by Matt Rej
On October 26, 2026, a federal appeals court ruled that the current debit card swipe fee cap is unlawful.
The headline itself is honestly a bit confusing, and I’m already getting tons of inquiries less than 24 hours since the announcement was made. So I’m writing this to clear it up.
Most people see “court strikes down $0.21 debit cap” or “fed debit interchange cap ruled unlawful” and assume it means those caps are going away. And without federal caps in place on regulated debit transactions, merchant fees could go up significantly.
It’s a logical way to read the headline, but it’s actually the opposite of what’s happening.
The latest court ruling is actually good news for merchants. But it won’t show up on your statement quite yet.
Does the Court Ruling Mean Debit Card Fees Are No Longer Capped?
No, regulated debit transactions are still capped at 0.05% + $0.21 per transaction.
Nothing about the ruling changes interchange rates or caps on debit cards right now. Nor does the ruling set a specific date when caps would be lifted (because they aren’t being lifted).
Instead, the ruling said that the current debit card interchange caps are too high.
Here’s the context behind it.
Debit card caps come from Congress, not the Fed. When the Durbin Amendment passed in 2010, it required debit interchange charged by large banks to be “reasonable and proportionate” to what it costs those banks to process the transaction. Then it became the Fed’s job to turn this new requirement into a number.
The Fed ultimately landed on 21 cents plus 0.05% of the sale, and an extra cent for banks that meet fraud prevention. Meaning the maximum allowable interchange on a regulated debit transaction is 0.05% + $0.22.
That law is still on the books. But what the court rejected is the Fed’s number.
This all stems from a lawsuit brought forth by a North Dakota truck stop, the Corner Post. Corner Post wasn’t trying to eliminate the cap. They argued that the cap was too high and now two courts have agreed.
Why the Court Says the 21-Cent Debit Cap is Too High
The problem is essentially based on the Fed’s equation used to arrive at the current cap. When they initially arrived at $0.21, the Fed let banks count a wide range of costs, including:
- Fixed expenses of running authorization and settlement system
- Network processing fees
- Fraud prevention
- Fraud losses
But the appeals court said that Congress only allowed banks to include costs tied to individual transactions.
Fixed expenses and overhead that a bank has no matter how many cards get swiped (hardware, software, labor) can’t be used in the calculation to justify the interchange cap.
The latest court decision did leave the Fed with some wiggle room. So a new cap doesn’t necessarily have to match the bank’s per-transaction costs to the penny. But does need to be within a reasonable relationship to their actual costs.
Though before they can arrive at a new number, the Fed needs to actually sort out those debit transaction costs from everything else.
The Ruling Points to Lower Debit Card Interchange Rates in the Future
While the Fed lost this appeal, they still have options at their disposal. Like a petition for a panel rehearing or Supreme Court review. Though none of those motions have been filed yet.
But the most likely outcome is that a new calculation method needs to be used for debit card interchange caps.
And since that formula has to remove costs that were used previously, the new cap will likely be lower than $0.21.
How much lower? It’s speculative, but we may have a hint.
Back in October 2023, the Fed proposed cutting the fixed portion of the current debit interchange cap from 21 cents to 14.4 cents. They proposed this on their own based on data showing that processing costs for banks had fallen. Though that proposal never moved forward.
So a cap based on the court’s narrower rules could potentially come in below that 14.4-cent mark.
Why Your Debit Fees Won’t Change Yet
To be clear, the October 26th court ruling did not specify a new debit interchange amount or timeline when a new rate would go into effect. And while the court affirmed the decision to vacate the cap, the ruling doesn’t take effect until after the appellate mandate is issued.
Translation: nothing is actually changing right now. And the current debit card interchange caps are still in effect.
When the lower court made the same ruling back in August 2025, the judge kept everything running during the appeal so that debit card fees wouldn’t become an unregulated free-for-all.
Fast-forward to the October 26, 2026 decision, and there are still a few things that still have to happen before a new number shows up.
- The Eighth Circuit has to formally finalize its decision.
- The Fed can ask the Supreme Court to take the case.
- A nearly identical lawsuit brought by Linney’s Pizza in Kentucky is still pending a different appeals court after a judge sided with the Fed. So if that court rules the other way, the Supreme Court will likely have to settle it.
And after all that is done, the Fed still has to write and finalize a new rule. Which could honestly take years.
Will Your Processor Pass a Lower Debit Cap Through to You?
Everything happening right now is largely out of your control. But the question you should be asking yourself is merchant is the part that most of the coverage around this story skips.
And it matters more for your direct costs than anything that’s said in court.
Will you actually benefit from lower interchange caps if they change?
Lower caps only help if your payment processing is set up for interchange costs to be passed along. Which means you need to be on some form of an interchange-plus pricing for this to matter.
On flat-rate or tiered setups, your rate stays the same even if the underlying cost drops. Lower interchange caps would just mean your processor profits even more on your account.
How to Make Sure You Actually Get These Savings
What you can do right now is assess your current setup.
First, make sure you’re on an IC+ pricing plan. If you’re not, you don’t need to switch processors to get this. It just involves a change to your billing setup.
That move alone will have a more immediate impact on your merchant fees as opposed to waiting for court rulings on debit card interchange caps. Though when those caps eventually drop, you’ll already be positioned for savings.