K-1 Fiancé Visa Process: How to Apply, Step by Step

Immigration · 27 July 2026

A K-1 visa lets the foreign fiancé of a U.S. citizen travel to the United States, marry within 90 days, and then apply for a green card without leaving. It is a nonimmigrant visa, but because it leads straight to permanent residence the applicant has to meet some of the requirements of an immigrant visa. This guide walks through the process in order, using the State Department’s and USCIS’s own instructions as they stand on October 22, 2026.

Who can use a K-1 visa

The petitioner must be a U.S. citizen; a permanent resident cannot file for a fiancé. Both of you must have been legally free to marry when the petition was filed and must stay that way, and the marriage must be legally possible in the state where it will take place. You must intend to marry within 90 days of the K-1 holder’s admission.

You must also have met in person at least once in the two years before filing. USCIS can waive that requirement where meeting would violate strict, long-established customs of the fiancé’s culture, or would cause extreme hardship to the U.S. citizen. If you are already married, this is the wrong visa; see K-1 versus CR1.

Step 1: file Form I-129F with USCIS

The U.S. citizen files Form I-129F, Petition for Alien Fiancé(e), with USCIS according to where the citizen lives. It cannot be filed at a U.S. embassy, a consulate or a USCIS office abroad. If the fiancé has unmarried children under 21 who will come too, list them on this petition; they apply for K-2 visas on the same approval and do not need separate petitions.

The petition has to show that the relationship is real. Useful evidence includes proof of the petitioner’s citizenship, photographs and travel records showing you together, communication records, statements from both of you about the relationship and your plans, and divorce decrees, annulments or death certificates ending any earlier marriage. A clear timeline usually says more than a stack of undated screenshots. Our document review guide goes through it in more detail.

Step 2: the National Visa Center

After USCIS approves the petition, it goes to the National Visa Center (NVC), which gives the case a number and sends it to the U.S. embassy or consulate where the fiancé lives, then mails the petitioner a letter when it has done so. The approved I-129F is valid for four months from approval, and a consular officer can extend it if visa processing is not finished in time.

Step 3: the visa application and documents

Once the case reaches the embassy, the fiancé applies online on Form DS-160 and prints the confirmation page for the interview. Each K applicant, including each child, applies separately and pays the visa application fee. The State Department lists what to bring to the interview:

• The DS-160 confirmation page.
• A passport valid for travel to the United States and for at least six months beyond the intended stay, unless a country agreement provides otherwise.
• A birth certificate.
• Divorce or death certificates for any previous spouse, of both the applicant and the U.S. citizen.
• Police certificates from the current country and from every country lived in for six months or more since age 16 (also for children aged 16 or older).
• The medical examination results.
• Evidence of financial support; the consular officer may ask for Form I-134.
• Two 2x2 photographs, and evidence of the relationship.

Documents not in English, or in the official language of the country where the fiancé applies, need certified translations with the translator’s statement that the translation is accurate and that they are competent to translate. Some embassies add their own instructions, so check the post’s page as well.

Step 4: financial support, now and later

At the interview the fiancé must show they are not likely to become a public charge, either through their own means or through the U.S. citizen’s support, and the officer may ask for Form I-134. The State Department is explicit that the stricter Form I-864 standard (125 percent of the federal poverty guidelines, the latest tax return and so on) does not apply at this stage; for the I-134 the sponsor’s income needs to reach 100 percent of the guidelines. The I-864 comes later, with the green card application after the wedding.

Step 5: the medical examination

Every K visa applicant, of any age, must be examined by a panel physician authorized by the embassy, which provides the list. Vaccinations are not required for the K visa itself, but they are required when adjusting to permanent residence after the marriage, so the State Department encourages applicants to complete them at the same examination.

Step 6: the interview

The consular officer may ask about how you met, how you keep in touch, the wedding plans, prior marriages and the petitioner’s work and home. Answer truthfully and consistently, and bring updated evidence if time has passed since the petition was filed. Before the interview the applicant should read the Rights and Protections pamphlet, which the officer summarizes, and K-1 applicants are given any criminal background information about the U.S. citizen that USCIS received while processing the petition. The interview can end in approval, refusal or further administrative processing. Our post on common interview mistakes covers the preparation side.

Step 7: travel and entry

If the visa is approved, the fiancé receives the passport with the K-1 visa and a sealed packet of documents that must not be opened; only the officer at the port of entry opens it. The K-1 allows a single admission within the visa’s validity, which is at most six months from issuance, and holding the visa does not by itself mean admission: U.S. Customs and Border Protection makes that decision at the border. Children with K-2 visas may travel with the K-1 holder or later, within one year of the K-1 visa’s issuance, but not before.

After arrival: the 90-day rule

You must marry within 90 days of the K-1 holder’s entry. According to USCIS, K-1 and K-2 status expires automatically after 90 days and cannot be extended; if the marriage does not happen, the fiancé and any children generally must leave or risk removal. The K-1 holder generally cannot get a green card on any basis other than marriage to the petitioner.

On arrival the K-1 holder may apply for a work permit on Form I-765, but a permit based on K-1 entry is valid only for the 90 days after entry. Filed together with the green card application, it is valid for a year and can be extended.

The green card: adjustment of status

After the wedding, the K-1 holder applies for permanent residence on Form I-485, and the U.S. citizen files the Form I-864 affidavit of support with it. Our adjustment of status page explains that process. K-2 children apply separately; they cannot be included on the parent’s application, they must remain unmarried, and the stepchild relationship with the U.S. citizen must have been created before the child turned 18.

Do not travel abroad while the application is pending unless you first have advance parole. Under 8 CFR 245.2(a)(4)(ii), leaving the United States is generally treated as abandoning the application, and K-1 holders are not among the statuses the rule excepts.

If you have been married for less than two years when USCIS approves the green card, it is conditional and valid for two years. To keep permanent residence, you file Form I-751 together in the 90 days before the card expires.

How long does the K-1 process take?

There is no honest single number. USCIS posts the status of the I-129F online, and once the embassy has the case, the State Department says the time varies from case to case. The common causes of delay are the ones you can control: instructions not followed carefully, incomplete or outdated information, and wrong postal addresses or phone numbers. Some cases also need administrative processing after the interview, which adds time.

How Michelotti & Associates can help

Michelotti & Associates helps couples in the Chicago area prepare K-1 petitions and the green card application that follows, from its office in Oak Brook, and works with clients by video. Earlier marriages, children traveling on K-2 visas, past visa refusals or a criminal record on either side can all change what a case needs, so raise them at the start. Call 630.928.0100, or read more on our fiancé visa page.

This article is general information about the law as of October 22, 2026, not legal advice about anyone’s case.

This article is general information, not legal advice about your situation. Reading it does not create an attorney–client relationship.