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

  1. Language English
  2. Country USA
  3. Department USCIS
  4. Activity Citizenship
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US Citizenship Application (Form N-400) – Fillable PDF

Welcome to your one‑stop destination for the US citizenship application (Form N-400). This page provides the official fillable PDF, step‑by‑step instructions, and tips to ensure a smooth filing process.

What Is Form N-400?

Form N-400, Application for Naturalization, is the United States Citizenship and Immigration Services (USCIS) form used by permanent residents to apply for U.S. citizenship. The form collects personal information, residence history, employment, travel, and moral character details.

How to Fill Out the N-400 Online with Formize

Instead of downloading the PDF and opening a separate editor, simply click the "Fill out this form" button below. The Formize PDF Filler app will load directly in your browser, letting you complete every field online.

Common Mistakes to Avoid

  • Leaving sections blank: Even optional fields must be answered with "N/A" if they do not apply.
  • Mismatched dates: Ensure dates on the residency and travel sections are consistent with your passport.
  • Signature errors: Use the electronic signature tool; a handwritten signature on a printed copy will be rejected.
  • Incorrect filing fee: Verify the current fee on the USCIS website before submission.

Where to Submit Your Application

After completing the form, download the filled PDF and submit it through one of the following USCIS channels:

  • Online via USCIS myAccount
  • Mail to the address listed in the Form N-400 Instructions
  • In person at a USCIS Field Office (appointment required)

Need More Help?

Review the official USCIS instructions linked at the bottom of the form, and double‑check your answers before filing. If you have questions about eligibility, consider consulting an immigration attorney.

FAQ
  • Is the N-400 PDF on this page the official USCIS form?

    Yes. The PDF linked below is the exact, up‑to‑date version provided by USCIS, and it is fully fillable.

  • Do I need to print the form after filling it online?

    You can submit the completed PDF electronically through USCIS myAccount. If you prefer mailing, print the final PDF with your electronic signature.

  • How much is the filing fee for Form N-400?

    As of the latest update, the fee is $730 (including the biometrics fee). Check the USCIS website for the current amount before paying.

  • Can I edit the form after I download it?

    Yes, you can reopen the PDF in Formize’s filler or any compatible PDF editor to make changes before final submission.

  • What should I do if I make a mistake on the submitted form?

    If you discover an error after submission, file Form I-102 (Replacement for Lost, Stolen, or Damaged Form N‑400) or contact USCIS for guidance.

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

    Processing times vary by jurisdiction but typically range from 8 to 12 months. Check the USCIS Processing Times page for estimates.

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

    Yes. USCIS requires copies of your green card, photos, tax returns, and other evidence. Attach them when you upload or mail your application.

  • Is there a way to track my application status?

    Create a USCIS myAccount profile to track the status of your N‑400 online.

HOW TO

How to fill out N-400 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 open in a new tab.
  2. 2
    Complete Each Section
    Enter your information directly into the fields. Use the toolbar to add dates, checkboxes, and your electronic signature.
  3. 3
    Review for Errors
    When you finish, click "Review" to let the tool highlight any missing or inconsistent entries.
  4. 4
    Download the Completed PDF
    Save the filled form to your computer. The file is ready for upload to USCIS myAccount or for printing and mailing.
  5. 5
    Submit to USCIS
    Follow the submission instructions in the official USCIS guide—online, by mail, or in person.
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ABOUT

Citizenship Forms

N-400 form is one of Citizenship forms that are documents that are used to apply for citizenship in a country. The exact forms and requirements for citizenship vary by country, but generally, the process involves providing personal information and evidence of eligibility for citizenship.

In the United States, the most common citizenship form is the N-400 Application for Naturalization. This form is used by legal permanent residents (green card holders) to apply for U.S. citizenship. The form asks for personal information such as name, date of birth, and contact information, as well as information about the applicant's immigration status, criminal history, and other eligibility requirements.

Other countries may have different forms and requirements for citizenship, but the basic process typically involves providing information about the applicant's background and meeting certain eligibility criteria. This may include passing a citizenship test, demonstrating knowledge of the country's history and government, and demonstrating proficiency in the country's language.

It is important to note that the process of obtaining citizenship can be complex and time-consuming. It is recommended that individuals seeking citizenship consult with an immigration attorney or other qualified professional to help navigate the process and ensure that all necessary forms and requirements are met.

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