After you file Form N-400, USCIS sends you a receipt notice and begins processing your naturalization application through several steps: a biometric appointment, background check, naturalization interview, and civics test. The entire process typically takes months to complete, though processing times vary significantly by location.
USCIS does not make an immediate decision. Instead, each applicant moves through a defined sequence that ends with an interview and, if approved, a swearing-in ceremony. Understanding these steps helps you prepare documents, study for the test, and know what to expect.
Table of Contents
- What USCIS Does When Your Application Arrives
- Biometric Services Appointment
- The Naturalization Interview and Civics Test
- Decision and Oath of Allegiance
- Costs and Preparation Timeline
- Frequently Asked Questions
What USCIS Does When Your Application Arrives
When uscis receives your N-400, they send you a Notice of Action (receipt notice) within weeks. This notice includes your case number, which you use to check processing status and request information. At the same time, USCIS assigns your case to a local office and begins reviewing your application for completeness.
If required documents are missing, USCIS will send a Request for Evidence (RFE), typically by mail. You will have a set time to respond; failing to do so may result in denial. During this initial review, USCIS also schedules your biometric services appointment, which cannot be skipped.
Biometric Services Appointment
A few weeks after filing, USCIS sends you a Notice of Biometric Services Appointment with a date, time, and location. At the appointment, a technician takes your fingerprints, photograph, and signature for a background check. Bring your appointment notice, a valid government-issued ID, and your green card.
Do not miss this appointment; if you cannot attend, call the number on your notice to reschedule. Missing it without rescheduling can result in case denial. The background check typically completes within weeks, after which USCIS schedules your interview.
The Naturalization Interview and Civics Test
Your interview is typically scheduled several months after filing, depending on your local USCIS office workload. During the interview, an officer will review your N-400 answers, verify your residence and work history, and test your knowledge of U.S. civics and English. The civics test asks 10 questions from a pool of 100 possible questions about the Constitution, government structure, and American history.
You must answer at least six correctly to pass. USCIS publishes the complete civics test online, so you can study the exact questions beforehand. The English portion tests your ability to read, write, and speak English; most applicants demonstrate this through the interview conversation itself.
Decision and Oath of Allegiance
After your interview, USCIS makes a decision within weeks. If you passed the civics test and met all other requirements, they approve your application and schedule you for the Oath of Allegiance ceremony. At this ceremony, held at a USCIS office or courthouse, you take an oath to support the U.S. Constitution and renounce allegiance to your former country.
You receive your Certificate of Naturalization the same day—this is your official proof of U.S. citizenship. If USCIS denies your application, they will explain the reasons in writing. You may request reconsideration if you have new evidence, or you can reapply after addressing the stated grounds for denial.
Costs and Preparation Timeline
Filing N-400 costs $640 for the application fee plus $85 for biometrics (as of 2025). You cannot work on this process quickly; expect the entire timeline from filing to oath ceremony to take 8 to 12 months or longer depending on your location. Start preparing now by reviewing the civics test questions, gathering original documents (birth certificate, passport, green card, employment and residence records), and organizing proofs of your continuous residence. Bring all requested documents to your interview; missing originals can delay approval even if USCIS approved you conditionally.
Frequently Asked Questions
Can I work while my N-400 is pending?
Yes. Your green card remains valid and you can continue working until USCIS makes a decision.
What if I fail the civics test?
USCIS gives you one opportunity to retake it, typically scheduled 60–90 days after your initial interview.
Do I need a lawyer for the naturalization process?
Not legally required, but you can hire an immigration attorney to review your application and prepare you for the interview.