⚠ General information only — not legal advice. Consult a licensed immigration attorney for your situation.
USCIS · Form N-400

Application for Naturalization

Apply to become a US citizen through naturalization.

Filing fee
$760
Processing time
8–24 months
Filed with
USCIS — online or by mail
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Who needs this form?

Lawful permanent residents with 5 years as a green card holder (3 if married to a US citizen).

What does it do?

If approved, grants US citizenship. Includes English and civics tests, interview, and oath ceremony.

Key requirements

Common mistakes to avoid

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Official USCIS page for Form N-400
Always download the latest version from the official source.

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