Do I need to print the N‑400 after filling it out online?

No. The Formize PDF Filler lets you complete, sign, and download the form electronically. You can submit the PDF online through your USCIS account or print it if you prefer a paper filing.

Is the PDF on this page the latest version?

Yes. The link points to the official USCIS file (n-400.pdf) which is updated whenever USCIS releases a new edition.

Can I save my progress and finish later?

Absolutely. The filler includes a “Save & Continue Later” button that creates a secure download of your partially completed form.

What if I make a mistake after I’ve signed?

You can use the “Undo” button to correct errors before signing. After signing, you’ll need to download a new copy, correct the mistake, and sign again.

How do I know which supporting documents to attach?

The N‑400 instructions (linked at the bottom of the PDF) list required documents such as a copy of your green card, marriage certificate, and tax returns. Attach PDFs in the order shown in the instructions.

Is there a fee for filing the N‑400?

Yes. As of 2024, the filing fee is $640 plus an $85 biometrics fee, payable to the U.S. Department of Homeland Security.

Can I submit the completed N‑400 through my USCIS online account?

Yes. After downloading the filled PDF, log in to your USCIS account, select “File a Form,” upload the PDF, and pay the fee securely.

What if I’m applying for citizenship based on marriage to a U.S. citizen?

You still use the standard N‑400, but you’ll need to include additional evidence of the marital relationship, such as a marriage certificate and proof of joint residence.

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

Processing times vary by field office, but most applicants receive a decision within 8‑12 months after the application is received.

Who can I contact if I have questions about the form?

For general inquiries, call the USCIS Contact Center at 1‑800‑375‑5283 or visit the USCIS website’s “Ask a Question” page.

Apply for U.S. Citizenship – Fillable N‑400 Form

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Apply for U.S. Citizenship – Fillable N‑400 Form

Becoming a U.S. citizen is a major milestone, and the first official step is filing Form N‑400, Application for Naturalization. This fillable PDF is provided directly from USCIS, so you can be sure you’re using the latest version.

Instead of printing, scanning, or editing the PDF with a separate editor, simply click the "Fill out this form" button on this page. The Formize PDF Filler app will load instantly, allowing you to type, check boxes, and sign directly in your browser.

Below you’ll find everything you need to know about the N‑400, from who can apply to how to avoid common errors that can delay processing.

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FAQ

Do I need to print the N‑400 after filling it out online?
No. The Formize PDF Filler lets you complete, sign, and download the form electronically. You can submit the PDF online through your USCIS account or print it if you prefer a paper filing.
Is the PDF on this page the latest version?
Yes. The link points to the official USCIS file (n-400.pdf) which is updated whenever USCIS releases a new edition.
Can I save my progress and finish later?
Absolutely. The filler includes a “Save & Continue Later” button that creates a secure download of your partially completed form.
What if I make a mistake after I’ve signed?
You can use the “Undo” button to correct errors before signing. After signing, you’ll need to download a new copy, correct the mistake, and sign again.
How do I know which supporting documents to attach?
The N‑400 instructions (linked at the bottom of the PDF) list required documents such as a copy of your green card, marriage certificate, and tax returns. Attach PDFs in the order shown in the instructions.
Is there a fee for filing the N‑400?
Yes. As of 2024, the filing fee is $640 plus an $85 biometrics fee, payable to the U.S. Department of Homeland Security.
Can I submit the completed N‑400 through my USCIS online account?
Yes. After downloading the filled PDF, log in to your USCIS account, select “File a Form,” upload the PDF, and pay the fee securely.
What if I’m applying for citizenship based on marriage to a U.S. citizen?
You still use the standard N‑400, but you’ll need to include additional evidence of the marital relationship, such as a marriage certificate and proof of joint residence.
How long does the naturalization process take after I submit the N‑400?
Processing times vary by field office, but most applicants receive a decision within 8‑12 months after the application is received.
Who can I contact if I have questions about the form?
For general inquiries, call the USCIS Contact Center at 1‑800‑375‑5283 or visit the USCIS website’s “Ask a Question” page.

HOW TO

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Step 1 – Click the Fill‑out Button
Press the bright “Fill out this form” button on this page. The Formize PDF Filler will open in a new tab.
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Step 2 – Wait for the Filler to Load
The app loads in seconds. You’ll see a familiar PDF layout with editable fields highlighted.
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Step 3 – Enter Your Information
Type directly into each field, select dates from the calendar widgets, and check the appropriate boxes. All data is saved automatically as you type.
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Step 4 – Review, Sign, and Download
Use the built‑in review checklist, add your electronic signature, then download the completed PDF or export it straight to your email.

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