Updated November 12, 2026

K-1 visa application: requirements, Form I-129F instructions, and the 5-step process to a green card

A K-1 visa application lets a U.S. citizen bring a foreign fiancé to the United States to get married within 90 days of admission, according to U.S. Citizenship and Immigration Services (USCIS). The process starts when the U.S. citizen mails Form I-129F to the USCIS Dallas lockbox, moves to a State Department embassy or consulate for a single-entry visa valid for up to 6 months, and leads to a Form I-485 green card application after the wedding. Both partners must be legally free to marry and must have met in person within the 2 years before filing, unless they qualify for a waiver.

Who qualifies for a K-1 fiancé visa

Before assembling a K-1 visa application packet, make sure the fiancé category fits your marital status and location. Under USCIS rules, couples who are already married, plan to marry outside the United States, or have a foreign fiancé who already resides legally in the United States are ineligible for a K-1 visa and use the spousal green card process instead.

To sponsor a fiancé for a K-1 nonimmigrant visa, you and your partner must meet four requirements:

• U.S. citizen petitioner: Only a U.S. citizen may file Form I-129F for a fiancé. Lawful permanent residents (green card holders) cannot file a fiancé petition.
• Legally free to marry: Both partners must be legally able to marry in the United States when filing, with every prior marriage legally ended by a final divorce decree, annulment order, or death certificate.
• Bona fide intent to marry within 90 days: Both partners must intend to marry each other within 90 days of K-1 admission to establish a genuine life together, not solely to obtain an immigration benefit.
• In-person meeting within 2 years: You must have met physically in person at least once during the 2-year period immediately before filing Form I-129F. You may request a waiver only by proving with evidence (such as medical records, statements from religious leaders, or proof of immediate danger) that meeting in person would cause extreme hardship to the U.S. citizen petitioner or violate strict, long-established customs of your fiancé's foreign culture or social practice.

The 5 stages of a K-1 visa application

A K-1 case moves in order through USCIS, the U.S. Department of State (DOS), and U.S. Customs and Border Protection (CBP). At every stage, agencies may run background and security checks on both partners using fingerprints, names, and biographic or biometric records across national security and Federal Bureau of Investigation (FBI) criminal history databases.

USCIS processes Form I-129F petitions in the order received, and timelines vary by case and embassy workload. Check current wait times on the USCIS Check Case Processing Times page and track your receipt on Case Status Online. To cancel a petition, mail a signed written withdrawal request to USCIS before approval, or contact the State Department after approval. Withdrawal is barred once your fiancé is admitted in K status.

Five-stage K-1 visa roadmap from petition to permanent residence

Step 1: Form I-129F instructions, checklist, and where to file

Your K-1 visa application opens with Form I-129F, Petition for Alien Fiancé(e). Print every page from the same form edition with the edition date and page numbers visible at the bottom, or USCIS may reject your filing. Type or print legibly in black ink, write N/A when a text item does not apply, and write None when a numeric answer is zero.

Avoid automatic lockbox rejections by checking signatures and mandatory fields. USCIS rejects any unsigned form (a stamped or typed name is invalid, though a clear photocopy or scan of an original handwritten ink signature is accepted) and rejects forms missing the classification sought, family name, petitioner mailing address, or date of birth in Part 1 or Part 2. Parts 1 and 2 ask for 5-year address and employment histories for both partners, parents' details, and any prior marriages. You also list your citizenship details, prior Form I-129F filings, and every state and country you have lived in since age 18. For your fiancé, include all children, the intended U.S. address, and their name and foreign address in their native alphabet if it does not use Roman letters. Finish Part 2 with your 2-year meeting description, any International Marriage Broker details, and the U.S. embassy or consulate where your fiancé will apply. Parts 3 through 8 cover criminal and multiple-filer disclosures, petitioner biographic details, signatures, interpreter or preparer certifications (attach Form G-28 if represented), and signed, dated continuation sheets.

Form I-129F cannot be filed online or adjudicated at USCIS international offices. For U.S. Postal Service mail, send it to USCIS, Attn: I-129F, P.O. Box 660151, Dallas, TX 75266-0151. For FedEx, UPS, and DHL deliveries, send it to USCIS, Attn: I-129F (Box 660151), 2501 South State Highway 121 Business, Suite 400, Lewisville, TX 75067-8003. Send legible photocopies unless originals are specifically requested (USCIS may destroy unrequested originals), and leave out thumb drives, CDs, DVDs, items with chips or batteries, DNA samples, and graphic intimate photos. Use our team's pre-mailing checklist:

• Form G-1145 clipped to page one for email or text lockbox acceptance alerts, plus the correct fee verified on Form G-1055 (pay mail filings by card with Form G-1450, U.S. bank transfer with Form G-1650, or attach Form G-1651 if exempt from electronic payment, and never mail cash).
• Completed Form I-129F with the petitioner's handwritten signature in Part 5.
• Proof of U.S. citizenship: a copy of your U.S. birth certificate, Certificate of Naturalization, Certificate of Citizenship, Form FS-240 Consular Report of Birth Abroad, consular officer statement, or unexpired U.S. passport or passport card issued with at least a 5-year validity period.
• Proof every prior marriage ended for both partners (final divorce decrees, annulment orders, or death certificates) plus any legal name-change records.
• Two color passport-style photos taken within 30 days of filing (one of each partner), measuring 2 by 2 inches on a glossy white to off-white background with head height between 1 and 1 3/8 inches and eye height between 1 1/8 and 1 3/8 inches, with name and any A-Number written lightly on the back in pencil or felt pen.
• Signed statements from both partners confirming mutual intent to marry within 90 days of K-1 admission.
• Two-year in-person meeting evidence: passport stamps, airline tickets, dated photos together, and a written statement describing when and where you met (or waiver evidence).
• Certified English translations for every foreign-language document, including the translator's signed statement of accuracy and competence, printed name, date, and contact information.

IMBRA criminal disclosures, marriage brokers, and multiple-filer waivers

Part 3 of Form I-129F enforces the International Marriage Broker Regulation Act (IMBRA). You must disclose any temporary or permanent civil or criminal protection or restraining order tied to IMBRA's specified crimes. You must also report any arrest or conviction for domestic violence, sexual assault, child abuse or neglect, dating violence, elder abuse, or stalking. The same rule covers homicide, murder, manslaughter, rape, abusive sexual contact, sexual exploitation, incest, torture, trafficking, peonage, hostage-taking, involuntary servitude, slave trade, kidnapping, abduction, unlawful criminal restraint, and false imprisonment. Finally, you must report three or more alcohol or controlled-substance convictions that did not come from a single act. Submit certified court and police records even if your record was sealed, expunged, or cleared, plus certified dispositions for any other arrest, citation, charge, conviction, fine, or imprisonment in any country (excluding minor non-alcohol, non-drug traffic tickets below the form's fine threshold). Upon approval, USCIS forwards your petition and criminal background records to DOS to disclose to your fiancé while keeping any victim's name confidential.

If you met through an International Marriage Broker (a business charging fees for dating or matchmaking primarily between U.S. residents and foreign nationals, excluding qualifying cultural or religious non-profits and mainstream dating platforms charging comparable rates to all users), attach the signed written consent form the broker obtained from your fiancé, with a certified English translation if needed. You must also request an IMBRA multiple-filer waiver in Part 3 if you previously filed Form I-129F for two or more fiancés, or had a prior Form I-129F approved less than 2 years before filing:

• General Waiver (Part 3, Item 5.a): Available if you have never been convicted of a violent criminal offense against a person, supported by evidence explaining prior filings (such as records of a prior fiancé's death or incapacity).
• Extraordinary Circumstances Waiver (Part 3, Item 5.b): Required if you were ever convicted of a violent offense against a person, backed by police and court records plus proof of rehabilitation, community ties, or exemplary military service.
• Mandatory Waiver (Part 3, Item 5.c): Available if a violent offense occurred while you were battered or subjected to extreme cruelty by a family member or intimate partner, were not the primary perpetrator, and acted in self-defense, violated a protection order meant for you, or committed a connected offense without serious bodily injury.
• Ten-year tracking database: After approving a second Form I-129F, USCIS logs the petitioner in a tracking database and notifies both partners of prior approvals if another petition is filed less than 10 years after the first Form I-129F filing date.

Step 2: NVC routing, Form I-134 support, and the consular interview

Once USCIS approves Form I-129F, it sends the petition to the DOS National Visa Center (NVC), which forwards it to the U.S. embassy or consulate where your fiancé will apply (generally where your fiancé lives, since posts outside their country of residence accept cases at their discretion). The embassy notifies you when the interview is scheduled, and your fiancé brings the required visa forms, civil documents, and medical exam records.

Financial sponsorship rules differ between the visa interview and green card adjustment. For the temporary K-1 stay, petitioners provide Form I-134, Declaration of Financial Support, with documentation of sufficient income or financial resources. File a separate Form I-134 for each beneficiary (one for your fiancé and one for each K-2 child). Because Form I-134 is signed under penalty of perjury, it does not need to be notarized. After the U.S. wedding, Form I-485 requires Form I-864, Affidavit of Support Under Section 213A of the INA (or Form I-864EZ if eligible).

If the consular officer grants the K-1 visa, it is valid for up to 6 months for a single entry. If the officer does not find the relationship bona fide, DOS refuses the visa and returns Form I-129F to USCIS, which generally lets an expired returned petition remain expired (though you may file a new Form I-129F). Prepare to answer questions honestly on four topics:

• How your relationship began and grew: When and where you met in person within the 2 years before filing, whether a marriage broker introduced you, and how you stay in touch.
• Prior marriages and family background: Proof any prior marriages ended legally, plus knowledge of each other's family, children, and any prior Form I-129F petitions.
• Petitioner's daily life and disclosures: Your U.S. partner's job, city, and any criminal history or protection orders disclosed under IMBRA.
• Your 90-day wedding plan: Where you will live in the United States and your plan to marry within 90 days of entry, backed by updated signed intent-to-marry statements.

Steps 3 and 4: Port of entry, electronic Form I-94, and a worked 90-day plan

A K-1 visa lets your fiancé travel to a U.S. port of entry during its validity period to request admission, where a CBP officer makes the final entry decision. CBP issues electronic Form I-94 Arrival/Departure Records automatically at air, sea, and land ports rather than paper stubs (requesting a paper Form I-94 requires secondary inspection). Download and print your electronic Form I-94 right after arrival via Get Most Recent I-94 on the CBP website or the CBP Link mobile app, and verify K-1 status and your exact 90-day expiration date. CBP operates more than 70 Deferred Inspection Sites across the United States and its territories to correct arrival documentation errors.

K-1 and K-2 status automatically expires after 90 days and cannot be extended. If you do not marry within 90 days, your fiancé and any K-2 children must depart the United States or face immigration law violations, potential removal (deportation), and harm to future immigration eligibility. If you marry the petitioner after day 90, K-1 adjustment no longer applies and the U.S. citizen must file Form I-130, Petition for Alien Relative. Without marriage to the original Form I-129F petitioner, a K-1 entrant generally cannot adjust status inside the United States unless granted U nonimmigrant status for crime victims or T nonimmigrant status for trafficking victims.

Example 90-day timeline written by our team for an invented couple: Maya enters on a K-1 visa on May 1 (Day 1) and prints her electronic Form I-94 on May 3 showing her authorized stay ends July 29 (Day 90). Between May 10 and June 12, she and her U.S. citizen fiancé get their county marriage license, hold a civil ceremony on June 12 (Day 43), and request certified copies of their registered marriage certificate right away. By July 15, they assemble and submit Form I-485, Form I-864, Form I-693 vaccination proof, Form I-765, and Form I-131 before her July 29 K-1 expiration.

Step 5: Form I-485 green card filing, work permits, and travel rules

Marrying the Form I-129F petitioner within 90 days classifies your spouse as an immediate relative with an immigrant visa immediately available to file Form I-485, Application to Register Permanent Residence or Adjust Status, by mail or online if eligible. Under USCIS rules for Form I-485 filings after April 1, 2024, Form I-765 (work permit) and Form I-131 (Advance Parole travel document) are no longer bundled at zero extra cost and each requires a separate fee listed on Form G-1055, Fee Schedule. Confirm every exact fee on Form G-1055 before submitting, because USCIS rejects packages with incorrect payments.

A K-1 entrant may file Form I-765 right after U.S. arrival, though that initial permit expires at the end of the 90-day K-1 stay. Filing Form I-765 together with Form I-485 after marriage grants a 1-year Employment Authorization Document extendable in 1-year increments. Do not leave the United States while Form I-485 is pending without an approved Form I-131 Advance Parole document (select Part 1, Item 5.A.), because departing without Advance Parole generally abandons Form I-485. Report any U.S. address change within 10 days on Form AR-11 online. If married less than 2 years when Form I-485 is approved, USCIS issues a 2-year conditional green card under INA 216, requiring Form I-751 during the 90 days before card expiration. Include these core items in a K-1 spouse's Form I-485 packet:

• Signed Form I-485 with the correct filing fee verified on Form G-1055.
• Form I-797 Approval Notice for Form I-129F and a copy of your civil marriage certificate proving marriage within 90 days of K-1 admission.
• Copies of your birth certificate, government photo ID, passport K-1 visa page, passport U.S. admission stamp page, and printed electronic Form I-94, plus two passport-style photographs.
• Form I-864 (or Form I-864EZ if eligible) completed by your U.S. citizen spouse.
• Form I-693 vaccination record (if you completed a medical exam abroad before K-1 entry, you may not need another full exam, though vaccination compliance proof is required. Mail filings keep the civil surgeon's envelope sealed, while online filers open it to upload and retain the original envelope for the interview).
• Optional Form I-765 and Form I-131 with separate fees, plus any certified court records or waivers (an approved K-1 Form I-601 waiver stays valid once married to the Form I-129F petitioner).

Bringing children on K-2 derivative visas

An unmarried child under 21 of your foreign fiancé may qualify for a K-2 nonimmigrant visa without a separate Form I-129F petition. List every child of your beneficiary in Part 2 of Form I-129F when filing, and submit a separate signed Form I-134 for each K-2 child at the consular stage.

To be admitted as a K-2 nonimmigrant, the child must remain unmarried and under 21 at admission. K-2 children may travel with the K-1 parent or follow later, though never before the K-1 parent enters. Once you marry the K-1 parent within 90 days of the parent's admission, each unmarried K-2 child is treated as an immediate relative and may file Form I-485 with or after the K-1 parent.

Practice example

How did you and your fiancé meet in person, and what are your plans to marry within 90 days of arriving in the United States?

Start by naming the exact dates and city where you met in person during the two years before your fiancé filed Form I-129F, making sure those dates match Part 2, Item Number 54 of the petition and your passport entry stamps. If you first connected online, clarify whether it was a general site or an International Marriage Broker covered by IMBRA, and keep the signed broker consent form ready if applicable. Briefly mention later visits and how you communicate day to day without reciting a memorized speech. Finish with your plan for the 90-day window after U.S. admission, naming the city and state where you will live (matching Part 2, Item Number 45 of Form I-129F) and your planned ceremony timing. Have civil records, updated signed intent statements, photos, and your petitioner's signed Form I-134 with income proof organized to hand over if asked.

The consular officer checks whether your relationship is bona fide and satisfies both the two-year in-person meeting rule and the 90-day marriage rule. Specific dates and wedding plans that match Form I-129F build credibility, whereas an unconvinced officer will refuse the visa and return the petition to USCIS.

This is interview practice, not legal advice. For questions about your own case, talk to an immigration attorney. Visaful is not affiliated with the U.S. government or the Department of State.