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.
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.
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.
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.
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.
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.
Yes. The filler lets you save a draft to your device or to the cloud. Simply reopen the saved file in Formize to continue.
Filling out, saving, and downloading the PDF is completely free. Advanced features like secure cloud storage are optional.
Print a new copy, correct the error, and sign again. USCIS does not accept handwritten corrections on the electronic version.
Formize includes a built‑in signature tool. However, USCIS still requires a wet ink signature on the printed form before filing.
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.
Yes, if you have a USCIS online account. After completing the PDF, you can upload the signed scanned copy through the account portal.
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).
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