Last updated: January 2026
U.S. naturalization takes 12–18 months on average, covering six steps: eligibility check, N-400 filing, biometrics, interview, decision, and oath ceremony.
Naturalization is the process by which lawful permanent residents become U.S. citizens. The timeline varies significantly by USCIS field office—some applicants finish in under a year, while others wait 24 months or longer.
This guide breaks down each step with current processing estimates so you know what to expect.
What Is the Current Naturalization Timeline?
Most applicants complete naturalization in 12–18 months, though high-volume offices like New York or Los Angeles may take 18–24 months.
USCIS processing times fluctuate based on application volume, staffing, and your specific field office. You can check current estimates for your local office on the USCIS website.
| Step | Typical Timeframe |
|---|---|
| File N-400 → Receipt notice | 2–3 weeks |
| Receipt → Biometrics appointment | 1–2 months |
| Biometrics → Interview scheduling | 6–12 months |
| Interview → Decision | Same day to 2 weeks |
| Approval → Oath ceremony | Same day to 3 months |
Timeframes are estimates based on typical USCIS processing. Individual cases may vary.
Who Is Eligible to Apply for Naturalization?
Most applicants need a green card for 5 years (3 years if married to a U.S. citizen), plus physical presence, continuous residence, and good moral character.
Eligibility requirements are set by the Immigration and Nationality Act. Meeting them is mandatory—USCIS will deny applications that fall short.
Basic eligibility requirements:
- Green card duration: 5 years as a lawful permanent resident (3 years if married to and living with a U.S. citizen)
- Continuous residence: Lived in the U.S. continuously during the required period without trips abroad exceeding 6 months
- Physical presence: Physically present in the U.S. for at least 30 months of the past 5 years (18 months for 3-year applicants)
- State residence: Lived in the state where you’re applying for at least 3 months
- Good moral character: No disqualifying criminal history or immigration violations
- English and civics: Ability to read, write, and speak basic English; knowledge of U.S. history and government
You can file Form N-400 up to 90 days before meeting the green card duration requirement. Filing earlier will result in denial.
How Do You File Form N-400?
File N-400 online at uscis.gov or by mail with supporting documents and the $760 filing fee ($380 reduced fee for eligible applicants).
Form N-400 is the Application for Naturalization. Online filing is faster and lets you track your case in real time. Paper filing takes longer for USCIS to process.
Required documents typically include:
- Copy of your green card (front and back)
- Two passport-style photos
- Filing fee payment ($760 total, or request fee waiver if eligible)
- Marriage certificate if applying based on marriage to U.S. citizen
- Evidence of spouse’s citizenship if applicable
After USCIS receives your application, you’ll get Form I-797C (receipt notice) confirming your case is in the system. Keep this notice—you’ll need the receipt number to check your status.
What Happens at the Biometrics Appointment?
USCIS collects your fingerprints, photo, and signature for an FBI background check—the appointment takes about 20 minutes.
Within 1–2 months of filing, USCIS schedules your biometrics appointment at an Application Support Center (ASC). You’ll receive a notice with the date, time, and location.
Bring your appointment notice and a valid photo ID (green card, passport, or state ID). The process is straightforward: fingerprints are scanned digitally, your photo is taken, and you sign electronically.
If you can’t make your scheduled appointment, you can usually walk in at the same ASC within the window printed on your notice or request rescheduling through USCIS.
What Should You Expect at the Naturalization Interview?
The interview includes N-400 review, an English test (reading, writing, speaking), and a civics test (6 of 10 questions correct to pass).
The interview is the most substantive step. A USCIS officer reviews your application, verifies your identity, and administers the citizenship tests. Most interviews last 20–30 minutes.
What to bring:
- Interview appointment notice
- Green card and any other immigration documents
- State-issued ID or passport
- Passport (including expired passports) showing travel history
- Any documents USCIS specifically requested
Civics test: The officer asks up to 10 questions from a list of 100 possible questions about U.S. history and government. You must answer 6 correctly to pass. Study materials are available free on uscis.gov.
English test: You’ll read one sentence aloud, write one sentence dictated by the officer, and demonstrate speaking ability through the interview conversation itself.
If you fail either test, USCIS will schedule a second interview within 60–90 days to retake the portion you failed.
When Do You Get a Decision on Your Application?
Most applicants receive a decision the same day as their interview—you’ll get Form N-652 showing granted, continued, or denied.
At the end of your interview, the officer hands you Form N-652, which shows one of three outcomes:
Granted: You passed. You’ll either receive oath ceremony details immediately or get a notice in the mail within a few weeks.
Continued: USCIS needs additional documents or you need to retake part of the test. You’ll receive instructions on next steps.
Denied: Your application was rejected. You’ll receive a written explanation and information about appeal rights.
What Happens at the Oath Ceremony?
You take the Oath of Allegiance, surrender your green card, and receive your naturalization certificate—you’re a U.S. citizen the moment you complete the oath.
The oath ceremony is the final step. Some applicants complete it the same day as their interview (administrative oath ceremonies). Others attend a larger ceremony at a courthouse or USCIS office weeks later.
At the ceremony:
- Check in and return your green card
- Review and sign your naturalization certificate
- Stand with other new citizens and recite the Oath of Allegiance
- Receive your Certificate of Naturalization (Form N-550)
Your naturalization certificate is proof of citizenship. Keep it safe—you’ll need it to apply for a U.S. passport and may need it for other purposes throughout your life.
What Can Delay the Naturalization Process?
Background check issues, incomplete applications, and name discrepancies are the most common causes of naturalization delays.
Some delays are outside your control. Others can be avoided with careful preparation.
Common causes of delay:
- FBI background check: If your name matches someone in a database, clearance takes longer
- Missing documents: Incomplete applications trigger requests for evidence (RFEs), adding weeks or months
- Name or date discrepancies: Differences between your green card, passport, and N-400 require explanation
- Criminal history: Even minor offenses require court documents and additional review
- Extended travel abroad: Trips over 6 months may raise continuous residence questions
- High-volume field offices: Offices in major metro areas consistently have longer wait times
If your case has been pending beyond normal processing times with no update, you can submit a case inquiry through USCIS or file a federal lawsuit (mandamus action) to compel a decision.
Schedule a Consultation
Parikh Law Group helps applicants navigate the naturalization process from eligibility assessment through oath ceremony. We review applications for accuracy, prepare clients for interviews, and address complications that arise along the way.
Contact our office at 973-577-5159 to discuss your path to U.S. citizenship.
