Fiancé (K-1) Visa

A K-1 is a non-immigrant visa that lets the fiancé(e) of a US citizen come to the United States in order to marry that citizen. It starts with Form I-129F, Petition for Alien Fiancé(e), filed by the citizen.

It is a two-stage route that is routinely mistaken for a one-stage route. The visa gets your fiancé(e) here and permits the wedding. It does not give permanent residence, and it does not give it automatically afterwards. Understanding where stage one ends is most of what goes wrong.

The 90 days

Read this before anything else on the page. USCIS: “K-1 and K-2 nonimmigrant status automatically expires after 90 days and cannot be extended.” Generally, your fiancé(e) and any children “must leave the United States at the end of the 90 days if you do not marry”.

Ninety days sounds generous until it has to hold a marriage licence, a ceremony, two sets of travelling relatives and whatever the county clerk requires. Couples who book the wedding before the visa is issued are the ones who run out of time. Couples who marry on day 85 and then start assembling the green card paperwork are the ones who spend months without work authorisation.

If the 90 days have already passed and you have not married, the route changes rather than ending: USCIS says the citizen “may file a Form I-130, Petition for Alien Relative” instead, which is the married route. Call before anyone makes a travel decision.

What USCIS requires

From USCIS's own eligibility list for the petitioner:

• “You are a U.S. citizen” — a permanent resident cannot file an I-129F;
• “You and your fiancé(e) are both legally free to marry (this means you both are legally able to marry in the United States and any previous marriages have been legally terminated by divorce, death, or annulment)”;
• you met in person within the two years before filing — waivers exist in specific circumstances, and they are argued, not assumed;
• you both intend to marry within 90 days of your fiancé(e)'s arrival.

The “legally free to marry” requirement is the quiet one. A divorce that was never finalised in another country, or a decree that cannot be produced, stops the petition. If there is a prior marriage on either side, locating the document is the first job, not the last.

Children

Unmarried children under 21 may be included on the I-129F and travel with or follow the K-1 holder, as K-2s. Their status runs on the same clock and expires with it. Children left off the petition at the start are the correction we are asked to make most often, and it is a slow one. List them all, including any you are not yet certain will travel.

You must marry the petitioner

This catches people who think of the visa as a general permission to be here. USCIS is unambiguous: “If you do not marry your U.S. citizen petitioner, you generally cannot apply for a Green Card based on any other Green Card eligibility category.” Marrying somebody else within the 90 days does not convert into anything. The limited exceptions that exist — for people granted U or T status, for instance — are separate routes with their own requirements, not a plan B.

After the wedding: the second application

Once you have married within the 90 days, your spouse applies for permanent residence from inside the United States on Form I-485. That is where the green card actually comes from, and it has its own evidence, its own medical examination and its own interview — our adjustment of status page sets that stage out in full.

If you have been married less than two years when it is approved, the card that arrives is conditional and valid for two years, and Form I-751 has to be filed in the 90 days before it expires to remove the conditions. On a K-1 route that is almost always the case, so plan for it from the start rather than discovering it later.

K-1, or marry first and file I-130?

Couples often have a genuine choice between bringing the fiancé(e) here to marry and marrying abroad, then petitioning as a spouse. They are not interchangeable. They differ in where the wedding happens, in what the person can do on arrival, in how long each stage takes and in what has to be proved at each stage. Neither is universally faster.

Joe compares them in K-1 versus CR-1: which path fits, with the married route set out in the CR-1 document checklist. The step-by-step for this route is the seven steps in the K-1 process.

How we handle these cases

We start with the two documents that most often stop a petition — proof that both of you are free to marry, and proof that you met in person within the two years before filing — and we check the evidence of the relationship before anything is filed rather than after an officer asks for it. Then we plan the 90 days backwards from the wedding date, and the I-485 forwards from it. Joe's pre-filing review is described in the fiancé visa document review, and the official page is USCIS's Visas for Fiancé(e)s of U.S. Citizens.

Consultations are free and cases are taken in Spanish. Call 630.928.0100 or book a time online. Related: adjustment of status for a spouse, all immigration services, and about Joe.

Nothing on this page is legal advice about your situation, and reading it or contacting the firm does not create an attorney–client relationship. Requirements described here were checked against USCIS in October 2026; immigration law changes often.