N-400 Naturalization Application

Your complete filing package — not just the form:

Completed N-400 application — every field validated against USCIS rules
Personalized cover letter addressed to USCIS with your document list
Filing checklist tailored to your situation — nothing missing
Step-by-step mailing instructions with your correct lockbox address
Payment authorization form (G-1450/G-1650/G-1651) pre-filled
E-notification signup (G-1145) so USCIS confirms receipt

One PDF. Print, sign where marked, mail. Done.

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Included Forms

Form N-400, Application for Naturalization
PrimaryIncluded
Form G-1145, e-Notification of Application/Petition Acceptance
Included
Form N-648, Medical Certification for Disability Exceptions
Disability exception only.
If applicable
Form G-1450, Authorization for Credit Card Transactions
Credit card payment only.
If applicable
Form G-1650, Authorization for ACH Transactions
ACH debit payment only.
If applicable
Form G-1651, Exemption for Paper Fee Payment
Check/money order payment only.
If applicable

Included Documents

N-400 Filing Instructions
Filing Checklist
Cover Letter

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Not legal advice. FormSnake is a software tool that helps you fill out government forms accurately. We are not a law firm. We strongly recommend reviewing your completed forms with a qualified attorney before submitting them to any government agency.