F4 Visa Requirements: Wait Times, Costs, and the Unmarried Rule

The F4 visa is the family-based immigration category that lets a U.S. citizen who is at least 21 years old sponsor a brother or sister for lawful permanent residence. It works, but it is slow. Federal law caps fourth-preference visas at roughly 65,000 per fiscal year, and demand far outstrips supply. Most applicants wait between 14 and 16 years. Applicants from Mexico, the Philippines, India, and China routinely wait more than 20.1Office of the Law Revision Counsel. 8 USC 1153 – Allocation of Immigrant Visas

Because the wait spans a significant portion of a lifetime, the rules that seem like footnotes at filing time — who counts as a sibling, what happens if someone marries, how a child’s age is calculated — end up deciding whether the case ever produces a green card.

Who Can Sponsor and Who Qualifies as a Sibling

Only U.S. citizens can file an F4 petition. Lawful permanent residents cannot. The petitioner has to be 21 or older on the day of filing.

The definition of “brother or sister” is broader than many families assume. Full siblings sharing both biological parents qualify. Half-siblings who share one biological parent qualify if birth records document the shared parent. Stepsiblings qualify if the marriage that created the step-relationship happened before the younger sibling turned 18. Adopted siblings qualify if the adoption was finalized before the child turned 16 and the child lived with the adoptive parent for at least two years.2Cornell Law Institute. 8 USC 1101(b)(1) – Definition of Child

Documenting the relationship means submitting proof of the petitioner’s citizenship (birth certificate, naturalization certificate, citizenship certificate, or U.S. passport) plus birth certificates for both siblings showing at least one shared parent. Step or adoptive relationships require the underlying marriage certificate or adoption decree.

When birth records don’t exist or aren’t reliable, USCIS accepts secondary evidence: contemporaneous medical, school, or religious records, and sworn affidavits from people with personal knowledge of the births. USCIS can also request DNA testing. Sibling-to-sibling DNA needs to show at least a 90 percent probability of the relationship; parent-child testing used to prove a shared parent needs 99.5 percent. DNA results alone are not enough — supporting documents still have to come with them.3U.S. Citizenship and Immigration Services. DNA Evidence of Sibling Relationships

Foreign-language documents need complete English translations, with the translator certifying accuracy and competence in both languages.

The Unmarried Rule That Ends Many F4 Cases

There is no immigrant visa classification for a “married sibling of a U.S. citizen.” If the sibling marries while the I-130 is still pending, USCIS denies it. If the petition has already been approved but the sibling has not yet received the green card, marriage automatically revokes the approval.4U.S. Citizenship and Immigration Services. USCIS Policy Manual Volume 6 Part B Chapter 2 – General Eligibility Requirements The sibling’s spouse and children lose their derivative eligibility along with the principal. Given wait times measured in decades, this rule catches many families. There is no reclassification path under F4; a sibling who marries during the wait needs a different visa category entirely.

Priority Dates and How Long the Wait Really Is

The priority date is set the day USCIS receives your I-130. That date is your place in line. Each month, the Department of State publishes the Visa Bulletin listing cutoff dates for every preference category and country. Only when your priority date is earlier than the posted cutoff can your sibling move to the final interview stage.5U.S. Citizenship and Immigration Services. Visa Availability and Priority Dates

Two numerical rules drive the wait. Congress caps F4 at about 65,000 visas per year (plus any unused numbers from higher preference categories), and no single country can take more than 7 percent of the combined family-sponsored and employment-based total.6Office of the Law Revision Counsel. 8 USC 1152 – Numerical Limitations on Individual Foreign States The per-country cap is what stretches waits to 20-plus years for high-demand countries.

The Visa Bulletin doesn’t only move forward. When demand spikes or the State Department finds it overestimated supply, the cutoff can move backward. This is called retrogression. Your priority date doesn’t change, but a case that looked ready last month may have to wait again. Adjustment applications already filed stay pending, and the applicant keeps authorized status while they wait for the date to become current again.

What It Costs

Fees stack across USCIS, the Department of State, and the panel physician who does the medical exam.

The beneficiary’s spouse and children pay their own visa application fees and medical exam costs. A family of four can face well over $2,000 in government fees alone, before attorneys or translations.

The Affidavit of Support

Every F4 case requires Form I-864. By signing it, the petitioner promises to support the immigrant at 125 percent of the federal poverty guidelines until the immigrant naturalizes, earns 40 qualifying quarters under Social Security, dies, or permanently leaves the country. It is a legally enforceable contract.

For 2026, 125 percent of the poverty guideline for a household of two in the 48 contiguous states is $27,050 per year, calculated from the base guideline of $21,640 for two people. Each additional household member raises the requirement. Household size includes the sponsor, the sponsor’s dependents, anyone covered by a prior I-864 obligation, and all immigrants being sponsored.9U.S. Department of Health and Human Services. 2026 Poverty Guidelines

If the petitioner’s income falls short, a joint sponsor can sign a separate I-864. The joint sponsor must be a U.S. citizen or lawful permanent resident, at least 18, domiciled in the United States, and must independently meet the 125 percent threshold for their own combined household. The joint sponsor accepts the same legal obligation as the petitioner.

How the Case Moves From I-130 to Visa

  • Filing and priority date. The petitioner files Form I-130 with USCIS. The receipt date becomes the priority date.
  • USCIS adjudication. USCIS approves or denies the petition based on the relationship. Approval does not mean a visa is available.
  • National Visa Center. After approval, the case moves to the NVC and waits there until a visa number is expected to become available.
  • Fees and DS-260. When the NVC activates the case, the beneficiary pays the immigrant visa and affidavit of support fees and submits the DS-260 through the Consular Electronic Application Center.
  • Medical exam. The beneficiary sees a panel physician designated by the embassy or consulate.
  • Consular interview. An officer verifies the relationship and screens for grounds of inadmissibility. If everything is in order, the visa is issued.

If the beneficiary is already in the United States and has managed to maintain continuous lawful status since a lawful admission or parole, adjustment of status through Form I-485 is possible once the priority date is current.10Office of the Law Revision Counsel. 8 USC 1255 – Adjustment of Status With F4 waits running 15 to 20 years, holding lawful status that long is uncommon, so most F4 beneficiaries process through a consulate abroad.

Spouses and Children on the Same Case

The beneficiary’s spouse and unmarried children under 21 can ride along as derivative beneficiaries on the same petition. They don’t need a separate I-130.11U.S. Department of State Foreign Affairs Manual. 9 FAM 502.1 IV Classifications Overview

A child who turns 21 during the wait would normally lose that status. The Child Status Protection Act adjusts the child’s age using a formula: take the child’s biological age on the date the visa becomes available, then subtract the number of days the I-130 was pending before approval. If the resulting CSPA age is under 21 and the child remains unmarried, they still qualify as a derivative.12U.S. Citizenship and Immigration Services. Child Status Protection Act (CSPA)

Marriage ends derivative eligibility for a child at any point before the green card is issued, regardless of age. The statutory definition of “child” requires being both unmarried and under 21 (or under 21 by CSPA calculation), and there is no reclassification within the same petition.

If the Petitioner Dies During the Wait

The death of the petitioning U.S. citizen automatically revokes an approved I-130 and ends a pending one. Two narrow rescues exist.

A beneficiary who was living in the United States when the petitioner died, and who continues to reside there, can ask USCIS to continue the case under INA section 204(l).13Office of the Law Revision Counsel. 8 USC 1154 – Procedure for Granting Immigrant Status A substitute sponsor has to sign a new I-864. The substitute must be a U.S. citizen or permanent resident, at least 18, domiciled in the United States, and related to the beneficiary in one of the ways the statute lists (spouse, parent, sibling, adult child, or in-law, among others).

A beneficiary abroad can request humanitarian reinstatement under 8 CFR 205.1. This is discretionary. USCIS weighs the effect on U.S.-based family, the applicant’s age and health, ties to the home country, and whether government delays contributed to the situation.14eCFR. 8 CFR 205.1 – Automatic Revocation A substitute sponsor is still required. Humanitarian reinstatement is only available when the petitioner died after the petition was approved, not while it was pending.