Do I need Adobe Acrobat to fill out Form N‑400?

No. With Formize’s online filler you can complete the form in any modern browser—no Adobe Acrobat or other PDF editor is required.

Is the fillable PDF the official USCIS version?

Yes. The PDF linked on this page is the exact file published by USCIS, ensuring your application meets the agency’s formatting standards.

Can I save my work and return later?

Absolutely. The Formize app lets you save a draft locally or export a partially completed PDF, so you can continue whenever you’re ready.

What if I make a mistake after exporting?

You can open the exported PDF in any PDF editor to correct small errors, or simply re‑fill the form using the online filler and export a new version.

How do I submit the completed N‑400?

Print the filled PDF and mail it to the USCIS Lockbox address indicated in the form instructions, or upload the digital copy through the myUSCIS portal.

Is there a filing fee for the N‑400?

Yes. As of the latest USCIS guidelines, the filing fee is $725 (including the biometrics fee). Check the USCIS website for current amounts.

Can I use this form if I’m applying for citizenship outside the United States?

Form N‑400 is intended for lawful permanent residents applying from within the U.S. If you are abroad, you must follow the consular processing instructions on the USCIS site.

What documents must I attach to the N‑400?

A copy of your green card, two passport‑style photos, tax transcripts, proof of residence, and any documents related to criminal history or military service, if applicable.

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

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

Applying for United States citizenship is a major step, and the official Form N‑400, Application for Naturalization is the gateway. With Formize’s fillable PDF you can complete the entire form directly in your browser—no extra software required.

Our online PDF filler loads the exact version of the USCIS N‑400 form, preserving the official layout while allowing you to type, select checkboxes, and attach digital signatures. When you’re ready, simply download the completed PDF and submit it to USCIS.

What Is Form N‑400?

Form N‑400 is the United States Citizenship and Immigration Services (USCIS) document used by permanent residents to apply for naturalization. The form collects personal information, residency history, employment details, and answers to eligibility questions.

Key Sections & Required Documents

Personal Information: name, address, Social Security number, and contact details.
Residence & Employment History: dates and locations for the past five years.
Eligibility Questions: criminal background, tax obligations, and military service.
Supporting Documents: copy of your green card, passport‑style photos, tax transcripts, and proof of continuous residence.

How to Fill Out the Form Online

Instead of downloading the PDF and opening it in a separate editor, simply click the "Fill out this form" button on this page. The Formize PDF Filler app will load automatically. Follow the on‑screen prompts, save your progress, and export the finished document when you’re done.

Common Mistakes to Avoid

Leaving any required field blank—USCIS will reject incomplete applications.
Providing outdated addresses or employment dates.
Forgetting to sign and date the form electronically.
Submitting the wrong version of the N‑400 (always use the latest PDF from USCIS).

Where to Submit Your Application

After completing the form, print the PDF (or keep the digital copy) and mail it to the USCIS Lockbox address listed in the USCIS filing instructions. You can also submit the form online through the USCIS myUSCIS portal if you prefer a fully electronic filing process.

Need help? Review the USCIS official instructions for detailed guidance on each section.

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PREGUNTAS MÁS FRECUENTES

Do I need Adobe Acrobat to fill out Form N‑400?
No. With Formize’s online filler you can complete the form in any modern browser—no Adobe Acrobat or other PDF editor is required.
Is the fillable PDF the official USCIS version?
Yes. The PDF linked on this page is the exact file published by USCIS, ensuring your application meets the agency’s formatting standards.
Can I save my work and return later?
Absolutely. The Formize app lets you save a draft locally or export a partially completed PDF, so you can continue whenever you’re ready.
What if I make a mistake after exporting?
You can open the exported PDF in any PDF editor to correct small errors, or simply re‑fill the form using the online filler and export a new version.
How do I submit the completed N‑400?
Print the filled PDF and mail it to the USCIS Lockbox address indicated in the form instructions, or upload the digital copy through the myUSCIS portal.
Is there a filing fee for the N‑400?
Yes. As of the latest USCIS guidelines, the filing fee is $725 (including the biometrics fee). Check the USCIS website for current amounts.
Can I use this form if I’m applying for citizenship outside the United States?
Form N‑400 is intended for lawful permanent residents applying from within the U.S. If you are abroad, you must follow the consular processing instructions on the USCIS site.
What documents must I attach to the N‑400?
A copy of your green card, two passport‑style photos, tax transcripts, proof of residence, and any documents related to criminal history or military service, if applicable.

CÓMO

Cómo completar N-400 fillable PDF gratis, en línea en 4 sencillos pasos:

1
Click the Fill‑out Button
Press the “Fill out this form” button on this page. The Formize PDF Filler will open in a new tab.
2
Enter Your Information
Type directly into each field, select checkboxes, and upload supporting documents as prompted.
3
Save Your Progress
Use the “Save” option to store a copy in your browser or download a draft PDF at any time.
4
Finalize & Export
When all sections are complete, click “Export” to download the finished N‑400 PDF ready for submission.

SOBRE

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