As part of its new payments system, Apple will be collecting fees from banks, Bloomberg reports. A number of banks, including JPMorgan Chase & Co., Bank of America, and Citigroup have all agreed to integrate their cards into the system, and Apple has apparently reached individual deals with various banks to collect a fee for each transaction made through Apple Pay. Neither Apple nor any of the key banks have commented on the specific arrangements, although Apple has said that it won’t be charging users, merchants, or developers for transactions, logically leaving the banks themselves as the only remaining revenue stream from which Apple can benefit. Apple has already made partnerships with the three major U.S. card networks—VISA, MasterCard, and American Express—and Discover tweeted that it is also in discussions with Apple to add support for its cards to Apple Pay.