N-400 naturalization processing time — full timeline
From green card to oath ceremony — the four-stage citizenship path.
For lawful permanent residents who meet the residency requirement (5 years, or 3 years for spouses of US citizens) and are ready to apply for US citizenship.
N-400 timing has compressed: USCIS cleared a major backlog through 2023–2024, and many field offices now run the entire process in 6 to 10 months from filing to oath.
Journey
N-400 USCIS adjudication
Application for Naturalization. USCIS reviews eligibility — continuous residence, physical presence, good moral character, English and civics — before scheduling the interview.
Biometrics appointment
USCIS Application Support Center collects fingerprints, photo, and signature for the FBI background check. Scheduled by notice after USCIS receipts the underlying form.
Naturalization interview
In-person interview at a USCIS field office covering the application, the English language test, and the civics test (10 questions, must answer 6 correctly under the 2008 test).
Oath of allegiance ceremony
Final step of naturalization. After the N-400 interview is approved, USCIS schedules a ceremony where the applicant takes the oath and receives the Certificate of Naturalization.
Current bottlenecks
Field-office variance is the main story — Houston and Newark currently run faster than San Francisco and Boston. Same-day oath ceremonies (oath immediately after the approved interview) are increasingly common and cut weeks off the tail.
FAQ
How long does N-400 take?[+]
Currently 6 to 12 months from filing to oath ceremony in most field offices. Some offices offer same-day oath, compressing the entire post-filing timeline to 4 to 6 months.
When can I apply for citizenship?[+]
Five years after green card approval (three if you remain married to and living with a US citizen the whole time, or one year for certain military service). You can file up to 90 days early.
What is the civics test and how do I prepare?[+]
A 10-question oral test of US history and government drawn from a publicly available 100-question bank. You must answer 6 correctly. USCIS publishes free study materials and video preparation tools.
Can I travel internationally while N-400 is pending?[+]
Yes, but trips over 6 months risk breaking continuous residence and trips over 1 year automatically break it. Document every trip — USCIS will ask at interview.
What happens at the oath ceremony?[+]
You take the Oath of Allegiance, surrender your green card, and receive your Certificate of Naturalization. From that moment you can apply for a US passport — same-day passport agencies are walk-in.
Can I keep my original citizenship after naturalizing?[+]
The US does not require renunciation of other citizenships, so dual or multiple citizenship is allowed under US law. Whether your original country permits it depends on its laws — some countries auto-revoke, others do not.