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N-400Official USCIS form guideCitizenship and Naturalization

N-400: Naturalization (U.S. Citizenship)

Application for Naturalization. Become a U.S. citizen after meeting residency and other requirements.

6-12 months typical processingModerate difficulty8 steps
Start with step 1 below

What you’ll need before you start

Gather these so you’re ready. You don’t have to have everything before step 1, but it helps.

  • Green card
  • Tax returns, travel records
  • Filing fee

How to use this guide

1 Do steps in order2 Tap step to expand Check off when done💡 Read tips & warnings

Steps

Step 1
Step 2Premium

This step is available with a premium subscription.

Step 3Premium

This step is available with a premium subscription.

Step 4Premium

This step is available with a premium subscription.

Step 5Premium

This step is available with a premium subscription.

Step 6Premium

This step is available with a premium subscription.

Step 7Premium

This step is available with a premium subscription.

Step 8Premium

This step is available with a premium subscription.

This guide is for general information only. Forms, fees, and rules change. Always use the official USCIS website for current forms, instructions, and filing.

Go to uscis.gov

Estimates use public USCIS data—for planning only. For official status, use uscis.gov.

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