Comment by diegocg
16 hours ago
So the article shows how visa and mastercard are, by far, not the ones taking the largest fee, and the solution is to get rid of them?
Where are you going to do the transactions in your scheme? Because credit card transactions are not the same as sending money from one bank account to another. There are settlements, disputes, chargebacks, etc.
How is the central bank going to offer the same variety of products described in the article? I.e..
> Interchange fees vary dramatically based on the kind of card, category of spend, and even the metadata attached to a transaction. The network’s goal is to set fees that incentivize desired behaviors on their network, including using more secure payment methods (lowering interchange fees for merchants), or for companies to do more business spending (higher interchange fees on commercial credit cards).
Your scheme sounds like all these crypto guys who think they can replace credit cards with bitcoin transactions, as if they were the same thing
> So the article shows how visa and mastercard are, by far, not the ones taking the largest fee
But they set the interchange rates and disallow (or at least have until recently, in the US) merchants to discriminate against cards based on rate or type via their “honor all cards” rules.
They are absolutely propping up and benefiting from the high fees.
Central bank instant payment system. The US has FedNow, and has had it for almost 3 years. It costs a few pennies to move up to $10M per XML message.
Brazil's Pix costs ~$10M/year to run: https://www.pymnts.com/wp-content/uploads/2026/09/PYMNTS-Int... [pdf] (September 2026 revision)
FedNow is a payments rail, which is a long shot away from being a full retail payments scheme. The latter needs a disputes story, customer knowledge, merchant acceptance…
Take SEPA Instant, for example. It’s great for many things, but effectively nobody pays using it in stores or even online.
https://news.ycombinator.com/item?id=49632470
3 replies →
> Walmart is currently trialing it to save $3B-$7B a year in interchange fees. No crypto, just XML messages through a mainframe at the Federal Reserve with a 20 second SLA.
Please tell your user that this SLA is much too high for many purposes. A cafe or such would lose a ton of money if every transaction took 20 seconds longer to conduct.
It's the worst case before they get penalized. I've had worse times with Mastercard and Visa. It's really not a big deal if one in a thousand payments, you sit by the card reader for 30 seconds before it says "please try again".
Works fine based on the evidence. It’s a maximum SLA, not every transaction. The economics are too compelling to ignore. Fast enough.