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Form N-600

What the most common immigration forms are for, what they cost to file on paper or online, and what usually happens after you file.

What it is forApplication for Certificate of Citizenship (for people who are already citizens through a parent)
Filing fee (paper)$1,385
Filing fee (online)$1,335
What usually happens nextReceipt notice, possible interview, then the certificate

Fees change; USCIS rejects filings with the wrong fee. Check the USCIS Fee Calculator and Form G-1055 the day you file. Some humanitarian filings carry extra fees under Public Law 119-21 that cannot be waived.

General information only, not legal, insurance or financial advice. Not affiliated with any government agency. Exceptions can apply. Confirm with the agency that sent your notice or a licensed professional.

How we checked this

Fees follow USCIS Form G-1055 (edition 05/29/26) and the April 2024 fee rule, compared across two 2026 transcriptions. Separate Public Law 119-21 fees apply to some humanitarian filings and are adjusted each October. Last checked: November 12, 2026. Laws change; confirm with the state agency or a licensed professional before acting.

Cross-checked sources agree   Checked on official source confirmed on a government, court or legislature site   From a statute-cited table one detailed source   Under review sources disagree; read the note and the law.