Merchants and banks across Illinois face a direct collision between federal and state authority over the fees charged every time a customer swipes a debit or credit card. The Office of the Comptroller of the Currency has issued an interim final rule that takes effect June 30, 2026, one day before Illinois’ own swipe-fee restrictions are set to kick in. The timing is not coincidental. The OCC framed its action as a preemptive strike to block what it called “imminent negative effects” on federally chartered institutions, and a parallel move by the National Credit Union Administration extends the same logic to credit unions. The result: Illinois’ Interchange Fee Prohibition Act will apply to state-chartered banks at most, while national banks and federal credit unions operate under federal rules that preserve their ability to collect interchange revenue without state-imposed limits.
Why the June 30 federal deadline neutralizes Illinois’ July 1 cap
The one-day gap between the two effective dates tells the whole story. Illinois enacted state legislation that set Article 150 of the Interchange Fee Prohibition Act to take effect July 1, 2026. That law would have restricted certain interchange fees that merchants pay when consumers use cards at checkout, particularly when those fees are tied to the tax and tip portions of a transaction. Lawmakers framed the measure as a way to reduce costs for retailers and consumers by narrowing the base on which percentage fees can be charged.
Before the Illinois statute could take hold, the OCC published an interim bulletin clarifying that national banks retain the power to charge and receive interchange fees even when those fees are set by third parties such as card networks. The agency emphasized that these non-interest charges are part of the core business of offering payment services and therefore fall squarely within federally granted powers. Because the bulletin becomes effective June 30, it creates a federal baseline for interchange authority that conflicts with the state’s attempt to narrow or prohibit certain fees starting the next day.
A separate OCC order, described in a contemporaneous release, went further. It concluded that federal law preempts the Illinois IFPA outright and stated that national banks and federal savings associations “are neither subject to nor required to comply with” the state law. That language leaves little ambiguity about the OCC’s position: federally chartered institutions in Illinois will not lower or reconfigure their interchange rates on July 1, even if state regulators move forward with enforcement against other providers.
Parallel NCUA action and the competitive-equity argument
The OCC did not act alone. The NCUA issued its own interim final rule on non-interest charges and fees, including interchange, also effective June 30, 2026. The agency’s stated rationale was to confirm that federal credit unions may continue to impose and receive interchange-related fees under federal law, notwithstanding state-level restrictions. By mirroring the OCC’s timing and legal reasoning, the NCUA sought to ensure that federal credit unions would not face a competitive disadvantage relative to national banks or to state-chartered institutions that choose not to comply until courts weigh in.
Both agencies framed their actions as necessary to avoid market dislocation. The OCC’s news release NR 2026-32 described the interim rules as needed to prevent “imminent negative effects” from the Illinois IFPA, pointing to potential disruptions in how card networks route transactions and compensate issuers. That phrase signals urgency and suggests the agencies viewed even a brief period of compliance uncertainty as a threat to the stability of card-payment networks and to the revenue streams that support fraud monitoring, rewards programs and other cardholder benefits. Whether that concern proves justified depends on how state-chartered institutions and Illinois regulators respond after July 1.
What the federal preemption does not settle
Several questions remain unresolved despite the OCC and NCUA’s aggressive use of preemption. First, the agencies’ interpretations are likely to be tested in court. Merchant groups and consumer advocates who supported the Illinois statute may argue that the state law regulates the commercial relationship between merchants and payment processors, not the powers of national banks or federal credit unions. If a lawsuit materializes, a federal court will have to decide how far agency pronouncements can go in displacing state consumer-protection and pricing laws.
Second, the practical impact on Illinois’ dual banking system is uncertain. State-chartered banks and state-chartered credit unions are not covered by the OCC and NCUA rulings and therefore remain squarely within the scope of the Interchange Fee Prohibition Act unless a court blocks enforcement. Those institutions must weigh the cost of retooling their card programs against the risk of losing business to federally chartered competitors that can continue charging traditional interchange fees. Some may consider converting to a federal charter to avoid the state cap, a move that could gradually erode Illinois’ supervisory reach over its own banking sector.
Third, the episode may influence legislative behavior well beyond Illinois. Other states considering caps on interchange or related fees will now have to draft with federal preemption squarely in mind. They could target non-bank payment processors and card networks more directly, or they might focus on transparency and disclosure rather than price restrictions. At the same time, Congress could face renewed pressure either to codify broader federal limits on interchange or to clarify the boundaries of agency preemption authority.
For now, the immediate effect is a patchwork. On July 1, merchants in Illinois will see state limits apply, if at all, only to a subset of their counterparties. National banks and federal credit unions will operate under a shield constructed by the OCC and NCUA, while state-chartered institutions navigate a new compliance regime. The resulting split underscores a familiar tension in U.S. financial regulation: states experimenting with consumer and merchant protections, and federal regulators stepping in when they believe those experiments threaten the uniformity of national banking and payments systems.
David M. Keller is a finance writer based in Columbus, Ohio, covering personal finance and consumer-focused economic topics. He earned his degree in journalism from Ohio University and began his career reporting on local business and economic trends for a regional media outlet. Since then, he has contributed to a variety of online publications, focusing on clear, practical coverage of topics such as cost of living, debt, and everyday financial decision-making.
