Premium credit cards have built an elaborate aspirational economy: lounge access, statement credits, transferable points, status tiers. The pitch is that the bank pays for the perks. The reality is that merchants do, and they pass those costs to every customer regardless of payment method. The result is a system in which low-income shoppers using cash subsidize the rewards of high-income shoppers using a Sapphire Reserve, and the design is no accident.
How interchange fees travel through the system
When you swipe a credit card, the merchant pays an interchange fee — typically 1.5% to 3.5% of the transaction, with premium rewards cards on the higher end. That fee is set by the card networks (Visa and Mastercard control roughly 80% of the U.S. market) and split between the issuing bank, the network, and processors. Merchants don’t absorb these costs; they’re built into prices. A grocery store, gas station, or coffee shop sets posted prices high enough to cover the average payment-mix cost, then charges everyone the same. Customers paying cash, debit, or low-tier cards pay the price designed to absorb premium-card fees. Cardholders earning 2-5% back come out ahead. Non-cardholders silently fund the difference.
The redistribution is well-documented
A 2010 Federal Reserve study found that the lowest-income households effectively pay over $20 per year to the highest-income households through this mechanism, and the gap has widened as premium card adoption has grown. More recent analyses, including work by the Boston Fed, estimate the annual transfer at hundreds of dollars per household at the top of the income distribution, financed by an effectively flat surcharge on everyone’s purchases. Cash and debit users — disproportionately lower-income, immigrants, and the unbanked — receive no offset. The merchant’s only way to charge cardholders the actual cost of their preferred payment method is a surcharge, and major networks contractually limit when and how that’s permitted.
Other countries handled this differently
Australia, the European Union, and Canada have all capped interchange fees at levels far below U.S. rates — typically 0.3% to 0.5% for credit cards. The predicted apocalypse for cardholders never arrived; rewards programs shrank but cards remained ubiquitous, and consumer prices reflected a meaningful portion of the savings. The U.S. has resisted similar reform, with the Durbin Amendment in 2010 capping debit interchange but leaving credit untouched. The Credit Card Competition Act, debated since 2022, aims to introduce routing competition that could lower credit interchange but has faced sustained pushback from the banking industry. The political economy is straightforward: the people who benefit most are organized; the people who pay are diffuse.
The bottom line
If you’re optimizing rewards on a high-spend household budget, the system is working for you and there’s no individual reason to opt out. But the framing of rewards as “free” is wrong. The money comes from a pricing mechanism that taxes the entire purchasing public and rebates a portion of it to the most affluent users. Understanding that doesn’t require giving up your card — it requires recognizing that the points game is a regressive transfer dressed up as a loyalty program, and that policy reform, not consumer choice, is what would actually change it.
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