Block claims that Visa and Mastercard conspired to fix inflated “interchange” fees and maintain market power, according to a suit filed July 14 in the US District Court for the Eastern District of New York.
“The effect of these artificially inflated fees—assessed to and paid by Square—is higher retail prices paid by consumers economy-wide,” Block said in the suit. “As retail prices increase in response to inflated fees, consumers can afford less and thus purchase less, reducing output.”