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September 1, 2026
GWP IMMIGRATION LAW
The K-2 Visa: How Your Fiancé(e)’s Child Immigrates With Them
A plain-language guide to the visa category for the unmarried, under-21 children of a K-1 fiancé(e) visa holder.
The K-2 case rises or falls entirely with the K-1 petition it depends on, and it runs on a strict age clock most families never see coming.
Updated September 1, 2026 · GWP Law · Las Vegas, NVTHE CONTEXT
A Status That Exists Only Because the Parent’s Does
The K-2 visa is a nonimmigrant category for the unmarried child, under 21, of a K-1 fiancé(e) visa applicant, created so the child can accompany or follow the parent to the United States (INA § 101(a)(15)(K)).
K-2 status is derivative: it exists only because the K-1 parent’s case exists. If USCIS denies, revokes, or never receives the parent’s Form I-129F petition, the child cannot receive K-2 status either.
There is no separate petition for a K-2 child. The U.S. citizen petitioner must list each qualifying child by name directly on the same Form I-129F filed for the fiancé(e).
Not every child automatically qualifies. USCIS applies the standard immigration-law definition of “child”: a biological child, an adopted child, or a stepchild — but a stepchild only qualifies if the marriage creating that relationship happened before the child turned 18 (USCIS, definition of “child”).
Because a K-2 case never outlives the K-1 marriage requirement, a delay after arrival can undo it just as fast as a birthday can — a separate risk we cover in K-1 Visa and a Delayed Wedding.
Eligibility isn’t only about the child. The U.S. citizen petitioner and the K-1 parent must also qualify for the underlying K-1 case: both must be legally free to marry, must intend to marry within 90 days of the fiancé(e)’s arrival, and must have met in person within the two years before filing, with narrow exceptions.
The petitioner must also comply with the International Marriage Broker Regulation Act (IMBRA), which requires disclosing certain past criminal convictions and any prior K-1 petitions on Form I-129F; concealing that history can sink the entire case, K-2 children included (USCIS, Instructions for Form I-129F).
Filing carries real costs at every stage: the I-129F requires a $675 filing fee that covers the fiancé(e) and every K-2 child listed on it (8 CFR § 106.2), and each family member, including every K-2 child, separately pays a $265 DS-160 fee at the consulate (U.S. Department of State, visa fees).
Source: USCIS, Instructions for Form I-129F, cited above.
A REAL CASE
The Stepdaughter Who Missed the Cutoff by Months
A father called me a few months before his fiancée’s interview, worried about his fiancée’s 17-year-old daughter.
He didn’t realize the girl’s mother had married him — the stepfather — only a few months after the girl turned 18.
That single detail meant she did not meet the statutory definition of a stepchild, and no K-2 filing could fix it.
We told the family, before filing, that she would not qualify as a K-2 beneficiary, and helped them evaluate other family-based options instead.
What to Do Before You File
THE PATH FORWARD
A Straightforward Category, an Unforgiving Clock
On paper, the K-2 visa is one of the simpler nonimmigrant categories: no separate petition, no independent sponsor, and no extra government filing fee for the family.
In practice, its safety depends entirely on getting each child’s eligibility, documentation, and timing right well before the interview.
Our family immigration team reviews these details for every family we represent — see our fiancé(e) visa services before you file Form I-129F.
References
- INA § 101(a)(15)(K) – Cornell Law School Legal Information Institute
- INA § 101(b)(1), Definition of “Child” – Cornell Law School Legal Information Institute
- Form I-129F, Petition for Alien Fiancé(e) – USCIS
- Instructions for Form I-129F – USCIS
- Bringing Children, Sons and Daughters to Live in the United States as Permanent Residents – USCIS
- USCIS Fee Schedule, 8 CFR § 106.2 – Electronic Code of Federal Regulations
- Nonimmigrant Visa Fees – U.S. Department of State
Have Questions About a K-2 Case?
Talk to our family immigration team before you file the I-129F, not after.
Book a Consultation →This article is for informational purposes only and does not constitute legal advice. Consult a qualified immigration attorney before taking any action. · Last verified: August 25, 2026 · Reviewed by: Kathia Quirós, Immigration Attorney · GWP Immigration Law
