Quick answer
K-1 allows the foreign fiancé(e) of a U.S. citizen to enter the United States and marry that same petitioner within 90 days. The U.S. citizen first files Form I-129F with USCIS. After approval and NVC transfer, the beneficiary completes DS-160, a panel-physician medical exam and a consular interview. Both parties must be legally free to marry and generally must have met in person during the two years before filing.
Eligibility begins with the petitioner's citizenship
The petitioner must be a U.S. citizen. A lawful permanent resident cannot file for K-1. Both people must remain legally free to marry, and the intended marriage must be lawful in the U.S. state where it will occur.
K-1 is not for a couple already married or for marriage to another person after arrival. A married couple should examine the appropriate spousal route.
The in-person meeting rule
The couple generally must have met in person within the two years before Form I-129F is filed. Travel records, photographs and communications can document the relationship, but consistency matters more than volume.
USCIS may grant a narrow exception for extreme hardship to the U.S. citizen or strict cultural custom. Cost, distance and inconvenience should not be assumed to qualify.
USCIS, NVC and the consular case
The U.S. citizen files I-129F with USCIS, not with the embassy in Brazil. Approval establishes that the petition may proceed; it is not a visa decision. NVC assigns a case number and forwards the file to the processing post.
An approved petition is initially valid for four months. A consular officer can extend it when processing continues and the relationship and intent remain valid. Applicants should not treat the printed petition date as automatic case closure.
DS-160, civil records and medical examination
Each K-1 and eligible K-2 applicant files a DS-160 and pays the visa fee. The official list includes passport, birth record, termination of prior marriages, police certificates, photographs, relationship evidence and financial support material.
The medical examination must be completed by an authorized panel physician. Vaccinations are encouraged at this stage because they will be required for adjustment of status, even though the general K-1 issuance rule treats them differently.
Financial support and relationship review
The consular officer may request Form I-134. The official K-1 page distinguishes its support standard from Form I-864, which is filed later with adjustment of status after marriage.
The interview tests the genuine relationship and admissibility. Dates, meetings, prior marriages, family knowledge, employment and future plans should align across petition, DS-160 and evidence.
Admission, 90 days and K-2 children
The K-1 generally allows one admission during visa validity, up to six months from issuance. The 90-day marriage period starts on U.S. entry, not on approval or visa printing. The marriage must be to the original U.S. citizen petitioner.
Eligible children may seek K-2 after being listed correctly. The K-1 principal enters before or with them, and each child later files a separate adjustment application. Age and stepchild-relationship rules require careful planning.
The visa is one stage of a longer immigration route
K-1 issuance does not itself create permanent residence. After the qualifying marriage, the beneficiary files Form I-485 and the required support evidence with USCIS. Work and international travel during that period depend on separate authorization and current rules.
The financial form used at interview is not automatically the same one used after marriage. The State Department explains that I-134 may be requested for the visa, while I-864 is used with the later adjustment process.
If the relationship ends or the marriage does not occur within 90 days, the beneficiary should obtain individual legal advice before remaining or attempting another immigration route. Marriage to a different person does not satisfy the K-1 basis.
Applicants should budget for petition, visa, medical, document, travel and adjustment fees as separate stages. Paying one government fee does not cover the later filings.
Frequently asked questions
Can a green-card holder file K-1?
No. K-1 requires a U.S. citizen petitioner.
Can a married couple use K-1?
No. They should assess a spousal immigration route.
Must the couple meet in person?
Generally within two years before filing, subject to narrow statutory exceptions.
When do the 90 days start?
On the beneficiary's admission to the United States.
Can children receive visas?
Eligible listed children may apply for K-2 and later file separate adjustment applications.
Does I-129F approval guarantee K-1 issuance?
No. Consular processing, medical examination, documents and admissibility review remain required.
Official sources consulted
- https://www.uscis.gov/i-129f
- https://www.uscis.gov/family/family-of-us-citizens/visas-for-fiancees-of-us-citizens
- https://travel.state.gov/content/travel/en/us-visas/immigrate/family-immigration/nonimmigrant-visa-for-a-fiance-k-1.html
- https://travel.state.gov/content/travel/en/us-visas/Supplements/Supplements_by_Post/RDJ-Rio-de-Janeiro.html
Specialized consular assistance
MVA Vistos supports the Brazil consular stage with form and document review. USCIS, NVC, the consular post and CBP retain their separate legal decisions.
Editorial note
Informational content updated on September 3, 2026. MVA Vistos is a private, independent consular-assistance company. It is not part of, and does not represent, any government, embassy or consulate. Rules, fees and procedures may change, and the competent authority makes every final decision.
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