How long does the N-400 naturalization process take?

The total time from filing Form N-400 to taking the Oath of Allegiance varies significantly by USCIS field office and current processing volumes. Typical timelines have ranged from about 6-8 months in faster offices to 18-24 months or more in slower ones. The biometrics appointment is often scheduled relatively early in the process, but timing varies by USCIS workload and whether USCIS reuses prior biometrics. USCIS publishes processing time estimates at egov.uscis.gov/processing-times — check for current estimates for your specific field office. Once your interview is approved, the Oath Ceremony is typically scheduled within 1-3 months.

How much does it cost to apply for U.S. citizenship?

As of the current USCIS fee schedule, N-400 fees vary by filing method and fee-reduction/waiver eligibility, and include both the application fee and the biometrics fee. Some applicants qualify for fee waivers (using Form I-912) if their household income is at or below 150% of the Federal Poverty Guidelines, or for reduced fees if their household income is between 150% and 200% of the Federal Poverty Guidelines. Verify the exact current amount using the USCIS Fee Calculator at uscis.gov before submitting — using outdated fee information can result in your application being rejected. Beyond the filing fee, applicants should budget for any necessary attorney fees, document copying, translations, and certified copies of court records (if applicable).

How long do you need to be a Green Card holder before applying for citizenship?

Most applicants need to be a lawful permanent resident (Green Card holder) for at least 5 years before applying for U.S. citizenship. There is a 3-year exception for applicants who have been married to and living with the same U.S. citizen spouse for the past 3 years (and the spouse must have been a U.S. citizen for those 3 years). Some shorter periods apply in special situations including certain military service members. Time spent outside the U.S. for extended periods can break "continuous residence" and effectively reset the clock. You can technically file Form N-400 up to 90 days before reaching the 5-year (or 3-year) anniversary of becoming a permanent resident, but you must still satisfy continuous residence and physical presence requirements as of the date you naturalize.

What is the Oath of Allegiance?

The Oath of Allegiance is the formal pledge of loyalty to the United States that every new naturalized U.S. citizen takes at the naturalization ceremony. The oath includes promises to support the Constitution and laws of the United States, renounce allegiance to other countries, defend the Constitution against all enemies, perform military service or civilian work for the United States when required by law, and bear true faith and allegiance to the U.S. The oath is taken aloud, usually with hundreds of other new citizens at a group ceremony. Once you take the oath, you officially become a U.S. citizen — that moment is when your citizenship begins. After the ceremony, you receive your Certificate of Naturalization, which is your official document proving U.S. citizenship.

Can you fail the citizenship test?

Yes. If you fail the English language tests or the civics test at your initial interview, USCIS typically gives you a second chance — you'll be scheduled for a re-examination within 60-90 days, where you'll only be retested on the parts you failed (not your entire application). If you fail the second time as well, your N-400 application will likely be denied. You can then either appeal the denial (using Form N-336) or refile a new N-400 application after addressing the issues. The most common reason for failing is inadequate preparation for the civics test or English language tests. The civics test material is publicly available — study guides, flashcards, and practice tests are widely available, including from USCIS itself. Preparation substantially improves your chances of passing on the first try.

N-400 Application Process Walkthrough — Citizenship Step-by-Step (2026)

TL;DR

The Form N-400, Application for Naturalization, is the application U.S. lawful permanent residents (Green Card holders) submit to become U.S. citizens. The naturalization process has several stages: eligibility check (basic requirements), prepare and file Form N-400 (online or by mail with the filing fee), biometrics appointment (fingerprints and photo at a USCIS office), interview and tests (English speaking/reading/writing tests and civics test, plus an interview about your application), decision (granted, continued, or denied), and Oath of Allegiance ceremony (where you take the oath and become a U.S. citizen). The total timeline typically runs from a few months to over a year, depending on USCIS processing times in your area. Filing fees and exact timelines change periodically — always verify current information at uscis.gov before filing.

Important — which civics test you take depends on your filing date: Applicants who filed Form N-400 before October 20, 2025 generally take the 2008 civics test (100-question pool, up to 10 questions asked, 6 correct required to pass). Applicants who filed on or after October 20, 2025 take the 2025 civics test (128-question pool, up to 20 questions asked, 12 correct required to pass; fail at 9 incorrect). The English reading, writing, and speaking requirements are unchanged. Knowing the steps, requirements, and what happens at each stage helps you prepare and avoid common mistakes.

Who Can Apply (Basic Eligibility)

Before filing Form N-400, you generally need to meet these basic requirements:

Age Requirement

You must be at least 18 years old at the time of filing. (Some children of U.S. citizens may already acquire or derive citizenship through a different legal process and may use Form N-600 to request a Certificate of Citizenship instead of filing N-400.)

Lawful Permanent Resident (LPR) Status

You must have been a lawful permanent resident (Green Card holder) for at least:
- 5 years for most applicants, OR
- 3 years if you have been married to and living with the same U.S. citizen spouse for the past 3 years, OR
- Other shorter periods in some special cases (military service, certain humanitarian situations)

Continuous Residence

You must have continuously resided in the United States as a Green Card holder for the required period (5 or 3 years).
Trips outside the U.S. of less than 6 months generally don't break continuous residence; longer trips can break it and may reset your eligibility clock.

Physical Presence

You must have been physically present in the U.S. for at least:
- 30 months out of the past 5 years (for the 5-year applicants), OR
- 18 months out of the past 3 years (for the 3-year marriage-based applicants)

State Residence

You must have lived in the state or USCIS district where you're filing for at least 3 months before filing.

Good Moral Character

You must demonstrate good moral character during the period required for eligibility. Certain criminal convictions, fraud, lies on immigration forms, or other conduct can prevent naturalization.

English Language Ability

You must be able to read, write, speak, and understand English. Limited exceptions exist for:
- Applicants 50+ with 20+ years as a Green Card holder (50/20 exception)
- Applicants 55+ with 15+ years as a Green Card holder (55/15 exception)
- Applicants with qualifying medical conditions (filed via Form N-648)

Knowledge of U.S. Government and History

You must demonstrate knowledge of basic U.S. government and history through the civics test. (Some older long-term permanent residents qualify for a simplified version.)

Attachment to the Constitution

You must show you support the principles of the U.S. Constitution and are willing to take the Oath of Allegiance to the United States.

Step 1: Verify Your Eligibility

Before filing, carefully review the eligibility requirements at uscis.gov or with a qualified immigration attorney. Common eligibility issues that derail applications include:

Recent extended trips abroad that may have broken continuous residence
Criminal records (even old or dismissed cases can matter)
Failure to file required tax returns
Failure to register for Selective Service (males between 18-26 must register)
Falsifying past immigration documents

If you have any concerns, consider consulting an immigration attorney before filing — fixing problems at this stage is much easier than fixing them after a denial.

Step 2: Prepare Form N-400

Form N-400 is a multi-page application asking for detailed information about:

Your personal background (name, date of birth, addresses for the past 5 years)
Your immigration history (date and place you became a permanent resident, A-Number)
Your work and education history
Your family (parents, spouse, children)
Your travels outside the U.S. (every trip in the past 5 years, including dates and destinations)
Any criminal history (including arrests, even if charges were dismissed)
Your moral character (questions about honesty, taxes, marriage, etc.)
Selective Service registration (if applicable)
Your willingness to take the Oath of Allegiance

Tips for filling out Form N-400:

Be completely honest. Lying on Form N-400 is grounds for denial AND can lead to denaturalization later if discovered.
List everything the form asks. Disclose arrests, charges, citations, and court matters as the form asks, even if they were dismissed or expunged. For minor traffic or parking matters, follow the current Form N-400 instructions carefully. When in doubt, disclose.
Use exact information from your Green Card. Your A-Number, name spelling, and other details should match exactly.
Gather supporting documents before filing: copy of your Green Card, marriage certificates, divorce decrees, tax records, court records (if any), passport showing trip stamps, etc.

Step 3: File Form N-400

You can file Form N-400 in two ways:

Online Filing

Create a USCIS online account at my.uscis.gov
Complete and submit Form N-400 electronically
Pay the filing fee online
Upload supporting documents
Track your case status online

Paper Filing

Print and complete the most current version of Form N-400 (download from uscis.gov)
Mail the completed form, supporting documents, and filing fee to the appropriate USCIS Lockbox address (the address depends on where you live and is listed on the form instructions)
Use trackable mail (Certified Mail with Return Receipt, FedEx, etc.)

Filing Fee

As of the current USCIS fee schedule, N-400 fees vary by filing method (online vs paper) and fee-reduction/waiver eligibility. Verify the exact current amount using the USCIS Fee Calculator at uscis.gov before filing, because incorrect fees can cause rejection. The current fee schedule accounts for required filing and biometric-services costs where applicable. Some applicants qualify for fee waivers (Form I-912) or reduced fees based on financial hardship.

After filing, USCIS will send you a Receipt Notice (Form I-797C) confirming they received your application. Keep this notice — you'll need the receipt number to track your case.

Step 4: Biometrics Appointment

After filing, USCIS will schedule a biometrics appointment at an Application Support Center (ASC) near you. At this appointment, you'll have:

Your fingerprints taken (digital scan)
Your photo taken
Your signature captured

USCIS uses this information to run background checks against FBI databases and other security systems.

What to bring:

Your appointment notice (Form I-797C)
A photo ID (Green Card, driver's license, passport)

The appointment itself usually takes 15-30 minutes. If you can't make the appointment, request a reschedule promptly — missing biometrics without rescheduling can lead to denial.

In some cases, USCIS may waive the in-person biometrics appointment and reuse your existing biometrics from your Green Card application.

Step 5: Wait for the Interview

After biometrics, you wait for USCIS to schedule your citizenship interview. Wait times vary significantly by USCIS field office — some offices schedule interviews within a few months, others take a year or more.

You can track your case status at egov.uscis.gov/casestatus.

While waiting:

Study for the civics test. Your civics-test version depends on your Form N-400 filing date. Applicants who filed before October 20, 2025 generally take the 2008 civics test: USCIS provides 100 questions (the "100 civics questions"), the test asks up to 10 of them, and you must answer 6 correctly to pass. Applicants who filed on or after October 20, 2025 take the 2025 civics test: USCIS uses a 128-question pool, asks up to 20 questions, and requires 12 correct to pass (the test ends early at 9 wrong). Use USCIS's official study materials for whichever version applies to you.
Practice English. You'll be tested on speaking, reading, and writing English at the interview.
Keep your records updated. Update USCIS if you move (using Form AR-11), change your name, or have other significant changes.
Stay out of trouble. A criminal arrest while your N-400 is pending can derail your application.

Step 6: The Interview

The naturalization interview is the most important step. It includes:

English Tests

The interview itself is conducted in English (with limited exceptions). You'll be tested on:

Speaking: Through your conversation with the officer during the interview
Reading: Read aloud one of three sentences correctly
Writing: Write one of three sentences correctly

Civics Test

Your civics-test version depends on your Form N-400 filing date:

2008 civics test (applicants who filed before October 20, 2025): up to 10 questions from a 100-question list, 6 correct required to pass. The test stops as soon as you've answered 6 correctly. Some older long-term permanent residents take a modified test (10 questions from a shorter list, 6 correct to pass).
2025 civics test (applicants who filed on or after October 20, 2025): up to 20 questions from a 128-question list, 12 correct required to pass. The test stops once you reach 12 correct or 9 incorrect. The 65/20 rule still provides a simplified version (10 of 20 designated questions, 6 correct to pass) for applicants 65+ with 20+ years as Green Card holders.

Application Review

The officer will go through your N-400 application with you, asking questions about:

Your background and any inconsistencies in your application
Your trips outside the U.S.
Your moral character (criminal history, taxes, etc.)
Your willingness to take the Oath of Allegiance
Any issues raised during background checks

At the end of the interview, the officer typically gives you Form N-652 (Notice of Examination Results), which tells you whether you passed, failed, or your case was continued for further review.

Possible Outcomes

Granted — You passed everything; the officer recommends approval. You'll be scheduled for the Oath Ceremony.
Continued — Something needs follow-up (additional documents, retake of test, etc.). You may be re-interviewed within 60-90 days.
Denied — Your application is denied. You can appeal (Form N-336) or refile.

Step 7: Oath of Allegiance Ceremony

If your application is approved, you'll be scheduled for the Oath of Allegiance Ceremony (also called the naturalization ceremony). At this ceremony:

You take the Oath of Allegiance to the United States, where you renounce allegiance to other countries and pledge loyalty to the U.S.
You receive your Certificate of Naturalization — your official document proving you are now a U.S. citizen.
You officially become a U.S. citizen at the moment you take the oath.

At the ceremony:

Bring your appointment notice and Green Card (you'll surrender the Green Card)
Dress respectfully (some ceremonies are in courthouses)
The ceremony usually takes 1-2 hours and includes patriotic content (the National Anthem, the Pledge of Allegiance, often a video from the President)

After the ceremony:

Apply for a U.S. passport (you can do this immediately)
Update your Social Security record
Register to vote (federal voting requires citizenship)

Common Mistakes to Avoid

Filing too early. Verify you meet ALL eligibility requirements at the time of filing. Filing one day too early can result in denial.
Not disclosing arrests. Even if charges were dismissed or expunged, disclose them when N-400 asks. Failure to disclose is itself grounds for denial and worse — fraud.
Long trips abroad. Trips of 6+ months may break continuous residence. Trips of 1+ year almost always break it. Plan around this requirement.
Tax issues. Failure to file required tax returns or owing significant back taxes can affect "good moral character." File any missing returns and resolve tax issues before filing N-400.
Failing to register for Selective Service. If you were required to register while living in the U.S. between ages 18 and 26, failure to register can affect "good moral character" analysis.
Misspelling your name or A-Number. Use the exact information from your Green Card.
Inadequate civics test preparation. USCIS publishes the official questions for both test versions; study the version that applies to your Form N-400 filing date. The civics test is a common reason for failed interviews.

Common Citizenship Test Questions Beyond Civics

Some questions on the citizenship test relate to the application process and concepts of citizenship itself:

Q: What is one promise you make when you become a United States citizen?

A: Give up loyalty to other countries; defend the Constitution and laws of the United States; obey the laws of the United States; serve in the U.S. military (if needed); serve (do important work for) the nation (if needed); be loyal to the United States.

Q: What are two ways that Americans can participate in their democracy?

A: Vote; join a political party; help with a campaign; join a civic group; join a community group; give an elected official your opinion on an issue; call Senators and Representatives; publicly support or oppose an issue or policy; run for office; write to a newspaper. (Any two.)

Q: What is the "rule of law"?

A: Everyone must follow the law; leaders must obey the law; government must obey the law; no one is above the law.

Q: Name one right only for United States citizens.

A: Vote in a federal election; run for federal office.

Frequently Asked Questions

How long does the N-400 naturalization process take?: The total time from filing Form N-400 to taking the Oath of Allegiance varies significantly by USCIS field office and current processing volumes. Typical timelines have ranged from about 6-8 months in faster offices to 18-24 months or more in slower ones. The biometrics appointment is often scheduled relatively early in the process, but timing varies by USCIS workload and whether USCIS reuses prior biometrics. USCIS publishes processing time estimates at egov.uscis.gov/processing-times — check for current estimates for your specific field office. Once your interview is approved, the Oath Ceremony is typically scheduled within 1-3 months.
How much does it cost to apply for U.S. citizenship?: As of the current USCIS fee schedule, N-400 fees vary by filing method and fee-reduction/waiver eligibility, and include both the application fee and the biometrics fee. Some applicants qualify for fee waivers (using Form I-912) if their household income is at or below 150% of the Federal Poverty Guidelines, or for reduced fees if their household income is between 150% and 200% of the Federal Poverty Guidelines. Verify the exact current amount using the USCIS Fee Calculator at uscis.gov before submitting — using outdated fee information can result in your application being rejected. Beyond the filing fee, applicants should budget for any necessary attorney fees, document copying, translations, and certified copies of court records (if applicable).
How long do you need to be a Green Card holder before applying for citizenship?: Most applicants need to be a lawful permanent resident (Green Card holder) for at least 5 years before applying for U.S. citizenship. There is a 3-year exception for applicants who have been married to and living with the same U.S. citizen spouse for the past 3 years (and the spouse must have been a U.S. citizen for those 3 years). Some shorter periods apply in special situations including certain military service members. Time spent outside the U.S. for extended periods can break "continuous residence" and effectively reset the clock. You can technically file Form N-400 up to 90 days before reaching the 5-year (or 3-year) anniversary of becoming a permanent resident, but you must still satisfy continuous residence and physical presence requirements as of the date you naturalize.
What happens at the citizenship interview?: The citizenship interview includes three main components conducted by a USCIS officer. First, English language tests: you must read aloud one of three sentences correctly, write one of three sentences correctly, and demonstrate the ability to speak and understand English through your conversation with the officer. Second, the civics test — and which version you take depends on your Form N-400 filing date. Applicants who filed before October 20, 2025 take the 2008 test: up to 10 questions from a list of 100, with 6 correct required to pass. Applicants who filed on or after October 20, 2025 take the 2025 test: up to 20 questions from a list of 128, with 12 correct required to pass (test ends early at 9 wrong). Third, the application review: the officer will go through your N-400 application asking detailed questions about your background, trips, moral character, and willingness to take the Oath of Allegiance. The total interview typically takes 30-60 minutes. At the end, the officer usually gives you Form N-652 indicating whether you passed, your case was continued for follow-up, or your application was denied.
What is the Oath of Allegiance?: The Oath of Allegiance is the formal pledge of loyalty to the United States that every new naturalized U.S. citizen takes at the naturalization ceremony. The oath includes promises to support the Constitution and laws of the United States, renounce allegiance to other countries, defend the Constitution against all enemies, perform military service or civilian work for the United States when required by law, and bear true faith and allegiance to the U.S. The oath is taken aloud, usually with hundreds of other new citizens at a group ceremony. Once you take the oath, you officially become a U.S. citizen — that moment is when your citizenship begins. After the ceremony, you receive your Certificate of Naturalization, which is your official document proving U.S. citizenship.
Can you fail the citizenship test?: Yes. If you fail the English language tests or the civics test at your initial interview, USCIS typically gives you a second chance — you'll be scheduled for a re-examination within 60-90 days, where you'll only be retested on the parts you failed (not your entire application). If you fail the second time as well, your N-400 application will likely be denied. You can then either appeal the denial (using Form N-336) or refile a new N-400 application after addressing the issues. The most common reason for failing is inadequate preparation for the civics test or English language tests. The civics test material is publicly available — study guides, flashcards, and practice tests are widely available, including from USCIS itself. Preparation substantially improves your chances of passing on the first try.

Bottom Line

The N-400 naturalization process has clear stages: eligibility check → file Form N-400 → biometrics → interview (with English and civics tests) → Oath of Allegiance ceremony. Most applicants need 5 years as a Green Card holder (or 3 years if married to a U.S. citizen), continuous residence, physical presence, good moral character, and ability to read, write, speak, and understand English. Which civics test you take depends on your filing date: applicants who filed before October 20, 2025 take the 2008 test (up to 10 of 100 questions, 6 correct to pass); applicants who filed on or after October 20, 2025 take the 2025 test (up to 20 of 128 questions, 12 correct to pass). Total processing time typically ranges from several months to over a year. The biggest pitfalls are: filing before fully eligible, not disclosing past issues, breaking continuous residence with long trips abroad, and inadequate preparation for the civics and English tests. Always verify current fees, processing times, and form versions at uscis.gov before filing — these change periodically. With proper preparation and honest disclosure, the vast majority of applicants successfully naturalize. For more citizenship preparation topics, see our guides on the branches of government explained, the Bill of Rights — 10 amendments, the U.S. Constitution citizenship test guide, and the complete citizenship exam pass rate guide.

Source: USCIS — Form N-400 · USCIS — Citizenship Resource Center · USCIS — Study for the Test