended channel and saves $50.

手数料

Online filing: $710
Paper filing: $760
Reduced (income 150–400%): $380
Below 150% (Form I-912): Waived

$710 USD when filing online via myUSCIS, $760 paper. Biometrics are included in the fee — there is no separate biometrics charge for N-400. A reduced fee of $380 is available for applicants with income above 150% but not more than 400% of the federal poverty guideline (request via Part 10 of the current N-400 — standalone Form I-942 is no longer required). Full fee waiver via Form I-912 for those below 150%.

2026年5月28日時点の手数料です。お支払い前に公式情報源で最新金額をご確認ください。

持ち物

当日の窓口や申請時に必要な書類・持ち物。

Form N-400 (Application for Naturalization)
Copy of permanent resident card (both sides)
Application fee, reduced-fee request (built into Part 10), or fee-waiver Form I-912
Tax transcripts for the past 3–5 years
Marriage and divorce certificates (if filing under 3-year rule)
Selective Service registration proof (males 18–26 who lived in the US)
Two identical passport-style photos (only if filing from abroad)

写真の仕様をお探しですか？

正確なサイズ・頭の高さ・背景・却下されるポイント。

写真要件を開く →

所要期間は？

Median nationally: ~6 months
80% of cases finish in: 6–10.5 months
Field-office range: <3 to 13+ months

Currently ~6 months median nationally, with 80% of cases completing in 6–10.5 months. Field-office variance is huge: from under 3 months at fast offices to 13+ months at slow ones.

所要期間は申請地・時期・個別の状況によって変動します。渡航予約の前に、必ず公式情報源で現在の処理状況をご確認ください。

公式情報源

https://www.uscis.gov/n-400

最終確認日 2026年5月28日

申請前にご確認ください。 この情報は政府公式サイトをもとにまとめ、定期的に再確認しています。手数料・処理期間・規則は予告なく変わります — 申請や支払いの前に、必ず公式サイトで最新情報をご確認ください。

よくある質問

us citizenship (n-400)の申請に関するよくあるご質問。

How much does it cost to apply for US citizenship? +

The N-400 application fee is $710 USD when filing online via myUSCIS, or $760 if filing on paper. Biometrics are INCLUDED in the fee — there is no separate $85 biometrics charge for N-400 since the April 2024 USCIS fee rule. A reduced fee of $380 is available for income between 150%–400% of the federal poverty guideline (requested directly in Part 10 of the current N-400). Below 150%, request a full waiver via Form I-912.

How long does the N-400 process take? +

Median processing is currently about 6 months nationally, with 80% of cases finishing in 6 to 10.5 months. Field-office variance is significant — some offices complete in under 3 months, others take 13+ months. Check egov.uscis.gov/processing-times for your specific field office before you plan around the timeline.

How long do I need to be a green card holder to apply for citizenship? +

5 years of continuous residence as a lawful permanent resident, with at least 30 months of physical presence in the US during that period. The waiting period shortens to 3 years if you are married to and living with a US citizen who has been a citizen for the full 3 years.

Do I need to speak English to become a US citizen? +

Yes — you must demonstrate basic English reading, writing, and speaking ability at the interview, plus pass a civics test on US history and government. Exemptions exist for applicants 50+ with 20+ years of LPR status (50/20 rule) or 55+ with 15+ years (55/15 rule), who may take the civics test in their native language with an interpreter.

What is the US civics test for citizenship? +

For applications filed on or after October 20, 2025, USCIS uses the 2025 Naturalization Civics Test: a 128-question study bank, the officer asks up to 20 questions, and you must answer 12 correctly to pass (or fail after 9 incorrect). Applications filed before October 20, 2025 use the older 2008 test (10 questions from 100, pass with 6). Study materials at uscis.gov/citizenship.

Can I keep my original citizenship after becoming a US citizen? +

The US permits dual citizenship and does not require you to renounce your other nationality. However, your country of origin may have its own rules — some countries automatically revoke citizenship when you naturalize elsewhere. Check your home country's rules before the oath ceremony.