IN HB1215

Prohibits payment card networks from fixing interchange fees with covered credit card issuers (those with over $50 billion in consolidated worldwide assets) or using fee schedules that determine interchange fees charged by such issuers

Requires interchange fees calculated as a percentage of transaction amounts to exclude taxes, regulatory fees, gratuities, and tax-exempt products from the calculation base

Caps interchange fees on charitable contributions at 0.2% for debit cards and 0.3% for credit cards

Restricts payment card networks from requiring merchants to accept all credit cards from a covered issuer, penalizing merchants for lawful pricing practices, or charging dispute fees before responsibility is determined

Creates private cause of action allowing damages of actual losses (with 8% prejudgment interest), $500 minimum, or treble damages for bad faith violations, plus attorney's fees; effective July 1, 2026