Application for Naturalization - Form N-400 - Part 1 and Part 2 Instructions

Sep 19, 2026

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Application form for naturalization by U.S. Citizenship and Immigration Services (USCIS). Provides a structured process to select the reason for filing under specific eligibility provisions, including general provisions, marriage-based eligibility, VAWA, military-related eligibility, and other reasons. Collects applicant identity details such as A-Number, current legal name, other names used since birth, optional legal name change, sex, date of birth, lawful permanent resident status date, birth country, citizenship or nationality, and eligibility questions affecting naturalization processing.

LanguageEnglish

CategoryForms

FormatPDF

Pages14

Reading Time5 min

AccessFree to download

Application for Naturalization

For USCIS Use Only

Part 1. Information About Your Eligibility

1. Reason for Filing

Part 2. Information About You (Person applying for naturalization)

1. Your Current Legal Name

2. Other Names You Have Used Since Birth

3. Would you like to legally change your name?

4. USCIS Online Account Number

5. Sex

6. Date of Birth

7. Lawful permanent resident date

8. Country of Birth

9. Country of Citizenship or Nationality

10. Parent U.S. citizenship before age 18

11. Disability or mental impairment exceptions

12.a–12.c. Social Security update and consent

Part 3. Biographic Information

# Application for Naturalization Department of Homeland Security U.S.Citizenship and Immigration Services | For
USCIS
Use
Only | Date Stamp | Receipt | Action Block | | --- | --- | --- | --- | | Remarks | | | | ▶ STARTHERE-Type or print in black ink.If you do not answer all of the questions,it may take longer for U.S.Citizenship and Immigration Services(USCIS)to process your Form N-400. If your mother or father (including legal adoptive mother or father)is a U.S.citizen by birth,or was naturalized before you reachedyour 18th birthday,you may not need to file Form N-400 as you may already be a U.S.citizen.Before you file this application,pleasevisit the USCIS website at www.uscis.gov/N-600 for Form N-600,Application for Certificate of Citizenship. Enter Your 9 Digit A-Number: Part 1.Information About Your Eligibility(Select only one box to identifythe basis of your eligibility or your Form N-400 may be delayed or rejected.) ## 1. Reason for Filing(Please see Instructions for eligibility requirements under each provision.): A. □General Provision.See Instructions:List of General Eligibility Requirements B. □Spouse of U.S.Citizen.See Instructions:Eligibility Based on Marriage to a U.S.Citizen C. □VAWA.See Instructions:Eligibility for the Spouse,Former Spouse,or Child of a U.S.Citizen under the ViolenceAgainst Women Act(VAWA) D. □ Spouse of U.S.Citizen in Qualified Employment Outside the United States.See Instructions:Eligibility for theSpouse of a U.S.Citizen Working for a Qualified Employer Outside the United States If your residential address is outside the United States and you are filing under Immigration and Nationality Act(INA)section 319(b),select the USCIS field office where you would like to have your naturalization interview.Youcan find a USCIS field office at www.uscis.gov/field-offices. E. □ Military Service During Period of Hostilities.See Instructions:Eligibility and Evidence for Current and FormerMembers of the U.S.Armed Forces F. At Least One Year of Honorable Military Service at Any Time.See Instructions:Eligibility and Evidence forCurrent and Former Members of the U.S.Armed Forces G. □Other Reason for Filing Not Listed Above Part 2.Information About You (Person applying for naturalization) 1. Your Current Legal Name(do not provide a nickname) Family Name(Last Name) Given Name(First Name) Middle Name(if applicable) 2.Other Names You Have Used Since Birth (see the Instructions for this Item Number for more information about which namesto include) Given Name(First Name) Family Name (Last Name) Middle Name (if applicable) Part 2.Information About You(Person applying for naturalization)(continued)A- Name Change(Optional) Read the Instructions for this Item Number before you decide whether you would like to legally change your name. 3. Would you like to legally change your name? 口Yes□No(skip to Item Number 4.) If you answered "Yes,"type or print the new name you would like to use: Family Name (Last Name) Given Name(First Name)Middle Name (if applicable) 4. USCIS Online Account Number(if any) 5. Sex □Male □Female 6. Date of Birth (mm/dd/yyyy) In addition to your actual date of birth,include any other dates of birth you have ever used,including dates used in connectionwith any legal names or non-legal names,in the space provided in Part 14.Additional Information. 7. If you are a lawful permanent resident,provide the date you became a lawful permanent resident(mm/dd/yyyy). 8. Country of Birth 9.Country of Citizenship or Nationality If you are a citizen or national of more than one country,list additional countries of nationality in the space provided in Part 14.Additional Information. 10.Was your mother or father (including adoptive mother or father)a U.S.citizen before your 18th birthday? □Yes □ NoIf you answe

FAQs

What is Form N-400 used for?

Form N-400 is the application for naturalization with USCIS. It collects eligibility basis and personal information needed for processing and background checks.

How should you choose the reason for filing in Part 1?

Select only one box that matches your eligibility basis, such as general provisions, spouse of a U.S. citizen, VAWA, qualifying employment outside the U.S., military service, or another listed reason.

What information is requested about the applicant in Part 2?

Part 2 requests the applicant’s 9-digit A-Number, current legal name, other names used since birth, whether they want a legal name change, sex, date of birth, lawful permanent resident date (if applicable), birth country, and citizenship or nationality, plus specific eligibility questions.

Sep 19, 2026

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