Do I Need to File N-600 for My Child to Get Citizenship?

Filing N-600 for a child is not legally required, but it is the standard way to obtain permanent proof that your child is a U.S. citizen. If your child was born abroad and either acquired citizenship at birth through a U.S. citizen parent or became a citizen automatically after birth under the Child Citizenship Act, the government does not issue a certificate on its own. You have to request one. Form N-600 is that request, and the Certificate of Citizenship it produces never expires.¹

Filing does not make your child a citizen. Your child already is one. The form simply asks USCIS to recognize that fact and document when citizenship was acquired. There is no deadline.¹

When Your Child Already Qualifies

The N-600 covers two situations. The one that fits your family determines what evidence you need to gather.

Automatic Citizenship After Birth

The most common path runs through the Child Citizenship Act of 2000, which took effect on February 27, 2001. A child born outside the United States automatically becomes a citizen when all of the following are true before the child turns 18:

At least one parent is a U.S. citizen, by birth or naturalization.
The child has been admitted as a lawful permanent resident, usually shown by a green card.
The child is residing in the United States in the legal and physical custody of the citizen parent.

When the last of those conditions falls into place, citizenship happens by operation of law. No ceremony, no application, no waiting period.²

The Child Citizenship Act is not retroactive. It applies only to children who were under 18 on February 27, 2001. Anyone already 18 by that date would not qualify under this provision and may need to pursue naturalization through Form N-400.³

Custody trips up more families than you might expect. Legal custody means the parent has lawful authority over the child, established by a court order or by operation of law in the relevant jurisdiction. Married parents living together are generally presumed to have it. Divorced parents typically need a decree awarding custody to the citizen parent. USCIS treats a parent with actual, uncontested custody as holding legal custody when no court order exists and no local law assigns custody elsewhere.⁴

Physical custody means the child lives with the citizen parent. A child living with a non-citizen grandparent in the United States while the citizen parent lives elsewhere does not meet this requirement.⁴

Adopted children can qualify under the same framework, but the adoption must be full, final, and complete. If the foreign adoption was not finalized or the adopting parent did not personally observe the child during the proceedings, the child must be readopted in the United States. Some states recognize foreign adoptions as full and final under their own laws, which can satisfy this requirement without a separate readoption. The application must include the final adoption decree.²

A child born out of wedlock to a U.S. citizen father must first be legitimated under the laws of the child’s country of residence or the father’s country of residence. Once legitimated, if the child lives with the citizen father, USCIS presumes the father has legal custody absent contrary evidence. Documentation of legitimation goes with the application.²

Citizenship at Birth Abroad

Some children are U.S. citizens from the moment they are born, without ever needing a green card. This applies when one or both parents were U.S. citizens at the time of birth and met certain physical-presence requirements in the United States before the child was born. The exact requirements depend on whether both parents were citizens, whether they were married, and the dates involved.

The N-600 is still the correct form for this situation. Instead of a green card, you submit proof that the citizen parent lived in the United States for the required period before the birth. School records, employment records, military records, mortgage documents, and affidavits from people with personal knowledge of the parent’s U.S. presence can all serve as evidence.¹

Certificate of Citizenship or Passport

A U.S. passport proves citizenship and works for most purposes, so many families start there. It is faster and cheaper. But a passport is a travel document issued by the State Department, and it expires. Passports for children under 16 are valid for just five years and cannot be renewed by mail; each renewal means a fresh application with new photos and fees.⁵

The Certificate of Citizenship is permanent and creates a record within Department of Homeland Security databases that your child is a citizen. That record can matter for federal employment, security clearances, and benefits verification. Over a lifetime, avoided passport renewals may offset the certificate’s higher upfront cost. Many families obtain both when the budget allows. If you can only do one right now, a passport handles immediate travel needs while you save for the certificate.

Documents to Gather

Every N-600 application needs a core set of records:

The child’s birth certificate from the civil authority in the country of birth.
Evidence of the parent’s U.S. citizenship, such as the parent’s birth certificate, naturalization certificate, Consular Report of Birth Abroad, or valid U.S. passport.
The Permanent Resident Card or other proof of lawful permanent resident status, for children claiming derived citizenship.
Custody documentation, such as a marriage certificate, divorce decree, or court order.
The adoption decree if applicable, including evidence of state recognition of a foreign adoption where relevant.
Legitimation evidence if the child was born out of wedlock and claims citizenship through the father.

For children claiming citizenship at birth abroad, include proof that the citizen parent physically lived in the United States before the birth. Employment records, school transcripts, military service records, and property documents all work.²¹

Every document in a foreign language needs a full English translation. The translator must certify in writing that the translation is complete and accurate and that they are competent to translate from the foreign language into English. The certification should include the translator’s name, signature, address, and date. Anyone fluent in both languages can provide a certified translation; you don’t need a professional service, though many families hire one. Certified translation for a single document like a birth certificate typically runs $30 to $75, with rush services adding to the cost.

Filing and Fees

You can file the N-600 online or by mail. A USCIS online account lets you pay electronically, upload documents, and track case status. Paper applications go to a designated USCIS Lockbox facility.⁶

The filing fee is $1,385. Check the USCIS fee schedule (Form G-1055 on uscis.gov) before filing, since fees are periodically adjusted. Families who cannot afford the fee may request a waiver by filing Form I-912 alongside the application. To qualify, household adjusted gross income must be at or below 150 percent of the Federal Poverty Guidelines based on household size.⁷

After USCIS accepts the application, you receive a receipt notice with a tracking number. The agency may schedule a biometrics appointment for fingerprints and photographs, and in some cases an interview at a local field office. Processing times vary by office and caseload; the USCIS processing times page shows current estimates. Once approved, the Certificate of Citizenship is mailed to you.

If the Application Is Denied

A denial is not necessarily the end. You can challenge it by filing Form I-290B, Notice of Appeal or Motion, generally within 33 calendar days from the date USCIS mails the denial.⁸

Form I-290B offers two options. A motion to reopen is appropriate when you have new documentary evidence that was not part of the original application; simply resubmitting the same evidence does not qualify. A motion to reconsider is appropriate when you believe USCIS misapplied the law or its own policy to the record already before it. The agency will not consider new facts on a motion to reconsider.⁹

The most common reason N-600 applications are denied is missing or insufficient custody documentation. Divorced parents, separated parents, and parents who were never married should treat that paperwork as a priority from the start.

When N-600 Is Not the Right Form

If your child regularly lives outside the United States and did not acquire citizenship at birth, Form N-600K is the appropriate application. That form covers children applying for citizenship under INA Section 322 through a U.S. citizen parent while residing abroad, and the child must appear in person at a USCIS office or U.S. embassy for the oath of allegiance.¹⁰

If your child is over 18 and never met the conditions for automatic citizenship before turning 18, the N-600 does not apply. That person would pursue naturalization through Form N-400 as a lawful permanent resident, meeting the standard residency and good-character requirements.

Filing as an Adult

An adult who believes they automatically became a citizen before turning 18 can still file Form N-600 to obtain a certificate. There is no age cutoff and no penalty for waiting. The requirements do not change: all conditions for citizenship must have been met before age 18, and the applicant must have been under 18 on February 27, 2001.¹

Adults who acquired citizenship at birth abroad through a citizen parent can also file N-600 regardless of age. Either way, adults file on their own behalf rather than through a parent.

1
U.S. Citizenship and Immigration Services (USCIS). Form N-600, Instructions for Application for Certificate of Citizenship
2
eCFR. 8 CFR Part 320 – Child Born Outside the United States and Residing Permanently in the United States
3
U.S. Citizenship and Immigration Services (USCIS). USCIS Policy Manual Volume 5 Part F Chapter 1 – Purpose and Background
4
U.S. Citizenship and Immigration Services (USCIS). Policy Alert – Custody in Acquisition of Citizenship Context
5
U.S. Department of State. Apply for a Child’s Passport Under 16
6
U.S. Citizenship and Immigration Services. Tips for Filing Forms Online
7
U.S. Citizenship and Immigration Services (USCIS). Form I-912, Instructions for Request for Fee Waiver
8
U.S. Citizenship and Immigration Services. I-290B, Notice of Appeal or Motion
9
U.S. Citizenship and Immigration Services (USCIS). Chapter 4 – Motions to Reopen and Reconsider
10
U.S. Citizenship and Immigration Services (USCIS). Application for Citizenship and Issuance of Certificate Under Section 322