Interchange fees are charged by the merchant's acquirer to a card-accepting merchant as component of the so-called merchant discount relationship (also referred to as "merchant service fee"). The merchant pays a merchant discount fee that is ordinarily 2 to 3 percent (this is negotiated, but will vary not only from merchant to merchant, but Free Credit Report also from card to card, with calling cards and rewards cards generally costing the merchants more to process), which is why some merchants prefer cash, debit cards, or even cheques.
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There also exists an pecuniary argument that acknowledgment card avail increases the "velocity" of bucks in an economy
- The result, according to the quantity guess of money, is an effective increase in the dinero supply, as expanded dough is flowing through the economy at a given time.