For decades, the electronic payments ecosystem operated largely outside public scrutiny. Merchants accepted cards, consumers earned rewards, banks issued credit, and payment processors facilitated transactions. Most business owners never thought much about the mechanics behind a card payment beyond the monthly processing statement.
Today, that has changed.
Across the country, lawmakers, regulators, retailers, banks, card networks, and payment providers are engaged in one of the most significant debates the payments industry has faced since the Durbin Amendment was enacted in 2010. For merchant services professionals, understanding this battle is becoming increasingly important because merchants are hearing about interchange fees, swipe fee reform, routing mandates, rewards programs, and state legislation more frequently than ever before.
To properly advise business owners, agents need to understand the bigger picture.
The Payments Industry Has Become Enormous
The first thing to understand is the sheer scale of the modern card payments ecosystem.
The Scale of the Opportunity: U.S. merchants paid a record $187.2 billion in card processing fees in 2024.
According to The Nilson Report, U.S. consumers and businesses generated nearly $12 trillion in card purchase volume during 2024. Merchants paid approximately $187.2 billion in processing fees to accept those transactions, the highest amount ever recorded. Credit card transactions alone generated nearly $149 billion in merchant acceptance costs.
Card usage continues to grow despite the rise of ACH, real-time payments, and alternative payment methods. Visa and Mastercard alone processed more than $9.3 trillion in U.S. purchase volume during 2024 and continue to dominate the market.
As card payments have become the primary way consumers spend money, interchange fees have become one of the largest expenses for many businesses. For some retailers, restaurants, and service providers, payment acceptance costs now rival rent, insurance, or payroll taxes as a major line-item expense.
Not surprisingly, merchants have begun pushing back.
Why Merchants Are Fighting Interchange
Merchant groups argue that the current system lacks meaningful competition.
Their position is straightforward: accepting cards is no longer optional. Consumers expect to pay with credit cards, debit cards, mobile wallets, and contactless payments. Refusing cards can significantly reduce sales, which means merchants have little leverage when fees increase.
Organizations representing retailers frequently point to the fact that card fees have risen dramatically over the last decade. According to industry data, total merchant processing fees have increased from roughly $93 billion in Visa and Mastercard credit card fees in 2012 to well over $187 billion across all card products in 2024.
Many retailers argue that Visa and Mastercard effectively operate as a duopoly, controlling the majority of U.S. credit card volume while establishing the interchange framework that governs the industry.
From a merchant’s perspective, the question is simple: Why should payment acceptance costs continue rising when technology is becoming more efficient?
Why Banks Defend Interchange
Banks see the issue very differently.
Issuing banks argue that interchange is not simply a fee. Rather, it is the economic engine that funds the entire card ecosystem.
Every time a credit card transaction occurs, the issuing bank assumes fraud risk, credit risk, operational costs, compliance responsibilities, cybersecurity obligations, customer service expenses, and rewards program costs.
Perhaps most importantly, interchange helps fund the rewards programs consumers have come to love.
Recent economic research suggests that approximately 86% of interchange revenue ultimately flows back to consumers through rewards and loyalty programs. More than 80% of cardholders participate in rewards programs, and nearly three-quarters actively use those rewards.
Banks argue that if interchange revenue is substantially reduced, consumers will likely experience what happened after the Durbin Amendment capped debit card interchange in 2010: reduced rewards, fewer free banking services, and increased account fees.
In other words, banks believe interchange is not simply a merchant expense—it is the funding mechanism for benefits that consumers value.
The Illinois Experiment
The latest chapter in the interchange debate began in Illinois.
The Illinois Interchange Fee Prohibition Act (IFPA) attempted to prohibit interchange fees from being charged on the sales tax and gratuity portions of transactions. Supporters argued that merchants should not pay processing fees on money they never actually keep. Opponents countered that the payments infrastructure was never designed to separate taxes and tips during authorization and settlement.
What made Illinois particularly significant was that it opened the door for similar legislation in other states. Almost immediately, lawmakers around the country began examining their own versions of interchange reform.
To banks and card networks, this raised a serious concern. If dozens of states begin creating different interchange rules, the industry could face a fragmented regulatory environment where payment systems must operate differently depending on the state where a transaction occurs.
The Office of the Comptroller of the Currency recently stepped into the dispute by issuing guidance that preempts portions of the Illinois law for national banks and federal savings associations. While legal challenges continue, the federal government’s involvement demonstrates how significant the issue has become.
The Shadow of the Durbin Amendment
No discussion about interchange is complete without discussing the Durbin Amendment.
When Congress capped debit card interchange in 2010, supporters promised lower costs for merchants and lower prices for consumers. Critics warned that banks would simply recover the lost revenue elsewhere.
What followed remains one of the most debated topics in payments.
Many banks eliminated debit rewards programs. Free checking accounts became less common. Minimum balance requirements increased. Meanwhile, numerous studies found limited evidence that consumers received meaningful price reductions from merchants. As a result, both sides continue to cite the Durbin experience as proof that their position is correct.
Today, every proposed interchange reform bill is viewed through the lens of Durbin.
The Credit Card Competition Act
While Illinois focuses on taxes and tips, the Credit Card Competition Act (CCCA) focuses on routing.
Supporters believe requiring additional routing options on credit cards would increase competition and reduce merchant costs. Banks and card networks argue the proposal could weaken fraud protections, reduce rewards programs, and introduce new operational complexities.
Whether the legislation ultimately passes is less important than what it represents: growing political interest in changing the economics of card payments.
Why Interchange Reform Matters: The interchange debate isn’t really about payment processing—it’s about who pays for the modern payments ecosystem.
The debate is no longer confined to industry conferences and trade associations. It is increasingly becoming a mainstream political issue.
What This Means for Merchant Services Agents
For agents, the most important takeaway is that interchange is unlikely to disappear anytime soon.
Both sides have powerful arguments. Merchants are frustrated by rising costs. Banks are determined to protect the revenue streams that support rewards programs and credit availability. Regulators are concerned about competition. Consumers generally want lower prices while simultaneously wanting more rewards.
That creates a situation where legislative outcomes remain highly uncertain.
Meanwhile, merchants still need solutions today.
The Agent’s Advantage: Merchants can’t wait for Washington to solve their processing costs.
This reality explains the rapid growth of dual pricing, cash discount programs, surcharge programs, ACH acceptance, and alternative payment strategies. Businesses are increasingly looking for practical ways to manage payment acceptance costs rather than waiting years for legislative reform.
The merchants who call their representative about interchange reform today still have to pay their processing statement tomorrow.
Looking Ahead
The next decade could bring more change to payments than the previous twenty years combined.
Real-time payments, account-to-account transfers, stablecoins, digital wallets, embedded finance, and artificial intelligence are all creating new ways to move money. At the same time, lawmakers continue questioning the economics of interchange, while merchants continue searching for ways to reduce costs.
What is clear is that the payments ecosystem is becoming more competitive, more regulated, and more complex.
For merchant services professionals, that creates an opportunity.
The most successful agents will not be the ones who simply quote rates. They will be the ones who understand how the entire ecosystem works, can explain both sides of the interchange debate, and can help merchants navigate a rapidly changing payments landscape.
In an industry filled with noise, education has become one of the most valuable products an agent can offer.
