To apply for a K-1 fiancé(e) visa, you, the U.S. citizen, file Form I-129F with USCIS. Once it is approved, the case goes to the National Visa Center and then to a U.S. embassy or consulate, usually the one where your fiancé(e) lives, for a visa interview. With the visa, they travel to the U.S., you marry within 90 days, and then your new spouse applies for a Marriage Green Card.
That’s five steps and three government agencies: USCIS, the State Department, and Customs and Border Protection. Here is what happens at each one.
Before You Start: Is the K-1 For Me?
The K-1 is only for couples who plan to marry in the United States. Before filing, check that:
- The person filing is a U.S. citizen. Green card holders cannot use the K-1.
- You are both legally free to marry, with any earlier marriages ended by divorce, annulment, or death.
- You have met in person at least once in the 2 years before filing. A waiver is possible in limited cases.
- You intend to marry within 90 days of your fiancé(e)’s arrival.
If you have already married, plan to marry abroad, or your fiancé(e) already lives legally in the U.S., the K-1 is not the right tool. Our K-1 fiancé(e) visa page covers these requirements in more detail.
Step 1: The I-129F petition (USCIS)
You, the U.S. citizen, file Form I-129F, the Petition for Alien Fiancé(e). It asks USCIS to recognize your relationship. Along with the form, you send evidence that you’re eligible, such as proof of your U.S. citizenship, of your in-person meetings, of your intent to marry, and proof of any prior divorces.
If USCIS approves your I-129F, then the file goes to the State Department’s National Visa Center.
If your fiancé(e) has unmarried children under 21 who will come too, name them on the I-129F. Children who aren’t named on the petition can’t get K-2 visas.
Step 2: The National Visa Center and the U.S. Consulate (State Department)
The National Visa Center sends the approved petition to the U.S. embassy or consulate where your fiancé(e) will apply, usually the one where they live. The consulate tells you when the interview is scheduled.
Before the interview, your fiancé(e) completes the online visa application and a medical exam with a doctor approved by the embassy. You provide financial support documents to show they won’t need public assistance.
At the interview, the consular officer decides whether the relationship is genuine and whether your fiancé(e) qualifies. If approved, the K-1 visa is valid for up to 6 months, for a single entry.
Step 3: Arrival at the Border (CBP)
Your fiancé(e) travels to the U.S. while the visa is still valid. A visa doesn’t guarantee entry: the officer at the airport or border makes the final decision to admit them. Children on K-2 visas can travel with your fiancé(e) or later, but not before.
Step 4: The Wedding, Within 90 days
The 90 days start on the date of entry and can’t be extended. The marriage has to be to the U.S. citizen who filed the petition.
Your fiancé(e) can ask for a work permit right after arriving by filing Form I-765. A permit requested this way only lasts until the end of those 90 days. A permit requested later, together with the green card application, is not tied to that limit.
If the wedding doesn’t happen, your fiancé(e) has to leave the United States. Staying past the authorized period can carry serious consequences for any future immigration case.
Step 5: After the Wedding, the Marriage Green Card
Once you’re married, your spouse applies for permanent residence with Form I-485, adjustment of status, without leaving the country. USCIS usually schedules an interview with both of you.
If the marriage is less than 2 years old when the green card is approved, which is the usual case after a K-1, the first card is conditional and valid for 2 years. In the 90 days before it expires, you file Form I-751 together to remove the conditions. The full green card process is explained on our marriage green card page.
K-1 or a Spousal Visa?
The alternative is to marry abroad and then apply for an immigrant visa for your spouse through consular processing. With that route your spouse arrives already as a permanent resident, but you marry first and live apart. With the K-1, you’re together in the U.S. for the wedding and the green card application. We often recommend the K-1 because it can reunite couples sooner, although which route is faster depends on current processing times and your situation.
USCIS publishes current processing times for the I-129F on its Check Processing Times page. Timelines change, so check there instead of relying on figures you read online.
Mistakes That Delay Your K-1
- Weak proof of the in-person meeting. Airline tickets and boarding passes, Passport Stamps, Travel Itineraries, Photographs. All these are a must.
- Planning the wedding too close to day 90. Getting a marriage license can take time, so leave some room.
- Undisclosed past issues. Earlier visa refusals, overstays or criminal records can matter. Some can be fixed with a waiver. All of them should be disclosed and dealt with before the interview, not discovered at it.
Frequently asked questions
Who can file for a K-1 fiancé(e) visa?
Only U.S. citizens. Green card holders cannot petition for a fiancé(e), though they can petition for a spouse after the wedding.
How long is the K-1 visa valid?
Up to 6 months for a single entry. After entering, you have 90 days to marry.
Can my fiancé(e) work in the U.S. on a K-1 visa?
Yes, after applying for a work permit with Form I-765. A permit requested right after arriving ends 90 days after entry; one requested with the green card application after the wedding does not.
Can my fiancé(e)’s children come too?
Yes, if they are unmarried, under 21, and named on the I-129F. They come on K-2 visas and can apply for green cards after the wedding.
Does the K-1 visa give my fiancé(e) a green card?
Not directly. After you marry, your spouse applies for the green card with Form I-485.
Talk to an attorney about your K-1 case
Each K-1 case depends on your history together and on your fiancé(e)’s immigration record. At Serrano Immigration Law, you work directly with Attorney Miguel A. Serrano from the petition through the green card.
Schedule your free, confidential consultation or call 703-898-8401. Se habla español.
This article provides general information, not legal advice for your situation. Immigration rules change; the facts here were checked against USCIS sources in October 2026.