Part 1: Information About Service Member
A-Number if any, DOD ID Number, full legal name, Social Security number if any, USCIS online account number if any, and date of birth.
N-426
Request for Certification of Military or Naval Service
- Agency
- USCIS
- Revision
- Edition 03/13/26
- Fillable fields
- 31
- Pages
- 2
- Official source
- USCIS form page
- Checked
- October 20, 2026
Form N-426: Request for Certification of Military or Naval Service
Form N-426 is used by applicants for naturalization to request that the Department of Defense verify their military or naval service. The instructions say it is for a service member who is applying for military naturalization under Immigration and Nationality Act section 328 or 329 and is currently serving in the U.S. armed forces, and that it is submitted with Form N-400, Application for Naturalization.
The service member completes Parts 1 and 2. An official with certifying authority in the service member's branch completes Parts 3 and 4 and signs them.
The USCIS page says a person who previously served does not submit Form N-426. Instead it points to a copy of DD Form 214, NGB Form 22 or an equivalent discharge document for all periods of service. The page lists edition 03/13/26 and says that starting June 1, 2026, USCIS accepts only the 03/13/26 edition.
What's on Form N-426
Part 2: Service Member's Certification and Signature
An authorization to release the information USCIS may need, a certification under penalty of perjury, and the service member's signature and date.
Part 3: Certifying Official Attestation
The official's name, rank and title, the branch and start date of current service, whether the member is serving honorably or not honorably, and the type of service: Active Duty, Selected Reserve of the Ready Reserve, or Other.
Part 3 continued: Information About the Certifying Official
The official's branch of service, unit (such as a base, vessel, battalion or brigade), work telephone number, military email address and signature.
Part 4: Remarks
Space for the official to give any derogatory information in the records about the member's character, loyalty, investigations, pending courts martial, convictions or discharge type, with a signed written statement if more space is needed.
How to fill out Form N-426
- 1
Use the 03/13/26 edition
The USCIS page says that starting June 1, 2026, it accepts only the 03/13/26 edition. On a printed copy, keep the edition date and page numbers visible at the bottom of every page, with all pages from the same edition.
- 2
Fill in Part 1 in black ink
Type or print legibly. The instructions say to write N/A where a question does not apply, unless told otherwise. An online account number only exists if an earlier form had a receipt number starting with IOE, and it is not the A-Number.
- 3
Sign Part 2
The instructions say USCIS does not accept a stamped or typewritten name in place of a signature. A photocopied, faxed or scanned copy of an original with a handwritten signature is treated as valid.
- 4
Pass the form to an authorized official
The instructions say certifying officials complete Parts 3 and 4, and that both the service member and the certifier sign where indicated.
- 5
Submit it with Form N-400
The USCIS page says Form N-426 is filed or uploaded with the electronic Form N-400, or for a paper filing, sent using the Direct Filing Addresses for Form N-400.
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Where to file, fees and processing
Where to file
The USCIS page says Form N-426 is filed or uploaded with the electronic Form N-400, or sent using the Direct Filing Addresses for Form N-400 when filing on paper.
Answering a Request for Evidence
When a Request for Evidence asks for Form N-426, the page says to return it to the office that requested the certification.
Fee
The USCIS page says the filing fee is on its Fee Schedule page, and the instructions point to Form G-1055. Fees can change, so check them on the day you file.
Unsigned forms
The USCIS page says it rejects any unsigned form.
Incomplete forms
The instructions say that if the service member and the certifying official do not each complete their portions, the applicant will not establish a basis for eligibility and USCIS may reject or deny the Form N-400.
Help for military applicants
The instructions list the toll-free military help line 877-CIS-4MIL (877-247-4645). The page also points to the M-599, Naturalization Information for Military Personnel brochure.
Related forms
Who uses Form N-426?
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Questions about Form N-426
Do veterans who have left the military file Form N-426?
No. The USCIS page says a person who previously served does not submit Form N-426, and sends a copy of DD Form 214, NGB Form 22 or an equivalent discharge document for all periods of service instead.
Who can certify Form N-426?
The instructions say only personnel with certifying authority from the military branch, generally an official in pay grade O-6 or higher or GS-15 or higher. Recruiters cannot certify it.
Which edition of Form N-426 does USCIS accept?
The USCIS page lists edition 03/13/26 and says that starting June 1, 2026, it accepts only the 03/13/26 edition. Until then the 03/09/23 edition was also accepted.
Is Form N-426 filed on its own?
No. The USCIS page says it is filed or uploaded with Form N-400, unless USCIS sent a Request for Evidence for it, in which case it goes back to the office that asked.
What is the Form N-426 filing fee?
USCIS fees change, so this page does not list one. The N-426 page points to the USCIS Fee Schedule, and the instructions point to Form G-1055.