To file Form I-130 for a stepchild, you submit the petition to USCIS with proof of your U.S. citizenship or lawful permanent resident status, the stepchild’s birth certificate, and your marriage certificate to the child’s biological parent — provided that marriage took place before the child turned 18. That age-at-marriage rule is the single requirement that decides whether you can file at all. Everything else is documentation, fees, and timing.
The Pre-18 Marriage Rule
Federal immigration law treats a stepchild as a “child” for visa purposes only if the marriage that created the stepparent-stepchild relationship took place before the child reached age 18.1Office of the Law Revision Counsel. 8 USC 1101 – Definitions The child’s age on the date of the marriage is what USCIS looks at. Whether the child was born in or out of wedlock does not matter.
If you married the biological parent after the child’s 18th birthday, you cannot file an I-130 for that child. There is no waiver. The only alternative is for the biological parent, if a U.S. citizen or LPR, to file the petition instead.2U.S. Citizenship and Immigration Services. Instructions for Form I-130, Petition for Alien Relative
Once the relationship is validly established, it stays valid for immigration purposes even if you later divorce the biological parent or the biological parent dies.3U.S. Citizenship and Immigration Services. Immigration, Adoption, and Citizenship for Stepchildren of U.S. Citizens and LPRs
Which Category Your Stepchild Falls Into
The category controls how long the wait is. Some categories have no wait at all; others sit in a backlog.
If You Are a U.S. Citizen
An unmarried stepchild under 21 is an Immediate Relative (IR-2). A visa is always available, so there is no numerical backlog.4U.S. Citizenship and Immigration Services. Green Card for Immediate Relatives of U.S. Citizen This is the fastest path.
An unmarried stepchild who is 21 or older shifts to Family First Preference (F1). A married stepchild of any age falls into Family Third Preference (F3). Both are capped annually and can involve long waits.5Office of the Law Revision Counsel. 8 USC 1153 – Allocation of Immigrant Visas
If You Are a Lawful Permanent Resident
No LPR-sponsored category qualifies as immediate relative. An unmarried stepchild under 21 is F2A; unmarried 21 or older is F2B. Both are subject to numerical limits and backlogs.6U.S. Citizenship and Immigration Services. Green Card for Family Preference Immigrants LPRs cannot petition for married stepchildren at all.
For any preference category, the State Department’s monthly Visa Bulletin shows current wait times by country and category. Check it regularly.
Documents You Need
The petition proves two things: your immigration status and the validity of the stepchild relationship.
For your status, submit one of the following: a U.S. passport, a U.S. birth certificate, or a naturalization certificate. If you are an LPR, submit a copy of your Permanent Resident Card (Form I-551).2U.S. Citizenship and Immigration Services. Instructions for Form I-130, Petition for Alien Relative
For the relationship, submit the stepchild’s birth certificate naming the biological parent, and your marriage certificate to that parent. The marriage certificate is what USCIS uses to confirm the child was under 18 on the marriage date, so it is the most important document in the file.
If either you or the biological parent was previously married, include certified proof that each prior marriage was legally terminated. Divorce decrees, annulment records, or death certificates all work. The current marriage must be legally valid for the stepchild relationship to exist.
When a Birth Certificate Is Not Available
If a reliable birth certificate cannot be obtained, USCIS accepts secondary evidence such as baptismal certificates, school records, hospital records, or immunization records.7USCIS. USCIS Policy Manual – Chapter 3 – Documentation and Evidence Affidavits from people with personal knowledge of the birth are also accepted but carry less weight. Each affidavit must include the affiant’s full name, address, date and place of birth, relationship to the parties, and a detailed explanation of how they know the facts. Consistency across documents matters more than volume. Anything not in English needs a certified English translation.
How to Submit the Petition
You can file Form I-130 online through your USCIS account or on paper by mail. As of 2025, the filing fee was $625 online and $675 by paper. Verify the current amount on the USCIS fee schedule before filing, because fees change.8U.S. Citizenship and Immigration Services. Filing Fees
Paper filings go to the USCIS Lockbox designated for your state of residence. Mail the form, all supporting documents, and the fee together. Online, you upload documents directly and can track the case in your account.
Based on USCIS data through February 2026, the median processing time for an I-130 filed for an immediate relative is roughly 13 months. Preference cases can run longer once backlog waits are added.
Filing the Green Card Application at the Same Time
If your stepchild is an immediate relative (unmarried, under 21, and you are a U.S. citizen) and is already in the United States after being inspected and admitted or paroled, they can file Form I-485 at the same time you file the I-130. This concurrent filing shortens the overall timeline because there is no wait for the I-130 to be approved first.4U.S. Citizenship and Immigration Services. Green Card for Immediate Relatives of U.S. Citizen Concurrent filing is not available for preference categories unless a visa is immediately available.
The Financial Support Commitment
Every family-based green card case requires the petitioner to file Form I-864, Affidavit of Support. This is a legally enforceable contract. You agree to maintain the stepchild at an annual income of at least 125 percent of the federal poverty guidelines for your household size.9Office of the Law Revision Counsel. 8 USC 1183a – Requirements for Sponsors Affidavit of Support Current thresholds are published by HHS each year.10HHS ASPE. 2026 Poverty Guidelines – 48 Contiguous States Household size includes you, your dependents, anyone you have previously sponsored, and the stepchild. If your income falls short, a joint sponsor with sufficient income can co-sign a separate I-864.
The obligation does not end when the stepchild receives the green card. It continues until the stepchild becomes a U.S. citizen, earns credit for roughly 40 qualifying quarters of work (about 10 years), permanently leaves the United States, or either of you dies.11USCIS. Affidavit of Support Divorce from the biological parent does not end it.
What Happens After Approval
Once the I-130 is approved and a visa number is available, the stepchild finishes the process in one of two ways depending on where they live.
Stepchild Already in the United States
A stepchild in lawful status inside the country can file Form I-485 to adjust status without leaving.12U.S. Citizenship and Immigration Services. I-485 – Application to Register Permanent Residence or Adjust Status They must have been inspected and admitted or paroled, and must be physically present when they file. A medical examination by a USCIS-designated civil surgeon is required. As of December 2024, Form I-693 must be submitted together with the I-485 or USCIS may reject the filing.13U.S. Citizenship and Immigration Services. I-693, Report of Immigration Medical Examination and Vaccination Record While the I-485 is pending, the stepchild can apply for an Employment Authorization Document on Form I-765.14USCIS. Application for Employment Authorization
Stepchild Outside the United States
If the stepchild is abroad, USCIS forwards the approved I-130 to the National Visa Center, which collects additional fees and documents and schedules an interview at a U.S. embassy or consulate.15Travel – State Department. Fees for Visa Services The stepchild completes Form DS-260 online before the interview.16Travel – State Department. Immigrant Visa Process – Complete Online Visa Application A medical examination by an embassy-designated panel physician is also required. If the visa is approved, the stepchild enters the United States as a lawful permanent resident.
Watch for Aging Out and Marriage During the Wait
A stepchild turning 21 before the green card is issued can be pushed from immediate relative into a slower preference category. The Child Status Protection Act provides relief. For immediate relatives of U.S. citizens, the stepchild’s age is frozen on the date the I-130 is filed. If they were under 21 when you filed, they will not age out.17USCIS. Child Status Protection Act (CSPA)
For preference categories like F2A, the calculation is different. The child’s age when a visa becomes available is reduced by the number of days the I-130 was pending; if the result is under 21, the child keeps the classification. The stepchild must also seek to acquire permanent residence within one year of visa availability.
The CSPA does not protect against marriage. A stepchild must stay unmarried to qualify as a “child” under immigration law. Marrying before the green card is issued changes the classification, and the CSPA cannot undo that.
Conditional Green Card if the Marriage Is New
If your marriage to the biological parent is less than two years old when the stepchild is admitted as a permanent resident, the stepchild receives a conditional green card valid for two years rather than the standard ten. This applies even though the stepchild is not a spouse, because the conditional status flows from the underlying marriage.
To remove conditions, the stepchild (or the parent on the child’s behalf) must file Form I-751, Petition to Remove Conditions on Residence, before the conditional status expires.18USCIS. Petition to Remove Conditions on Residence Missing that filing can cost the stepchild permanent resident status. If the marriage has ended by then, the stepchild may need to request a waiver of the joint filing requirement.