Form N-400 is the application for United States citizenship through naturalization. It is filed by lawful permanent residents who meet the eligibility requirements, including residency and physical presence.
Quick Facts
Official Name
N-400 — Application for Naturalization
Filing Fee
$710
Processing Time
6–12 months
Premium Processing
Not available
Purpose
Apply for U.S. citizenship through the naturalization process.
Common Case Statuses
Case Was Received
Case Is Being Actively Reviewed
Interview Was Scheduled
Oath Ceremony Was Scheduled
Case Was Approved
Tips
You can file up to 90 days before meeting the residency requirement (typically 5 years, or 3 years if married to U.S. citizen)
The citizenship test covers 100 civics questions and an English reading/writing test
Continuous residence and physical presence requirements must be met at the time of filing and interview
If denied, you can refile or appeal depending on the reason for denial
After the oath ceremony, you receive your Certificate of Naturalization and can apply for a U.S. passport