Illinois lawmakers are set to enforce a new statute this summer that prohibits merchants from adding credit‑card surcharges on taxes and tips. The measure targets the interchange fees that banks collect to fund the generous points and cash‑back programs on rewards cards. If passed, the rule could force some smaller issuers to pull their products from the state entirely in the region.

Major networks such as Visa and Mastercard have warned that the ban would erode a revenue stream that supports not only consumer incentives but also merchant discounts for processing high‑volume transactions. Industry analysts estimate the prohibited fees represent roughly 1‑2% of a typical purchase, translating into hundreds of millions of dollars annually for banks that issue high‑yield cards for the economy.

The state‑level clash could spur other jurisdictions to adopt similar restrictions, prompting a patchwork of rules that complicates nationwide card acceptance. Merchants fearing lost revenue may push back, while issuers weighing the cost of compliance might consolidate operations in fee‑friendly markets. For now, the Illinois law puts pressure on the business model that underpins today’s reward‑driven credit ecosystem across the United States.