Form N-400, Application for Naturalization
Available now $112 through November 19, 2026, Eastern Time, then $127. Software fee only; USCIS filing fees are paid separately.
What’s included
- Guided questionnaire in English and Spanish.
- Type answers yourself, or use optional photo autofill from supported documents. You confirm every field. Social Security numbers and Yes/No answers are not filled from photos.
- A free preview marked not for filing. After payment, your browser builds the final PDF on your device.
- Your answers stay in the browser and are not stored on our servers.
What's not included
Keystone Citizen is not a law firm and does not give legal advice. You review, sign, mail, and file the application yourself, and you pay USCIS filing fees directly to USCIS. USCIS filing fees are not included in our software fee.
Software-Fee-Only Guarantee
We refund the Keystone Citizen software fee in full within 14 days if you have not downloaded the final PDF, or if the PDF you downloaded uses an outdated or wrong USCIS form edition on the date you generated it, or has a software formatting or page defect we cannot promptly fix. We never collect or reimburse USCIS government filing fees, and we do not guarantee USCIS approval.
November 2026 USCIS filing checklist
Lockbox addresses (post–November 9 cutoff)
USCIS updated paper filing addresses on October 7, 2026, and the grace period ended November 9, 2026. Always verify the current Direct Filing Address on uscis.gov and match the USPS P.O. Box versus the FedEx, UPS, or DHL street address, and the family versus non-family charts.
No paper checks or money orders
Paper filers generally pay with Form G-1450 (a U.S.-issued credit, debit, or prepaid card) or Form G-1650 (ACH debit from a U.S. bank account), or file Form G-1651 if they qualify for an exemption. Use one payment form per benefit request. A declined or combined payment can cause the whole packet to be rejected, with no filing date.
Current editions and October 16 fee rules
Form I-485 requires edition 09/18/26 (no grace period; editions 01/20/25 and 09/04/26 are rejected). Form I-864 requires edition 08/24/26 since October 1, 2026. The October 16, 2026 H.R. 1 inflation increases apply only to specific add-on fees (for example, the I-131 immigration parole fee is $1,050, and certain asylum, parole, or TPS initial EADs are $570). Core N-400 fees ($710 online / $760 paper) and I-485 fees ($1,390 online / $1,440 paper) did not change. Confirm the current G-1055 fee schedule, edition 10/26/26, on uscis.gov.
I-693 medical exam and N-400 filing note
Paper I-485 filers should keep the I-693 in the civil surgeon’s original sealed envelope. Online I-485 filers open the envelope and upload the form, and should keep the original and the envelope until a decision. Form N-400 online filing is $710 versus $760 for paper; reduced-fee and fee-waiver requests generally require a paper filing.