When a customer taps a credit card at a coffee shop in Chicago, the shop’s owner pays a fee, usually between 1.5% and 3% of the sale, to the bank that issued the card. That interchange fee funds a mix of fraud protection, cardholder rewards programs, and the network infrastructure that keeps digital payments running. Multiplied across millions of daily transactions, interchange adds up to more than $100 billion a year nationwide, according to the Nilson Report. Illinois tried to do something about it. The federal government just made sure the effort will not stick.
On June 30, 2026, two coordinated actions by the Office of the Comptroller of the Currency take effect, explicitly overriding the Illinois Interchange Fee Prohibition Act for every nationally chartered bank and federal savings association in the country. That covers JPMorgan Chase, Bank of America, Wells Fargo, Citibank, and the other large issuers that, by purchase volume, account for the bulk of U.S. credit card spending. For merchants who expected lower swipe costs, the message from Washington is blunt: interchange fees are federal territory, and states cannot redraw the lines.
How the OCC blocked Illinois in two moves
The OCC released a pair of bulletins designed to reinforce each other. The first is a formal preemption determination (docket OCC-2026-0431) concluding that federal law overrides the Illinois statute for nationally chartered institutions. The agency’s language is unambiguous: those banks are “neither subject to nor required to comply with” the state’s interchange fee restrictions or its transaction-data provisions.
The second is an interim final rule (docket OCC-2026-0430) amending 12 CFR 7.4002, the federal regulation that governs the non-interest charges and fees national banks can impose. For the first time, the amendment writes interchange fees from payment card activity directly into the regulatory text. That is not just a response to one state law. It is a structural change that could preempt similar legislation anywhere in the country before it gains traction.
Both actions appear on the OCC’s 2026 proposed issuances page, with formal comment pathways open to the public. By choosing the interim final rule format, the agency made the rule effective on June 30 while public comments are still being collected. That procedural shortcut gives the OCC speed but limits outside input before the rule takes hold.
Who is shielded and who is not
The OCC’s jurisdiction covers national banks and federal savings associations, the institutions that hold federal charters. In the credit card market, those are the dominant players. But the preemption does not extend to state-chartered banks, credit unions regulated by the NCUA, independent payment processors, or non-bank fintech companies. Those entities could still be subject to the Illinois law unless another federal regulator or a court says otherwise.
For an Illinois restaurant owner, the practical result is a split system. A transaction on a card issued by a nationally chartered bank carries the same interchange fee it always has, untouched by the state statute. A transaction on a card from a state-chartered community bank or credit union falls into murkier territory, and the answer may not be clear until regulators or courts weigh in.
Why Illinois passed the law and how merchants reacted
The Interchange Fee Prohibition Act targeted two pressure points for merchants. It sought to restrict the interchange fees banks collect on card transactions, and it placed limits on how banks and card networks can use the transaction data generated at the point of sale, aiming to stop that data from being monetized for purposes unrelated to processing the payment. Illinois lawmakers sometimes cite the statute as 815 ILCS 151, though the citation has not been independently confirmed in public statute databases as of June 2026.
Illinois lawmakers framed the measure as protection for consumers and small businesses. Interchange fees are rarely absorbed by the merchant alone; they get baked into shelf prices, which means every customer pays a share whether they use a credit card or not. Small merchants feel the squeeze most acutely because they lack the transaction volume to negotiate lower rates with Visa and Mastercard. The Illinois law was among the most aggressive attempts by any state legislature to regulate interchange directly.
“Swipe fees are the largest operating cost most retailers face after labor, and they keep climbing every year,” said Stephanie Martz, chief administrative officer and general counsel of the National Retail Federation, in a May 2026 statement urging federal action on interchange. Rob Karr, president and CEO of the Illinois Retail Merchants Association, called the OCC’s preemption “a gut punch to every Main Street business that supported this law,” adding that the association is reviewing legal options with state officials.
The OCC’s preemption order does not dispute the policy goals behind the Illinois law. Its argument is structural: Congress placed the business of banking, including the authority to set and collect fees for payment card services, under federal oversight. Letting 50 states write their own interchange rules for national banks, the agency contends, would fragment a system that depends on uniform federal standards. Acting Comptroller Rodney Hood framed the bulletins as “reaffirming the longstanding principle that nationally chartered banks operate under a single, consistent set of federal rules,” according to the OCC’s June 2026 bulletin announcement.
The federal interchange landscape the OCC is protecting
To understand why the OCC moved so aggressively, it helps to know what federal law already does and does not regulate. The 2010 Dodd-Frank Act included the Durbin Amendment, which directed the Federal Reserve to cap debit card interchange fees for banks with more than $10 billion in assets. The Fed set that cap at roughly 21 cents plus 0.05% of the transaction, and it has been in place since 2011.
Credit card interchange, by contrast, has never been subject to a federal cap. Visa and Mastercard set their own rate schedules, which vary by card type, merchant category, and transaction method. Premium rewards cards, for example, often carry interchange rates above 2.5%, while a basic card swiped at a grocery store might come in closer to 1.5%. Merchants and trade groups have pushed for years to extend Durbin-style regulation to credit cards. The most prominent vehicle is the Credit Card Competition Act, which would require large credit card issuers to offer merchants a choice of at least two unaffiliated networks for routing transactions, a move supporters say would create price competition and drive interchange rates down.
That bill has been introduced in multiple sessions of Congress and has bipartisan sponsors, but it has not reached a floor vote. The OCC’s June 2026 rule change does not address network routing or competition. What it does is lock in the principle that interchange fee-setting is a federally supervised banking activity, raising the legal bar for any state that tries to act where Congress has not.
What could happen next
As of early June 2026, no official response from the Illinois governor’s office or attorney general has appeared in the public record. Whether the state will challenge the OCC’s preemption in court remains an open question, but it would not be without precedent. Federal preemption of state banking regulations has been litigated repeatedly, most notably in Watters v. Wachovia Bank (2007), where the Supreme Court upheld the OCC’s authority to preempt state licensing requirements for national bank subsidiaries. A challenge here could test whether that authority extends as cleanly to payment card fee structures and data practices, particularly when a state invokes consumer-protection rationales rather than traditional banking regulation.
The public comment period for both OCC docket entries is open. Submissions from banks, merchant associations, consumer advocates, and card networks could influence whether the interim final rule is modified, narrowed, or finalized as written.
Other states are paying close attention. Legislatures in several states have introduced or considered interchange fee bills in recent sessions. The OCC’s decision to embed interchange fees into the permanent regulatory text, rather than issuing a one-off preemption order tied to a single state, signals that the agency intends to block state-level fee regulation as a category. If that framework holds, merchants looking for relief from swipe fees will need to press Congress or the Federal Reserve, not their state capitals.
What Illinois merchants and cardholders should expect starting June 30
Starting June 30, the largest banks in the country will continue charging the same interchange fees on credit card transactions in Illinois, and the state’s new law will not change that for any card issued under a federal charter. Merchants who process those cards have no new leverage to negotiate lower rates. Cardholders will not see any direct impact on rewards programs or card terms tied to interchange revenue.
The deeper question is whether the OCC’s move accelerates a federal conversation that has stalled for more than a decade. Congress has the authority to regulate credit card interchange and has chosen, so far, not to use it. The OCC’s June 2026 actions do not close that gap between what federal law covers and what merchants want covered. They widen it, and they make one thing unmistakable: any meaningful change to credit card swipe fees will have to come from Washington, not from Springfield or any other state capital acting alone.
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.
