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What is Lockbox Filing?

Lockbox Filing is USCIS' secure method for submitting and processing EB-4 visa petitions and fees, essential to avoid delays and ensure the correct progress of the process.

Written by

Victoria Harper

Editor-in-Chief

Updated on March 7, 2026
2 min read
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When dealing with immigration processes, it is common to encounter technical terms that may cause doubts. One of them is ‘Lockbox Filing’, especially in processes related to the EB-4 visa. This is a method of submission and administrative processing adopted by the United States Citizenship and Immigration Services (USCIS) for receiving petitions and fee payments.

In practice, Lockbox Filing consists of sending forms, documents, and payments (such as processing fees) to a specific address designated by USCIS, which acts as a secure screening and processing center. This initial step is essential for the petition to be properly registered and forwarded to the subsequent steps of the bureaucratic flow.

In the case of the EB-4 visa, which covers special immigrant categories, correctly following the submission instructions for the Lockbox is crucial to avoid delays or complications. It is important to highlight that each type of petition may have a different Lockbox address, and the submission details can vary over time.

Thus, it is crucial to follow the latest instructions provided by USCIS and ensure that all rules are strictly followed. Properly complying with these procedures helps maintain the integrity of the process and demonstrates respect for United States immigration laws.

Furthermore, when preparing to send your documents, it is wise to seek information from official sources or professionals specialized in immigration to avoid falling victim to scams or unfounded promises of immediate results.

Remember that strict compliance with USCIS instructions is indispensable for the proper progress of the process, and support from recognized consultancies can help ensure each step is carried out without unforeseen issues.

In summary, Lockbox Filing is a critical administrative step that guarantees the secure receipt of forms and payments, driving the progress of your EB-4 visa application correctly and orderly. Respecting the rules and procedures established by USCIS is always the best way to ensure that your case proceeds transparently and effectively.

Learn more about EB-4 Visa

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Victoria Harper

Editor-in-Chief

Meet the author

Leading journalism and editorial content at Visto n’ Visa, Victoria helps make immigration topics clear, trustworthy, and easy to understand. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.

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What is Lockbox Filing?

Lockbox Filing is USCIS' secure method for submitting and processing EB-4 visa petitions and fees, essential to avoid delays and ensure the correct progress of the process.

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