Naturalization is the process to become a U.S. citizen if you were born outside of the United States. If you meet certain requirements, you may become a U.S. citizen either at birth or after birth. Use this form to apply for U.S. citizenship. Check your eligibility.
04/01/24 . You can find the edition date at the bottom of the page on the form and instructions.
Dates are listed in mm/dd/yy format.
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Where to FileYou generally have 2 options for filing your Form N-400 with USCIS:
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:
Attorneys and accredited representatives: You may also create an online account, which will allow you to manage all your clients’ applications in one place.
You cannot file online if you are requesting a fee waiver or a reduced fee; you must file a paper Form N-400.
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.
When to FileYou may file Form N-400, Application for Naturalization, 90 calendar days before you complete your continuous residence requirement if your eligibility for naturalization is based upon being a:
Please see our USCIS Early Filing Calculator page for additional information.
Filing FeeYou can find the filing fee for Form N-400 by visiting our Fee Schedule page.
If you file your Form N-400 by mail (paper), you can pay the fee with a money order, personal check, or cashier’s check or by credit card or debit 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 fees are final and non-refundable, regardless of any action we take on your application, petition, or request, or if you withdraw your request. If you pay by credit card or debit card, you cannot later dispute the payment. Use our Fee Calculator to help determine your fee.
If you are submitting multiple forms, 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. We may reject your entire package if you submit a single, combined payment for multiple forms.
Did you know? USCIS will automatically extend the validity of your Permanent Resident Card (commonly called a Green Card) for up to 24 months after you properly apply for naturalization. This update is expected to help naturalization applicants who experience longer processing times, because they will receive this automatic extension of lawful permanent resident status and may not need to file Form I-90, Application to Replace Permanent Resident Card (Green Card). See more information here.
Checklist of Required Initial Evidence (for informational purposes only)Please do not submit this checklist with your Form N-400. The checklist 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 into English.
Basis for Filing
Documentation
NOTE: If you were sentenced to jail or prison or received an alternative sentence or probation, you must also provide evidence to show that you completed your period of jail, prison, alternative sentence, or probation.
Documentation of traffic incidents only if the incident:
You cannot file online if you are requesting a fee waiver or a reduced fee; you must file a paper Form N-400.
Filing Tips: Review our Tips for Filing Forms by Mail page for information on how to ensure we will accept your form.
Don’t forget to sign your form. We will reject any unsigned form.
Special InstructionsE-Notification: If you want to receive an email and/or text message that we have accepted your form at a USCIS lockbox, complete Form G-1145, E-Notification of Application/Petition Acceptance, and clip it to the first page of your form.
We will review your application and conduct required background and security checks, which may include you providing us with your fingerprints. This can be done in 1 of these ways:
If you have case specific questions, you may contact the Military Help Line at 877-CIS-4MIL (877-247-4645, TTY: 800-877-8339) or militaryinfo@uscis.dhs.gov.
Related LinksLearn About Citizenship
Citizenship Tools and Resources
File Online
Paying with a Credit Card
Prepare for the Interview and Test
Filing Tips and Guidance
Policy and Guidance