The Mechanics of Payment Reform: How the Visa/Mastercard Antitrust Settlement Will Reduce Swipe Fees and End the 'Honor All Cards' Rule

On June 9, 2026, U.S. District Judge Brian Cogan granted preliminary approval to a landmark $38 billion settlement between Visa, Mastercard, and approximately 12 million U.S. merchants. The ruling marks a critical turning point in a 21-year antitrust battle over interchange fees—the "swipe fees" that merchants pay every time a customer uses a credit card. By declaring the revised agreement "fair, reasonable, and adequate," the federal court in Brooklyn has set the stage for structural changes to the American payment ecosystem, ending decades of rigid network rules that merchants claimed were monopolistic.[1][2]

The settlement replaces an earlier $30 billion proposal that was rejected in June 2024 by District Judge Margo Brodie, who concluded it did not provide sufficient relief to merchants and left anti-competitive network rules intact. This new iteration shifts the focus from purely monetary compensation to sweeping equitable relief. It forces Visa and Mastercard to alter the fundamental rules that have governed credit card acceptance for decades, offering merchants unprecedented leverage over how they process payments and interact with consumers at the checkout counter. The shift represents a major victory for market-based negotiations.[1]

To understand the magnitude of the shift, one must examine the mechanics of interchange. When a consumer taps or swipes a credit card, the merchant does not receive the full purchase amount. A fraction of the sale—averaging around 2.35% in the United States—is skimmed off the top and distributed among the card issuer, the payment network, and the merchant's processor. For years, merchants have argued that Visa and Mastercard used their duopoly power to artificially inflate these rates, treating them as an unavoidable tax on doing business.[4]

The most immediate mechanism of the 2026 settlement is a direct reduction in these posted rates. Visa and Mastercard have agreed to lower their credit interchange rates by 10 basis points (0.10%) across the board for a period of five years. Furthermore, the networks will cap the interchange rate for standard consumer credit cards at 1.25% for eight years, down from the typical 1.4% to 1.6% range. While the networks will absorb some of this impact, the rate caps introduce a hard ceiling on basic transaction costs.[1][2]

While a 10-basis-point reduction sounds miniscule in isolation, it represents a massive aggregate transfer of wealth across the U.S. economy. Plaintiffs' experts estimate the combined rate cuts and rule changes will generate over $200 billion in savings for merchants over the next eight years. For a small business processing $50,000 a month in credit volume, the direct rate cut translates to roughly $600 in annual savings. For massive national retailers, the savings scale into the tens of millions of dollars annually.[2]

However, the rate reductions are arguably the less consequential half of the settlement. The true structural earthquake lies in the dismantling of the "Honor All Cards" rule. For decades, this network mandate dictated that if a merchant accepted a single Visa or Mastercard, they were legally obligated to accept every card bearing that logo, regardless of the issuing bank or the specific product tier. This all-or-nothing approach stripped merchants of the ability to control their specific payment processing costs.[4]

The "Honor All Cards" rule effectively forced merchants to subsidize lucrative consumer rewards programs. Premium travel and cash-back cards carry significantly higher interchange fees—often exceeding 3%—to fund the perks offered to affluent cardholders. Under the new settlement, merchants gain the explicit right to selectively decline specific categories of cards. A retailer can now choose to accept standard consumer cards capped at 1.25%, while refusing to process high-cost premium or commercial cards that eat into their profit margins.[1]

Complementing this new right of refusal is an expansion of surcharging flexibility. Merchants will now be permitted to apply a surcharge of up to 3% on credit card transactions, regardless of whether they also accept or surcharge competing networks like American Express. This allows businesses to pass the specific cost of premium rewards cards directly to the consumer choosing to use them, rather than burying the network fees in higher overall retail prices that affect cash and debit customers.

Despite these concessions, the settlement faces fierce opposition from the largest players in the retail sector. The National Retail Federation (NRF), the National Association of Convenience Stores (NACS), and retail giants like Walmart argue that the agreement is fundamentally inadequate. They contend that the 10-basis-point reduction is a temporary bandage on a market that remains structurally broken, noting that Visa and Mastercard will be free to raise fees without restriction the moment the five-year cap expires.[1][2]

Furthermore, these objectors point out a glaring practical limitation to the new "Honor All Cards" flexibility. While merchants now have the theoretical right to decline premium rewards cards, exercising that right is commercially perilous. Consumers are fiercely loyal to their travel and cash-back cards. A major retailer refusing to accept a flagship premium card risks alienating its most affluent customers and driving them to competitors, making the new decline rights a hollow victory in practice for many consumer-facing brands.

The financial sector views the settlement through a different lens, focusing on market stability. Analysts at S&P Global note that while the proposal introduces negative indirect effects for payment networks, it is unlikely to materially damage Visa or Mastercard's core business models. The networks preserve their central role in the global economy, and the settlement removes a massive legal overhang that has shadowed their stock prices for two decades, allowing them to pivot capital toward innovation rather than litigation.[3]

Credit unions and community banks, however, are sounding alarms about the downstream effects of the rate caps. These smaller financial institutions rely heavily on interchange income to fund free checking accounts, fraud protection services, and community investments. Industry advocates warn that capping standard consumer rates at 1.25% could force credit unions to introduce new account fees or scale back consumer benefits to offset the lost revenue, ultimately harming low-income banking customers who rely on subsidized services.

The court's preliminary approval also intersects with ongoing legislative battles in Washington. Proponents of the Credit Card Competition Act (CCCA)—a bipartisan bill aimed at forcing large banks to offer alternative routing networks—argue that congressional action is still necessary to introduce true competition. Conversely, opponents of the bill point to the $38 billion settlement as proof that the free market and the judicial system are capable of delivering merchant relief without heavy-handed government intervention that could break the payment ecosystem.[3]

For the average consumer, the immediate impact of the settlement will likely be subtle but pervasive. As merchants gain the ability to surcharge up to 3% or decline premium cards, shoppers may encounter more friction at the checkout counter. The era of seamlessly tapping a high-tier rewards card for a small purchase without incurring an extra fee may gradually come to an end, as small businesses exercise their new pricing power to steer customers toward cheaper payment methods.[4]

The settlement now moves into the class-notice phase, with a final fairness hearing expected later in 2026. Given the vocal opposition from major retail consortiums, appeals are a near certainty, potentially pushing the actual implementation of the rate cuts and rule changes into 2027. Until then, the 21-year war over swipe fees remains in a state of heavily armed ceasefire, with both merchants and networks preparing for the next phase of American commerce.