Form N-400 Processing Time
The Form N-400 processing time ranges from about 6 to 10 months for many applicants. But that estimate only shows the final timeline for becoming a U.S. citizen through naturalization. See what happens after N-400 submission. Once you file, your case moves through several USCIS stages:
N-400 Processing Time: Receipt of Application
After USCIS accepts your Form N-400 for processing, they send a receipt notice confirming your application. The mailed notice — Form I-797C, Notice of Action — usually arrives within 2 to 4 weeks. If the application is incorrect or incomplete, USCIS will reject it and return the package, delaying your request and increasing the overall N-400 processing time.
Save your N-400 receipt notice. It contains your 10-digit receipt number. You can use this receipt number to check your case status. If you didn’t receive a Notice of Action, you can make a case inquiry.
N-400 Rejection Statistics
Source: USCIS FY2025
Biometrics Appointment
Approximately 4 to 6 weeks after filing, USCIS will likely schedule a biometrics appointment to collect your fingerprints, photo, and signature for background checks. The appointment notice lists the date, time, and location. The visit usually takes less than 20 minutes. Attend as scheduled — rescheduling can delay your N-400 processing time.
To learn more about what happens at the appointment, what to take and where you'll go, see our overview of the USCIS biometrics appointment →
Historical N-400 Processing Times at USCIS
The graph below shows median naturalization processing times (in months) over the past 10 fiscal years. USCIS made noticable improvements in recent years. Applicants are encouraged to prepare thoroughly and file promptly to minimize potential delays.
Source: USCIS
Naturalization Interview
USCIS typically schedules the naturalization interview about 5 to 8 months after filing Form N-400. The interview usually lasts less than 30 minutes. Make every effort to attend as scheduled — rescheduling can add several weeks to your overall N-400 processing time.
During the appointment, a USCIS officer will review your application to confirm your answers. They will also test your English (speaking, reading, and writing) and administer the civics exam. In many cases, applicants receive a decision the same day or shortly after.
If approved, the next step is the oath ceremony. However, some cases may be continued for additional evidence or further review, which can delay processing.
To prepare, review your application carefully and understand what to expect at the test and interview. See our guide on how to prepare for the U.S. citizenship test and interview →
N-400 Backlog Report
The graph below shows the number of open cases at the end of each fiscal year. USCIS reduced the backlog quickly after the pandemic, but delays are beginning to build again. If not addressed, a growing backlog could lead to longer N-400 processing times.
Source: USCIS
N-400 Processing Time: Oath of Allegiance Ceremony
If your naturalization application is approved, USCIS will schedule you for an oath ceremony. Most applicants attend the ceremony about 6 to 10 months after filing Form N-400, though timing can vary by location.
The appointment notice includes questions you must complete before the ceremony. You are not a U.S. citizen until you take the Oath of Allegiance. Ceremonies are conducted by USCIS or, in some locations, by a court.
After taking the oath, you’ll turn in your green card and receive your Certificate of Naturalization. Before leaving, review the certificate carefully and report any errors immediately to avoid delays in correcting it. Congratulations! You are a U.S. citizen.
Affordable Immigration Support For N-400 Preparation
What If Your N-400 Processing Time Is Taking Too Long?
If your N-400 processing time seems longer than expected, you’re not alone. USCIS processing times can vary widely, and delays are common depending on workload, background checks, and case complexity.
Is Your Case Outside Normal Processing Time?
USCIS publishes estimated processing times for Form N-400. If your case is still within that range, it may not be considered delayed. However, if your case is outside normal processing time, you may be able to take action.
- Check your USCIS case status online
- Compare your receipt date with current USCIS processing times
- Review any notices or requests from USCIS
Common Reasons for N-400 Delays
- Requests for Evidence (RFE)
- Background check processing
- High USCIS workload
- Oath ceremony delays and scheduling
How to Submit an Inquiry
If your N-400 processing time is outside the normal range, you can submit an “outside normal processing time” inquiry through USCIS. This allows you to request an update on your case.