USCIS · Official form

Form N-400, Application for Naturalization

Form N-400 is the citizenship application: eligibility, residence and travel history, moral character, and the commitments of the oath, ending in the naturalization interview and civics test.

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What is N-400?

Form N-400 applies for naturalization. The standard path requires five years as a permanent resident (three when married to and living with a US citizen), physical presence for half that period, continuous residence, good moral character, and passing the English and civics tests at interview. The long questionnaire on arrests, taxes, affiliations, and travel exists because each answer maps to a legal eligibility requirement.

Applicants may file up to 90 days before reaching the residence requirement. After filing come biometrics, the interview, and the oath ceremony where citizenship actually begins.

Who files N-400?

Permanent residents of five years or more
Spouses of US citizens after three years of residence and marriage
Applicants with qualifying US military service, under special provisions
Long-term residents 50 or over may qualify for English test exemptions noted on the form

How to fill out N-400

Confirm your eligibility basis in Part 1 and count your dates carefully.
Complete residence, employment, and trip history for the statutory period, listing every absence.
Answer every moral character and security question truthfully; explain any yes answers with evidence.
Download, sign, and file by mail or online with the current fee from uscis.gov, then prepare for the interview and civics test.

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Page 1 17 fields

Part 1. Information About Your Eligibility (Select only one box or your Form N-400 may be delayed or rejected.). 1. C. Select VAWA. See

Part 1. Information About Your Eligibility (Select only one box or your Form N-400 may be delayed or rejected.). 1. B. Select Spouse of

Part 1. Information About Your Eligibility (Select only one box or your Form N-400 may be delayed or rejected.). 1. A. Select General

Part 1. Information About Your Eligibility. Enter Your 9 Digit Alien Registration Number (A. Number).

Part 1. Information About Your Eligibility (Select only one box or your Form N-400 may be delayed or rejected.). 1. E. Select Military

Part 1. Information About Your Eligibility (Select only one box or your Form N-400 may be delayed or rejected.). 1. F. Select At Least One

Part 1. Information About Your Eligibility (Select only one box or your Form N-400 may be delayed or rejected.). 1. G. Select Other Reason

Part 1. Information About Your Eligibility (Select only one box or your Form N-400 may be delayed or rejected.). 1. D. Select Spouse of

Part 2. Information About You (Person applying for naturalization). 1. Your Current Legal Name (do not provide a nickname). Enter Middle

Part 2. Information About You (Person applying for naturalization). 1. Your Current Legal Name (do not provide a nickname). Enter Given

Part 2. Information About You (Person applying for naturalization). 1. Your Current Legal Name (do not provide a nickname). Enter Family

Part 2. Information About You (Person applying for naturalization). 2. Other Names You Have Used Since Birth (see the Instructions for this

Page 2 18 fields

Page 3 65 fields

Page 4 29 fields

Page 5 45 fields

Part 7. Information About Your Marital History. Your Current Marriage. 6. Enter Current Spouse's Alien Registration Number (A. Number), if

Part 7. Information About Your Marital History. Your Current Marriage. 7. How many times has your current spouse been married? (See the

Part 7. Information About Your Marital History. Your Current Marriage. 8. Enter Current Spouse's Current Employer or Company

Part 8. Information About Your Children. 1. Indicate your total number of children. Enter Total Number of Children.

Part 6. Information About Your Children . Provide the following information about your children listed in Item Number 1. For the residence

Part 6. Information About Your Children. 2. Provide the following information about your children listed in Item Number 1. For the

Part 5. Information About Your Employment and Schools You Attended. Employer Name or School Name. Line 1. Enter Name.

Part 5. Information About Your Employment and Schools You Attended. Employer Name or School Name. Line 2. Enter Name.

Part 5. Information About Your Employment and Schools You Attended. Employer Name or School Name. Line 3. Enter Name.

Part 5. Information About Your Employment and Schools You Attended. Line 3. Enter Employer's City (if outside the United States, indicate

Part 5. Information About Your Employment and Schools You Attended. Line 2. Enter Employer's City (if outside the United States, indicate

Part 5. Information About Your Employment and Schools You Attended. Line 1. Enter Employer's City (if outside the United States, indicate

Part 5. Information About Your Employment and Schools You Attended. Employment Dates. Line 1. Enter From Date. Enter as 2-digit Month,

Part 5. Information About Your Employment and Schools You Attended. Employment Dates. Line 2. Enter From Date. Enter as 2-digit Month,

Part 5. Information About Your Employment and Schools You Attended. Employment Dates. Line 3. Enter From Date. Enter as 2-digit Month,

Part 5. Information About Your Employment and Schools You Attended. Employment Dates. Line 2. Enter To Date. Enter as 2-digit Month,

Part 5. Information About Your Employment and Schools You Attended. Employment Dates. Line 3. Enter To Date. Enter as 2-digit Month,

Part 5. Information About Your Employment and Schools You Attended. Line 1. Enter Occupation or Field of Study.

Part 5. Information About Your Employment and Schools You Attended. Line 2. Enter Occupation or Field of Study.

Part 5. Information About Your Employment and Schools You Attended. Line 3. Enter Occupation or Field of Study.

Part 5. Information About Your Employment and Schools You Attended. Line 1. Enter Employer' State (if outside the United States, indicate

Part 5. Information About Your Employment and Schools You Attended. Line 2. Enter Employer's State (if outside the United States, indicate

Part 5. Information About Your Employment and Schools You Attended. Line 3. Enter Employer's State (if outside the United States, indicate

Part 5. Information About Your Employment and Schools You Attended. Line 1. Enter Employer's Zip Code (if outside the United States,

Part 5. Information About Your Employment and Schools You Attended. Line 2. Enter Employer's Zip Code (if outside the United States,

Part 5. Information About Your Employment and Schools You Attended. Line 3. Enter Employer's Zip Code (if outside the United States,

Country

Page 6 30 fields

Page 7 40 fields

Page 8 36 fields

Part 9. Additional Information About You. Have you EVER ordered, incited, called for, committed, assisted, helped with, or otherwise

Part 9. Additional Information About You. If you answer “Yes” to any part of Item Number 15. below, complete the table below with each

Part 9. Additional Information About You. 29. If you answer “Yes” to any part of Item Number 15. below, complete the table below with each

Part 9. Additional Information About You. If you answer “Yes” to any part of Item Number 15. below, complete the table below with each

Part 9. Additional Information About You. 29. If you answer “Yes” to any part of Item Number 15. below, complete the table below with each

Part 9. Additional Information About You. If you answer “Yes” to any part of Item Number 15. below, complete the table below with each

Part 9. Additional Information About You. 29. If you answer “Yes” to any part of Item Number 15. below, complete the table below with each

Part 9. Additional Information About You. If you answer “Yes” to any part of Item Number 15. below, complete the table below with each

Part 9. Additional Information About You. Have you EVER ordered, incited, called for, committed, assisted, helped with, or otherwise

Page 9 36 fields

Page 10 32 fields

Page 11 12 fields

Part 10. Applicant's Contact Information, Certification, and Signature. Applicant's Certification and Signature. 4. Enter Date of

Part 10. Applicant's Contact Information, Certification, and Signature. Applicant's Contact Information. 3. Enter Applicant's Email Address

Part 10. Applicant's Contact Information, Certification, and Signature. Applicant's Contact Information. 1. Enter Applicant's Daytime

Part 10. Applicant's Contact Information, Certification, and Signature. Applicant's Contact Information. 2. Enter Applicant's Mobile

Part 8. Information About Your Children. 1. Indicate your total number of children. Enter Total Number of Children.

Part 7. Information About Your Marital History. Your Current Marriage. 4. D. Is your current spouse's present physical address the same as

Part 7. Information About Your Marital History. Your Current Marriage. 4.D. Is your current spouse's present physical address the same as

Part 8. Information About Your Children. 1. Indicate your total number of children. Enter Total Number of Children.

Part 9. Additional Information About You. If you answer “Yes” to Item Numbers 20. - 21. below, provide an explanation in the space provided

Page 12 15 fields

Part 11. Additional Information.. Interpreter's Contact Information, Certification, and Signature. Provide the following information about

Part 11. Additional Information.. Interpreter's Contact Information, Certification, and Signature. Interpreter's Contact Information. 5.

Part 11. Additional Information.. Interpreter's Contact Information, Certification, and Signature. Interpreter's Contact Information. 3.

Part 11. Additional Information.. Interpreter's Contact Information, Certification, and Signature. Interpreter's Contact Information. 4.

Part 14. Additional Information.. Interpreter's Contact Information, Certification, and Signature. Interpreter's Certification and

Part 12. Contact Information, Declaration, and Signature of the Person Preparing This Application, if Other Than the Applicant. Provide the

Part 12. Contact Information, Declaration, and Signature of the Person Preparing This Application, if Other Than the Applicant. Preparer's

Page 13 16 fields

Part 14. Additional Information. 5. Enter Additional Information.

Part 14. Additional Information. 6. Enter Page Number.

Part 14. Additional Information. 6. Enter Part Number.

Part 14. Additional Information. 6. Enter Item Number.

Part 14. Additional Information. 6. Enter Additional Information.

Part 14. Additional Information. 5.Enter Item Number.

Part 14. Additional Information. 5. Enter Part Number.

Part 14. Additional Information. 5. Enter Page Number.

Part 14. Additional Information. 3. Enter Page Number.

Part 14. Additional Information. 3. Enter Part Number.

Part 14. Additional Information. 3.Enter Item Number.

Part 14. Additional Information. 3. Enter Additional Information.

Part 14. Additional Information. 4. Enter Page Number.

Part 14. Additional Information. 4. Enter Part Number.

Part 14. Additional Information. 4. Enter Item Number.

Part 14. Additional Information. 4. Enter Additional Information.

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Frequently asked questions

Which trips break continuous residence?

Absences over six months raise a presumption of broken residence; over a year generally breaks it outright without an approved reentry permit and even then presence requirements still apply.

What is on the civics test?

Up to ten questions drawn from the published list of 100 on US government and history; six correct answers pass. Study materials are free at uscis.gov.

Form N-400, Application for Naturalization

What is N-400?

Who files N-400?

How to fill out N-400

Quick fill N-400 on this page

Frequently asked questions

Related forms

Form I-90, Application to Replace Permanent Resident Card

Form I-130, Petition for Alien Relative

Form AR-11, Alien’s Change of Address Card