# Form N-400

URL: https://pdf.net/pdf-forms/immigration-forms/form-n-400
Category: Travel and Immigration Forms
Attributes: Trusted by accountants, Official IRS form

Form N-400 is used by permanent residents of the U.S. to apply for naturalization and become full-fledged U.S. citizens.

Select our fillable Form N-400, open it in our PDF editor, and complete it with the required information. Once you’re done, you can download this document to your device and submit it right away.

## Versions

- 2025 — [download PDF](https://cdn.sanity.io/files/i16te7yp/production/f576b81c99df444573b134803992f2ab28b65dd4.pdf)

## How to Fill Out a Form N-400

Step 1: Gather the required documents and evidence necessary for submitting Form N-400 (Green Card, marriage certificate, reports of previous arrests and convictions).

Step 2: Open Form N-400 in our PDF editor.

Step 3: Check your eligibility box.

Step 4: Provide information about yourself according to the Form N-400 instructions.

Step 5: Complete the details about the interpreter or preparer if it’s someone other than you.

Step 6: Sign and submit the form to the USCIS.

## Facts

### What Is the Form N-400?

Form N-400, also known as the Application for Naturalization, is a document that must be submitted to start the process of becoming a U.S. citizen.

### Who Is Required to Fill Out Form N-400?

Any permanent resident of the U.S. who wishes to become a U.S citizen is required to fill out and submit Form N-400. However, they must meet specific eligibility requirements first, such as being a permanent resident for at least 5 years, or at least 3 years if they are married to a U.S. citizen.

### When Should You File Form N-400?

You should file Form N-400 when you want to apply for naturalization, 90 days before you complete the continuous residence requirement. The specifics may differ depending on what your eligibility is based on.

### What Are the Consequences of Errors or False Information on Form N-400?

The consequences of errors or false information on Form N-400 for citizenship can be quite severe, ranging from delays and denial to deportation and criminal prosecution. The latter is likely if it’s established that you’ve attempted to commit immigration fraud.

### Where Do I File the Form N-400?

You should file Form N-400 with the U.S. Citizenship and Immigration Services (USCIS), either electronically or by mail. The easiest option is to create a USCIS account and complete the process there. If you opt for the paper submission, you can find where to mail Form N-400 on the USCIS website.

## Related forms

- [Form I-485](https://pdf.net/pdf-forms/immigration-forms/form-i-485)
- [Form I-130](https://pdf.net/pdf-forms/immigration-forms/i-130-form)
- [Form I-765](https://pdf.net/pdf-forms/immigration-forms/I-765-form)
- [Form AR-11](https://pdf.net/pdf-forms/immigration-forms/ar-11-form)
- [Passport Renewal Form](https://pdf.net/pdf-forms/immigration-forms/passport-renewal-form)