What is this service?
Form N‑600 is used to apply for a U.S. Certificate of Citizenship for people born outside the United States who already acquired citizenship through their parents, either at birth or automatically after birth.
This process does not grant new citizenship. It provides an official document that proves the citizenship the person already has.
Who is this service for?
- People born outside the United States who acquired citizenship at birth through their parents, under the applicable law.
- People who automatically acquired citizenship after birth by meeting the legal requirements before age 18.
- Adults who acquired citizenship as children but never applied for their certificate.
- Parents or legal guardians filing on behalf of an eligible child.
Note: Having a U.S. citizen parent does not automatically make a person a citizen. The applicable legal requirements must be met.
Did my child automatically become a citizen?
Under the general rules for derived citizenship in INA 320, these conditions usually must be met before age 18:
- At least one parent is a U.S. citizen, by birth or naturalization.
- The child is a lawful permanent resident (Green Card holder).
- The child resides in the United States.
- The child lives in the legal and physical custody of the U.S. citizen parent.
When all applicable requirements are met, the child may automatically acquire citizenship without filing a naturalization application.
Important: The law that applies depends on the dates and circumstances of the case. There are special rules for adoptions and for people who turned 18 before February 27, 2001.
Can I file Form N‑600 if I am already over 18?
Yes. A person who automatically acquired citizenship as a child can apply for a Certificate of Citizenship after turning 18.
What matters is showing that the legal requirements were met at the required time.
Differences between N‑600, N‑600K, and CRBA
| Process | What is it used for? |
|---|---|
| N‑600 | To document U.S. citizenship that was already acquired through the parents. |
| N‑600K | For certain children who generally live outside the United States and may obtain citizenship under INA 322. |
| CRBA | To document the birth abroad of a person who acquired U.S. citizenship at birth. |
Not every child born abroad needs the same process. The right option depends on how and when they acquired, or may acquire, citizenship.
What does our service include?
- Preparation of Form N‑600 with the information you provide.
- Review and organization of citizenship and family relationship documents.
- Organizing evidence of residence, custody, and living together, when applicable.
- Certified translations of the required documents.
- Preparation of your application package and filing instructions for USCIS.
- Document assistance with requests for additional evidence (RFEs), as set out in your contract.
Main documents
- Applicant's birth certificate.
- Proof of the parent's U.S. citizenship.
- Applicant's permanent resident card, when applicable.
- Marriage or divorce certificates or custody documents, if applicable.
- Evidence of residence and living with the U.S. citizen parent, when applicable.
- Proof of the parent's physical presence in the United States, if citizenship at birth is claimed.
- Adoption, legitimation, or paternity acknowledgment documents, when applicable.
Documents vary depending on how citizenship was acquired. After you hire us, we will email you the questionnaire and the matching document list. Please do not send documents through the form on this page.
Costs
Our fees
Government filing fees
| Form | Fee |
|---|---|
| N-600 | $1,385 by mail or $1,335 online |
Some applicants may qualify for a fee waiver. Amounts should be verified with USCIS before filing.
USCIS fees per the official fee schedule (Form G-1055, edition 10/26/26). Fees may change: we confirm them before filing. uscis.gov/g-1055 (opens in a new tab)
Government fees are paid separately and are not included in our fees.
How to get started
- Fill out the request form.
- Receive the service information, the contract, and the questionnaire by email.
- Review and sign the contract before making any payment. Then send the required documents so we can begin preparing your forms.
Ge Chanfon Services LLC provides document preparation and administrative assistance services. We are not a law firm and do not provide legal advice. Approval of any application is decided by the appropriate government agency.