N-600 Certificate of Citizenship for Children Born Abroad in 2026

Many families do not realize their child is already a U.S. citizen. Others realize it but never obtain formal documentation until decades later when the child needs to prove citizenship for a driver's license, passport, or federal job. The N-600 is the tool for cleaning up that documentation gap.

Automatic citizenship at birth abroad: who qualifies

The rules for citizenship at birth abroad depend on whether one or both parents are U.S. citizens, whether the parents are married, and whether the U.S. citizen parent(s) meet physical presence requirements. INA §301 sets out the framework.

Both parents U.S. citizens, married

Child acquires citizenship at birth if at least one parent had a residence in the U.S. or its territories before the child's birth. Duration of residence is not specified — even a brief prior residence suffices. This is the simplest case.

One parent U.S. citizen, one non-citizen, married

For children born on or after November 14, 1986, the U.S. citizen parent must have been physically present in the U.S. or its territories for at least 5 years before the child's birth, with at least 2 of those years after age 14. For children born before that date, different (typically longer) rules apply — consult INA §301 as it existed at the child's birth date.

Child born out of wedlock, U.S. citizen mother

Under INA §309(c), the mother must have been physically present in the U.S. for a continuous period of at least 1 year before the child's birth. This is easier to satisfy than the married-parents rule.

Child born out of wedlock, U.S. citizen father

Under INA §309(a), the father must have been physically present in the U.S. for the same 5-year period (2 of which after age 14), AND: (1) blood relationship established by clear and convincing evidence, (2) father was a U.S. citizen at the time of the child's birth, (3) father agreed in writing to provide financial support until age 18, and (4) child was legitimated, formally acknowledged, or adjudicated by court as the father's child before age 18.

N-600 vs Consular Report of Birth Abroad (CRBA)

Two documents can serve as evidence of U.S. citizenship acquired at birth abroad:

• CRBA (Consular Report of Birth Abroad, Form FS-240): filed at a U.S. embassy or consulate abroad, typically within weeks or months of the child's birth. Serves as primary evidence of citizenship for life. Costs $100. Fastest and simplest option when the family is abroad at birth and can visit the embassy.
• N-600 (Application for Certificate of Citizenship): filed with USCIS, usually years after the child's birth. Fee $1,385 in 2026. Processing 8-16 months. Results in a Certificate of Citizenship (Form N-560), which is the strongest documentary evidence of citizenship.

In practice, families that were abroad at the child's birth and had access to a U.S. embassy typically got a CRBA. Families that returned to the U.S. before the child's citizenship was documented, or that did not know about CRBA, often file N-600 years later.

When you actually need an N-600

• The child needs formal proof of citizenship for school enrollment, government benefits, or federal job applications, and does not have a valid U.S. passport or CRBA.
• The child was born abroad, has never had a U.S. passport, and the family wants formal documentation for future use.
• The child obtained citizenship derivatively when a parent naturalized (INA §320 — automatic citizenship for LPR children under 18 residing with a naturalizing USC parent). N-600 documents this derivative acquisition.
• Court order or estate matter requires certificate of citizenship as primary evidence.
• Adopted child — INA §320 covers automatic citizenship for adopted children under specific conditions.

A U.S. passport is also proof of citizenship

For many families, applying for the child's U.S. passport is a faster, cheaper alternative to N-600. The State Department reviews birth documentation and issues a passport that itself is evidence of citizenship (though not a Certificate of Citizenship). Passport fees for children are approximately $135 (2026). Processing 8-11 weeks routine, 5-7 weeks expedited.

A passport works for most practical purposes: travel, driver's license, employment verification. If you specifically need a Certificate of Citizenship (some federal job applications require it, and it never expires), file N-600. Otherwise, the passport is usually sufficient and much faster.

What the N-600 packet includes

• Form N-600 completed by the applicant (or by parent/guardian if applicant is a minor).
• Filing fee of $1,385.
• Applicant's birth certificate (original or certified copy), translated if not in English.
• U.S. citizen parent's evidence of citizenship (U.S. birth certificate, naturalization certificate, prior CRBA, U.S. passport).
• Marriage certificate of parents (if applicable) and any divorce decrees ending prior marriages.
• Evidence of U.S. citizen parent's physical presence in the U.S. before the child's birth: school records, employment records, tax returns, military records, immunization records, medical records, passport stamps, affidavits from relatives.
• If citizenship acquired derivatively via parent's naturalization: parent's naturalization certificate, evidence of child's LPR status, evidence of parent's legal and physical custody at the relevant time.
• Two passport-style photos.

N-600 processing timeline in 2026

USCIS field offices adjudicate N-600 applications with wide variance. Routine timelines are 8-16 months. Applications with unusual issues (out-of-wedlock births decades ago, complex physical presence documentation, prior denials) can extend beyond 24 months. The applicant does not need to be present in the U.S. during processing but must appear for an interview at a USCIS field office when scheduled.

Special case: derivative citizenship under INA §320

A child born abroad who did not acquire citizenship at birth may still acquire it automatically if, before age 18: (1) at least one parent is a U.S. citizen (by birth or naturalization), (2) the child is a lawful permanent resident, and (3) the child is residing in the U.S. in the legal and physical custody of the U.S. citizen parent. This is the derivative citizenship pathway most commonly used by children of naturalizing parents.

Derivative citizenship is automatic — no application required to acquire it. N-600 is used to document it. Once the child turns 18, this pathway closes; children over 18 must naturalize on their own via N-400 (or a special §322 process if outside the U.S.).

Practical checklist

1. Determine which INA section applies based on parent citizenship, marital status, and child's birth date.
2. Calculate whether the U.S. citizen parent meets the physical presence requirement.
3. Decide whether a U.S. passport or N-600 (or both) best meets the family's need.
4. Gather documentation early — physical presence evidence often takes weeks to obtain.
5. If citizenship was acquired derivatively via parent naturalization, file N-600 before the child turns 18 to preserve the evidence trail.