General disclosure about Form N 400

Filing and Interview

Application for US Naturalization N-400 and Related Forms


N-400 is a form commonly used to apply for naturalization. It may be submitted by mail or online. However, in case you want to request a fee waiver, it must be submitted by mail only.

Once you become eligible, our accredited immigration specialist will help you to prepare and submit your petition for naturalization.

As part of the naturalization process, all US citizenship applicants are required to provide supporting documents and initiation evidence. The list of required documents may vary and depends on your application category (continuous residence, marriage to a US citizen, or another category.)

Document center 

In the Document Center you can upload documents which are required for US naturalization and exchange the correspondence with immigration specialist accredited by the US Immigration and Citizenship Services who will individually manage your case.  

Here is what you can do in Document Center:

  • Take a test for Eligibility for US Citizenship;   
  • Upload required initial evidence, photographs, and proofs; 
  • Schedule a consultation in case of special circumstances;

Our accredited specialistwill analyze your data and get in touch with you regarding subsequent steps. This is what our specialist will do:

  • Create a personalized check list for your case;
  • Review and confirm the acceptability of initial evidence;
  • Provide a consultation in case of special circumstances;
  • Process your case with the USCIS on your behalf and get updates regarding the interview, biometrics, and oath.

Upon completion of your dossier,you will be further guided by our accredited specialist all the way to your US citizenship.


What Supporting Documents Do You Need to Become a US Citizen?

Generally, not an awful lot, but all depends on your personal circumstances, application category, etc. Here is the paperwork generally needed to initiate your N-400 application:

Form or Document


Who Needs to Submit It



  • Proof of LPR
(green card)


Copy (front and back) of your“Permanent Resident Card,” or Form I-551

All categories of applicants.

If your green card has expired or is about to expire,please visitour dedicated page, and we will help you to renew it.

  • Proof of Current Marital Status

(if applicable)

    Marriage certificate
or any of the following, if applicable:

  • Divorce papers
  • Annulment certificate
  • Death certificate
  • Single status certificate

Anycurrently or previouslymarried applicants.


  • Proof of Identity


Two passport-style photos (2x2 inches)


Persons applying for US naturalization fromabroad.


Notice of Entry of Appearance as Accredited Representative

All of our applicants, as this form allows us to act on your behalf in the capacity of an applicant, petitioner, or respondent in all matters related to your N-400 Application for Naturalization.



(if applicable)

Medical Certification for Disability Exceptions, if applicable.

If you are seeking an exception to the English and/or civics requirement for naturalization because of a physical or developmental disability.

  • Fee Payment
Fee payment, fee waiver, or reduced fee.

Please visit our dedicated page, and we will help you to determine, reduce, or entirely waive the fee.

Once your application is accepted, you will be invited for a personal interview. You will need to bring along the originals of all relevant documents. Depending on your personal circumstances, you may need to submit supplemental forms and provide additional evidence.

Please contact us for more details or sign up for a consultation. Keep in mind that our service is free of charge.

Fee for Filing Application for US Naturalization N 400 The US Citizenship and Immigration Service charge a fee to process your application for naturalization.
A disability waiver exempts certain applicants for naturalization from taking an English language test and allows such applicants to take a test in US history and civics in their native language with..
There are a few forms that you should be aware of, as they may be relevant for your petition.
Fee Waiver