Electronic Payment Transactions - Interchange Fees - Calculation and Use of Data

HB 29 requires payment processors and card issuers to exclude tax and gratuity amounts from electronic payment transaction fees. It mandates that credit/debit card issuers refund merchants for interchange fees incorrectly charged on tax and gratuity portions of transactions. The bill also prohibits certain entities from using electronic payment data for specific purposes and treats violations as unfair trade practices under Maryland's Consumer Protection Act. This directly affects merchants processing card payments, card issuers, and payment processors in Maryland.