Many families assume that filing an immigration petition before a child turns 21 automatically protects the child from aging out. That is not always true.
Under U.S. immigration law, a “child” generally means an unmarried person under 21 years of age. INA § 101(b)(1), 8 U.S.C. § 1101(b)(1).[1]
Because immigration cases can take years, Congress enacted the Child Status Protection Act (CSPA) to protect certain beneficiaries from losing eligibility solely because they turn 21 while an immigration case is pending.
Whether CSPA protects a particular child depends on the immigration category, the child's age, petition-processing time, visa availability, and, in some cases, whether the beneficiary timely took steps to obtain permanent residence.
1. What Does “Aging Out” Mean?
A beneficiary may “age out” when the person can no longer qualify as a “child” because the person is considered 21 or older for immigration purposes.
Depending on the immigration category, aging out can cause the beneficiary to move into a different preference category, face a substantially longer waiting period, or lose eligibility as a derivative beneficiary.
However, a person's biological 21st birthday does not always determine the result. CSPA may preserve the beneficiary's age for immigration purposes.
2. Immediate-Relative Children of U.S. Citizens
For a child who qualifies as the immediate relative of a U.S. citizen, CSPA generally fixes the child's age on the date the U.S. citizen parent properly files Form I-130.
Therefore, if the beneficiary was under 21 and unmarried when the qualifying I-130 was filed, later turning 21 while the petition or immigrant-visa process remains pending generally does not cause the beneficiary to age out of the immediate-relative classification.
The beneficiary must still satisfy other requirements of the classification, including remaining unmarried.
Different rules may apply where the petitioner naturalizes after filing or where other changes in family status occur.
3. Children of Lawful Permanent Residents and Derivative Beneficiaries
For certain family-preference beneficiaries and derivative beneficiaries, CSPA uses a mathematical formula rather than simply freezing the child's age on the petition filing date.
Under INA § 203(h)(1), 8 U.S.C. § 1153(h)(1), the CSPA age is generally calculated as:[2]
Age when an immigrant visa becomes available
minus
the number of days the applicable immigrant petition was pending.
If the resulting CSPA age is under 21, the beneficiary may continue to qualify as a child for immigration purposes, provided the other statutory requirements are satisfied.
4. Example
Assume a qualifying petition is filed when a derivative beneficiary is 20 years and 11 months old.
The petition remains pending for 6 months and is then approved. Because of the applicable preference-category backlog, however, an immigrant visa does not become available until 9 months after approval, when the beneficiary is 22 years and 2 months old.
The beneficiary’s approximate CSPA age would be:
22 years, 2 months − 6 months = 21 years, 8 months.
Only the time during which the petition was pending is subtracted. The waiting time after petition approval and before visa availability is not subtracted.
Although the beneficiary was under 21 when the petition was filed, the resulting CSPA age is over 21. The beneficiary therefore generally would no longer qualify as a child under the CSPA age calculation.
By contrast, if the same petition had remained pending for 2 years and the beneficiary was 22 years and 2 months old when a visa became available, the approximate CSPA age would be:
22 years, 2 months − 2 years = 20 years, 2 months.
In that situation, the beneficiary may remain protected under CSPA if the beneficiary satisfies the other requirements, including the applicable one-year “sought to acquire” requirement and remaining unmarried.
These examples use years and months for readability. USCIS calculates the petition’s pending time and the beneficiary’s age using the actual dates and number of days.
5. The One-Year “Sought to Acquire” Requirement
For beneficiaries governed by INA § 203(h)(1), having a calculated CSPA age under 21 generally is not enough.
The statute also requires the beneficiary to have “sought to acquire” lawful permanent resident status within one year after an immigrant visa becomes available.
Depending on the case, qualifying actions can include filing Form I-485 or taking appropriate steps in immigrant-visa processing.
USCIS recognizes an extraordinary-circumstances exception in appropriate cases where the beneficiary did not satisfy the one-year requirement and the delay was reasonable under the circumstances.
Because this deadline can determine whether CSPA protection is preserved, beneficiaries should not delay once a visa becomes available.
6. When Is a Visa Considered Available?
For CSPA age calculations under INA § 203(h), the date on which an immigrant visa becomes available can determine whether the beneficiary’s calculated age is under 21.
Under current USCIS policy, effective August 15, 2025, USCIS generally uses the Final Action Dates chart in the Department of State Visa Bulletin to determine visa availability for CSPA age-calculation purposes. A visa is not considered available before the underlying petition is approved, even if the priority date is current earlier.[3]
USCIS continues to apply its February 14, 2023 policy to adjustment-of-status applications that were already pending with USCIS before August 15, 2025. Under that former policy, USCIS used the chart it had designated for filing adjustment applications for the relevant month, which in some cases was the Dates for Filing chart.[3]
USCIS also recognizes a limited extraordinary-circumstances provision for certain applicants who did not apply for adjustment of status during the former-policy period. Whether that provision applies requires a case-specific analysis.[3]
Because the governing chart, petition-approval date, priority date, and procedural history can affect the calculation, applicants should use the policy applicable to their particular filing and should not rely on the Visa Bulletin alone.
7. Marriage Can Affect Eligibility
CSPA protects against certain age-related consequences. It does not eliminate other eligibility requirements.
Because the statutory definition of “child” generally requires the person to be unmarried, marriage can change or eliminate eligibility even where CSPA otherwise protects the beneficiary's age.
8. Do Not Wait Until the Child Turns 21
If a child in an immigration case is approaching 21, the case should be reviewed before the birthday.
Important questions include:
What immigration category applies?
Is the beneficiary a principal or derivative beneficiary?
Was the beneficiary under 21 when the relevant petition was filed?
How long was the applicable petition pending?
When does an immigrant visa become available?
What is the beneficiary's calculated CSPA age?
Does the one-year “sought to acquire” requirement apply, and has it been satisfied?
Must the beneficiary remain unmarried?
The answers can differ substantially depending on the immigration category and procedural history.
Conclusion
Turning 21 does not automatically mean that a beneficiary has lost immigration eligibility. But filing a petition before age 21 also does not automatically guarantee protection.
The Child Status Protection Act can preserve eligibility for many beneficiaries, but the result depends on the particular immigration category, petition-processing time, visa availability, marital status, and applicable procedural requirements.
Families with a child approaching age 21 should review the case early rather than waiting until after the birthday.
Disclaimer: This article provides general information and does not constitute legal advice. Immigration law and agency policy can change, and CSPA calculations depend on the facts and procedural history of each case. Reading this article does not create an attorney-client relationship. Anyone facing a possible age-out issue should consult a qualified immigration attorney about the specific case.