U.S. Naturalization Timeline: From N-400 to Oath Ceremony

Quick answer (verified 2026-06-17 by CivicFlare):

From filing Form N-400 to the oath ceremony, the process generally takes 8 to 14 months, depending on your local USCIS field office processing times and the complexity of your case.

The naturalization process follows a clear sequence of milestones. From filing Form N-400 to taking the Oath of Allegiance, the entire citizenship process timeline generally takes 8 to 14 months, depending on your local USCIS field office.

The 4 Main Steps of Naturalization

  1. File Form N-400: Submit your Application for Naturalization online or by mail. You receive a receipt notice within 2–3 weeks.
  2. Attend Biometrics: USCIS schedules a biometrics (fingerprinting) appointment, usually 1–2 months after filing, to run your background check.
  3. Pass the Interview & Tests: Typically 5–10 months after filing, a USCIS officer reviews your N-400, tests your English, and administers the civics test. Prepare with our free practice test, flashcards, and audio lessons.
  4. Take the Oath of Allegiance: A few weeks after approval, you attend the oath ceremony and officially become a U.S. citizen.

Frequently Asked Questions

How long does the naturalization process take?

From filing Form N-400 to the oath ceremony, the process generally takes 8 to 14 months, depending on your local USCIS field office processing times and the complexity of your case.

What is the exact N-400 timeline?

After submitting Form N-400 you receive a receipt in 2–3 weeks, a biometrics appointment in 1–2 months, the interview 5–10 months after filing, and the oath ceremony a few weeks after approval.

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