On October 2, the Office of the Comptroller of the Currency (OCC) filed an amicus brief in the U.S. District Court for the Northern District of Illinois in support of several banking associations’ motion for a preliminary injunction against the Illinois Interchange Fee Prohibition Act (IFPA). The IFPA, signed into law in June 2024, prohibits credit or debit card issuers and any other entities involved in processing electronic payments from charging an interchange fee on the tax or gratuity portions of a transaction. Additionally, the Act, which is set to take effect in July 2025, restricts banks and other entities from using transaction data for purposes other than processing the transaction, except as required by law. Several banking associations quickly challenged the Act, seeking a preliminary injunction to prevent its implementation. They argue that the IFPA is preempted by federal law, unconstitutional, and invalid.







