Guides / K-1 fiancé(e) petitions

K-1 fiancé(e) petitions: Form I-129F

Who can petition for a K-1 fiancé(e), what the I-129F asks for, the IMBRA disclosures, what happens after approval, the mistakes that sink petitions, and how Aion fills the form from the client's documents. Written for immigration attorneys, paralegals and DOJ-accredited representatives.

Last updated: 17 October 2026

This guide is general information for firms, not legal advice. Forms, fees and rules change, so check the linked USCIS and State Department pages before you file.

The petition at a glance

• Who petitions: a U.S. citizen only. The I-129F classifies a fiancé(e) as a K-1 nonimmigrant, so that the fiancé(e) can enter the U.S. to marry the petitioner and then pursue adjustment of status. Permanent residents cannot use it (I-129F instructions).
• Children: an unmarried child under 21 of a K-1 can apply for a K-2 visa to accompany or follow the parent. No separate petition is needed.
• The two core requirements: the couple must be legally free to marry and intend to marry within 90 days of the fiancé(e)'s admission, and they must have met in person within the two years before filing, unless an exception applies.
• The same form also covers K-3: a spouse of a citizen who is waiting for an I-130 to be approved. This guide covers K-1.
• Edition: the current edition is 01/20/25, and every page must show the same edition date (I-129F page). The fee is on the G-1055 fee schedule.
• Whose form it is: the petitioner signs it. The fiancé(e) is the beneficiary and is usually abroad, so much of the form is information about someone who is not in the room.

Eligibility in detail

• Free to marry: both parties must be legally free to marry. Any earlier marriage of either person must have been legally ended, and the petition needs evidence of that.
• Intent to marry within 90 days: of the fiancé(e)'s admission to the U.S. as a K-1.
• Met in person: within the two years immediately before filing. The petitioner can ask for an exception if meeting would violate strict and long-established customs of the fiancé(e)'s foreign culture or social practice, or would cause the petitioner extreme hardship. The request needs evidence, such as medical records or statements from religious leaders.
• IMBRA filing limits: the petitioner must request a waiver if they previously filed I-129Fs for two or more fiancé(e)s, or had an earlier I-129F approved and less than two years have passed since that petition was filed. USCIS cannot approve the petition unless the waiver is granted.

Source: I-129F instructions.

What the I-129F asks for

• About the petitioner: A-Number and Social Security number if any, names used, five years of addresses and employment, parents' details, any previous spouses and the date each marriage ended, how citizenship was obtained, any earlier I-129F filings, the ages of children under 18, and every place lived since age 18.
• About the beneficiary: names used, place of birth, marital status, five years of addresses and employment, parents' details, previous spouses, I-94 details if any, every child with country of birth and date of birth, the intended U.S. address, the current address abroad, and the name and address in the native alphabet where that is not Roman. It also asks for the consulate where the beneficiary will apply.
• The relationship: whether the couple met in person in the two-year window, a description of the meeting with evidence, and whether they met through an international marriage broker.
• Part 3 criminal history: protection or restraining orders and convictions for the crimes listed in the IMBRA section below, and any other arrests, citations or convictions other than minor traffic matters.
• Signatures: the petitioner's own signature in Part 5. A stamped or typed name is not accepted. A preparer or interpreter completes and signs their own sections.

IMBRA disclosures

The International Marriage Broker Regulation Act requires citizen petitioners to disclose protection or restraining orders and convictions for the crimes listed in Part 3 of the form. Those include domestic violence, sexual assault, child abuse, stalking, homicide, kidnapping, and at least three convictions for controlled substance or alcohol crimes not arising from a single act.

If USCIS approves the petition, it gives a copy to the State Department for the beneficiary, including the petitioner's disclosures and any criminal background information USCIS finds itself. The name and contact details of a protected person or victim stay confidential, but the beneficiary is told the relationship.

USCIS tracks multiple filings in a database. After a petitioner has had two I-129Fs approved, USCIS notifies both the petitioner and the beneficiary of the number of earlier approvals if another is filed less than 10 years after the first was filed. If the couple met through an international marriage broker, the petition needs the broker's details and a copy of the signed consent form the broker obtained from the beneficiary, with a certified translation if it is not in English.

Source: I-129F instructions.

Evidence to file

• Proof of the petitioner's U.S. citizenship: a U.S. birth certificate, certificate of naturalization or citizenship, FS-240, a valid, unexpired U.S. passport or passport card issued with a validity period of at least five years, or a consular statement.
• Termination of earlier marriages: a divorce decree, annulment or death certificate for any earlier marriage of either person.
• Photographs: one color passport-style photo of the petitioner and one of the beneficiary, each taken within 30 days of filing.
• Name changes: legal documents for any name that differs from the supporting evidence.
• Intent to marry within 90 days: evidence of the couple's mutual intention, which may include statements signed by both.
• The in-person meeting: a statement describing the circumstances, airline tickets, passport pages or other proof that they were together in the two-year window, or the exception request and its evidence.
• Foreign-language documents: a full English translation with the translator's signed certification.
• Representation: a G-28 if you represent the petitioner.

If a primary document is not available, the instructions ask for a statement from the civil authority saying so, then secondary evidence. Source: I-129F instructions.

After approval

1. USCIS to the National Visa Center. USCIS sends the approved I-129F to the State Department's National Visa Center, which forwards it to the U.S. embassy or consulate, usually where the fiancé(e) lives. The approval is valid for four months, and a consular officer can extend it if it expires before visa processing finishes (State Department).
2. Consular steps. Each applicant, including any K-2 child, completes their own DS-160, has a medical examination with an authorized panel physician, and attends a visa interview. Sequence and scheduling vary by post, so follow that embassy's instructions. If the consular officer does not find the relationship bona fide, the petition goes back to USCIS (USCIS).
3. The K-1 visa. If issued, it is valid for up to six months for a single entry. It does not guarantee admission, and a CBP officer decides at the port of entry.
4. Marriage within 90 days. After admission, the couple has 90 days to marry. The K-1 must marry the citizen who filed the I-129F. K-1 and K-2 status cannot be extended, and a fiancé(e) who does not marry the petitioner in time generally cannot apply for a green card on another basis (USCIS).
5. Adjustment of status. After the wedding, the spouse files an I-485. A K-1 who married the petitioner in the 90-day window always has an immigrant visa immediately available, so there is no Visa Bulletin wait (I-485 instructions). The filing includes a copy of the marriage certificate and the I-797 approval notice for the I-129F. The petitioner completes an I-864 affidavit of support, and the applicant submits an I-693, in full or in part. The I-693 page says a partial one applies to some K-1 and K-2 entrants, so check which you need.
6. Work and travel. A K-1 or K-2 can file an I-765 after admission under category (a)(6). It covers only the 90 days in K status and cannot be renewed. Filing an I-765 with the I-485 instead uses category (c)(9) (I-765 instructions). Leaving the U.S. without advance parole while the I-485 is pending means the application is treated as abandoned.
7. Conditional residence. If the marriage is less than two years old on the date permanent residence is granted, the green card is conditional for two years, and the couple files an I-751 in the 90 days before it expires (I-130 instructions).

The adjustment forms are the same bundle covered in Family-based green card and adjustment of status, including the 2026 changes to the I-485 and I-864 editions and to public charge.

Common mistakes

• Thin proof of the in-person meeting. The form asks for a description and evidence, and a petition with neither can be denied. If the couple did not meet, the exception request and its evidence have to be in the petition.
• No evidence of intent to marry. The instructions name statements of intent signed by both people as one form of proof.
• Missing the IMBRA multiple-filer waiver. A petitioner with two or more earlier fiancé(e) petitions, or a recent approval, needs a waiver, and USCIS cannot approve the petition without it.
• Incomplete Part 3. Arrests and convictions need certified court and police records, even if the records were sealed or expunged.
• Leaving out the broker consent form. If a marriage broker was involved, the signed consent form has to be attached.
• Gaps in the earlier marriage evidence. Both people's earlier marriages need a document showing how each ended.
• Photos taken outside the 30-day window, or only one of the two people photographed.
• Blank required fields or a missing signature. USCIS says missing required fields in Parts 1 and 2 will cause rejection, and an unsigned form is rejected (I-129F page). Write "N/A" or "None" where a question does not apply.
• Mixed or outdated editions. Pages from different editions can get a filing rejected (USCIS).
• Name mismatches. A name on the form that differs from the passport or certificate needs a legal name change document.
• After approval: missing the 90-day window, or marrying someone other than the petitioner. Any I-601 waiver from the K-1 process is valid only if the K-1 marries the petitioner.

Where firms lose time

Two sets of five-year histories

The form wants five years of addresses and employment for the petitioner and for the beneficiary, plus parents, earlier spouses and children. The beneficiary's documents are often in another language, and the form also asks for the beneficiary's name and address in the native alphabet when it is not Roman.

Proving the meeting

Boarding passes, passport stamps, photos and statements sit in different places. They have to be collected and matched to dates inside the two-year window.

Questions only the client can answer

The criminal history and protection order questions and the marriage broker questions are often answered in conversation rather than from a document. They need the attorney's attention before the form is signed.

How Aion handles an I-129F

1. Start an application in Aion and choose the I-129F. Your attorney or accredited representative details come from your firm profile.
2. Upload the client's documents as files, a folder or a .zip: both passports, the petitioner's proof of citizenship, divorce decrees, travel records, the client questionnaire and anything from a prior filing. Aion reads them into one summary and flags anything missing or contradictory.
3. Your team reviews and edits that summary before anything is filled. The original documents are deleted as soon as extraction succeeds, and everything else within 24 hours.
4. Aion fills the official, current-edition I-129F PDF field by field. Where the documents are silent, for example on the Part 3 criminal history questions, the field is flagged for the attorney instead of guessed.
5. Flagged fields are outlined in red on the PDF and listed in the app with a note. You can type the answer in the app or mark a value "correct as is" and download a corrected PDF, or edit in Acrobat.
6. The attorney reviews the petition, the petitioner signs, and your firm assembles the evidence and files. Aion never signs or files, and it never logs into myUSCIS or any USCIS account.

When the couple has married and the adjustment stage begins, pick the I-485, I-864, I-765, I-131 and I-693 together at the start of one application. The documents are read once and each form comes back as its own PDF, using one credit per form. Aion does not fill the State Department's DS-160 or the I-751.

What stays with your firm

• Advice on eligibility, the in-person meeting exception, IMBRA waivers and any inadmissibility issue.
• The client's answers to the criminal history and marriage broker questions.
• The evidence bundle, photos, the G-28 and the cover letter.
• Fees, signatures, the filing location and the filing itself.
• Guiding the couple through the consular process and the 90-day marriage deadline.

Worried about putting client data into an AI tool? Read Is it safe to use AI for US immigration forms? and our security summary. Comparing tools? See Aion vs Docketwise.

Sources: USCIS: Form I-129F · I-129F instructions · USCIS: Visas for fiancé(e)s · USCIS: Green card for a fiancé(e) · State Department: K-1 visa · I-485 instructions · Fee Schedule (G-1055). Requirements, editions and fees change. Check uscis.gov and travel.state.gov before relying on anything here.