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N-400 Application for U.S. Citizenship – Fillable PDF

  1. Language English
  2. Country USA
  3. Activity Immigration
  4. Department USCIS
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N-400 Application for U.S. Citizenship – Fillable PDF

N-400 Application for U.S. Citizenship – Fillable PDF

Welcome to Formize.com – the fastest way to complete the USCIS N-400 Application for Naturalization without downloading a PDF editor. Our Fill out this form button opens the official N-400 PDF directly in the Formize PDF Filler, letting you type, save, and print your citizenship application in minutes.

What Is the N-400 Form?

The N-400 is the official United States Citizenship and Immigration Services (USCIS) form used by permanent residents to apply for naturalization. It collects personal information, residency history, employment details, and eligibility questions required for the citizenship interview.

How to Fill the N-400 Online with Formize

Our cloud‑based Formize PDF Filler turns the static PDF into a fully interactive, fillable document. Follow the simple steps below to complete your application without installing any software.

Common Mistakes to Avoid

  • Leaving required fields blank: The form will highlight missing information before you can save.
  • Mismatched dates: Ensure your residency and travel dates add up to the required continuous residence period.
  • Incorrect name format: Use the exact name as it appears on your Green Card and other legal documents.
  • Skipping the signature page: The PDF filler lets you add a digital signature; you must still sign the printed copy before filing.

Where to Submit Your Application

After completing the form, download the filled PDF, sign it on paper, and mail it to the USCIS lockbox address listed in the Instructions for Form N-400. You can also submit the form electronically through your USCIS online account if you prefer.

Need Help? Resources & Support

For detailed guidance, consult the official USCIS N-400 page. If you have questions about the fillable PDF process, our Help Center provides step‑by‑step tutorials.

FAQ
  • Do I need Adobe Acrobat to fill the N-400 form?

    No. Formize’s online PDF filler works in any modern browser, so you can complete the form without installing Adobe Acrobat or any other software.

  • Can I save my progress and finish later?

    Yes. The filler lets you save a draft to your device or to the cloud. Simply reopen the saved file in Formize to continue.

  • Is the Formize filler free for the N-400?

    Filling out, saving, and downloading the PDF is completely free. Advanced features like secure cloud storage are optional.

  • What if I make a mistake after I’ve downloaded the PDF?

    Print a new copy, correct the error, and sign again. USCIS does not accept handwritten corrections on the electronic version.

  • How do I add a digital signature?

    Formize includes a built‑in signature tool. However, USCIS still requires a wet ink signature on the printed form before filing.

  • Where can I find the filing fee amount?

    The current filing fee is listed on the USCIS N-400 webpage and in the PDF’s instruction sheet. Check the official site for the most up‑to‑date amount.

  • Can I submit the N-400 electronically?

    Yes, if you have a USCIS online account. After completing the PDF, you can upload the signed scanned copy through the account portal.

  • What documents must I attach to the N-400?

    You’ll need a copy of your Green Card, two passport‑style photos, and any supporting documents that prove eligibility (e.g., marriage certificate, tax returns).

HOW TO

How to fill out N-400 citizenship form for free, online in 5 easy steps:

  1. 1
    Open the Fillable Form
    Click the "Fill out this form" button on this page. The Formize PDF Filler app will load the official N-400 PDF directly in your browser.
  2. 2
    Enter Your Information
    Type into each field, select dates from the calendar widgets, and use drop‑down menus where provided. All required fields are highlighted.
  3. 3
    Save and Review
    Click "Save" to store a copy in your browser or download a draft. Review every section for completeness and accuracy.
  4. 4
    Print and Sign
    Download the completed PDF, print it, and add your handwritten signature on the signature page as required by USCIS.
  5. 5
    Submit to USCIS
    Mail the signed form with the required filing fee to the address listed in the USCIS instructions, or upload it through your USCIS online account.
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N-400 citizenship form template

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