The Foreign Principal Party in Interest (FPPI) is the person or legal entity outside the United States that receives the primary benefit, monetary or otherwise, from the import or export transaction. The FPPI is the person or entity that ultimately controls the transaction and stands to gain the most from it. They are typically the foreign exporter or the foreign importer, depending on the specific circumstances of the transaction. They can also be the Ultimate Consignee.

Like the U.S. Principal Party in Interest (USPPI), the FPPI is responsible for ensuring that the correct information is provided to CBP and for paying any duties or taxes that may be due on the imported or exported goods. It is important to accurately identify the FPPI in order to correctly classify the goods and properly determine any applicable duties and taxes.