OK I get it now, cashback that you do is a form of loss leader.
Not really a loss leader as the credit card company does not lose money.
When a consumer uses a basic credit card with no perks, the vendor pays the merchant card company a percentage of the transaction by way of a monthly bill. It might be 1.5%.
A $1000 sale will put $1000 into the vendor's bank.
The vendor will be billed $15 by their merchant card company.
The merchant card company will disperse a percentage of the $15 to the credit card company (I am not sure what this percentage is).
The customer will be billed $1000 by the credit card company and will incur huge interest charges if they do not pay the bill on time.
The vendor only nets $985
When a consumer uses a basic credit card with perks, the vendor pays the merchant card company a
higher percentage of the transaction by way of a monthly bill. It might be 3.0%.
A $1000 sale will put $1000 into the vendor's bank.
The vendor will be billed $30 by their merchant card company.
The merchant card company will disperse a percentage of the $30 to the credit card company (I am not sure what this percentage is).
The customer will be billed $1000 by the credit card company and will incur huge interest charges if they do not pay the bill on time.
The vendor only nets $970
This is why I said in the big picture it could increase prices to the customer, as the vendors have to recover that money somehow. There are additional costs like leasing/buying the credit card machine and "Payment Network" fees.
In many B2B transactions, there has always been a discount for paying by cash/cheque within a set period of time. You would not get this discount if you were paying by credit card - so that is basically a charge for paying by credit card. If you have seen something like "2/10 net 30" you have seen what I am talking about. That means if you pay within 10 days, you will get a 2% discount. You never get that if you pay by credit card.
In 2022 in Canada they have made it legal for companies to start charging a fee t a retail customer if a customer pays by credit card. I have not see it yet, but when I do I will not pay by credit card. They are supposed to make it visible at the checkout if they charge a fee and it has to be detailed on the receipt.