Whenever you buy something with your Visa card, four parties are involved: You, your bank, the retailer you buy from, and the retailer’s bank.
Both banks perform a series of steps to ensure your payment is processed and transferred securely, and it reaches the retailer promptly.
When your bank sends your payment to the retailer’s bank (known as the acquiring bank), a small fee is retained. This is called the interchange fee. Visa doesn’t receive any of this fee.
If interchange didn’t exist, your bank would find it difficult to cover the costs it incurs in operating your card services, such as fraud prevention, systems maintenance and customer call centres. If this were the case, your bank may stop investing in innovation, stop issuing cards altogether or increase the fees that you pay for its card services.
Similarly, when the retailer’s bank sends the payment to the retailer, it deducts a small fee – this is called the Merchant Service Charge and incorporates a number of component fees such as the interchange fee, costs to cover services provided by their bank, such as guaranteed payment, and the technology to accept card payments such as a terminal or contactless reader. This rate is negotiated directly between the retailer and its bank. Visa doesn't participate in this process.