Form N-400

Application for Naturalization

What do you need?


(Add the $85 biometric fee for a total of $725, where applicable. See exceptions below.)

If you file your Form N-400 online, you may pay your fee online.

If you file your Form N-400 by mail (paper), you may pay the fee with a money order, personal check, cashier’s check or pay by credit card using Form G-1450, Authorization for Credit Card Transactions. If you pay by check, you must make your check payable to the U.S. Department of Homeland Security.

When you send a payment, you agree to pay for a government service. Filing and biometric service fees are final and non-refundable, regardless of any action we take on your application, petition, or request, or if you withdraw your request. Use our Fee Calculator to help determine your fee.

Pay each filing fee separately. We are transitioning to electronically processing immigration benefit requests, which requires us to use multiple systems to process your package. Because of this, you must pay each filing fee separately for any form you submit. We may reject your entire package if you submit a single, combined payment for multiple forms.


  • Applicants 75 years of age or older do not need to pay a biometric fee. They only need to pay the $640 filing fee.
  • No filing fee or biometric services fee is required for military applicants filing under section 328 or 329 of the INA.

You generally have two options for filing your Form N-400 with USCIS:

  • Online; or
  • By mail (paper).

Filing Your Form N-400 Online

You must create a USCIS online account to file your Form N-400 online. Having an online account will also allow you to:

  • Pay your filing fee online;
  • Check the status of your case;
  • Receive notifications and case updates;
  • View personalized case completion date estimates;
  • Respond to requests for evidence; and
  • Manage your contact information, including updating your address.

Attorneys and Accredited Representatives: You can also create an online account, which will allow you to manage all of your clients’ applications in one place.

Filing Your Form N-400 by Mail

If you submit Form N-400 on paper, we will mail you a USCIS Account Acceptance Notice with instructions on how to create an online account to track and manage your case. We will process your application even if you do not create an online account, but we encourage you to create and access your online account. We will continue to mail you copies of notifications about your case. Please check our Direct Filing Addresses for Form N-400 page for information on where to mail your application. Applications that are not submitted to the appropriate direct filing address may experience processing delays.

Please do not submit this checklist with your Form N-400. It is an optional tool to use as you prepare your form, but does not replace statutory, regulatory, and form instruction requirements. We recommend that you review these requirements before completing and submitting your form. Do not send original documents unless specifically requested in the form instructions or applicable regulations.

If you submit any documents (copies or original documents, if requested) in a foreign language, you must include a full English translation along with a certification from the translator verifying that the translation is complete and accurate, and that the translator is competent to translate from the foreign language to English.

Did you provide the following?

  • A copy of your Permanent Resident Card (commonly called a Green Card);
  • A copy of your marriage certificate (if applicable);
  • Form N-426, Request for Certification of Military or Naval Service (if you are applying for naturalization based on military service);
  • DD Form 214, NGB Form 22, or discharge orders (if applying for naturalization based on military service and are separated from service);
  • A copy of your official military orders (if you are applying for naturalization based on military service and are currently serving);
  • Evidence of your citizen spouse’s employment abroad (if applying under INA 319(b)); and
  • Two passport-style photographs (if you reside outside the United States).

Which civics test will I take?

My filing date (also known as a received date) for my N-400 is…My initial examination (interview) is scheduled…Which test will I take at my initial examination (interview)?If I fail the civics test, which test will I take at my re-exam?

Which test will I take at my N-336 hearing?

*Applicable for applicants whose N-400 was denied and a request for hearing was filed…

Before Dec. 1, 2020 (12/1/2020).on any date.2008 Civics Test2008 Civics Test2008 Civics Test
On or after Dec. 1, 2020, (12/1/2020) and
before March 1, 2021 (03/01/2021).
before April 19, 2021 (04/19/2021).

You can choose between the:
2020 Civics Test
2008 Civics Test

You can choose between the:
2020 Civics Test
2008 Civics Test

You can choose between the:
2020 Civics Test
2008 Civics Test

On or after Dec. 1, 2020 ,(12/1/2020) and
before March 1, 2021 (03/01/2021).
on or after April 19, 2021 (4/19/2021).2008 Civics Test2008 Civics Test2008 Civics Test
On or after March 1, 2021 (03/01/2021).on any date.2008 Civics Test2008 Civics Test2008 Civics Test

Note: USCIS will offer both the 2008 and 2020 tests for a certain time period. For more information, refer to the USCIS Policy Manual Volume 12, Part E, English and Civics Testing and Exceptions, Chapter 2, English and Civics Testing.


Esta información ha sido recopilada directamente de la página web oficial de USCIS.

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