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US Citizenship Application Form (N-400) – Fillable PDF

  1. Keel Inglise
  2. Riik USA
  3. Tegevus Immigratsioon
  4. osakond USCIS
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US Citizenship Application Form (N-400) – Fillable PDF

The N-400 is the official United States Citizenship and Immigration Services (USCIS) form used to apply for naturalization. By using Formize’s fillable PDF, you can complete the entire application directly in your browser—no extra software required.

Our online PDF filler automatically saves your entries, validates required fields, and lets you download a clean, printable version ready for submission. This saves time, reduces errors, and helps you meet USCIS filing standards.

Below you’ll find everything you need to know about the N-400 form, from eligibility requirements to step‑by‑step instructions for a flawless submission.

What Is the N-400 Naturalization Form?

The N-400 collects personal information, residency history, employment details, and background data required by USCIS to determine if you qualify for U.S. citizenship. It replaces the older paper‑only process, and the PDF version is fully fillable when opened with a PDF reader or an online filler like Formize.

How to Complete the Fillable N-400 Online

Follow the simple steps in the “How‑To” section below. The process takes about 30‑45 minutes if you have all documents on hand.

Common Mistakes to Avoid on Your Citizenship Application

  • Leaving required fields blank – Formize will highlight missing answers before you can download.
  • Using the wrong edition of the form – always use the latest PDF (linked on this page).
  • Submitting original documents unless specifically requested – attach only copies and translations.
  • Incorrect date formats – USCIS requires MM/DD/YYYY.

Where to Submit Your Completed N-400

After you download the completed PDF, you can either file it online through your USCIS account or mail it to the correct USCIS Direct Filing Address for your state. The address list is available on the USCIS website.

Eligibility Checklist for Naturalization

  • Be a lawful permanent resident for at least 5 years (or 3 years if married to a U.S. citizen).
  • Maintain continuous residence and physical presence in the U.S.
  • Demonstrate good moral character.
  • Pass English and civics tests (or qualify for an exemption).

Having this checklist handy while you fill out the N-400 will ensure you provide all required information the first time.

KKK
  • Is the N-400 form free to download?

    Yes, the official N-400 PDF is provided by USCIS at no cost. Formize offers a free online filler for completing the form.

  • Can I edit the N-400 after I download it?

    With Formize you can edit the form as many times as needed before downloading the final version. Once you download, you can still reopen it in any PDF editor.

  • Do I need a digital signature?

    USCIS currently requires a hand‑signed signature on the printed form. After filling it online, print the PDF, sign it, and then mail or scan it for online filing.

  • What if I make a mistake after mailing the N-400?

    You can submit a corrected N-400 with a cover letter explaining the error, or you may be asked to provide an amendment during the interview.

  • How long does the naturalization process take after I submit the N-400?

    Processing times vary by field office, but most applicants receive a decision within 8‑12 months after filing.

  • Do I need to attach supporting documents to the PDF?

    USCIS requires copies of certain documents (e.g., Green Card, marriage certificate). Attach them to the printed application or upload them with your online filing.

  • Can I apply for a fee waiver with the online form?

    Fee waiver requests cannot be filed online. You must submit a paper N-400 with Form I-912 and supporting evidence.

  • Is the Formize filler secure?

    Yes. All data is processed locally in your browser and is not stored on our servers, ensuring your personal information remains private.

KUIDAS

4 lihtsa sammuga veebis tasuta N-400 täitmine:

  1. 1
    Open the Fillable Form
    Click the “Fill out this form” button on the page. The Formize PDF Filler app will load instantly in your browser.
  2. 2
    Enter Your Information
    Type directly into each field. Required fields are marked with an asterisk and will be highlighted if left empty.
  3. 3
    Validate and Save
    When you finish, click “Validate” to let Formize check for missing or inconsistent entries, then save the completed PDF to your device.
  4. 4
    Submit to USCIS
    Upload the saved PDF to your USCIS online account or print it for mailing to the appropriate USCIS filing address.
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