Updated November 11, 2026

K-1 visa application: step-by-step guide from Form I-129F to your green card

To start a K-1 visa application, a US citizen files Form I-129F by mail with US Citizenship and Immigration Services (USCIS) and proves the couple met in person within the last two years and intends to marry within 90 days of US entry. After USCIS approves the petition, the case moves to the Department of State for a consular interview, and an approved K-1 visa is valid for up to six months for a single entry. Once admitted by Customs and Border Protection (CBP), the couple has exactly 90 days to marry so the foreign spouse can apply for a green card on Form I-485.

How the K-1 visa application works from start to finish

The K-1 nonimmigrant visa, also called the fiance or fiancee visa, lets a US citizen bring a foreign partner to the United States to get married and apply for a green card. Three federal agencies handle your case in sequence: USCIS reviews the relationship petition, the US Department of State (DOS) conducts the visa interview abroad, and CBP inspects your fiance at the US port of entry.

At every stage of the process, government agencies run background and security checks on both the US citizen petitioner and the foreign beneficiary using fingerprints, names, and other biographic or biometric records. If you are already married, plan to get married outside the United States, or your partner already lives legally inside the United States, you cannot use a K-1 visa and must use the spousal green card path instead.

The five stages of the K-1 visa process (USCIS)

Comparing the K-1 fiance visa and the spousal green card

Before filing Form I-129F, consider whether the K-1 fiance visa or a spousal immigrant visa fits your timeline. The K-1 visa is intended only for couples who are not yet married and plan to hold their wedding inside the United States within 90 days of arrival.

If you are already legally married, or prefer to marry abroad before moving, you must file Form I-130 instead.

K-1 fiance visa versus spousal immigrant visa (USCIS)

Who qualifies for a K-1 fiance visa

USCIS sets four strict eligibility rules before you can file Form I-129F. Both partners must meet all four on the day the petition is mailed.

Only US citizens can file Form I-129F. Lawful permanent residents (green card holders) cannot petition for a fiance visa, though they can file Form I-130 for a spouse after getting married.

• US citizenship: The petitioner must be a US citizen by birth, naturalization, or acquisition.
• Legal freedom to marry: Both you and your fiance must be legally able to marry in the United States, and any prior marriages for either person must have ended legally through divorce, death, or annulment.
• 90-day intent to marry: You both must intend to marry each other within 90 days of your fiance's admission to the United States on the K-1 visa, with a bona fide intent to build a life together.
• Two-year in-person meeting: You and your fiance must have met in person at least once within the two-year period immediately before you file Form I-129F.

Waivers for the two-year meeting rule and multiple filings

If you have not met in person during the two years before filing, you must request a waiver in Part 2, Item 54 of Form I-129F. USCIS grants this exception only on two narrow grounds: if meeting in person would result in extreme hardship to you (the US citizen petitioner), or if it would violate strict and long-established customs of your fiance's foreign culture or social practice and you show that all traditional arrangements have been or will be met. Evidence can include medical records, statements from religious leaders, or proof of immediate danger.

Under the International Marriage Broker Regulation Act (IMBRA), you also need a multiple-filer waiver in Part 3 of Form I-129F if you previously filed Form I-129F petitions for two or more fiance beneficiaries, or if you had a Form I-129F approved and less than two years have passed since that prior petition's filing date. USCIS offers three waiver categories depending on your record: a General Waiver (if you have no violent criminal convictions), an Extraordinary Circumstances Waiver, or a Mandatory Waiver (for applicants who were subjected to battery or extreme cruelty). Once a petitioner has had two Form I-129Fs approved and files another less than 10 years after the first filing date, USCIS notifies both the petitioner and the beneficiary of the prior approvals.

Step 1: Filing Form I-129F with USCIS

You start the application by completing Form I-129F (edition 01/20/25, OMB No. 1615-0001) and mailing the paper package to the USCIS Dallas Lockbox. Make sure every page of your printout shows the same 01/20/25 edition date and page numbers at the bottom, and sign Part 5 in handwritten ink (or submit a photocopy or scan of your original handwritten ink signature). USCIS rejects unsigned forms or forms with a typed or stamped signature.

For US Postal Service (USPS) mail, send your package to USCIS, Attn: I-129F, P.O. Box 660151, Dallas, TX 75266-0151. For FedEx, UPS, or DHL deliveries, send it to USCIS, Attn: I-129F (Box 660151), 2501 South State Highway 121 Business, Suite 400, Lewisville, TX 75067-8003. Clip Form G-1145 to the front page if you want a text or email when the lockbox accepts your package.

Check the current filing fee on USCIS Form G-1055 (edition 10/26/26) before mailing. When paying by mail, you can pay by credit, debit, or prepaid card using Form G-1450, or directly from a US bank account using Form G-1650 for ACH transactions (unless you qualify to submit Form G-1651 for a paper payment exemption).

• Proof of US citizenship: A copy of your US birth certificate, Certificate of Naturalization, Certificate of Citizenship, Form FS-240 Consular Report of Birth Abroad, or a valid, unexpired US passport or passport card issued with at least a five-year validity period.
• Proof prior marriages ended: Copies of final divorce decrees, annulment orders, or death certificates issued by a civil authority for every prior marriage of either partner.
• Passport-style photos: One color 2-by-2-inch photo of you and one of your fiance, taken within 30 days of filing, on a white or off-white background. Lightly print the person's name and A-Number (if any) on the back with a pencil or felt pen.
• Statements of intent to marry: Signed statements from both you and your fiance confirming your mutual intent to marry within 90 days of the beneficiary's US entry.
• Proof of in-person meeting: Written statements describing your meeting, plus copies of airline tickets, passport stamps, or dated photos from the two years before filing.
• Form I-94 and legal name change records: Your beneficiary's Form I-94 number and expiration date if they ever visited the US, plus marriage certificates, adoption decrees, or court orders for any legal name changes.
• Certified English translations: For any document in a foreign language, attach a full English translation with a signed certification from the translator stating the translation is complete and accurate and that they are competent to translate, including their printed name, signature date, and contact details.

How to complete all 8 parts of Form I-129F without a lockbox rejection

USCIS automatically rejects any Form I-129F that leaves key fields blank. Specifically, the lockbox checks Part 1 for the classification sought, your family name, your mailing address, and your date of birth, and Part 2 for the classification sought, your beneficiary's family name, and their date of birth. Type or print legibly in black ink, write N/A when a question does not apply, and write None when a numeric answer is zero.

Never mail digital media or non-paper items such as thumb drives, CD-ROMs, DVDs, or musical greeting cards with batteries or chips, and never send original civil documents unless specifically requested, because USCIS may destroy unrequested originals.

• Part 1 (Information About You): Enter your biographic details, Social Security number, and classification sought. List five years of physical addresses and employment, information about your parents and prior marriages, and any earlier Form I-129F filings.
• Part 2 (Information About Your Beneficiary): Provide your fiance's full legal name, date of birth, five-year address and work history, and parent details. List any prior marriages, all children, and the intended US residential address.
• Meeting Details and IMBRA (Part 2): Describe your in-person meeting during the past two years in Item 54. Disclose whether you met through an International Marriage Broker. If yes, attach the signed consent form.
• Criminal Disclosures and Waivers (Part 3): Disclose any specified criminal history or restraining orders. You must provide certified police and court records even for sealed or expunged offenses. Request an IMBRA multiple-filer waiver here if applicable.
• Signatures and Certifications (Parts 4 to 8): Complete your physical description in Part 4. The petitioner must sign Part 5 in ink. Complete Parts 6 and 7 if using an interpreter or preparer, and use Part 8 for additional information.

Step 2: National Visa Center, Form I-134, and the consular interview

Once USCIS approves your Form I-129F, it sends the approved petition to the Department of State's National Visa Center (NVC). The NVC creates a case file and forwards it to the US Embassy or Consulate where your fiance lives. Naming a consulate outside your fiance's country of residence on Form I-129F does not guarantee that post will accept the case.

The embassy notifies you when the visa interview is scheduled. Your fiance applies for the K-1 visa and brings the required forms and supporting evidence to the interview. To show your fiance will not rely on public funds during their temporary stay, the sponsor completes Form I-134, Declaration of Financial Support (edition 01/20/25), and attaches documentation of sufficient income or financial resources. You must submit a separate Form I-134 for each beneficiary, and because you sign Form I-134 under penalty of perjury with your full name, it does not need to be notarized.

At the interview, the consular officer decides whether your fiance qualifies and whether your relationship is genuine. If approved, the K-1 visa is valid for up to six months for a single entry into the United States. If the officer does not find the relationship to be bona fide, the Department of State refuses to issue the visa and returns the Form I-129F to USCIS, where an expired petition is allowed to remain expired (though you may file a new Form I-129F).

• Have your relationship timeline ready: Know the exact dates and places of your in-person meetings, how you met, and if you met through an International Marriage Broker, make sure you included the signed consent form.
• Match every detail on Form I-129F: The consular officer has your petition, including prior marriage termination dates, five-year work histories, and any IMBRA criminal disclosures.
• Bring financial support evidence: Signed Form I-134 with supporting income or asset records and certified English translations for any foreign-language documents.

Step 3: CBP inspection, Form I-94, and the 90-day marriage rule

Holding a K-1 visa allows your fiance to travel to a US port of entry and request admission while the visa is valid, but it does not guarantee entry. A CBP officer conducts the inspection at the border or airport and makes the final decision to admit your fiance.

After admission, CBP records your fiance's arrival electronically rather than issuing a paper stub. Print a paper copy of the electronic Form I-94 from the CBP I-94 website or the CBP Link mobile app right away, because you will need it to prove lawful inspection and admission when applying for a green card. Since May 2019, CBP's 11-character I-94 numbers use an alphanumeric format of 9 digits, a letter in the 10th position, and a digit in the 11th position.

Your 90-day clock starts on the date of admission. K-1 and K-2 status automatically expires after 90 days and cannot be extended, and K visa holders cannot apply to change to another nonimmigrant status inside the United States (except for T or U status for qualifying crime or trafficking victims). If you do not marry within 90 days, your fiance and any K-2 children must leave the United States or face removal and future immigration bars. If you marry the original US citizen petitioner after the 90-day deadline passes, you can no longer adjust status based on the K-1 admission alone and must file Form I-130, Petition for Alien Relative.

Step 4: Work authorization (Form I-765) and adjustment of status (Form I-485)

A K-1 visa holder has two ways to apply for work authorization on Form I-765, and the practical difference is significant. If your fiance files Form I-765 immediately upon entry before marrying, the permit is valid for only 90 days from arrival and cannot be extended. In practice, because USCIS processing often takes months, a pre-marriage 90-day work card frequently arrives with little or no validity remaining.

Waiting until after the wedding to submit Form I-765 concurrently with Form I-485 avoids this issue. Work authorization issued under a pending adjustment of status application is valid for one year and can be renewed in one-year increments while the green card is pending. During this period, the foreign spouse must remain inside the United States until Advance Parole (Form I-131) is approved, because traveling abroad without Advance Parole generally abandons Form I-485.

Once you marry within the 90-day window, your spouse is treated as an immediate relative of a US citizen, meaning an immigrant visa number is immediately available, and files Form I-485 to adjust status to lawful permanent resident. Both spouses usually attend a USCIS interview. If you have been married for less than two years on the day USCIS approves Form I-485, your spouse receives a two-year conditional green card under INA 216, and you must file Form I-751, Petition to Remove Conditions on Residence, during the 90 days before that two-year card expires.

• Form I-485 package checklist for a K-1 spouse: Completed and signed Form I-485 with the required filing fee.
• Petition and marriage proof: Copy of the Form I-797 Approval Notice for Form I-129F and a copy of your civil marriage certificate.
• Identity and admission records: Two passport-style photos, copy of government-issued photo ID, copy of birth certificate, copy of passport page with the K-1 visa and admission stamp, and a printout of the electronic Form I-94.
• Financial sponsorship: Form I-864 (or Form I-864EZ, if eligible), Affidavit of Support Under Section 213A of the INA.
• Medical and vaccination record: Form I-693 or partial Form I-693. If you completed an overseas medical exam before arriving on your K-1 visa, you may not need another full exam, but you must still prove compliance with vaccination requirements.
• Waivers and court records (if applicable): Certified police and court records for any arrests or convictions, plus Form I-601, Form I-212, or Form I-612 if any inadmissibility or J-1 foreign residence rules apply. A Form I-601 waiver granted with your K-1 visa remains valid only if you married the original Form I-129F petitioner.

Bringing children on K-2 derivative visas

If your fiance has unmarried children under age 21, those children can come to the United States on K-2 nonimmigrant visas. You do not file a separate Form I-129F petition for a child, but you must list every child's name and details on your Form I-129F.

To be admitted at the border as a K-2 nonimmigrant, the child must remain unmarried and under 21. K-2 children can travel together with the K-1 parent or follow to join later, as long as they do not travel to the United States before the K-1 parent.

If you and the K-1 parent marry within 90 days of the parent's US entry, each K-2 child can apply for a green card by filing their own Form I-485 at the same time as, or after, the K-1 parent, provided the child stays unmarried.

Practice example

How and when did you and your fiance meet in person, and what are your wedding plans within 90 days of arriving in the United States?

Give the exact dates and cities of every in-person meeting from the two years before your partner filed Form I-129F, and make sure those dates match Part 2, Item 54 of the petition as well as the airline boarding passes and passport entry stamps in your folder. If you first connected online, explain clearly whether it was a general dating app or an International Marriage Broker, and confirm that any required written consent form was included with the petition. Then state your concrete plan to marry within 90 days of entering the United States, naming the city and state where you will live (matching Part 2, Item 45 of Form I-129F) and whether you are planning a civil ceremony or a larger wedding. Keep your signed statements of intent to marry, proof that any prior marriages for either of you were legally terminated by divorce, annulment, or death, and your partner's signed Form I-134 Declaration of Financial Support with income records ready to hand over if the officer asks.

The consular officer is verifying two statutory K-1 requirements at the window: that you physically met within two years before Form I-129F was filed and that your relationship and 90-day marriage plan are bona fide rather than for an immigration benefit.

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.