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Re:Stripe to move to South San Francisco by AdieuToLogic on Thursday October 24, 2019 @02:52AM (#21342289)
Your conflating fees charged to Merchants (by processors) and rewards offered to Card Holders (by issuers).

While often the same bank performs, or is a partial owner involved in, both processing and issuing, the percentages you quote are largely disjoint.

> I'm reading that Visa typically charges 2.3% to merchants ...

The Discount Rate[0] a Merchant pays varies significantly based on the line-of-business, charge-backs, processing contract, and a bunch of other things.

> ... at least on average 1% of each transaction goes to cardholder bonuses ...

Again, issuer costs have no bearing on Merchant fees nor the profitability of processors.

0 - https://www.creditcards.com/credit-card-news/glossary/term-d...

Re:Stripe to move to South San Francisco by nitrogen on Thursday October 24, 2019 @04:23AM (#21342653)
Again, issuer costs have no bearing on Merchant fees nor the profitability of processors.

If this is true, then where does the cash back come from if not as a cut of the merchant fees?

Re:Stripe to move to South San Francisco by AdieuToLogic on Thursday October 24, 2019 @11:03AM (#21345347)
> > Again, issuer costs have no bearing on Merchant fees nor the profitability of processors.

> If this is true, then where does the cash back come from if not as a cut of the merchant fees?

Interest rates + membership fees charged by issuers to Card Holders.

Re:Stripe to move to South San Francisco by rstupek on Thursday October 24, 2019 @01:01PM (#21346581)
I don't think that is correct. Merchants are charged different rates based on the cash back rates of a given card. Merchants have to eat most of that cash back being given to the card holders.
Re:Stripe to move to South San Francisco by ceejayoz on Thursday October 24, 2019 @08:26AM (#21343932)
Interchange fees are higher on premium (rewards) cards. The merchant may contractually pay a fixed percentage that accounts for the expected mix of cards, but those rewards absolutely come from merchant fees.