When small businesses begin importing goods into the United States, compliance paperwork can feel overwhelming, and one of the first questions often asked is “how do I create an ISF file?” The Importer Security Filing, commonly called ISF or 10+2, is required for most ocean freight entering the country. Understanding what it is, who files it, and how to submit it correctly can help small importers avoid delays, penalties, and unnecessary stress at the port. What an ISF Is and Why It Matters An ISF is a security filing submitted to U.S. Customs and Border Protection before cargo is loaded…