Form N-400: Application for Naturalization
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Immigration practice or citizenship clinic preparing the 14-page USCIS Form N-400 (589 fields, Edition 01/20/25) alongside Form G-28, Form I-912, and Form G-1145? Eliminate Mac Preview XFA blank-field corruption and pre-fill 5-year residence, employment, and travel histories from Excel/CSV.
JustFill helps you fill out Form N-400 — it does NOT grant citizenship or file your application with USCIS. You submit the completed form to USCIS yourself.JustFill is not affiliated with USCIS. This is an independent third-party tool to help you complete Form N-400. Always download the current blank form from the official source and verify your completed copy before signing or submitting. Official Form N-400 from USCIS
USCIS Form N-400, Application for Naturalization (14 pages, 440 fields, Edition 01/20/25, OMB No. 1615-0052), is the application a lawful permanent resident (green card holder) files to become a U.S. citizen. It covers your Part 1 eligibility category (most commonly 5 years as a permanent resident under INA 316(a) or 3 years married to and living with a U.S. citizen under INA 319(a)), 5-year address and employment history, every international trip of 24+ hours, marital and children details, Part 9 moral character questions, and the Part 10 fee-reduction request. Click "Fill the blank Form N-400 now" or upload n-400.pdf in JustFill to complete all 14 pages without Mac Preview XFA blank-field bugs.
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Form N-400 is the 14-page USCIS application for U.S. citizenship through naturalization. The current Edition 01/20/25 consolidates the streamlined 14-page layout containing 237 text fields, 198 checkboxes, and 5 dropdowns — including an integrated Social Security Administration enumeration/status-update election in Part 2 and an integrated Reduced Fee request in Part 10 for applicants whose household income is between 150% and 400% of the Federal Poverty Guidelines. Because USCIS publishes n-400.pdf as an owner-encrypted Adobe LiveCycle Designer 6.5 XFA hybrid PDF, green card holders who fill the 14 pages in Apple macOS Preview or Safari routinely send their immigration paralegal or attorney a PDF that opens completely blank in Adobe Acrobat. JustFill eliminates that XFA hybrid corruption so applicants, citizenship clinics, and immigration law firms can fill and review all 14 pages in any browser.
USCIS exports the 14-page Form N-400 (Application for Naturalization, Edition 01/20/25, 589 fields) from Adobe LiveCycle Designer 6.5 as an owner-encrypted XFA hybrid PDF. When green card holders or citizenship clinic volunteers fill out n-400.pdf in Apple macOS Preview or Safari and save the file, Preview writes only to the flat AcroForm appearance stream without updating the underlying XFA XML dataset — causing all 589 fields (including 5-year residence, employment, and international travel tables) to open completely blank in Adobe Acrobat.
JustFill prevents Mac Preview XFA data loss: click "Fill the blank Form N-400 now" to open an interactive naturalization worksheet in your browser, upload your 14-page USCIS N-400 PDF to export a flattened, print-ready copy, or batch-populate citizenship clinic packets alongside Form G-28, Form G-1145, and Form DS-82 / SS-5 post-naturalization updates.
Related USCIS & B2B Compliance Forms
The official 14-page Form N-400 PDF (Edition 01/20/25, 440 fields) is free to download from USCIS at uscis.gov/n-400. Because USCIS distributes n-400.pdf as an owner-encrypted Adobe LiveCycle XFA hybrid form that loses typed data in macOS Preview, click "Fill the blank Form N-400 now" above to open a clean interactive worksheet in JustFill, or upload your 14-page USCIS N-400 PDF to complete every section in your browser and download a flattened, print-ready PDF.
What each section of Form N-400 asks for. JustFill’s AI will detect these fields automatically when you upload the PDF — review the breakdown below so you know what to enter.
Selects the single statutory basis for naturalization: 5-year LPR (1.a), 3-year LPR married to and living with a U.S. citizen (1.b), VAWA 3-year LPR (1.c), spouse of U.S. citizen in qualified employment abroad (1.d), military service during peacetime (1.e) or hostilities (1.f), or other basis (1.g).
Full legal name, other names used, optional judicial name-change request at naturalization oath (Item 3), USCIS Online Account Number, Sex, Date of Birth, date you became an LPR (matching your Form I-551 green card "Resident Since" date), country of birth and citizenship, Disability Exception (Form N-648) or English language 50/20 or 55/15 exemptions, SSA enumeration/citizenship update election, and Part 3 ethnicity/race/height/weight/eye/hair color.
Physical and mailing addresses for the past 5 years (or 3 years under the spouse category), current marital status, current spouse's citizenship/immigration details, total number of prior marriages for both you and your spouse (Part 5), and every biological, adopted, or stepchild under 18 (Part 6).
Employers and schools attended during the last 5 years (including self-employment, homemaker, retired, or unemployed periods), followed by Part 8 listing every trip of 24 hours or more outside the United States during the statutory 5-year or 3-year period (departure date, return date, and countries visited).
Comprehensive Yes/No eligibility, national security, tax compliance, Selective Service registration (males aged 18–26), criminal/arrest/citation history (Items 15.a–15.b), and Oath of Allegiance willingness questions.
Part 10 Reduced Fee request for household income at or below 400% of the Federal Poverty Guidelines, Part 11 Applicant's signature in black ink, Part 12 Interpreter certification, Part 13 Attorney/Representative Preparer block (paired with Form G-28), and Part 14 Additional Information continuation sheet (leave Parts 15 and 16 blank until your in-person USCIS interview).
A fictional lawful permanent resident in Chicago who has held her green card for more than 5 years prepares Form N-400 to apply for U.S. citizenship, reporting two short international trips, continuous employment, and requesting an automatic Social Security citizenship status update in Part 2. All names and numbers are fictional.
Part 1, Item 1.a checked — General Provision (LPR for at least 5 years) · Name: SAMPLE, PRIYA MEHTA · A-Number: A-•••-•••-418 · Date Became LPR: 05/14/2020 · SSA Update (Item 12): ☑ Yes
Qualifies under the 5-year permanent resident rule (INA 316(a)) and authorizes USCIS/SSA to update citizenship status upon naturalization.
Address: 740 Sample Grove Ave, Apt 4B, Chicago, IL 60614 (05/2021 to PRESENT) · Prior: 210 Sample Oak St, Evanston, IL 60201 (05/2019 to 05/2021) · Employer: Sample Midwest Analytics LLC, Chicago, IL (06/2020 to PRESENT)
Covers a full 5 years of physical residence and employment with zero unexplained chronological gaps.
Trip 1: Left 11/18/2024, Returned 12/02/2024 (Countries: India — 13 days) · Trip 2: Left 07/10/2023, Returned 07/19/2023 (Countries: Canada — 8 days)
Lists trips in reverse chronological order; both are well under the 180-day continuous-residence threshold.
All Part 9 admissibility & tax compliance questions answered · Oath of Allegiance Items 31–37: ☑ Yes · Part 11 signed in black ink by Priya M. Sample on 10/21/2026 (Parts 15–16 left blank for interview)
Part 11 must be signed before filing; Parts 15 and 16 are signed only before the USCIS officer at the naturalization interview.
These values are made up. They are here to show what belongs on each line, not to be copied — every name, number, and address on your own Form N-400 has to be your own.
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For immigration law firms, citizenship clinics, and naturalization paralegals
Lock your law firm or clinic Part 15 preparer block, import applicant biographic, green card, and 5-year timeline columns from Excel or CSV, or send a hosted Share & E-Sign link so Mac and iPhone clients never return a corrupted XFA hybrid PDF.
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Form I-90: Application to Replace Permanent Resident Card
Form I-765: Application for Employment Authorization
Form I-130: Petition for Alien Relative
Form I-485: Application to Register Permanent Residence or Adjust Status
Form I-131: Application for Travel Documents, Parole Documents, and Arrival/Departure Records
Form G-28, Notice of Entry of Appearance as Attorney or Accredited Representative
Form G-1145: E-Notification of Application/Petition Acceptance
Form DS-82: U.S. Passport Renewal Application for Eligible Individuals
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Official source: Form N-400 on USCIS’s website
Edition checked: 01/20/25 (14 pages, 440 fields — 237 text fields, 198 checkboxes, 5 dropdowns; OMB No. 1615-0052). Verified against the official source on · Verified in our Government Forms Fillability Study.
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