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Get the free USCIS Form N-400 Application for Naturalization

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What is Form N-400

The USCIS Form N-400 is a government document used by individuals to apply for U.S. citizenship through naturalization.

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Who needs Form N-400?

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Form N-400 is needed by:
  • Individuals seeking U.S. citizenship
  • Permanent residents applying for naturalization
  • Immigrants who meet eligibility requirements for citizenship
  • Students currently on non-immigrant visas
  • Spouses of U.S. citizens applying for citizenship
  • Refugees or asylees wanting to naturalize

How to fill out the Form N-400

  1. 1.
    Start by accessing the USCIS Form N-400 on pdfFiller. You can find it by searching for 'N-400 application' or navigating directly to the document page.
  2. 2.
    Once opened, familiarize yourself with the layout of the form and the available tools pdfFiller offers, including fillable fields, checkboxes, and instruction notes.
  3. 3.
    Gather all necessary personal information, including your residency history, employment details, and any prior immigration documents. Ensure you have your Permanent Resident Card (Green Card) on hand.
  4. 4.
    Begin filling out the form by clicking on the text fields to input your information. Use the instructions provided on pdfFiller to understand what details are needed for each section.
  5. 5.
    Carefully complete each section of the form, making sure to select the appropriate options for your situation. Use checklist features to ensure you haven’t missed any critical information.
  6. 6.
    After filling the form, review all entries carefully for accuracy. Use the ‘preview’ option on pdfFiller to see how your completed form will look.
  7. 7.
    Finalize the form by saving your work on pdfFiller. You can choose to download the completed form in various formats if needed.
  8. 8.
    If submitting online, follow pdfFiller’s submission instructions carefully. If mailing, ensure you have the correct address for USCIS and include any required supporting documents.
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FAQs

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To be eligible for Form N-400, you must be a permanent resident for at least 5 years, or 3 years if you're married to a U.S. citizen. Additionally, you must meet the continuous residence and physical presence requirements.
Processing times for the N-400 application can vary based on the USCIS service center handling your case. Typically, it can take between 6 to 12 months to receive a decision on your application.
Along with Form N-400, you may need to submit copies of your Green Card, photographs, and any documents proving your residence, marriage to a U.S. citizen, or any name changes, if applicable.
You can submit Form N-400 online via the USCIS website or by mailing a printed version to the designated USCIS address. Ensure you check for the correct mailing address according to your state.
Common mistakes include leaving fields blank, providing incorrect information, or failing to sign the application. Double-check all information for accuracy before submission.
Yes, there is a filing fee for Form N-400. As of the latest updates, the fee is $725, which includes the cost of biometrics unless you qualify for a waiver.
After submission, USCIS will review your application. You will receive a notice for biometrics appointment, followed by an interview, where you must demonstrate your eligibility for citizenship.
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